replace md5 with swift utils version

md5 is not an approved algorithm in FIPS mode, and trying to
instantiate a hashlib.md5() will fail when the system is running in
FIPS mode.

md5 is allowed when in a non-security context.  There is a plan to
add a keyword parameter (usedforsecurity) to hashlib.md5() to annotate
whether or not the instance is being used in a security context.

In the case where it is not, the instantiation of md5 will be allowed.
See https://bugs.python.org/issue9216 for more details.

Some downstream python versions already support this parameter.  To
support these versions, a new encapsulation of md5() is added to
swift/common/utils.py.  This encapsulation is identical to the one being
added to oslo.utils, but is recreated here to avoid adding a dependency.

This patch is to replace the instances of hashlib.md5() with this new
encapsulation, adding an annotation indicating whether the usage is
a security context or not.

While this patch seems large, it is really just the same change over and
again.  Reviewers need to pay particular attention as to whether the
keyword parameter (usedforsecurity) is set correctly.   Right now, all
of them appear to be not used in a security context.

Now that all the instances have been converted, we can update the bandit
run to look for these instances and ensure that new invocations do not
creep in.

With this latest patch, the functional and unit tests all pass
on a FIPS enabled system.

Co-Authored-By: Pete Zaitcev
Change-Id: Ibb4917da4c083e1e094156d748708b87387f2d87

61 files changed, 759 insertions, 509 deletions

diff --git a/bandit.yaml b/bandit.yaml
index e21301446..ed1c2b61e 100644
--- a/bandit.yaml
+++ b/bandit.yaml
@@ -80,7 +80,7 @@
 # B703 : django_mark_safe
 
 # (optional) list included test IDs here, eg '[B101, B406]':
-tests: [B102, B103, B302, B306, B308, B309, B310, B401, B501, B502, B506, B601, B602, B609]
+tests: [B102, B103, B302, B303, B304, B305, B306, B308, B309, B310, B401, B501, B502, B506, B601, B602, B609]
 
 # (optional) list skipped test IDs here, eg '[B101, B406]':
 skips:
diff --git a/swift/account/reaper.py b/swift/account/reaper.py
index 7b62df03f..bd4ee98e4 100644
--- a/swift/account/reaper.py
+++ b/swift/account/reaper.py
@@ -19,7 +19,6 @@ import socket
 from logging import DEBUG
 from math import sqrt
 from time import time
-from hashlib import md5
 import itertools
 
 from eventlet import GreenPool, sleep, Timeout
@@ -35,7 +34,7 @@ from swift.common.request_helpers import USE_REPLICATION_NETWORK_HEADER
 from swift.common.ring import Ring
 from swift.common.ring.utils import is_local_device
 from swift.common.utils import get_logger, whataremyips, config_true_value, \
-    Timestamp
+    Timestamp, md5
 from swift.common.daemon import Daemon
 from swift.common.storage_policy import POLICIES, PolicyError
 
@@ -271,8 +270,9 @@ class AccountReaper(Daemon):
                             container_ = container.encode('utf-8')
                         else:
                             container_ = container
-                        this_shard = int(md5(container_).hexdigest(), 16) % \
-                            len(nodes)
+                        this_shard = (
+                            int(md5(container_, usedforsecurity=False)
+                                .hexdigest(), 16) % len(nodes))
                         if container_shard not in (this_shard, None):
                             continue
 
diff --git a/swift/cli/info.py b/swift/cli/info.py
index 08a04e361..529f21043 100644
--- a/swift/cli/info.py
+++ b/swift/cli/info.py
@@ -15,7 +15,6 @@ import itertools
 import json
 import os
 import sqlite3
-from hashlib import md5
 from collections import defaultdict
 
 from six.moves import urllib
@@ -32,6 +31,7 @@ from swift.obj.diskfile import get_data_dir, read_metadata, DATADIR_BASE, \
     extract_policy
 from swift.common.storage_policy import POLICIES
 from swift.common.middleware.crypto.crypto_utils import load_crypto_meta
+from swift.common.utils import md5
 
 
 class InfoSystemExit(Exception):
@@ -545,7 +545,7 @@ def print_obj(datafile, check_etag=True, swift_dir='/etc/swift',
         # Optional integrity check; it's useful, but slow.
         file_len = None
         if check_etag:
-            h = md5()
+            h = md5(usedforsecurity=False)
             file_len = 0
             while True:
                 data = fp.read(64 * 1024)
diff --git a/swift/common/db.py b/swift/common/db.py
index e06baf5c6..48aeb5fcb 100644
--- a/swift/common/db.py
+++ b/swift/common/db.py
@@ -17,7 +17,6 @@
 
 from contextlib import contextmanager, closing
 import base64
-import hashlib
 import json
 import logging
 import os
@@ -36,7 +35,7 @@ import sqlite3
 from swift.common.constraints import MAX_META_COUNT, MAX_META_OVERALL_SIZE, \
     check_utf8
 from swift.common.utils import Timestamp, renamer, \
-    mkdirs, lock_parent_directory, fallocate
+    mkdirs, lock_parent_directory, fallocate, md5
 from swift.common.exceptions import LockTimeout
 from swift.common.swob import HTTPBadRequest
 
@@ -186,7 +185,8 @@ def chexor(old, name, timestamp):
     """
     if name is None:
         raise Exception('name is None!')
-    new = hashlib.md5(('%s-%s' % (name, timestamp)).encode('utf8')).hexdigest()
+    new = md5(('%s-%s' % (name, timestamp)).encode('utf8'),
+              usedforsecurity=False).hexdigest()
     return '%032x' % (int(old, 16) ^ int(new, 16))
 
 
diff --git a/swift/common/memcached.py b/swift/common/memcached.py
index bc1216283..6efe5669c 100644
--- a/swift/common/memcached.py
+++ b/swift/common/memcached.py
@@ -50,13 +50,13 @@ import json
 import logging
 import time
 from bisect import bisect
-from hashlib import md5
 
 from eventlet.green import socket
 from eventlet.pools import Pool
 from eventlet import Timeout
 from six.moves import range
 from swift.common import utils
+from swift.common.utils import md5
 
 DEFAULT_MEMCACHED_PORT = 11211
 
@@ -81,7 +81,7 @@ def md5hash(key):
             key = key.encode('utf-8')
         else:
             key = key.encode('utf-8', errors='surrogateescape')
-    return md5(key).hexdigest().encode('ascii')
+    return md5(key, usedforsecurity=False).hexdigest().encode('ascii')
 
 
 def sanitize_timeout(timeout):
diff --git a/swift/common/middleware/crypto/encrypter.py b/swift/common/middleware/crypto/encrypter.py
index 15f92d764..c450694b3 100644
--- a/swift/common/middleware/crypto/encrypter.py
+++ b/swift/common/middleware/crypto/encrypter.py
@@ -27,7 +27,7 @@ from swift.common.request_helpers import get_object_transient_sysmeta, \
 from swift.common.swob import Request, Match, HTTPException, \
     HTTPUnprocessableEntity, wsgi_to_bytes, bytes_to_wsgi, normalize_etag
 from swift.common.utils import get_logger, config_true_value, \
-    MD5_OF_EMPTY_STRING
+    MD5_OF_EMPTY_STRING, md5
 
 
 def encrypt_header_val(crypto, value, key):
@@ -91,8 +91,8 @@ class EncInputWrapper(object):
             self.body_crypto_meta['key_id'] = self.keys['id']
             self.body_crypto_ctxt = self.crypto.create_encryption_ctxt(
                 body_key, self.body_crypto_meta.get('iv'))
-            self.plaintext_md5 = hashlib.md5()
-            self.ciphertext_md5 = hashlib.md5()
+            self.plaintext_md5 = md5(usedforsecurity=False)
+            self.ciphertext_md5 = md5(usedforsecurity=False)
 
     def install_footers_callback(self, req):
         # the proxy controller will call back for footer metadata after
diff --git a/swift/common/middleware/dlo.py b/swift/common/middleware/dlo.py
index d9222273d..5cb522309 100644
--- a/swift/common/middleware/dlo.py
+++ b/swift/common/middleware/dlo.py
@@ -122,7 +122,6 @@ import json
 
 import six
 
-from hashlib import md5
 from swift.common import constraints
 from swift.common.exceptions import ListingIterError, SegmentError
 from swift.common.http import is_success
@@ -131,7 +130,7 @@ from swift.common.swob import Request, Response, HTTPException, \
     str_to_wsgi, wsgi_to_str, wsgi_quote, wsgi_unquote, normalize_etag
 from swift.common.utils import get_logger, \
     RateLimitedIterator, quote, close_if_possible, closing_if_possible, \
-    drain_and_close
+    drain_and_close, md5
 from swift.common.request_helpers import SegmentedIterable, \
     update_ignore_range_header
 from swift.common.wsgi import WSGIContext, make_subrequest, load_app_config
@@ -333,7 +332,7 @@ class GetContext(WSGIContext):
         if have_complete_listing:
             response_headers = [(h, v) for h, v in response_headers
                                 if h.lower() != "etag"]
-            etag = md5()
+            etag = md5(usedforsecurity=False)
             for seg_dict in segments:
                 etag.update(normalize_etag(seg_dict['hash']).encode('utf8'))
             response_headers.append(('Etag', '"%s"' % etag.hexdigest()))
diff --git a/swift/common/middleware/s3api/controllers/multi_upload.py b/swift/common/middleware/s3api/controllers/multi_upload.py
index 3ab7e7801..e7b998460 100644
--- a/swift/common/middleware/s3api/controllers/multi_upload.py
+++ b/swift/common/middleware/s3api/controllers/multi_upload.py
@@ -61,7 +61,6 @@ Static Large Object when the multipart upload is completed.
 
 import binascii
 import copy
-from hashlib import md5
 import os
 import re
 import time
@@ -69,7 +68,7 @@ import time
 import six
 
 from swift.common.swob import Range, bytes_to_wsgi, normalize_etag
-from swift.common.utils import json, public, reiterate
+from swift.common.utils import json, public, reiterate, md5
 from swift.common.db import utf8encode
 from swift.common.request_helpers import get_container_update_override_key
 
@@ -636,7 +635,7 @@ class UploadController(Controller):
             headers['Content-Type'] = content_type
 
         container = req.container_name + MULTIUPLOAD_SUFFIX
-        s3_etag_hasher = md5()
+        s3_etag_hasher = md5(usedforsecurity=False)
         manifest = []
         previous_number = 0
         try:
@@ -646,7 +645,8 @@ class UploadController(Controller):
             if 'content-md5' in req.headers:
                 # If an MD5 was provided, we need to verify it.
                 # Note that S3Request already took care of translating to ETag
-                if req.headers['etag'] != md5(xml).hexdigest():
+                if req.headers['etag'] != md5(
+                        xml, usedforsecurity=False).hexdigest():
                     raise BadDigest(content_md5=req.headers['content-md5'])
                 # We're only interested in the body here, in the
                 # multipart-upload controller -- *don't* let it get
diff --git a/swift/common/middleware/s3api/s3request.py b/swift/common/middleware/s3api/s3request.py
index 384b64538..f3ae06307 100644
--- a/swift/common/middleware/s3api/s3request.py
+++ b/swift/common/middleware/s3api/s3request.py
@@ -17,7 +17,7 @@ import base64
 import binascii
 from collections import defaultdict, OrderedDict
 from email.header import Header
-from hashlib import sha1, sha256, md5
+from hashlib import sha1, sha256
 import hmac
 import re
 import six
@@ -26,7 +26,7 @@ from six.moves.urllib.parse import quote, unquote, parse_qsl
 import string
 
 from swift.common.utils import split_path, json, get_swift_info, \
-    close_if_possible
+    close_if_possible, md5
 from swift.common import swob
 from swift.common.http import HTTP_OK, HTTP_CREATED, HTTP_ACCEPTED, \
     HTTP_NO_CONTENT, HTTP_UNAUTHORIZED, HTTP_FORBIDDEN, HTTP_NOT_FOUND, \
@@ -866,7 +866,8 @@ class S3Request(swob.Request):
             raise InvalidRequest('Missing required header for this request: '
                                  'Content-MD5')
 
-        digest = base64.b64encode(md5(body).digest()).strip().decode('ascii')
+        digest = base64.b64encode(md5(
+            body, usedforsecurity=False).digest()).strip().decode('ascii')
         if self.environ['HTTP_CONTENT_MD5'] != digest:
             raise BadDigest(content_md5=self.environ['HTTP_CONTENT_MD5'])
 
diff --git a/swift/common/middleware/slo.py b/swift/common/middleware/slo.py
index e9d46b0a7..88554e1cb 100644
--- a/swift/common/middleware/slo.py
+++ b/swift/common/middleware/slo.py
@@ -330,7 +330,6 @@ import json
 import mimetypes
 import re
 import time
-from hashlib import md5
 
 import six
 
@@ -348,7 +347,7 @@ from swift.common.utils import get_logger, config_true_value, \
     get_valid_utf8_str, override_bytes_from_content_type, split_path, \
     register_swift_info, RateLimitedIterator, quote, close_if_possible, \
     closing_if_possible, LRUCache, StreamingPile, strict_b64decode, \
-    Timestamp, drain_and_close, get_expirer_container
+    Timestamp, drain_and_close, get_expirer_container, md5
 from swift.common.request_helpers import SegmentedIterable, \
     get_sys_meta_prefix, update_etag_is_at_header, resolve_etag_is_at_header, \
     get_container_update_override_key, update_ignore_range_header
@@ -927,7 +926,9 @@ class SloGetContext(WSGIContext):
             if header.lower() == 'content-length':
                 new_headers.append(('Content-Length', len(json_data)))
             elif header.lower() == 'etag':
-                new_headers.append(('Etag', md5(json_data).hexdigest()))
+                new_headers.append(
+                    ('Etag', md5(json_data, usedforsecurity=False)
+                     .hexdigest()))
             else:
                 new_headers.append((header, value))
         self._response_headers = new_headers
@@ -965,7 +966,7 @@ class SloGetContext(WSGIContext):
 
         # Prep to calculate content_length & etag if necessary
         if slo_etag is None:
-            calculated_etag = md5()
+            calculated_etag = md5(usedforsecurity=False)
         if content_length is None:
             calculated_content_length = 0
 
@@ -977,7 +978,8 @@ class SloGetContext(WSGIContext):
 
             if slo_etag is None:
                 if 'raw_data' in seg_dict:
-                    r = md5(seg_dict['raw_data']).hexdigest()
+                    r = md5(seg_dict['raw_data'],
+                            usedforsecurity=False).hexdigest()
                 elif seg_dict.get('range'):
                     r = '%s:%s;' % (seg_dict['hash'], seg_dict['range'])
                 else:
@@ -1347,11 +1349,11 @@ class StaticLargeObject(object):
                     out_content_type, resp_dict, problem_segments, 'upload')
                 return
 
-            slo_etag = md5()
+            slo_etag = md5(usedforsecurity=False)
             for seg_data in data_for_storage:
                 if 'data' in seg_data:
                     raw_data = base64.b64decode(seg_data['data'])
-                    r = md5(raw_data).hexdigest()
+                    r = md5(raw_data, usedforsecurity=False).hexdigest()
                 elif seg_data.get('range'):
                     r = '%s:%s;' % (seg_data['hash'], seg_data['range'])
                 else:
@@ -1386,7 +1388,7 @@ class StaticLargeObject(object):
                 SYSMETA_SLO_ETAG: slo_etag,
                 SYSMETA_SLO_SIZE: total_size,
                 'X-Static-Large-Object': 'True',
-                'Etag': md5(json_data).hexdigest(),
+                'Etag': md5(json_data, usedforsecurity=False).hexdigest(),
             })
 
             # Ensure container listings have both etags. However, if any
diff --git a/swift/common/request_helpers.py b/swift/common/request_helpers.py
index 0bf419654..8b3940fe5 100644
--- a/swift/common/request_helpers.py
+++ b/swift/common/request_helpers.py
@@ -20,7 +20,6 @@ Why not swift.common.utils, you ask? Because this way we can import things
 from swob in here without creating circular imports.
 """
 
-import hashlib
 import itertools
 import sys
 import time
@@ -40,7 +39,7 @@ from swift.common.utils import split_path, validate_device_partition, \
     close_if_possible, maybe_multipart_byteranges_to_document_iters, \
     multipart_byteranges_to_document_iters, parse_content_type, \
     parse_content_range, csv_append, list_from_csv, Spliterator, quote, \
-    RESERVED, config_true_value
+    RESERVED, config_true_value, md5
 from swift.common.wsgi import make_subrequest
 
 
@@ -604,7 +603,7 @@ class SegmentedIterable(object):
             seg_hash = None
             if seg_resp.etag and not seg_req.headers.get('Range'):
                 # Only calculate the MD5 if it we can use it to validate
-                seg_hash = hashlib.md5()
+                seg_hash = md5(usedforsecurity=False)
 
             document_iters = maybe_multipart_byteranges_to_document_iters(
                 seg_resp.app_iter,
diff --git a/swift/common/ring/ring.py b/swift/common/ring/ring.py
index 43eac5df8..99370fd28 100644
--- a/swift/common/ring/ring.py
+++ b/swift/common/ring/ring.py
@@ -22,7 +22,6 @@ from os.path import getmtime
 import struct
 from time import time
 import os
-from hashlib import md5
 from itertools import chain, count
 from tempfile import NamedTemporaryFile
 import sys
@@ -32,7 +31,7 @@ import six
 from six.moves import range
 
 from swift.common.exceptions import RingLoadError
-from swift.common.utils import hash_path, validate_configuration
+from swift.common.utils import hash_path, validate_configuration, md5
 from swift.common.ring.utils import tiers_for_dev
 
 
@@ -53,7 +52,7 @@ class RingReader(object):
         self._buffer = b''
         self.size = 0
         self.raw_size = 0
-        self._md5 = md5()
+        self._md5 = md5(usedforsecurity=False)
         self._decomp = zlib.decompressobj(32 + zlib.MAX_WBITS)
 
     @property
@@ -538,7 +537,8 @@ class Ring(object):
             (d['region'], d['zone'], d['ip']) for d in primary_nodes)
 
         parts = len(self._replica2part2dev_id[0])
-        part_hash = md5(str(part).encode('ascii')).digest()
+        part_hash = md5(str(part).encode('ascii'),
+                        usedforsecurity=False).digest()
         start = struct.unpack_from('>I', part_hash)[0] >> self._part_shift
         inc = int(parts / 65536) or 1
         # Multiple loops for execution speed; the checks and bookkeeping get
diff --git a/swift/common/utils.py b/swift/common/utils.py
index ee61835eb..908096e00 100644
--- a/swift/common/utils.py
+++ b/swift/common/utils.py
@@ -40,7 +40,7 @@ import uuid
 import functools
 import platform
 import email.parser
-from hashlib import md5, sha1
+from hashlib import sha1
 from random import random, shuffle
 from contextlib import contextmanager, closing
 import ctypes
@@ -674,7 +674,10 @@ class StrAnonymizer(str):
         if not self:
             return self
         else:
-            h = getattr(hashlib, self.method)()
+            if self.method == 'md5':
+                h = md5(usedforsecurity=False)
+            else:
+                h = getattr(hashlib, self.method)()
             if self.salt:
                 h.update(six.b(self.salt))
             h.update(six.b(self))
@@ -2735,10 +2738,10 @@ def hash_path(account, container=None, object=None, raw_digest=False):
                      else object.encode('utf8'))
     if raw_digest:
         return md5(HASH_PATH_PREFIX + b'/' + b'/'.join(paths)
-                   + HASH_PATH_SUFFIX).digest()
+                   + HASH_PATH_SUFFIX, usedforsecurity=False).digest()
     else:
         return md5(HASH_PATH_PREFIX + b'/' + b'/'.join(paths)
-                   + HASH_PATH_SUFFIX).hexdigest()
+                   + HASH_PATH_SUFFIX, usedforsecurity=False).hexdigest()
 
 
 def get_zero_indexed_base_string(base, index):
@@ -4858,6 +4861,31 @@ def get_md5_socket():
     return md5_sockfd
 
 
+try:
+    _test_md5 = hashlib.md5(usedforsecurity=False)  # nosec
+
+    def md5(string=b'', usedforsecurity=True):
+        """Return an md5 hashlib object using usedforsecurity parameter
+
+        For python distributions that support the usedforsecurity keyword
+        parameter, this passes the parameter through as expected.
+        See https://bugs.python.org/issue9216
+        """
+        return hashlib.md5(string, usedforsecurity=usedforsecurity)  # nosec
+except TypeError:
+    def md5(string=b'', usedforsecurity=True):
+        """Return an md5 hashlib object without usedforsecurity parameter
+
+        For python distributions that do not yet support this keyword
+        parameter, we drop the parameter
+        """
+        return hashlib.md5(string)  # nosec
+
+
+def md5_factory():
+    return md5(usedforsecurity=False)
+
+
 class ShardRange(object):
     """
     A ShardRange encapsulates sharding state related to a container including
@@ -4999,7 +5027,8 @@ class ShardRange(object):
         if not isinstance(parent_container, bytes):
             parent_container = parent_container.encode('utf-8')
         return "%s-%s-%s-%s" % (root_container,
-                                hashlib.md5(parent_container).hexdigest(),
+                                md5(parent_container,
+                                    usedforsecurity=False).hexdigest(),
                                 cls._to_timestamp(timestamp).internal,
                                 index)
 
@@ -5583,7 +5612,7 @@ def md5_hash_for_file(fname):
     :returns: MD5 checksum, hex encoded
     """
     with open(fname, 'rb') as f:
-        md5sum = md5()
+        md5sum = md5(usedforsecurity=False)
         for block in iter(lambda: f.read(MD5_BLOCK_READ_BYTES), b''):
             md5sum.update(block)
     return md5sum.hexdigest()
diff --git a/swift/obj/diskfile.py b/swift/obj/diskfile.py
index a1287a247..0bb157d86 100644
--- a/swift/obj/diskfile.py
+++ b/swift/obj/diskfile.py
@@ -40,7 +40,6 @@ import os
 import re
 import time
 import uuid
-from hashlib import md5
 import logging
 import traceback
 import xattr
@@ -66,7 +65,8 @@ from swift.common.utils import mkdirs, Timestamp, \
     config_true_value, listdir, split_path, remove_file, \
     get_md5_socket, F_SETPIPE_SZ, decode_timestamps, encode_timestamps, \
     MD5_OF_EMPTY_STRING, link_fd_to_path, \
-    O_TMPFILE, makedirs_count, replace_partition_in_path, remove_directory
+    O_TMPFILE, makedirs_count, replace_partition_in_path, remove_directory, \
+    md5, md5_factory
 from swift.common.splice import splice, tee
 from swift.common.exceptions import DiskFileQuarantined, DiskFileNotExist, \
     DiskFileCollision, DiskFileNoSpace, DiskFileDeviceUnavailable, \
@@ -222,14 +222,16 @@ def read_metadata(fd, add_missing_checksum=False):
         # exist. This is fine; it just means that this object predates the
         # introduction of metadata checksums.
         if add_missing_checksum:
-            new_checksum = md5(metadata).hexdigest().encode('ascii')
+            new_checksum = (md5(metadata, usedforsecurity=False)
+                            .hexdigest().encode('ascii'))
             try:
                 xattr.setxattr(fd, METADATA_CHECKSUM_KEY, new_checksum)
             except (IOError, OSError) as e:
                 logging.error("Error adding metadata: %s" % e)
 
     if metadata_checksum:
-        computed_checksum = md5(metadata).hexdigest().encode('ascii')
+        computed_checksum = (md5(metadata, usedforsecurity=False)
+                             .hexdigest().encode('ascii'))
         if metadata_checksum != computed_checksum:
             raise DiskFileBadMetadataChecksum(
                 "Metadata checksum mismatch for %s: "
@@ -254,7 +256,8 @@ def write_metadata(fd, metadata, xattr_size=65536):
     :param metadata: metadata to write
     """
     metastr = pickle.dumps(_encode_metadata(metadata), PICKLE_PROTOCOL)
-    metastr_md5 = md5(metastr).hexdigest().encode('ascii')
+    metastr_md5 = (
+        md5(metastr, usedforsecurity=False).hexdigest().encode('ascii'))
     key = 0
     try:
         while metastr:
@@ -1113,11 +1116,11 @@ class BaseDiskFileManager(object):
         :param policy: storage policy used
         """
         if six.PY2:
-            hashes = defaultdict(md5)
+            hashes = defaultdict(md5_factory)
         else:
             class shim(object):
                 def __init__(self):
-                    self.md5 = md5()
+                    self.md5 = md5(usedforsecurity=False)
 
                 def update(self, s):
                     if isinstance(s, str):
@@ -1686,7 +1689,7 @@ class BaseDiskFileWriter(object):
         self._fd = None
         self._tmppath = None
         self._size = size
-        self._chunks_etag = md5()
+        self._chunks_etag = md5(usedforsecurity=False)
         self._bytes_per_sync = bytes_per_sync
         self._diskfile = diskfile
         self.next_part_power = next_part_power
@@ -2003,7 +2006,7 @@ class BaseDiskFileReader(object):
     def _init_checks(self):
         if self._fp.tell() == 0:
             self._started_at_0 = True
-            self._iter_etag = md5()
+            self._iter_etag = md5(usedforsecurity=False)
 
     def _update_checks(self, chunk):
         if self._iter_etag:
diff --git a/swift/obj/expirer.py b/swift/obj/expirer.py
index 6f506b1d0..1c8f9bb95 100644
--- a/swift/obj/expirer.py
+++ b/swift/obj/expirer.py
@@ -20,7 +20,6 @@ from time import time
 from os.path import join
 from swift import gettext_ as _
 from collections import defaultdict, deque
-import hashlib
 
 from eventlet import sleep, Timeout
 from eventlet.greenpool import GreenPool
@@ -30,7 +29,7 @@ from swift.common.daemon import Daemon
 from swift.common.internal_client import InternalClient, UnexpectedResponse
 from swift.common.utils import get_logger, dump_recon_cache, split_path, \
     Timestamp, config_true_value, normalize_delete_at_timestamp, \
-    RateLimitedIterator
+    RateLimitedIterator, md5
 from swift.common.http import HTTP_NOT_FOUND, HTTP_CONFLICT, \
     HTTP_PRECONDITION_FAILED
 from swift.common.swob import wsgi_quote, str_to_wsgi
@@ -218,7 +217,8 @@ class ObjectExpirer(Daemon):
         if not isinstance(name, bytes):
             name = name.encode('utf8')
         # md5 is only used for shuffling mod
-        return int(hashlib.md5(name).hexdigest(), 16) % divisor
+        return int(md5(
+            name, usedforsecurity=False).hexdigest(), 16) % divisor
 
     def iter_task_accounts_to_expire(self):
         """
diff --git a/swift/obj/mem_diskfile.py b/swift/obj/mem_diskfile.py
index 6fdf33d7c..fa72372fe 100644
--- a/swift/obj/mem_diskfile.py
+++ b/swift/obj/mem_diskfile.py
@@ -17,7 +17,6 @@
 
 import io
 import time
-import hashlib
 from contextlib import contextmanager
 
 from eventlet import Timeout
@@ -27,6 +26,7 @@ from swift.common.exceptions import DiskFileQuarantined, DiskFileNotExist, \
     DiskFileCollision, DiskFileDeleted, DiskFileNotOpen
 from swift.common.request_helpers import is_sys_meta
 from swift.common.swob import multi_range_iterator
+from swift.common.utils import md5
 from swift.obj.diskfile import DATAFILE_SYSTEM_META, RESERVED_DATAFILE_META
 
 
@@ -103,7 +103,7 @@ class DiskFileWriter(object):
         self._name = name
         self._fp = None
         self._upload_size = 0
-        self._chunks_etag = hashlib.md5()
+        self._chunks_etag = md5(usedforsecurity=False)
 
     def open(self):
         """
@@ -197,7 +197,7 @@ class DiskFileReader(object):
             self._read_to_eof = False
             if self._fp.tell() == 0:
                 self._started_at_0 = True
-                self._iter_etag = hashlib.md5()
+                self._iter_etag = md5(usedforsecurity=False)
             while True:
                 chunk = self._fp.read()
                 if chunk:
diff --git a/swift/obj/server.py b/swift/obj/server.py
index 73d920502..52d6b139e 100644
--- a/swift/obj/server.py
+++ b/swift/obj/server.py
@@ -26,7 +26,6 @@ import traceback
 import socket
 import math
 from swift import gettext_ as _
-from hashlib import md5
 
 from eventlet import sleep, wsgi, Timeout, tpool
 from eventlet.greenthread import spawn
@@ -37,7 +36,7 @@ from swift.common.utils import public, get_logger, \
     get_expirer_container, parse_mime_headers, \
     iter_multipart_mime_documents, extract_swift_bytes, safe_json_loads, \
     config_auto_int_value, split_path, get_redirect_data, \
-    normalize_timestamp
+    normalize_timestamp, md5
 from swift.common.bufferedhttp import http_connect
 from swift.common.constraints import check_object_creation, \
     valid_timestamp, check_utf8, AUTO_CREATE_ACCOUNT_PREFIX
@@ -583,7 +582,7 @@ class ObjectController(BaseStorageServer):
         footer_md5 = footer_hdrs.get('Content-MD5')
         if not footer_md5:
             raise HTTPBadRequest(body="no Content-MD5 in footer")
-        if footer_md5 != md5(footer_body).hexdigest():
+        if footer_md5 != md5(footer_body, usedforsecurity=False).hexdigest():
             raise HTTPUnprocessableEntity(body="footer MD5 mismatch")
 
         try:
diff --git a/swift/proxy/controllers/obj.py b/swift/proxy/controllers/obj.py
index 67b9a8b76..549245a44 100644
--- a/swift/proxy/controllers/obj.py
+++ b/swift/proxy/controllers/obj.py
@@ -35,7 +35,6 @@ import mimetypes
 import time
 import math
 import random
-from hashlib import md5
 import sys
 
 from greenlet import GreenletExit
@@ -49,7 +48,8 @@ from swift.common.utils import (
     GreenAsyncPile, GreenthreadSafeIterator, Timestamp, WatchdogTimeout,
     normalize_delete_at_timestamp, public, get_expirer_container,
     document_iters_to_http_response_body, parse_content_range,
-    quorum_size, reiterate, close_if_possible, safe_json_loads)
+    quorum_size, reiterate, close_if_possible, safe_json_loads, md5,
+    md5_factory)
 from swift.common.bufferedhttp import http_connect
 from swift.common.constraints import check_metadata, check_object_creation
 from swift.common import constraints
@@ -1784,7 +1784,8 @@ class MIMEPutter(Putter):
             self._start_object_data()
 
         footer_body = json.dumps(footer_metadata).encode('ascii')
-        footer_md5 = md5(footer_body).hexdigest().encode('ascii')
+        footer_md5 = md5(
+            footer_body, usedforsecurity=False).hexdigest().encode('ascii')
 
         tail_boundary = (b"--%s" % (self.mime_boundary,))
         if not self.multiphase:
@@ -3178,7 +3179,7 @@ class ECObjectController(BaseObjectController):
         bytes_transferred = 0
         chunk_transform = chunk_transformer(policy)
         chunk_transform.send(None)
-        frag_hashers = collections.defaultdict(md5)
+        frag_hashers = collections.defaultdict(md5_factory)
 
         def send_chunk(chunk):
             # Note: there's two different hashers in here. etag_hasher is
@@ -3411,7 +3412,7 @@ class ECObjectController(BaseObjectController):
         # the same as the request body sent proxy -> object, we
         # can't rely on the object-server to do the etag checking -
         # so we have to do it here.
-        etag_hasher = md5()
+        etag_hasher = md5(usedforsecurity=False)
 
         min_conns = policy.quorum
         putters = self._get_put_connections(
diff --git a/test/functional/s3api/test_multi_upload.py b/test/functional/s3api/test_multi_upload.py
index b2aa006a2..3319e8b1a 100644
--- a/test/functional/s3api/test_multi_upload.py
+++ b/test/functional/s3api/test_multi_upload.py
@@ -23,13 +23,13 @@ import boto
 # pylint: disable-msg=E0611,F0401
 from distutils.version import StrictVersion
 
-from hashlib import md5
 from six.moves import zip, zip_longest
 
 import test.functional as tf
 from swift.common.middleware.s3api.etree import fromstring, tostring, \
     Element, SubElement
 from swift.common.middleware.s3api.utils import mktime
+from swift.common.utils import md5
 
 from test.functional.s3api import S3ApiBase
 from test.functional.s3api.s3_test_client import Connection
@@ -180,7 +180,7 @@ class TestS3ApiMultiUpload(S3ApiBase):
         # Upload Part
         key, upload_id = uploads[0]
         content = b'a' * self.min_segment_size
-        etag = md5(content).hexdigest()
+        etag = md5(content, usedforsecurity=False).hexdigest()
         status, headers, body = \
             self._upload_part(bucket, key, upload_id, content)
         self.assertEqual(status, 200)
@@ -196,7 +196,7 @@ class TestS3ApiMultiUpload(S3ApiBase):
         src_bucket = 'bucket2'
         src_obj = 'obj3'
         src_content = b'b' * self.min_segment_size
-        etag = md5(src_content).hexdigest()
+        etag = md5(src_content, usedforsecurity=False).hexdigest()
 
         # prepare src obj
         self.conn.make_request('PUT', src_bucket)
@@ -312,7 +312,8 @@ class TestS3ApiMultiUpload(S3ApiBase):
         concatted_etags = b''.join(
             etag.strip('"').encode('ascii') for etag in etags)
         exp_etag = '"%s-%s"' % (
-            md5(binascii.unhexlify(concatted_etags)).hexdigest(), len(etags))
+            md5(binascii.unhexlify(concatted_etags),
+                usedforsecurity=False).hexdigest(), len(etags))
         etag = elem.find('ETag').text
         self.assertEqual(etag, exp_etag)
 
@@ -324,7 +325,8 @@ class TestS3ApiMultiUpload(S3ApiBase):
         self.assertEqual(headers['content-type'], 'foo/bar')
         self.assertEqual(headers['x-amz-meta-baz'], 'quux')
 
-        swift_etag = '"%s"' % md5(concatted_etags).hexdigest()
+        swift_etag = '"%s"' % md5(
+            concatted_etags, usedforsecurity=False).hexdigest()
         # TODO: GET via swift api, check against swift_etag
 
         # Should be safe to retry
@@ -375,7 +377,7 @@ class TestS3ApiMultiUpload(S3ApiBase):
         self.assertIsNotNone(last_modified)
 
         exp_content = b'a' * self.min_segment_size
-        etag = md5(exp_content).hexdigest()
+        etag = md5(exp_content, usedforsecurity=False).hexdigest()
         self.assertEqual(resp_etag, etag)
 
         # Also check that the etag is correct in part listings
@@ -858,7 +860,9 @@ class TestS3ApiMultiUpload(S3ApiBase):
         src_content = b'y' * (self.min_segment_size // 2) + b'z' * \
             self.min_segment_size
         src_range = 'bytes=0-%d' % (self.min_segment_size - 1)
-        etag = md5(src_content[:self.min_segment_size]).hexdigest()
+        etag = md5(
+            src_content[:self.min_segment_size],
+            usedforsecurity=False).hexdigest()
 
         # prepare src obj
         self.conn.make_request('PUT', src_bucket)
@@ -951,7 +955,7 @@ class TestS3ApiMultiUpload(S3ApiBase):
         src_obj = 'obj4'
         src_content = b'y' * (self.min_segment_size // 2) + b'z' * \
             self.min_segment_size
-        etags = [md5(src_content).hexdigest()]
+        etags = [md5(src_content, usedforsecurity=False).hexdigest()]
 
         # prepare null-version src obj
         self.conn.make_request('PUT', src_bucket)
@@ -969,7 +973,7 @@ class TestS3ApiMultiUpload(S3ApiBase):
 
         src_obj2 = 'obj5'
         src_content2 = b'stub'
-        etags.append(md5(src_content2).hexdigest())
+        etags.append(md5(src_content2, usedforsecurity=False).hexdigest())
 
         # prepare src obj w/ real version
         self.conn.make_request('PUT', src_bucket, src_obj2, body=src_content2)
@@ -1098,7 +1102,7 @@ class TestS3ApiMultiUploadSigV4(TestS3ApiMultiUpload):
 
         # Complete Multipart Upload
         key, upload_id = uploads[0]
-        etags = [md5(content).hexdigest()]
+        etags = [md5(content, usedforsecurity=False).hexdigest()]
         xml = self._gen_comp_xml(etags)
         status, headers, body = \
             self._complete_multi_upload(bucket, key, upload_id, xml)
diff --git a/test/functional/s3api/test_object.py b/test/functional/s3api/test_object.py
index 8079c157b..6e09c3af5 100644
--- a/test/functional/s3api/test_object.py
+++ b/test/functional/s3api/test_object.py
@@ -24,13 +24,13 @@ from distutils.version import StrictVersion
 import email.parser
 from email.utils import formatdate, parsedate
 from time import mktime
-from hashlib import md5
 import six
 from six.moves.urllib.parse import quote
 
 import test.functional as tf
 
 from swift.common.middleware.s3api.etree import fromstring
+from swift.common.utils import md5
 
 from test.functional.s3api import S3ApiBase
 from test.functional.s3api.s3_test_client import Connection
@@ -61,7 +61,7 @@ class TestS3ApiObject(S3ApiBase):
     def test_object(self):
         obj = 'object name with %-sign'
         content = b'abc123'
-        etag = md5(content).hexdigest()
+        etag = md5(content, usedforsecurity=False).hexdigest()
 
         # PUT Object
         status, headers, body = \
@@ -252,7 +252,7 @@ class TestS3ApiObject(S3ApiBase):
 
     def test_put_object_content_encoding(self):
         obj = 'object'
-        etag = md5().hexdigest()
+        etag = md5(usedforsecurity=False).hexdigest()
         headers = {'Content-Encoding': 'gzip'}
         status, headers, body = \
             self.conn.make_request('PUT', self.bucket, obj, headers)
@@ -267,7 +267,7 @@ class TestS3ApiObject(S3ApiBase):
     def test_put_object_content_md5(self):
         obj = 'object'
         content = b'abcdefghij'
-        etag = md5(content).hexdigest()
+        etag = md5(content, usedforsecurity=False).hexdigest()
         headers = {'Content-MD5': calculate_md5(content)}
         status, headers, body = \
             self.conn.make_request('PUT', self.bucket, obj, headers, content)
@@ -278,7 +278,7 @@ class TestS3ApiObject(S3ApiBase):
     def test_put_object_content_type(self):
         obj = 'object'
         content = b'abcdefghij'
-        etag = md5(content).hexdigest()
+        etag = md5(content, usedforsecurity=False).hexdigest()
         headers = {'Content-Type': 'text/plain'}
         status, headers, body = \
             self.conn.make_request('PUT', self.bucket, obj, headers, content)
@@ -320,7 +320,7 @@ class TestS3ApiObject(S3ApiBase):
     def test_put_object_expect(self):
         obj = 'object'
         content = b'abcdefghij'
-        etag = md5(content).hexdigest()
+        etag = md5(content, usedforsecurity=False).hexdigest()
         headers = {'Expect': '100-continue'}
         status, headers, body = \
             self.conn.make_request('PUT', self.bucket, obj, headers, content)
@@ -333,7 +333,7 @@ class TestS3ApiObject(S3ApiBase):
             expected_headers = req_headers
         obj = 'object'
         content = b'abcdefghij'
-        etag = md5(content).hexdigest()
+        etag = md5(content, usedforsecurity=False).hexdigest()
         status, headers, body = \
             self.conn.make_request('PUT', self.bucket, obj,
                                    req_headers, content)
@@ -389,7 +389,7 @@ class TestS3ApiObject(S3ApiBase):
     def test_put_object_storage_class(self):
         obj = 'object'
         content = b'abcdefghij'
-        etag = md5(content).hexdigest()
+        etag = md5(content, usedforsecurity=False).hexdigest()
         headers = {'X-Amz-Storage-Class': 'STANDARD'}
         status, headers, body = \
             self.conn.make_request('PUT', self.bucket, obj, headers, content)
@@ -435,7 +435,7 @@ class TestS3ApiObject(S3ApiBase):
     def test_put_object_copy_source(self):
         obj = 'object'
         content = b'abcdefghij'
-        etag = md5(content).hexdigest()
+        etag = md5(content, usedforsecurity=False).hexdigest()
         self.conn.make_request('PUT', self.bucket, obj, body=content)
 
         dst_bucket = 'dst-bucket'
@@ -521,7 +521,7 @@ class TestS3ApiObject(S3ApiBase):
         obj = 'object'
         dst_bucket = 'dst-bucket'
         dst_obj = 'dst_object'
-        etag = md5().hexdigest()
+        etag = md5(usedforsecurity=False).hexdigest()
         self.conn.make_request('PUT', self.bucket, obj)
         self.conn.make_request('PUT', dst_bucket)
 
@@ -541,7 +541,7 @@ class TestS3ApiObject(S3ApiBase):
         obj = 'object'
         dst_bucket = 'dst-bucket'
         dst_obj = 'dst_object'
-        etag = md5().hexdigest()
+        etag = md5(usedforsecurity=False).hexdigest()
         self.conn.make_request('PUT', self.bucket, obj)
         self.conn.make_request('PUT', dst_bucket)
 
@@ -561,7 +561,7 @@ class TestS3ApiObject(S3ApiBase):
         obj = 'object'
         dst_bucket = 'dst-bucket'
         dst_obj = 'dst_object'
-        etag = md5().hexdigest()
+        etag = md5(usedforsecurity=False).hexdigest()
         self.conn.make_request('PUT', self.bucket, obj)
         self.conn.make_request('PUT', dst_bucket)
 
@@ -580,7 +580,7 @@ class TestS3ApiObject(S3ApiBase):
         obj = 'object'
         dst_bucket = 'dst-bucket'
         dst_obj = 'dst_object'
-        etag = md5().hexdigest()
+        etag = md5(usedforsecurity=False).hexdigest()
         self.conn.make_request('PUT', self.bucket, obj)
         self.conn.make_request('PUT', dst_bucket)
 
diff --git a/test/functional/s3api/utils.py b/test/functional/s3api/utils.py
index 5a979fdcb..e8fde3954 100644
--- a/test/functional/s3api/utils.py
+++ b/test/functional/s3api/utils.py
@@ -14,8 +14,8 @@
 # limitations under the License.
 
 from base64 import b64encode
-from hashlib import md5
 from swift.common.middleware.s3api.etree import fromstring
+from swift.common.utils import md5
 
 
 def get_error_code(body):
@@ -29,4 +29,5 @@ def get_error_msg(body):
 
 
 def calculate_md5(body):
-    return b64encode(md5(body).digest()).strip().decode('ascii')
+    return b64encode(
+        md5(body, usedforsecurity=False).digest()).strip().decode('ascii')
diff --git a/test/functional/swift_test_client.py b/test/functional/swift_test_client.py
index b5ae46561..7b119d8a0 100644
--- a/test/functional/swift_test_client.py
+++ b/test/functional/swift_test_client.py
@@ -13,7 +13,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import hashlib
 import io
 import json
 import os
@@ -33,7 +32,7 @@ from swiftclient import get_auth
 from swift.common import constraints
 from swift.common.http import is_success
 from swift.common.swob import str_to_wsgi, wsgi_to_str
-from swift.common.utils import config_true_value
+from swift.common.utils import config_true_value, md5
 
 from test import safe_repr
 
@@ -851,7 +850,7 @@ class File(Base):
         if isinstance(data, bytes):
             data = io.BytesIO(data)
 
-        checksum = hashlib.md5()
+        checksum = md5(usedforsecurity=False)
         buff = data.read(block_size)
         while buff:
             checksum.update(buff)
@@ -1058,7 +1057,7 @@ class File(Base):
             raise ResponseError(self.conn.response, 'GET',
                                 self.conn.make_path(self.path))
 
-        checksum = hashlib.md5()
+        checksum = md5(usedforsecurity=False)
 
         scratch = self.conn.response.read(8192)
         while len(scratch) > 0:
diff --git a/test/functional/test_object.py b/test/functional/test_object.py
index 6145d4a98..768de19c0 100644
--- a/test/functional/test_object.py
+++ b/test/functional/test_object.py
@@ -16,7 +16,6 @@
 # limitations under the License.
 
 import datetime
-import hashlib
 import json
 import unittest
 from uuid import uuid4
@@ -29,6 +28,7 @@ from six.moves import range
 from test.functional import check_response, retry, requires_acls, \
     requires_policies, SkipTest, requires_bulk
 import test.functional as tf
+from swift.common.utils import md5
 
 
 def setUpModule():
@@ -1741,7 +1741,7 @@ class TestObject(unittest.TestCase):
                 expect_quoted = tf.cluster_info.get('etag_quoter', {}).get(
                     'enable_by_default', False)
 
-            expected_etag = hashlib.md5(b'test').hexdigest()
+            expected_etag = md5(b'test', usedforsecurity=False).hexdigest()
             if expect_quoted:
                 expected_etag = '"%s"' % expected_etag
             self.assertEqual(resp.headers['etag'], expected_etag)
diff --git a/test/functional/test_object_versioning.py b/test/functional/test_object_versioning.py
index d7db187c0..a6ac9027d 100644
--- a/test/functional/test_object_versioning.py
+++ b/test/functional/test_object_versioning.py
@@ -21,13 +21,12 @@ import time
 import six
 
 from copy import deepcopy
-from hashlib import md5
 from six.moves.urllib.parse import quote, unquote
 
 import test.functional as tf
 
 from swift.common.swob import normalize_etag
-from swift.common.utils import MD5_OF_EMPTY_STRING, config_true_value
+from swift.common.utils import MD5_OF_EMPTY_STRING, config_true_value, md5
 from swift.common.middleware.versioned_writes.object_versioning import \
     DELETE_MARKER_CONTENT_TYPE
 
@@ -338,7 +337,9 @@ class TestObjectVersioning(TestObjectVersioningBase):
         obj = self.env.unversioned_container.file(oname)
         resp = obj.write(body, return_resp=True)
         etag = resp.getheader('etag')
-        self.assertEqual(md5(body).hexdigest(), normalize_etag(etag))
+        self.assertEqual(
+            md5(body, usedforsecurity=False).hexdigest(),
+            normalize_etag(etag))
 
         # un-versioned object is cool with with if-match
         self.assertEqual(body, obj.read(hdrs={'if-match': etag}))
@@ -569,7 +570,7 @@ class TestObjectVersioning(TestObjectVersioningBase):
             'name': obj_name,
             'content_type': version['content_type'],
             'version_id': version['version_id'],
-            'hash': md5(version['body']).hexdigest(),
+            'hash': md5(version['body'], usedforsecurity=False).hexdigest(),
             'bytes': len(version['body'],)
         } for version in reversed(versions)]
         for item, is_latest in zip(expected, (True, False, False)):
@@ -1263,14 +1264,14 @@ class TestContainerOperations(TestObjectVersioningBase):
         # v1
         resp = obj.write(b'version1', hdrs={
             'Content-Type': 'text/jibberish11',
-            'ETag': md5(b'version1').hexdigest(),
+            'ETag': md5(b'version1', usedforsecurity=False).hexdigest(),
         }, return_resp=True)
         obj1_v1['id'] = resp.getheader('x-object-version-id')
 
         # v2
         resp = obj.write(b'version2', hdrs={
             'Content-Type': 'text/jibberish12',
-            'ETag': md5(b'version2').hexdigest(),
+            'ETag': md5(b'version2', usedforsecurity=False).hexdigest(),
         }, return_resp=True)
         obj1_v2 = {}
         obj1_v2['name'] = obj1_v1['name']
@@ -1279,7 +1280,7 @@ class TestContainerOperations(TestObjectVersioningBase):
         # v3
         resp = obj.write(b'version3', hdrs={
             'Content-Type': 'text/jibberish13',
-            'ETag': md5(b'version3').hexdigest(),
+            'ETag': md5(b'version3', usedforsecurity=False).hexdigest(),
         }, return_resp=True)
         obj1_v3 = {}
         obj1_v3['name'] = obj1_v1['name']
@@ -1333,20 +1334,20 @@ class TestContainerOperations(TestObjectVersioningBase):
         obj = self.env.unversioned_container.file(objs[0])
         obj.write(b'data', hdrs={
             'Content-Type': 'text/jibberish11',
-            'ETag': md5(b'data').hexdigest(),
+            'ETag': md5(b'data', usedforsecurity=False).hexdigest(),
         })
         obj.delete()
 
         obj = self.env.unversioned_container.file(objs[1])
         obj.write(b'first', hdrs={
             'Content-Type': 'text/blah-blah-blah',
-            'ETag': md5(b'first').hexdigest(),
+            'ETag': md5(b'first', usedforsecurity=False).hexdigest(),
         })
 
         obj = self.env.unversioned_container.file(objs[2])
         obj.write(b'second', hdrs={
             'Content-Type': 'text/plain',
-            'ETag': md5(b'second').hexdigest(),
+            'ETag': md5(b'second', usedforsecurity=False).hexdigest(),
         })
         return objs
 
@@ -1385,21 +1386,21 @@ class TestContainerOperations(TestObjectVersioningBase):
             'name': obj1_v3['name'],
             'bytes': 8,
             'content_type': 'text/jibberish13',
-            'hash': md5(b'version3').hexdigest(),
+            'hash': md5(b'version3', usedforsecurity=False).hexdigest(),
             'is_latest': False,
             'version_id': obj1_v3['id'],
         }, {
             'name': obj1_v2['name'],
             'bytes': 8,
             'content_type': 'text/jibberish12',
-            'hash': md5(b'version2').hexdigest(),
+            'hash': md5(b'version2', usedforsecurity=False).hexdigest(),
             'is_latest': False,
             'version_id': obj1_v2['id'],
         }, {
             'name': obj1_v1['name'],
             'bytes': 8,
             'content_type': 'text/jibberish11',
-            'hash': md5(b'version1').hexdigest(),
+            'hash': md5(b'version1', usedforsecurity=False).hexdigest(),
             'is_latest': False,
             'version_id': obj1_v1['id'],
         }])
@@ -1418,21 +1419,21 @@ class TestContainerOperations(TestObjectVersioningBase):
             'name': obj1_v1['name'],
             'bytes': 8,
             'content_type': 'text/jibberish11',
-            'hash': md5(b'version1').hexdigest(),
+            'hash': md5(b'version1', usedforsecurity=False).hexdigest(),
             'is_latest': False,
             'version_id': obj1_v1['id'],
         }, {
             'name': obj1_v2['name'],
             'bytes': 8,
             'content_type': 'text/jibberish12',
-            'hash': md5(b'version2').hexdigest(),
+            'hash': md5(b'version2', usedforsecurity=False).hexdigest(),
             'is_latest': False,
             'version_id': obj1_v2['id'],
         }, {
             'name': obj1_v3['name'],
             'bytes': 8,
             'content_type': 'text/jibberish13',
-            'hash': md5(b'version3').hexdigest(),
+            'hash': md5(b'version3', usedforsecurity=False).hexdigest(),
             'is_latest': False,
             'version_id': obj1_v3['id'],
         }, {
@@ -1481,21 +1482,21 @@ class TestContainerOperations(TestObjectVersioningBase):
             'name': obj1_v3['name'],
             'bytes': 8,
             'content_type': 'text/jibberish13',
-            'hash': md5(b'version3').hexdigest(),
+            'hash': md5(b'version3', usedforsecurity=False).hexdigest(),
             'is_latest': False,
             'version_id': obj1_v3['id'],
         }, {
             'name': obj1_v2['name'],
             'bytes': 8,
             'content_type': 'text/jibberish12',
-            'hash': md5(b'version2').hexdigest(),
+            'hash': md5(b'version2', usedforsecurity=False).hexdigest(),
             'is_latest': False,
             'version_id': obj1_v2['id'],
         }, {
             'name': obj1_v1['name'],
             'bytes': 8,
             'content_type': 'text/jibberish11',
-            'hash': md5(b'version1').hexdigest(),
+            'hash': md5(b'version1', usedforsecurity=False).hexdigest(),
             'is_latest': False,
             'version_id': obj1_v1['id'],
         }])
@@ -1516,21 +1517,21 @@ class TestContainerOperations(TestObjectVersioningBase):
             'name': obj1_v1['name'],
             'bytes': 8,
             'content_type': 'text/jibberish11',
-            'hash': md5(b'version1').hexdigest(),
+            'hash': md5(b'version1', usedforsecurity=False).hexdigest(),
             'is_latest': False,
             'version_id': obj1_v1['id'],
         }, {
             'name': obj1_v1['name'],
             'bytes': 8,
             'content_type': 'text/jibberish12',
-            'hash': md5(b'version2').hexdigest(),
+            'hash': md5(b'version2', usedforsecurity=False).hexdigest(),
             'is_latest': False,
             'version_id': obj1_v2['id'],
         }, {
             'name': obj1_v1['name'],
             'bytes': 8,
             'content_type': 'text/jibberish13',
-            'hash': md5(b'version3').hexdigest(),
+            'hash': md5(b'version3', usedforsecurity=False).hexdigest(),
             'is_latest': False,
             'version_id': obj1_v3['id'],
         }, {
@@ -1601,7 +1602,7 @@ class TestContainerOperations(TestObjectVersioningBase):
             'name': obj1_v3['name'],
             'bytes': 8,
             'content_type': 'text/jibberish13',
-            'hash': md5(b'version3').hexdigest(),
+            'hash': md5(b'version3', usedforsecurity=False).hexdigest(),
             'is_latest': False,
             'version_id': obj1_v3['id'],
         }])
@@ -1623,14 +1624,14 @@ class TestContainerOperations(TestObjectVersioningBase):
             'name': obj1_v2['name'],
             'bytes': 8,
             'content_type': 'text/jibberish12',
-            'hash': md5(b'version2').hexdigest(),
+            'hash': md5(b'version2', usedforsecurity=False).hexdigest(),
             'is_latest': False,
             'version_id': obj1_v2['id'],
         }, {
             'name': obj1_v1['name'],
             'bytes': 8,
             'content_type': 'text/jibberish11',
-            'hash': md5(b'version1').hexdigest(),
+            'hash': md5(b'version1', usedforsecurity=False).hexdigest(),
             'is_latest': False,
             'version_id': obj1_v1['id'],
         }])
@@ -1690,14 +1691,14 @@ class TestContainerOperations(TestObjectVersioningBase):
             'name': obj1_v2['name'],
             'bytes': 8,
             'content_type': 'text/jibberish12',
-            'hash': md5(b'version2').hexdigest(),
+            'hash': md5(b'version2', usedforsecurity=False).hexdigest(),
             'is_latest': False,
             'version_id': obj1_v2['id'],
         }, {
             'name': obj1_v1['name'],
             'bytes': 8,
             'content_type': 'text/jibberish11',
-            'hash': md5(b'version1').hexdigest(),
+            'hash': md5(b'version1', usedforsecurity=False).hexdigest(),
             'is_latest': False,
             'version_id': obj1_v1['id'],
         }])
@@ -2052,7 +2053,7 @@ class TestContainerOperations(TestObjectVersioningBase):
             'name': obj2,
             'bytes': 5,
             'content_type': 'text/blah-blah-blah',
-            'hash': md5(b'first').hexdigest(),
+            'hash': md5(b'first', usedforsecurity=False).hexdigest(),
             'is_latest': True,
             'version_id': 'null',
         }
@@ -2060,7 +2061,7 @@ class TestContainerOperations(TestObjectVersioningBase):
             'name': obj3,
             'bytes': 6,
             'content_type': 'text/plain',
-            'hash': md5(b'second').hexdigest(),
+            'hash': md5(b'second', usedforsecurity=False).hexdigest(),
             'is_latest': True,
             'version_id': 'null',
         }
@@ -2112,14 +2113,14 @@ class TestContainerOperations(TestObjectVersioningBase):
         # v1
         resp = obj.write(b'version1', hdrs={
             'Content-Type': 'text/jibberish11',
-            'ETag': md5(b'version1').hexdigest(),
+            'ETag': md5(b'version1', usedforsecurity=False).hexdigest(),
         }, return_resp=True)
         obj_v1 = resp.getheader('x-object-version-id')
 
         # v2
         resp = obj.write(b'version2', hdrs={
             'Content-Type': 'text/jibberish12',
-            'ETag': md5(b'version2').hexdigest(),
+            'ETag': md5(b'version2', usedforsecurity=False).hexdigest(),
         }, return_resp=True)
         obj_v2 = resp.getheader('x-object-version-id')
 
@@ -2130,7 +2131,7 @@ class TestContainerOperations(TestObjectVersioningBase):
 
         resp = obj.write(b'version4', hdrs={
             'Content-Type': 'text/jibberish14',
-            'ETag': md5(b'version4').hexdigest(),
+            'ETag': md5(b'version4', usedforsecurity=False).hexdigest(),
         }, return_resp=True)
         obj_v4 = resp.getheader('x-object-version-id')
 
@@ -2143,7 +2144,7 @@ class TestContainerOperations(TestObjectVersioningBase):
             'name': obj.name,
             'bytes': 8,
             'content_type': 'text/jibberish14',
-            'hash': md5(b'version4').hexdigest(),
+            'hash': md5(b'version4', usedforsecurity=False).hexdigest(),
             'is_latest': True,
             'version_id': obj_v4,
         }, {
@@ -2157,14 +2158,14 @@ class TestContainerOperations(TestObjectVersioningBase):
             'name': obj.name,
             'bytes': 8,
             'content_type': 'text/jibberish12',
-            'hash': md5(b'version2').hexdigest(),
+            'hash': md5(b'version2', usedforsecurity=False).hexdigest(),
             'is_latest': False,
             'version_id': obj_v2,
         }, {
             'name': obj.name,
             'bytes': 8,
             'content_type': 'text/jibberish11',
-            'hash': md5(b'version1').hexdigest(),
+            'hash': md5(b'version1', usedforsecurity=False).hexdigest(),
             'is_latest': False,
             'version_id': obj_v1,
         }])
@@ -2175,7 +2176,7 @@ class TestContainerOperations(TestObjectVersioningBase):
         # v5 - non-versioned
         obj.write(b'version5', hdrs={
             'Content-Type': 'text/jibberish15',
-            'ETag': md5(b'version5').hexdigest(),
+            'ETag': md5(b'version5', usedforsecurity=False).hexdigest(),
         })
 
         listing_parms = {'format': 'json', 'versions': None}
@@ -2187,14 +2188,14 @@ class TestContainerOperations(TestObjectVersioningBase):
             'name': obj.name,
             'bytes': 8,
             'content_type': 'text/jibberish15',
-            'hash': md5(b'version5').hexdigest(),
+            'hash': md5(b'version5', usedforsecurity=False).hexdigest(),
             'is_latest': True,
             'version_id': 'null',
         }, {
             'name': obj.name,
             'bytes': 8,
             'content_type': 'text/jibberish14',
-            'hash': md5(b'version4').hexdigest(),
+            'hash': md5(b'version4', usedforsecurity=False).hexdigest(),
             'is_latest': False,
             'version_id': obj_v4,
         }, {
@@ -2208,14 +2209,14 @@ class TestContainerOperations(TestObjectVersioningBase):
             'name': obj.name,
             'bytes': 8,
             'content_type': 'text/jibberish12',
-            'hash': md5(b'version2').hexdigest(),
+            'hash': md5(b'version2', usedforsecurity=False).hexdigest(),
             'is_latest': False,
             'version_id': obj_v2,
         }, {
             'name': obj.name,
             'bytes': 8,
             'content_type': 'text/jibberish11',
-            'hash': md5(b'version1').hexdigest(),
+            'hash': md5(b'version1', usedforsecurity=False).hexdigest(),
             'is_latest': False,
             'version_id': obj_v1,
         }])
@@ -2496,19 +2497,19 @@ class TestVersionsLocationWithVersioning(TestObjectVersioningBase):
         # v1
         obj.write(b'version1', hdrs={
             'Content-Type': 'text/jibberish11',
-            'ETag': md5(b'version1').hexdigest(),
+            'ETag': md5(b'version1', usedforsecurity=False).hexdigest(),
         })
 
         # v2
         obj.write(b'version2', hdrs={
             'Content-Type': 'text/jibberish12',
-            'ETag': md5(b'version2').hexdigest(),
+            'ETag': md5(b'version2', usedforsecurity=False).hexdigest(),
         })
 
         # v3
         obj.write(b'version3', hdrs={
             'Content-Type': 'text/jibberish13',
-            'ETag': md5(b'version3').hexdigest(),
+            'ETag': md5(b'version3', usedforsecurity=False).hexdigest(),
         })
 
         return obj
@@ -2526,7 +2527,7 @@ class TestVersionsLocationWithVersioning(TestObjectVersioningBase):
             'name': obj_name,
             'bytes': 8,
             'content_type': 'text/jibberish13',
-            'hash': md5(b'version3').hexdigest(),
+            'hash': md5(b'version3', usedforsecurity=False).hexdigest(),
             'is_latest': True,
             'version_id': 'null'
         }])
@@ -2543,13 +2544,13 @@ class TestVersionsLocationWithVersioning(TestObjectVersioningBase):
         self.assertEqual(prev_versions, [{
             'bytes': 8,
             'content_type': 'text/jibberish11',
-            'hash': md5(b'version1').hexdigest(),
+            'hash': md5(b'version1', usedforsecurity=False).hexdigest(),
             'is_latest': True,
             'version_id': 'null',
         }, {
             'bytes': 8,
             'content_type': 'text/jibberish12',
-            'hash': md5(b'version2').hexdigest(),
+            'hash': md5(b'version2', usedforsecurity=False).hexdigest(),
             'is_latest': True,
             'version_id': 'null'
         }])
diff --git a/test/functional/test_slo.py b/test/functional/test_slo.py
index 8003a2d70..178e12680 100644
--- a/test/functional/test_slo.py
+++ b/test/functional/test_slo.py
@@ -16,7 +16,6 @@
 
 import base64
 import email.parser
-import hashlib
 import itertools
 import json
 from copy import deepcopy
@@ -24,6 +23,7 @@ from copy import deepcopy
 import six
 
 from swift.common.swob import normalize_etag
+from swift.common.utils import md5
 
 import test.functional as tf
 from test.functional import cluster_info, SkipTest
@@ -124,9 +124,9 @@ class TestSloEnv(BaseEnv):
         cd_json = json.dumps([
             seg_info['seg_c'], seg_info['seg_d']]).encode('ascii')
         file_item.write(cd_json, parms={'multipart-manifest': 'put'})
-        cd_etag = hashlib.md5((
+        cd_etag = md5((
             seg_info['seg_c']['etag'] + seg_info['seg_d']['etag']
-        ).encode('ascii')).hexdigest()
+        ).encode('ascii'), usedforsecurity=False).hexdigest()
 
         file_item = cls.container.file("manifest-bcd-submanifest")
         file_item.write(
@@ -137,8 +137,9 @@ class TestSloEnv(BaseEnv):
                          'path': '/%s/%s' % (cls.container.name,
                                              'manifest-cd')}]).encode('ascii'),
             parms={'multipart-manifest': 'put'})
-        bcd_submanifest_etag = hashlib.md5((
-            seg_info['seg_b']['etag'] + cd_etag).encode('ascii')).hexdigest()
+        bcd_submanifest_etag = md5((
+            seg_info['seg_b']['etag'] + cd_etag).encode('ascii'),
+            usedforsecurity=False).hexdigest()
 
         file_item = cls.container.file("manifest-abcde-submanifest")
         file_item.write(
@@ -152,9 +153,10 @@ class TestSloEnv(BaseEnv):
                                      'manifest-bcd-submanifest')},
                 seg_info['seg_e']]).encode('ascii'),
             parms={'multipart-manifest': 'put'})
-        abcde_submanifest_etag = hashlib.md5((
+        abcde_submanifest_etag = md5((
             seg_info['seg_a']['etag'] + bcd_submanifest_etag +
-            seg_info['seg_e']['etag']).encode('ascii')).hexdigest()
+            seg_info['seg_e']['etag']).encode('ascii'),
+            usedforsecurity=False).hexdigest()
         abcde_submanifest_size = (seg_info['seg_a']['size_bytes'] +
                                   seg_info['seg_b']['size_bytes'] +
                                   seg_info['seg_c']['size_bytes'] +
@@ -180,11 +182,11 @@ class TestSloEnv(BaseEnv):
                                      'manifest-abcde-submanifest'),
                  'range': '3145727-3145728'}]).encode('ascii'),  # 'cd'
             parms={'multipart-manifest': 'put'})
-        ranged_manifest_etag = hashlib.md5((
+        ranged_manifest_etag = md5((
             abcde_submanifest_etag + ':3145727-4194304;' +
             abcde_submanifest_etag + ':524288-1572863;' +
             abcde_submanifest_etag + ':3145727-3145728;'
-        ).encode('ascii')).hexdigest()
+        ).encode('ascii'), usedforsecurity=False).hexdigest()
         ranged_manifest_size = 2 * 1024 * 1024 + 4
 
         file_item = cls.container.file("ranged-submanifest")
@@ -263,12 +265,13 @@ class TestSlo(Base):
                 "Expected slo_enabled to be True/False, got %r" %
                 (self.env.slo_enabled,))
 
-        manifest_abcde_hash = hashlib.md5()
+        manifest_abcde_hash = md5(usedforsecurity=False)
         for letter in (b'a', b'b', b'c', b'd'):
-            manifest_abcde_hash.update(hashlib.md5(
-                letter * 1024 * 1024).hexdigest().encode('ascii'))
-        manifest_abcde_hash.update(hashlib.md5(
-            b'e').hexdigest().encode('ascii'))
+            manifest_abcde_hash.update(
+                md5(letter * 1024 * 1024, usedforsecurity=False)
+                .hexdigest().encode('ascii'))
+        manifest_abcde_hash.update(
+            md5(b'e', usedforsecurity=False).hexdigest().encode('ascii'))
         self.manifest_abcde_etag = manifest_abcde_hash.hexdigest()
 
     def test_slo_get_simple_manifest(self):
@@ -501,7 +504,7 @@ class TestSlo(Base):
     def test_slo_etag_is_quote_wrapped_hash_of_etags_submanifests(self):
 
         def hd(x):
-            return hashlib.md5(x).hexdigest().encode('ascii')
+            return md5(x, usedforsecurity=False).hexdigest().encode('ascii')
 
         expected_etag = hd(hd(b'a' * 1024 * 1024) +
                            hd(hd(b'b' * 1024 * 1024) +
@@ -534,7 +537,9 @@ class TestSlo(Base):
             file_item.write(
                 json.dumps([{
                     'size_bytes': 1024 * 1024 - 1,
-                    'etag': hashlib.md5(b'a' * 1024 * 1024).hexdigest(),
+                    'etag': md5(
+                        b'a' * 1024 * 1024,
+                        usedforsecurity=False).hexdigest(),
                     'path': '/%s/%s' % (self.env.container.name, 'seg_a'),
                 }]).encode('ascii'),
                 parms={'multipart-manifest': 'put'})
@@ -549,7 +554,8 @@ class TestSlo(Base):
             file_item.write(
                 json.dumps([{
                     'size_bytes': 1024 * 1024,
-                    'etag': hashlib.md5(b'a' * 1024 * 1024).hexdigest(),
+                    'etag': md5(b'a' * 1024 * 1024,
+                                usedforsecurity=False).hexdigest(),
                     'path': '/%s/%s' % (self.env.container.name, 'seg_a'),
                 }]).encode('ascii'),
                 parms={'multipart-manifest': 'put'},
@@ -559,8 +565,8 @@ class TestSlo(Base):
 
     def test_slo_client_etag(self):
         file_item = self.env.container.file("manifest-a-b-etag")
-        etag_a = hashlib.md5(b'a' * 1024 * 1024).hexdigest()
-        etag_b = hashlib.md5(b'b' * 1024 * 1024).hexdigest()
+        etag_a = md5(b'a' * 1024 * 1024, usedforsecurity=False).hexdigest()
+        etag_b = md5(b'b' * 1024 * 1024, usedforsecurity=False).hexdigest()
         file_item.write(
             json.dumps([{
                 'size_bytes': 1024 * 1024,
@@ -571,7 +577,8 @@ class TestSlo(Base):
                 'path': '/%s/%s' % (self.env.container.name, 'seg_b'),
             }]).encode('ascii'),
             parms={'multipart-manifest': 'put'},
-            hdrs={'Etag': hashlib.md5((etag_a + etag_b).encode()).hexdigest()})
+            hdrs={'Etag': md5((etag_a + etag_b).encode(),
+                              usedforsecurity=False).hexdigest()})
         self.assert_status(201)
 
     def test_slo_unspecified_etag(self):
@@ -590,7 +597,8 @@ class TestSlo(Base):
         file_item.write(
             json.dumps([{
                 'size_bytes': None,
-                'etag': hashlib.md5(b'a' * 1024 * 1024).hexdigest(),
+                'etag': md5(b'a' * 1024 * 1024,
+                            usedforsecurity=False).hexdigest(),
                 'path': '/%s/%s' % (self.env.container.name, 'seg_a'),
             }]).encode('ascii'),
             parms={'multipart-manifest': 'put'})
@@ -622,7 +630,8 @@ class TestSlo(Base):
         file_item = self.env.container.file("manifest-a-missing-size")
         file_item.write(
             json.dumps([{
-                'etag': hashlib.md5(b'a' * 1024 * 1024).hexdigest(),
+                'etag': md5(b'a' * 1024 * 1024,
+                            usedforsecurity=False).hexdigest(),
                 'path': '/%s/%s' % (self.env.container.name, 'seg_a'),
             }]).encode('ascii'),
             parms={'multipart-manifest': 'put'})
@@ -642,7 +651,8 @@ class TestSlo(Base):
         try:
             file_item.write(
                 json.dumps([{
-                    'teag': hashlib.md5(b'a' * 1024 * 1024).hexdigest(),
+                    'teag': md5(b'a' * 1024 * 1024,
+                                usedforsecurity=False).hexdigest(),
                     'size_bytes': 1024 * 1024,
                     'path': '/%s/%s' % (self.env.container.name, 'seg_a'),
                 }]).encode('ascii'),
@@ -657,7 +667,8 @@ class TestSlo(Base):
         try:
             file_item.write(
                 json.dumps([{
-                    'etag': hashlib.md5(b'a' * 1024 * 1024).hexdigest(),
+                    'etag': md5(b'a' * 1024 * 1024,
+                                usedforsecurity=False).hexdigest(),
                     'siz_bytes': 1024 * 1024,
                     'path': '/%s/%s' % (self.env.container.name, 'seg_a'),
                 }]).encode('ascii'),
@@ -673,13 +684,16 @@ class TestSlo(Base):
             file_item.write(
                 json.dumps([
                     {'size_bytes': 1024 * 1024,
-                     'etag': hashlib.md5(b'a' * 1024 * 1024).hexdigest(),
+                     'etag': md5(b'a' * 1024 * 1024,
+                                 usedforsecurity=False).hexdigest(),
                      'path': '/%s/%s' % (self.env.container.name, 'seg_a')},
                     {'size_bytes': 1024 * 1024,
-                     'etag': hashlib.md5(b'b' * 1024 * 1024).hexdigest(),
+                     'etag': md5(b'b' * 1024 * 1024,
+                                 usedforsecurity=False).hexdigest(),
                      'path': '/%s/%s' % (self.env.container.name, 'seg_b')},
                     {'size_bytes': 1024 * 1024,
-                     'etag': hashlib.md5(b'c' * 1024 * 1024).hexdigest(),
+                     'etag': md5(b'c' * 1024 * 1024,
+                                 usedforsecurity=False).hexdigest(),
                      'path': '/%s/%s' % (self.env.container.name, 'seg_c')},
                 ]).encode('ascii'),
                 parms={'multipart-manifest': 'put'})
@@ -722,7 +736,7 @@ class TestSlo(Base):
         source.initialize(parms={'multipart-manifest': 'get'})
         source_contents = source.read(parms={'multipart-manifest': 'get'})
         source_json = json.loads(source_contents)
-        manifest_etag = hashlib.md5(source_contents).hexdigest()
+        manifest_etag = md5(source_contents, usedforsecurity=False).hexdigest()
         if tf.cluster_info.get('etag_quoter', {}).get('enable_by_default'):
             manifest_etag = '"%s"' % manifest_etag
         self.assertEqual(manifest_etag, source.etag)
@@ -798,7 +812,7 @@ class TestSlo(Base):
         source.initialize(parms={'multipart-manifest': 'get'})
         source_contents = source.read(parms={'multipart-manifest': 'get'})
         source_json = json.loads(source_contents)
-        manifest_etag = hashlib.md5(source_contents).hexdigest()
+        manifest_etag = md5(source_contents, usedforsecurity=False).hexdigest()
         if tf.cluster_info.get('etag_quoter', {}).get('enable_by_default'):
             manifest_etag = '"%s"' % manifest_etag
         self.assertEqual(manifest_etag, source.etag)
@@ -1091,16 +1105,18 @@ class TestSlo(Base):
 
         self.assertEqual(len(value), 2)
         self.assertEqual(value[0]['bytes'], 1024 * 1024)
-        self.assertEqual(value[0]['hash'],
-                         hashlib.md5(b'd' * 1024 * 1024).hexdigest())
+        self.assertEqual(
+            value[0]['hash'],
+            md5(b'd' * 1024 * 1024, usedforsecurity=False).hexdigest())
         expected_name = '/%s/seg_d' % self.env.container.name
         if six.PY2:
             expected_name = expected_name.decode("utf-8")
         self.assertEqual(value[0]['name'], expected_name)
 
         self.assertEqual(value[1]['bytes'], 1024 * 1024)
-        self.assertEqual(value[1]['hash'],
-                         hashlib.md5(b'b' * 1024 * 1024).hexdigest())
+        self.assertEqual(
+            value[1]['hash'],
+            md5(b'b' * 1024 * 1024, usedforsecurity=False).hexdigest())
         expected_name = '/%s/seg_b' % self.env.container.name
         if six.PY2:
             expected_name = expected_name.decode("utf-8")
@@ -1110,7 +1126,8 @@ class TestSlo(Base):
         manifest = self.env.container.file("manifest-db")
         got_body = manifest.read(parms={'multipart-manifest': 'get',
                                         'format': 'raw'})
-        self.assert_etag(hashlib.md5(got_body).hexdigest())
+        self.assert_etag(
+            md5(got_body, usedforsecurity=False).hexdigest())
 
         # raw format should have the actual manifest object content-type
         self.assertEqual('application/octet-stream', manifest.content_type)
@@ -1124,15 +1141,17 @@ class TestSlo(Base):
             set(value[0].keys()), set(('size_bytes', 'etag', 'path')))
         self.assertEqual(len(value), 2)
         self.assertEqual(value[0]['size_bytes'], 1024 * 1024)
-        self.assertEqual(value[0]['etag'],
-                         hashlib.md5(b'd' * 1024 * 1024).hexdigest())
+        self.assertEqual(
+            value[0]['etag'],
+            md5(b'd' * 1024 * 1024, usedforsecurity=False).hexdigest())
         expected_name = '/%s/seg_d' % self.env.container.name
         if six.PY2:
             expected_name = expected_name.decode("utf-8")
         self.assertEqual(value[0]['path'], expected_name)
         self.assertEqual(value[1]['size_bytes'], 1024 * 1024)
-        self.assertEqual(value[1]['etag'],
-                         hashlib.md5(b'b' * 1024 * 1024).hexdigest())
+        self.assertEqual(
+            value[1]['etag'],
+            md5(b'b' * 1024 * 1024, usedforsecurity=False).hexdigest())
         expected_name = '/%s/seg_b' % self.env.container.name
         if six.PY2:
             expected_name = expected_name.decode("utf-8")
diff --git a/test/functional/test_symlink.py b/test/functional/test_symlink.py
index 1b6ec820f..372d2b3a8 100755
--- a/test/functional/test_symlink.py
+++ b/test/functional/test_symlink.py
@@ -26,7 +26,7 @@ from uuid import uuid4
 
 from swift.common.http import is_success
 from swift.common.swob import normalize_etag
-from swift.common.utils import json, MD5_OF_EMPTY_STRING
+from swift.common.utils import json, MD5_OF_EMPTY_STRING, md5
 from swift.common.middleware.slo import SloGetContext
 from test.functional import check_response, retry, requires_acls, \
     cluster_info, SkipTest
@@ -1798,11 +1798,13 @@ class TestSymlinkToSloSegments(Base):
             self.fail('Failed to find manifest file in container listing')
 
     def test_slo_etag_is_hash_of_etags(self):
-        expected_hash = hashlib.md5()
-        expected_hash.update(hashlib.md5(
-            b'a' * 1024 * 1024).hexdigest().encode('ascii'))
-        expected_hash.update(hashlib.md5(
-            b'b' * 1024 * 1024).hexdigest().encode('ascii'))
+        expected_hash = md5(usedforsecurity=False)
+        expected_hash.update((
+            md5(b'a' * 1024 * 1024, usedforsecurity=False)
+            .hexdigest().encode('ascii')))
+        expected_hash.update((
+            md5(b'b' * 1024 * 1024, usedforsecurity=False)
+            .hexdigest().encode('ascii')))
         expected_etag = expected_hash.hexdigest()
 
         file_item = self.env.container.file('manifest-linkto-ab')
@@ -1823,7 +1825,7 @@ class TestSymlinkToSloSegments(Base):
         source = self.env.container.file("manifest-linkto-ab")
         source_contents = source.read(parms={'multipart-manifest': 'get'})
         source_json = json.loads(source_contents)
-        manifest_etag = hashlib.md5(source_contents).hexdigest()
+        manifest_etag = md5(source_contents, usedforsecurity=False).hexdigest()
         if tf.cluster_info.get('etag_quoter', {}).get('enable_by_default'):
             manifest_etag = '"%s"' % manifest_etag
 
diff --git a/test/functional/tests.py b/test/functional/tests.py
index 51b4c663f..ff3cf5c93 100644
--- a/test/functional/tests.py
+++ b/test/functional/tests.py
@@ -15,7 +15,6 @@
 # limitations under the License.
 
 from datetime import datetime
-import hashlib
 import io
 import locale
 import random
@@ -28,6 +27,7 @@ from copy import deepcopy
 import eventlet
 from swift.common.http import is_success, is_client_error
 from swift.common.swob import normalize_etag
+from swift.common.utils import md5
 from email.utils import parsedate
 
 if six.PY2:
@@ -1371,7 +1371,8 @@ class TestFile(Base):
                             'x-object-meta-fruit': 'Banana',
                             'accept-ranges': 'bytes',
                             'content-type': 'application/test',
-                            'etag': hashlib.md5(obj_data).hexdigest(),
+                            'etag': md5(
+                                obj_data, usedforsecurity=False).hexdigest(),
                             'last-modified': mock.ANY,
                             'date': mock.ANY,
                             'x-delete-at': mock.ANY,
@@ -1538,7 +1539,7 @@ class TestFile(Base):
         self.assertTrue(dest_cont.create())
 
         expected_body = data[100:201]
-        expected_etag = hashlib.md5(expected_body)
+        expected_etag = md5(expected_body, usedforsecurity=False)
         # copy both from within and across containers
         for cont in (self.env.container, dest_cont):
             # copy both with and without initial slash
diff --git a/test/probe/common.py b/test/probe/common.py
index 03557843a..9277198f7 100644
--- a/test/probe/common.py
+++ b/test/probe/common.py
@@ -24,7 +24,6 @@ from textwrap import dedent
 from time import sleep, time
 from collections import defaultdict
 import unittest
-from hashlib import md5
 from uuid import uuid4
 import shutil
 from six.moves.http_client import HTTPConnection
@@ -34,7 +33,8 @@ from swiftclient import get_auth, head_account, client
 from swift.common import internal_client, direct_client
 from swift.common.direct_client import DirectClientException
 from swift.common.ring import Ring
-from swift.common.utils import readconf, renamer, rsync_module_interpolation
+from swift.common.utils import readconf, renamer, \
+    rsync_module_interpolation, md5
 from swift.common.manager import Manager
 from swift.common.storage_policy import POLICIES, EC_POLICY, REPL_POLICY
 from swift.obj.diskfile import get_data_dir
@@ -297,7 +297,7 @@ class Body(object):
 
     def __init__(self, total=3.5 * 2 ** 20):
         self.length = int(total)
-        self.hasher = md5()
+        self.hasher = md5(usedforsecurity=False)
         self.read_amount = 0
         self.chunk = uuid4().hex.encode('ascii') * 2 ** 10
         self.buff = b''
diff --git a/test/probe/test_container_merge_policy_index.py b/test/probe/test_container_merge_policy_index.py
index c8b1c6fcd..441380590 100644
--- a/test/probe/test_container_merge_policy_index.py
+++ b/test/probe/test_container_merge_policy_index.py
@@ -12,7 +12,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from hashlib import md5
 import time
 import uuid
 import random
@@ -23,6 +22,7 @@ from swift.common.internal_client import InternalClient
 from swift.common import utils, direct_client
 from swift.common.storage_policy import POLICIES
 from swift.common.http import HTTP_NOT_FOUND
+from swift.common.utils import md5
 from swift.container.reconciler import MISPLACED_OBJECTS_ACCOUNT
 from test.probe.brain import BrainSplitter, InternalBrainSplitter
 from swift.common.request_helpers import get_reserved_name
@@ -266,7 +266,7 @@ class TestContainerMergePolicyIndex(ReplProbeTest):
             part_name = self.get_object_name('manifest_part_%0.2d' % i)
             manifest_entry = {
                 "path": "/%s/%s" % (self.container_name, part_name),
-                "etag": md5(body).hexdigest(),
+                "etag": md5(body, usedforsecurity=False).hexdigest(),
                 "size_bytes": len(body),
             }
             self.brain.client.put_object(self.container_name, part_name, {},
diff --git a/test/probe/test_object_handoff.py b/test/probe/test_object_handoff.py
index 568237a2a..f4dc21ab3 100644
--- a/test/probe/test_object_handoff.py
+++ b/test/probe/test_object_handoff.py
@@ -19,7 +19,6 @@ from __future__ import print_function
 from unittest import main
 from uuid import uuid4
 import random
-from hashlib import md5
 from collections import defaultdict
 import os
 import socket
@@ -30,6 +29,7 @@ from swiftclient import client
 from swift.common import direct_client
 from swift.common.exceptions import ClientException
 from swift.common.manager import Manager
+from swift.common.utils import md5
 from test.probe.common import (kill_server, start_server, ReplProbeTest,
                                ECProbeTest, Body)
 
@@ -373,7 +373,7 @@ class TestECObjectHandoff(ECProbeTest):
                                           container_name,
                                           object_name,
                                           resp_chunk_size=64 * 2 ** 10)
-        resp_checksum = md5()
+        resp_checksum = md5(usedforsecurity=False)
         for chunk in body:
             resp_checksum.update(chunk)
         return resp_checksum.hexdigest()
diff --git a/test/probe/test_reconstructor_rebuild.py b/test/probe/test_reconstructor_rebuild.py
index 37ffddacd..60fe89bf4 100644
--- a/test/probe/test_reconstructor_rebuild.py
+++ b/test/probe/test_reconstructor_rebuild.py
@@ -17,7 +17,6 @@
 import errno
 import json
 from contextlib import contextmanager
-from hashlib import md5
 import unittest
 import uuid
 import shutil
@@ -27,6 +26,7 @@ import time
 import six
 
 from swift.common.direct_client import DirectClientException
+from swift.common.utils import md5
 from test.probe.common import ECProbeTest
 
 from swift.common import direct_client
@@ -40,7 +40,7 @@ class Body(object):
 
     def __init__(self, total=3.5 * 2 ** 20):
         self.total = int(total)
-        self.hasher = md5()
+        self.hasher = md5(usedforsecurity=False)
         self.size = 0
         self.chunk = b'test' * 16 * 2 ** 10
 
@@ -118,7 +118,7 @@ class TestReconstructorRebuild(ECProbeTest):
                                           self.container_name,
                                           self.object_name,
                                           resp_chunk_size=64 * 2 ** 10)
-        resp_checksum = md5()
+        resp_checksum = md5(usedforsecurity=False)
         for chunk in body:
             resp_checksum.update(chunk)
         return headers, resp_checksum.hexdigest()
@@ -140,7 +140,7 @@ class TestReconstructorRebuild(ECProbeTest):
         headers, data = direct_client.direct_get_object(
             node, part, acc, con, obj, headers=req_headers,
             resp_chunk_size=64 * 2 ** 20)
-        hasher = md5()
+        hasher = md5(usedforsecurity=False)
         for chunk in data:
             hasher.update(chunk)
         return headers, hasher.hexdigest()
diff --git a/test/probe/test_reconstructor_revert.py b/test/probe/test_reconstructor_revert.py
index 572793ddb..18bcb74d5 100644
--- a/test/probe/test_reconstructor_revert.py
+++ b/test/probe/test_reconstructor_revert.py
@@ -14,7 +14,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from hashlib import md5
 import itertools
 import unittest
 import uuid
@@ -27,6 +26,7 @@ from test.probe.common import ECProbeTest, Body
 from swift.common import direct_client
 from swift.common.storage_policy import EC_POLICY
 from swift.common.manager import Manager
+from swift.common.utils import md5
 from swift.obj import reconstructor
 
 from swiftclient import client
@@ -49,7 +49,7 @@ class TestReconstructorRevert(ECProbeTest):
                                           self.container_name,
                                           self.object_name,
                                           resp_chunk_size=64 * 2 ** 10)
-        resp_checksum = md5()
+        resp_checksum = md5(usedforsecurity=False)
         for chunk in body:
             resp_checksum.update(chunk)
         return resp_checksum.hexdigest()
@@ -60,7 +60,7 @@ class TestReconstructorRevert(ECProbeTest):
             node, part, self.account, self.container_name,
             self.object_name, headers=req_headers,
             resp_chunk_size=64 * 2 ** 20)
-        hasher = md5()
+        hasher = md5(usedforsecurity=False)
         for chunk in data:
             hasher.update(chunk)
         return hasher.hexdigest()
diff --git a/test/probe/test_sharder.py b/test/probe/test_sharder.py
index ae02d6546..9b3c4c70b 100644
--- a/test/probe/test_sharder.py
+++ b/test/probe/test_sharder.py
@@ -12,7 +12,6 @@
 # implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-import hashlib
 import json
 import os
 import shutil
@@ -27,7 +26,7 @@ from swift.common import direct_client, utils
 from swift.common.manager import Manager
 from swift.common.memcached import MemcacheRing
 from swift.common.utils import ShardRange, parse_db_filename, get_db_files, \
-    quorum_size, config_true_value, Timestamp
+    quorum_size, config_true_value, Timestamp, md5
 from swift.container.backend import ContainerBroker, UNSHARDED, SHARDING
 from swift.container.sharder import CleavingContext
 from swiftclient import client, get_auth, ClientException
@@ -2082,7 +2081,8 @@ class TestContainerSharding(BaseTestContainerSharding):
             shard_broker.merge_items(
                 [{'name': name, 'created_at': Timestamp.now().internal,
                   'size': 0, 'content_type': 'text/plain',
-                  'etag': hashlib.md5().hexdigest(), 'deleted': deleted,
+                  'etag': md5(usedforsecurity=False).hexdigest(),
+                  'deleted': deleted,
                   'storage_policy_index': shard_broker.storage_policy_index}])
             return shard_nodes[0]
 
diff --git a/test/s3api/test_versioning.py b/test/s3api/test_versioning.py
index 7f2364dd5..ec06594fa 100644
--- a/test/s3api/test_versioning.py
+++ b/test/s3api/test_versioning.py
@@ -14,13 +14,13 @@
 # limitations under the License.
 
 import time
-import hashlib
 from collections import defaultdict
 
 from botocore.exceptions import ClientError
 import six
 
 from swift.common.header_key_dict import HeaderKeyDict
+from swift.common.utils import md5
 from test.s3api import BaseS3TestCase
 
 
@@ -123,7 +123,7 @@ class TestObjectVersioning(BaseS3TestCase):
 
     def test_upload_fileobj_versioned(self):
         obj_data = self.create_name('some-data').encode('ascii')
-        obj_etag = hashlib.md5(obj_data).hexdigest()
+        obj_etag = md5(obj_data, usedforsecurity=False).hexdigest()
         obj_name = self.create_name('versioned-obj')
         self.client.upload_fileobj(six.BytesIO(obj_data),
                                    self.bucket_name, obj_name)
@@ -157,7 +157,7 @@ class TestObjectVersioning(BaseS3TestCase):
 
         # overwrite the object
         new_obj_data = self.create_name('some-new-data').encode('ascii')
-        new_obj_etag = hashlib.md5(new_obj_data).hexdigest()
+        new_obj_etag = md5(new_obj_data, usedforsecurity=False).hexdigest()
         self.client.upload_fileobj(six.BytesIO(new_obj_data),
                                    self.bucket_name, obj_name)
 
@@ -199,7 +199,7 @@ class TestObjectVersioning(BaseS3TestCase):
         obj_name = self.create_name('versioned-obj')
         for i in range(3):
             obj_data = self.create_name('some-data-%s' % i).encode('ascii')
-            etags.insert(0, hashlib.md5(obj_data).hexdigest())
+            etags.insert(0, md5(obj_data, usedforsecurity=False).hexdigest())
             self.client.upload_fileobj(six.BytesIO(obj_data),
                                        self.bucket_name, obj_name)
 
@@ -319,7 +319,7 @@ class TestObjectVersioning(BaseS3TestCase):
         obj_name = self.create_name('versioned-obj')
         for i in range(3):
             obj_data = self.create_name('some-data-%s' % i).encode('ascii')
-            etags.insert(0, hashlib.md5(obj_data).hexdigest())
+            etags.insert(0, md5(obj_data, usedforsecurity=False).hexdigest())
             self.client.upload_fileobj(six.BytesIO(obj_data),
                                        self.bucket_name, obj_name)
             # and make a delete marker
@@ -490,7 +490,7 @@ class TestObjectVersioning(BaseS3TestCase):
         for i in range(3):
             obj_data = self.create_name('some-data-%s' % i).encode('ascii')
             # TODO: pull etag from response instead
-            etags.insert(0, hashlib.md5(obj_data).hexdigest())
+            etags.insert(0, md5(obj_data, usedforsecurity=False).hexdigest())
             self.client.upload_fileobj(
                 six.BytesIO(obj_data), self.bucket_name, obj_name)
 
@@ -571,12 +571,14 @@ class TestObjectVersioning(BaseS3TestCase):
         etags = []
         for i in range(3):
             obj_data = self.create_name('some-data-%s' % i).encode('ascii')
-            etags.insert(0, '"%s"' % hashlib.md5(obj_data).hexdigest())
+            etags.insert(0, '"%s"' % md5(
+                obj_data, usedforsecurity=False).hexdigest())
             self.client.upload_fileobj(
                 six.BytesIO(obj_data), self.bucket_name, obj01_name)
         for i in range(3):
             obj_data = self.create_name('some-data-%s' % i).encode('ascii')
-            etags.insert(0, '"%s"' % hashlib.md5(obj_data).hexdigest())
+            etags.insert(0, '"%s"' % md5(
+                obj_data, usedforsecurity=False).hexdigest())
             self.client.upload_fileobj(
                 six.BytesIO(obj_data), self.bucket_name, obj00_name)
         resp = self.client.list_object_versions(Bucket=self.bucket_name)
@@ -653,7 +655,8 @@ class TestObjectVersioning(BaseS3TestCase):
             obj_name = self.create_name('versioned-obj')
             for i in range(3):
                 obj_data = self.create_name('some-data-%s' % i).encode('ascii')
-                etags[obj_name].insert(0, hashlib.md5(obj_data).hexdigest())
+                etags[obj_name].insert(0, md5(
+                    obj_data, usedforsecurity=False).hexdigest())
                 self.client.upload_fileobj(
                     six.BytesIO(obj_data), self.bucket_name, obj_name)
 
@@ -708,7 +711,8 @@ class TestObjectVersioning(BaseS3TestCase):
         obj_name = self.create_name('versioned-obj')
         for i in range(3):
             obj_data = self.create_name('some-data-%s' % i).encode('ascii')
-            etags.insert(0, hashlib.md5(obj_data).hexdigest())
+            etags.insert(0, md5(
+                obj_data, usedforsecurity=False).hexdigest())
             self.client.upload_fileobj(
                 six.BytesIO(obj_data), self.bucket_name, obj_name)
 
diff --git a/test/unit/__init__.py b/test/unit/__init__.py
index a9df23645..0ac52e9b1 100644
--- a/test/unit/__init__.py
+++ b/test/unit/__init__.py
@@ -23,7 +23,6 @@ import logging.handlers
 import sys
 from contextlib import contextmanager, closing
 from collections import defaultdict, Iterable
-from hashlib import md5
 import itertools
 from numbers import Number
 from tempfile import NamedTemporaryFile
@@ -48,7 +47,7 @@ from six.moves.http_client import HTTPException
 from swift.common import storage_policy, swob, utils
 from swift.common.storage_policy import (StoragePolicy, ECStoragePolicy,
                                          VALID_EC_TYPES)
-from swift.common.utils import Timestamp, NOTICE
+from swift.common.utils import Timestamp, NOTICE, md5
 from test import get_config
 from swift.common.header_key_dict import HeaderKeyDict
 from swift.common.ring import Ring, RingData, RingBuilder
@@ -65,7 +64,7 @@ class SkipTest(unittest.SkipTest):
     pass
 
 
-EMPTY_ETAG = md5().hexdigest()
+EMPTY_ETAG = md5(usedforsecurity=False).hexdigest()
 
 # try not to import this module from swift
 if not os.path.basename(sys.argv[0]).startswith('swift'):
@@ -970,7 +969,8 @@ def fake_http_connect(*code_iter, **kwargs):
             etag = self.etag
             if not etag:
                 if isinstance(self.body, bytes):
-                    etag = '"' + md5(self.body).hexdigest() + '"'
+                    etag = ('"' + md5(
+                        self.body, usedforsecurity=False).hexdigest() + '"')
                 else:
                     etag = '"68b329da9893e34099c7d8ad5cb9c940"'
 
@@ -1262,7 +1262,7 @@ def make_ec_object_stub(test_body, policy, timestamp):
     test_body = test_body or (
         b'test' * segment_size)[:-random.randint(1, 1000)]
     timestamp = timestamp or utils.Timestamp.now()
-    etag = md5(test_body).hexdigest()
+    etag = md5(test_body, usedforsecurity=False).hexdigest()
     ec_archive_bodies = encode_frag_archive_bodies(policy, test_body)
 
     return {
diff --git a/test/unit/account/test_backend.py b/test/unit/account/test_backend.py
index 3556a1ad0..a284bc246 100644
--- a/test/unit/account/test_backend.py
+++ b/test/unit/account/test_backend.py
@@ -16,7 +16,6 @@
 """ Tests for swift.account.backend """
 
 from collections import defaultdict
-import hashlib
 import json
 import unittest
 import pickle
@@ -40,6 +39,7 @@ from test.unit import patch_policies, with_tempdir, make_timestamp_iter
 from swift.common.db import DatabaseConnectionError
 from swift.common.request_helpers import get_reserved_name
 from swift.common.storage_policy import StoragePolicy, POLICIES
+from swift.common.utils import md5
 
 from test.unit.common import test_db
 
@@ -821,10 +821,10 @@ class TestAccountBroker(unittest.TestCase):
                              POLICIES.default.idx)
         text = '%s-%s' % ('a', "%s-%s-%s-%s" % (
                Timestamp(1).internal, Timestamp(0).internal, 0, 0))
-        hasha = hashlib.md5(text.encode('ascii')).digest()
+        hasha = md5(text.encode('ascii'), usedforsecurity=False).digest()
         text = '%s-%s' % ('b', "%s-%s-%s-%s" % (
                Timestamp(2).internal, Timestamp(0).internal, 0, 0))
-        hashb = hashlib.md5(text.encode('ascii')).digest()
+        hashb = md5(text.encode('ascii'), usedforsecurity=False).digest()
         hashc = ''.join(('%02x' % (ord(a) ^ ord(b) if six.PY2 else a ^ b)
                          for a, b in zip(hasha, hashb)))
         self.assertEqual(broker.get_info()['hash'], hashc)
@@ -833,7 +833,7 @@ class TestAccountBroker(unittest.TestCase):
                              POLICIES.default.idx)
         text = '%s-%s' % ('b', "%s-%s-%s-%s" % (
                Timestamp(3).internal, Timestamp(0).internal, 0, 0))
-        hashb = hashlib.md5(text.encode('ascii')).digest()
+        hashb = md5(text.encode('ascii'), usedforsecurity=False).digest()
         hashc = ''.join(('%02x' % (ord(a) ^ ord(b) if six.PY2 else a ^ b)
                          for a, b in zip(hasha, hashb)))
         self.assertEqual(broker.get_info()['hash'], hashc)
diff --git a/test/unit/common/middleware/crypto/crypto_helpers.py b/test/unit/common/middleware/crypto/crypto_helpers.py
index 085f9544c..333ca0faf 100644
--- a/test/unit/common/middleware/crypto/crypto_helpers.py
+++ b/test/unit/common/middleware/crypto/crypto_helpers.py
@@ -13,10 +13,10 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 import base64
-import hashlib
 
 from swift.common.exceptions import UnknownSecretIdError
 from swift.common.middleware.crypto.crypto_utils import Crypto
+from swift.common.utils import md5
 
 
 def fetch_crypto_keys(key_id=None):
@@ -41,7 +41,7 @@ def fetch_crypto_keys(key_id=None):
 
 
 def md5hex(s):
-    return hashlib.md5(s).hexdigest()
+    return md5(s, usedforsecurity=False).hexdigest()
 
 
 def encrypt(val, key=None, iv=None, ctxt=None):
diff --git a/test/unit/common/middleware/helpers.py b/test/unit/common/middleware/helpers.py
index ffac87bff..e07c2a7b3 100644
--- a/test/unit/common/middleware/helpers.py
+++ b/test/unit/common/middleware/helpers.py
@@ -16,14 +16,13 @@
 # This stuff can't live in test/unit/__init__.py due to its swob dependency.
 
 from collections import defaultdict, namedtuple
-from hashlib import md5
 from six.moves.urllib import parse
 from swift.common import swob
 from swift.common.header_key_dict import HeaderKeyDict
 from swift.common.request_helpers import is_user_meta, \
     is_object_transient_sysmeta, resolve_etag_is_at_header
 from swift.common.swob import HTTPNotImplemented
-from swift.common.utils import split_path
+from swift.common.utils import split_path, md5
 
 from test.unit import FakeLogger, FakeRing
 
@@ -159,7 +158,7 @@ class FakeSwift(object):
                 footers = HeaderKeyDict()
                 env['swift.callback.update_footers'](footers)
                 req.headers.update(footers)
-            etag = md5(req_body).hexdigest()
+            etag = md5(req_body, usedforsecurity=False).hexdigest()
             headers.setdefault('Etag', etag)
             headers.setdefault('Content-Length', len(req_body))
 
diff --git a/test/unit/common/middleware/s3api/test_acl.py b/test/unit/common/middleware/s3api/test_acl.py
index b64576324..f194097de 100644
--- a/test/unit/common/middleware/s3api/test_acl.py
+++ b/test/unit/common/middleware/s3api/test_acl.py
@@ -18,13 +18,13 @@ import unittest
 import mock
 
 from io import BytesIO
-from hashlib import md5
 
 from swift.common.swob import Request, HTTPAccepted
 from swift.common.middleware.s3api.etree import fromstring, tostring, \
     Element, SubElement, XMLNS_XSI
 from swift.common.middleware.s3api.s3response import InvalidArgument
 from swift.common.middleware.s3api.acl_utils import handle_acl_header
+from swift.common.utils import md5
 
 from test.unit.common.middleware.s3api import S3ApiTestCase
 from test.unit.common.middleware.s3api.helpers import UnreadableInput
@@ -133,7 +133,8 @@ class TestS3ApiAcl(S3ApiTestCase):
 
     def _test_put_no_body(self, use_content_length=False,
                           use_transfer_encoding=False, string_to_md5=b''):
-        content_md5 = base64.b64encode(md5(string_to_md5).digest()).strip()
+        content_md5 = base64.b64encode(
+            md5(string_to_md5, usedforsecurity=False).digest()).strip()
         with UnreadableInput(self) as fake_input:
             req = Request.blank(
                 '/bucket?acl',
diff --git a/test/unit/common/middleware/s3api/test_multi_delete.py b/test/unit/common/middleware/s3api/test_multi_delete.py
index 02ee5d32f..bcab0ac2f 100644
--- a/test/unit/common/middleware/s3api/test_multi_delete.py
+++ b/test/unit/common/middleware/s3api/test_multi_delete.py
@@ -17,7 +17,6 @@ import base64
 import json
 import unittest
 from datetime import datetime
-from hashlib import md5
 import mock
 
 from swift.common import swob
@@ -28,6 +27,7 @@ from test.unit.common.middleware.s3api import S3ApiTestCase
 from test.unit.common.middleware.s3api.helpers import UnreadableInput
 from swift.common.middleware.s3api.etree import fromstring, tostring, \
     Element, SubElement
+from swift.common.utils import md5
 from test.unit.common.middleware.s3api.test_s3_acl import s3acl
 
 
@@ -47,7 +47,8 @@ class TestS3ApiMultiDelete(S3ApiTestCase):
         obj = SubElement(elem, 'Object')
         SubElement(obj, 'Key').text = 'object'
         body = tostring(elem, use_s3ns=False)
-        content_md5 = base64.b64encode(md5(body).digest()).strip()
+        content_md5 = base64.b64encode(
+            md5(body, usedforsecurity=False).digest()).strip()
 
         req = Request.blank('/bucket/object?delete',
                             environ={'REQUEST_METHOD': 'POST'},
@@ -84,7 +85,8 @@ class TestS3ApiMultiDelete(S3ApiTestCase):
             obj = SubElement(elem, 'Object')
             SubElement(obj, 'Key').text = key
         body = tostring(elem, use_s3ns=False)
-        content_md5 = base64.b64encode(md5(body).digest()).strip()
+        content_md5 = base64.b64encode(
+            md5(body, usedforsecurity=False).digest()).strip()
 
         req = Request.blank('/bucket?delete',
                             environ={'REQUEST_METHOD': 'POST'},
@@ -138,7 +140,8 @@ class TestS3ApiMultiDelete(S3ApiTestCase):
             obj = SubElement(elem, 'Object')
             SubElement(obj, 'Key').text = key
         body = tostring(elem, use_s3ns=False)
-        content_md5 = base64.b64encode(md5(body).digest()).strip()
+        content_md5 = base64.b64encode(
+            md5(body, usedforsecurity=False).digest()).strip()
 
         req = Request.blank('/bucket?delete',
                             environ={'REQUEST_METHOD': 'POST'},
@@ -186,7 +189,8 @@ class TestS3ApiMultiDelete(S3ApiTestCase):
             obj = SubElement(elem, 'Object')
             SubElement(obj, 'Key').text = key
         body = tostring(elem, use_s3ns=False)
-        content_md5 = base64.b64encode(md5(body).digest()).strip()
+        content_md5 = base64.b64encode(
+            md5(body, usedforsecurity=False).digest()).strip()
 
         req = Request.blank('/bucket?delete',
                             environ={'REQUEST_METHOD': 'POST'},
@@ -213,7 +217,8 @@ class TestS3ApiMultiDelete(S3ApiTestCase):
             obj = SubElement(elem, 'Object')
             SubElement(obj, 'Key')
         body = tostring(elem, use_s3ns=False)
-        content_md5 = base64.b64encode(md5(body).digest()).strip()
+        content_md5 = base64.b64encode(
+            md5(body, usedforsecurity=False).digest()).strip()
 
         req = Request.blank('/bucket?delete',
                             environ={'REQUEST_METHOD': 'POST'},
@@ -262,7 +267,8 @@ class TestS3ApiMultiDelete(S3ApiTestCase):
             if version:
                 SubElement(obj, 'VersionId').text = version
         body = tostring(elem, use_s3ns=False)
-        content_md5 = base64.b64encode(md5(body).digest()).strip()
+        content_md5 = base64.b64encode(
+            md5(body, usedforsecurity=False).digest()).strip()
 
         req = Request.blank('/bucket?delete',
                             environ={'REQUEST_METHOD': 'POST'},
@@ -319,7 +325,8 @@ class TestS3ApiMultiDelete(S3ApiTestCase):
             if ts:
                 SubElement(obj, 'VersionId').text = ts.normal
         body = tostring(elem, use_s3ns=False)
-        content_md5 = base64.b64encode(md5(body).digest()).strip()
+        content_md5 = base64.b64encode(
+            md5(body, usedforsecurity=False).digest()).strip()
 
         req = Request.blank('/bucket?delete',
                             environ={'REQUEST_METHOD': 'POST'},
@@ -392,7 +399,8 @@ class TestS3ApiMultiDelete(S3ApiTestCase):
             obj = SubElement(elem, 'Object')
             SubElement(obj, 'Key').text = name
         body = tostring(elem, use_s3ns=False)
-        content_md5 = base64.b64encode(md5(body).digest()).strip()
+        content_md5 = (base64.b64encode(
+            md5(body, usedforsecurity=False).digest()).strip())
 
         req = Request.blank('/bucket?delete',
                             environ={'REQUEST_METHOD': 'POST'},
@@ -414,7 +422,8 @@ class TestS3ApiMultiDelete(S3ApiTestCase):
             obj = SubElement(elem, 'Object')
             SubElement(obj, 'Key').text = 'x' * 1000 + str(i)
         body = tostring(elem, use_s3ns=False)
-        content_md5 = base64.b64encode(md5(body).digest()).strip()
+        content_md5 = (base64.b64encode(
+            md5(body, usedforsecurity=False).digest()).strip())
 
         req = Request.blank('/bucket?delete',
                             environ={'REQUEST_METHOD': 'POST'},
@@ -435,7 +444,8 @@ class TestS3ApiMultiDelete(S3ApiTestCase):
         obj = SubElement(elem, 'Object')
         SubElement(obj, 'Key').text = 'Key1'
         body = tostring(elem, use_s3ns=False)
-        content_md5 = base64.b64encode(md5(body).digest()).strip()
+        content_md5 = (base64.b64encode(
+            md5(body, usedforsecurity=False).digest()).strip())
 
         req = Request.blank('/bucket?delete',
                             environ={'REQUEST_METHOD': 'POST'},
@@ -460,7 +470,9 @@ class TestS3ApiMultiDelete(S3ApiTestCase):
             obj = SubElement(elem, 'Object')
             SubElement(obj, 'Key').text = key
         body = tostring(elem, use_s3ns=False)
-        content_md5 = base64.b64encode(md5(body).digest()).strip()
+        content_md5 = (
+            base64.b64encode(md5(body, usedforsecurity=False).digest())
+            .strip())
 
         req = Request.blank('/bucket?delete',
                             environ={'REQUEST_METHOD': 'POST'},
@@ -502,7 +514,9 @@ class TestS3ApiMultiDelete(S3ApiTestCase):
 
     def _test_no_body(self, use_content_length=False,
                       use_transfer_encoding=False, string_to_md5=b''):
-        content_md5 = base64.b64encode(md5(string_to_md5).digest()).strip()
+        content_md5 = (base64.b64encode(
+            md5(string_to_md5, usedforsecurity=False).digest())
+            .strip())
         with UnreadableInput(self) as fake_input:
             req = Request.blank(
                 '/bucket?delete',
diff --git a/test/unit/common/middleware/s3api/test_multi_upload.py b/test/unit/common/middleware/s3api/test_multi_upload.py
index 3a0dc4c1e..78c1b982e 100644
--- a/test/unit/common/middleware/s3api/test_multi_upload.py
+++ b/test/unit/common/middleware/s3api/test_multi_upload.py
@@ -15,7 +15,6 @@
 
 import base64
 import binascii
-import hashlib
 from mock import patch
 import os
 import time
@@ -24,7 +23,7 @@ from six.moves.urllib.parse import quote, quote_plus
 
 from swift.common import swob
 from swift.common.swob import Request
-from swift.common.utils import json
+from swift.common.utils import json, md5
 
 from test.unit import FakeMemcache, patch_policies
 from test.unit.common.middleware.s3api import S3ApiTestCase
@@ -70,9 +69,9 @@ MULTIPARTS_TEMPLATE = \
      ('subdir/object/Z/2', '2014-05-07T19:47:58.592270', 'fedcba9876543210',
       41))
 
-S3_ETAG = '"%s-2"' % hashlib.md5(binascii.a2b_hex(
+S3_ETAG = '"%s-2"' % md5(binascii.a2b_hex(
     '0123456789abcdef0123456789abcdef'
-    'fedcba9876543210fedcba9876543210')).hexdigest()
+    'fedcba9876543210fedcba9876543210'), usedforsecurity=False).hexdigest()
 
 
 class TestS3ApiMultiUpload(S3ApiTestCase):
@@ -826,8 +825,8 @@ class TestS3ApiMultiUpload(S3ApiTestCase):
         self.assertEqual(self._get_error_code(body), 'NoSuchBucket')
 
     def test_object_multipart_upload_complete(self):
-        content_md5 = base64.b64encode(hashlib.md5(
-            XML.encode('ascii')).digest())
+        content_md5 = base64.b64encode(md5(
+            XML.encode('ascii'), usedforsecurity=False).digest())
         req = Request.blank('/bucket/object?uploadId=X',
                             environ={'REQUEST_METHOD': 'POST'},
                             headers={'Authorization': 'AWS test:tester:hmac',
@@ -863,8 +862,8 @@ class TestS3ApiMultiUpload(S3ApiTestCase):
         self.assertEqual(headers.get('X-Object-Sysmeta-S3Api-Upload-Id'), 'X')
 
     def test_object_multipart_upload_retry_complete(self):
-        content_md5 = base64.b64encode(hashlib.md5(
-            XML.encode('ascii')).digest())
+        content_md5 = base64.b64encode(md5(
+            XML.encode('ascii'), usedforsecurity=False).digest())
         self.swift.register('HEAD', '/v1/AUTH_test/bucket+segments/object/X',
                             swob.HTTPNotFound, {}, None)
         recent_ts = S3Timestamp.now(delta=-1000000).internal  # 10s ago
@@ -899,8 +898,8 @@ class TestS3ApiMultiUpload(S3ApiTestCase):
         ])
 
     def test_object_multipart_upload_retry_complete_etag_mismatch(self):
-        content_md5 = base64.b64encode(hashlib.md5(
-            XML.encode('ascii')).digest())
+        content_md5 = base64.b64encode(md5(
+            XML.encode('ascii'), usedforsecurity=False).digest())
         self.swift.register('HEAD', '/v1/AUTH_test/bucket+segments/object/X',
                             swob.HTTPNotFound, {}, None)
         recent_ts = S3Timestamp.now(delta=-1000000).internal
@@ -948,8 +947,8 @@ class TestS3ApiMultiUpload(S3ApiTestCase):
         self.assertEqual(headers.get('X-Object-Sysmeta-S3Api-Upload-Id'), 'X')
 
     def test_object_multipart_upload_retry_complete_upload_id_mismatch(self):
-        content_md5 = base64.b64encode(hashlib.md5(
-            XML.encode('ascii')).digest())
+        content_md5 = base64.b64encode(md5(
+            XML.encode('ascii'), usedforsecurity=False).digest())
         self.swift.register('HEAD', '/v1/AUTH_test/bucket+segments/object/X',
                             swob.HTTPNotFound, {}, None)
         recent_ts = S3Timestamp.now(delta=-1000000).internal
@@ -982,8 +981,9 @@ class TestS3ApiMultiUpload(S3ApiTestCase):
         ])
 
     def test_object_multipart_upload_invalid_md5(self):
-        bad_md5 = base64.b64encode(hashlib.md5(
-            XML.encode('ascii') + b'some junk').digest())
+        bad_md5 = base64.b64encode(md5(
+            XML.encode('ascii') + b'some junk', usedforsecurity=False)
+            .digest())
         req = Request.blank('/bucket/object?uploadId=X',
                             environ={'REQUEST_METHOD': 'POST'},
                             headers={'Authorization': 'AWS test:tester:hmac',
@@ -1413,8 +1413,9 @@ class TestS3ApiMultiUpload(S3ApiTestCase):
         self.assertEqual(status.split()[0], '200')
         elem = fromstring(body, 'CompleteMultipartUploadResult')
         self.assertNotIn('Etag', headers)
-        expected_etag = '"%s-3"' % hashlib.md5(binascii.unhexlify(''.join(
-            x['hash'] for x in object_list))).hexdigest()
+        expected_etag = ('"%s-3"' % md5(binascii.unhexlify(''.join(
+            x['hash'] for x in object_list)), usedforsecurity=False)
+            .hexdigest())
         self.assertEqual(elem.find('ETag').text, expected_etag)
 
         self.assertEqual(self.swift.calls, [
@@ -2217,7 +2218,7 @@ class TestS3ApiMultiUpload(S3ApiTestCase):
 
     def _test_no_body(self, use_content_length=False,
                       use_transfer_encoding=False, string_to_md5=b''):
-        raw_md5 = hashlib.md5(string_to_md5).digest()
+        raw_md5 = md5(string_to_md5, usedforsecurity=False).digest()
         content_md5 = base64.b64encode(raw_md5).strip()
         with UnreadableInput(self) as fake_input:
             req = Request.blank(
diff --git a/test/unit/common/middleware/s3api/test_obj.py b/test/unit/common/middleware/s3api/test_obj.py
index d9ff1f229..a85e44de3 100644
--- a/test/unit/common/middleware/s3api/test_obj.py
+++ b/test/unit/common/middleware/s3api/test_obj.py
@@ -16,7 +16,7 @@
 import binascii
 import unittest
 from datetime import datetime
-import hashlib
+from hashlib import sha256
 import os
 from os.path import join
 import time
@@ -36,6 +36,7 @@ from swift.common.middleware.s3api.etree import fromstring
 from swift.common.middleware.s3api.utils import mktime, S3Timestamp
 from swift.common.middleware.versioned_writes.object_versioning import \
     DELETE_MARKER_CONTENT_TYPE
+from swift.common.utils import md5
 
 
 class TestS3ApiObj(S3ApiTestCase):
@@ -44,7 +45,7 @@ class TestS3ApiObj(S3ApiTestCase):
         super(TestS3ApiObj, self).setUp()
 
         self.object_body = b'hello'
-        self.etag = hashlib.md5(self.object_body).hexdigest()
+        self.etag = md5(self.object_body, usedforsecurity=False).hexdigest()
         self.last_modified = 'Fri, 01 Apr 2014 12:00:00 GMT'
 
         self.response_headers = {'Content-Type': 'text/html',
@@ -643,7 +644,7 @@ class TestS3ApiObj(S3ApiTestCase):
 
     @s3acl
     def test_object_PUT_v4(self):
-        body_sha = hashlib.sha256(self.object_body).hexdigest()
+        body_sha = sha256(self.object_body).hexdigest()
         req = Request.blank(
             '/bucket/object',
             environ={'REQUEST_METHOD': 'PUT'},
diff --git a/test/unit/common/middleware/s3api/test_s3api.py b/test/unit/common/middleware/s3api/test_s3api.py
index 82c7ff100..e89c79117 100644
--- a/test/unit/common/middleware/s3api/test_s3api.py
+++ b/test/unit/common/middleware/s3api/test_s3api.py
@@ -18,7 +18,6 @@ import unittest
 from mock import patch, MagicMock
 import calendar
 from datetime import datetime
-import hashlib
 import mock
 import requests
 import json
@@ -29,6 +28,7 @@ import swift.common.middleware.s3api
 from swift.common.middleware.keystoneauth import KeystoneAuth
 from swift.common import swob, utils
 from swift.common.swob import Request
+from swift.common.utils import md5
 
 from keystonemiddleware.auth_token import AuthProtocol
 from keystoneauth1.access import AccessInfoV2
@@ -177,7 +177,7 @@ class TestS3ApiMiddleware(S3ApiTestCase):
 
         def verify(hash, path, headers):
             s = canonical_string(path, headers)
-            self.assertEqual(hash, hashlib.md5(s).hexdigest())
+            self.assertEqual(hash, md5(s, usedforsecurity=False).hexdigest())
 
         verify('6dd08c75e42190a1ce9468d1fd2eb787', '/bucket/object',
                {'Content-Type': 'text/plain', 'X-Amz-Something': 'test',
@@ -563,7 +563,7 @@ class TestS3ApiMiddleware(S3ApiTestCase):
         self.assertEqual(self._get_error_code(body), 'InvalidDigest')
 
     def test_object_create_bad_md5_too_short(self):
-        too_short_digest = hashlib.md5(b'hey').digest()[:-1]
+        too_short_digest = md5(b'hey', usedforsecurity=False).digest()[:-1]
         md5_str = base64.b64encode(too_short_digest).strip()
         if not six.PY2:
             md5_str = md5_str.decode('ascii')
@@ -577,7 +577,8 @@ class TestS3ApiMiddleware(S3ApiTestCase):
         self.assertEqual(self._get_error_code(body), 'InvalidDigest')
 
     def test_object_create_bad_md5_too_long(self):
-        too_long_digest = hashlib.md5(b'hey').digest() + b'suffix'
+        too_long_digest = md5(
+            b'hey', usedforsecurity=False).digest() + b'suffix'
         md5_str = base64.b64encode(too_long_digest).strip()
         if not six.PY2:
             md5_str = md5_str.decode('ascii')
diff --git a/test/unit/common/middleware/s3api/test_s3request.py b/test/unit/common/middleware/s3api/test_s3request.py
index 853ff1a8f..bad3a9ede 100644
--- a/test/unit/common/middleware/s3api/test_s3request.py
+++ b/test/unit/common/middleware/s3api/test_s3request.py
@@ -32,6 +32,7 @@ from swift.common.middleware.s3api.s3request import S3Request, \
 from swift.common.middleware.s3api.s3response import InvalidArgument, \
     NoSuchBucket, InternalError, \
     AccessDenied, SignatureDoesNotMatch, RequestTimeTooSkewed
+from swift.common.utils import md5, md5_factory
 
 from test.unit import DebugLogger
 
@@ -823,8 +824,9 @@ class TestRequest(S3ApiTestCase):
 class TestHashingInput(S3ApiTestCase):
     def test_good(self):
         raw = b'123456789'
-        wrapped = HashingInput(BytesIO(raw), 9, hashlib.md5,
-                               hashlib.md5(raw).hexdigest())
+        wrapped = HashingInput(
+            BytesIO(raw), 9, md5_factory,
+            md5(raw, usedforsecurity=False).hexdigest())
         self.assertEqual(b'1234', wrapped.read(4))
         self.assertEqual(b'56', wrapped.read(2))
         # trying to read past the end gets us whatever's left
@@ -848,8 +850,9 @@ class TestHashingInput(S3ApiTestCase):
 
     def test_too_long(self):
         raw = b'123456789'
-        wrapped = HashingInput(BytesIO(raw), 8, hashlib.md5,
-                               hashlib.md5(raw).hexdigest())
+        wrapped = HashingInput(
+            BytesIO(raw), 8, md5_factory,
+            md5(raw, usedforsecurity=False).hexdigest())
         self.assertEqual(b'1234', wrapped.read(4))
         self.assertEqual(b'56', wrapped.read(2))
         # even though the hash matches, there was more data than we expected
@@ -861,8 +864,9 @@ class TestHashingInput(S3ApiTestCase):
 
     def test_too_short(self):
         raw = b'123456789'
-        wrapped = HashingInput(BytesIO(raw), 10, hashlib.md5,
-                               hashlib.md5(raw).hexdigest())
+        wrapped = HashingInput(
+            BytesIO(raw), 10, md5_factory,
+            md5(raw, usedforsecurity=False).hexdigest())
         self.assertEqual(b'1234', wrapped.read(4))
         self.assertEqual(b'56', wrapped.read(2))
         # even though the hash matches, there was more data than we expected
@@ -873,8 +877,9 @@ class TestHashingInput(S3ApiTestCase):
 
     def test_bad_hash(self):
         raw = b'123456789'
-        wrapped = HashingInput(BytesIO(raw), 9, hashlib.sha256,
-                               hashlib.md5(raw).hexdigest())
+        wrapped = HashingInput(
+            BytesIO(raw), 9, hashlib.sha256,
+            md5(raw, usedforsecurity=False).hexdigest())
         self.assertEqual(b'1234', wrapped.read(4))
         self.assertEqual(b'5678', wrapped.read(4))
         with self.assertRaises(swob.HTTPException) as raised:
diff --git a/test/unit/common/middleware/test_copy.py b/test/unit/common/middleware/test_copy.py
index e1e5317cd..09ca2527e 100644
--- a/test/unit/common/middleware/test_copy.py
+++ b/test/unit/common/middleware/test_copy.py
@@ -16,14 +16,13 @@
 
 import mock
 import unittest
-from hashlib import md5
 from six.moves import urllib
 
 from swift.common import swob
 from swift.common.middleware import copy
 from swift.common.storage_policy import POLICIES
 from swift.common.swob import Request, HTTPException
-from swift.common.utils import closing_if_possible
+from swift.common.utils import closing_if_possible, md5
 from test.unit import patch_policies, debug_logger, FakeRing
 from test.unit.common.middleware.helpers import FakeSwift
 from test.unit.proxy.controllers.test_obj import set_http_connect, \
@@ -1386,7 +1385,7 @@ class TestServerSideCopyMiddlewareWithEC(unittest.TestCase):
 
     def _test_invalid_ranges(self, method, real_body, segment_size, req_range):
         # make a request with range starts from more than real size.
-        body_etag = md5(real_body).hexdigest()
+        body_etag = md5(real_body, usedforsecurity=False).hexdigest()
         req = swob.Request.blank(
             '/v1/a/c/o', method=method,
             headers={'Destination': 'c1/o',
diff --git a/test/unit/common/middleware/test_dlo.py b/test/unit/common/middleware/test_dlo.py
index 276d88728..e48d2932d 100644
--- a/test/unit/common/middleware/test_dlo.py
+++ b/test/unit/common/middleware/test_dlo.py
@@ -14,7 +14,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import hashlib
 import json
 import mock
 import shutil
@@ -26,7 +25,7 @@ import unittest
 from swift.common import swob
 from swift.common.header_key_dict import HeaderKeyDict
 from swift.common.middleware import dlo
-from swift.common.utils import closing_if_possible
+from swift.common.utils import closing_if_possible, md5
 from test.unit.common.middleware.helpers import FakeSwift
 
 
@@ -36,7 +35,7 @@ LIMIT = 'swift.common.constraints.CONTAINER_LISTING_LIMIT'
 def md5hex(s):
     if not isinstance(s, bytes):
         s = s.encode('utf-8')
-    return hashlib.md5(s).hexdigest()
+    return md5(s, usedforsecurity=False).hexdigest()
 
 
 class DloTestCase(unittest.TestCase):
@@ -738,7 +737,8 @@ class TestDloGetManifest(DloTestCase):
         status, headers, body = self.call_dlo(req)
         headers = HeaderKeyDict(headers)
         self.assertEqual(headers["Etag"],
-                         '"' + hashlib.md5(b"abcdef").hexdigest() + '"')
+                         '"' + md5(b"abcdef",
+                                   usedforsecurity=False).hexdigest() + '"')
 
     def test_object_prefix_quoting(self):
         self.app.register(
diff --git a/test/unit/common/middleware/test_object_versioning.py b/test/unit/common/middleware/test_object_versioning.py
index 97a06f72f..691d93fbc 100644
--- a/test/unit/common/middleware/test_object_versioning.py
+++ b/test/unit/common/middleware/test_object_versioning.py
@@ -19,7 +19,6 @@ import os
 import time
 import mock
 import unittest
-from hashlib import md5
 import six
 from six.moves import urllib
 from swift.common import swob, utils
@@ -33,6 +32,7 @@ from swift.common.middleware.versioned_writes.object_versioning import \
     SYSMETA_VERSIONS_SYMLINK, DELETE_MARKER_CONTENT_TYPE
 from swift.common.request_helpers import get_reserved_name
 from swift.common.storage_policy import StoragePolicy
+from swift.common.utils import md5
 from swift.proxy.controllers.base import get_cache_key
 from test.unit import patch_policies, FakeMemcache, make_timestamp_iter
 from test.unit.common.middleware.helpers import FakeSwift
@@ -580,7 +580,8 @@ class ObjectVersioningTestCase(ObjectVersioningBaseTestCase):
             '/v1/a/c/o', method='PUT', body=put_body,
             headers={'Content-Type': 'text/plain',
                      'ETag': md5(
-                         put_body.encode('utf8')).hexdigest(),
+                         put_body.encode('utf8'),
+                         usedforsecurity=False).hexdigest(),
                      'Content-Length': len(put_body)},
             environ={'swift.cache': self.cache_version_on,
                      'swift.trans_id': 'fake_trans_id'})
@@ -607,7 +608,7 @@ class ObjectVersioningTestCase(ObjectVersioningBaseTestCase):
             TGT_OBJ_SYSMETA_SYMLINK_HDR:
             self.build_symlink_path('c', 'o', '9999998765.99999'),
             'x-object-sysmeta-symlink-target-etag': md5(
-                put_body.encode('utf8')).hexdigest(),
+                put_body.encode('utf8'), usedforsecurity=False).hexdigest(),
             'x-object-sysmeta-symlink-target-bytes': str(len(put_body)),
         }
         symlink_put_headers = self.app._calls[-1].headers
@@ -757,7 +758,9 @@ class ObjectVersioningTestCase(ObjectVersioningBaseTestCase):
         req = Request.blank(
             '/v1/a/c/o', method='PUT', body=put_body,
             headers={'Content-Type': 'text/plain',
-                     'ETag': md5(put_body.encode('utf8')).hexdigest(),
+                     'ETag': md5(
+                         put_body.encode('utf8'),
+                         usedforsecurity=False).hexdigest(),
                      'Content-Length': len(put_body)},
             environ={'swift.cache': self.cache_version_on,
                      'swift.trans_id': 'fake_trans_id'})
@@ -784,7 +787,7 @@ class ObjectVersioningTestCase(ObjectVersioningBaseTestCase):
             TGT_OBJ_SYSMETA_SYMLINK_HDR:
             self.build_symlink_path('c', 'o', '9999998765.99999'),
             'x-object-sysmeta-symlink-target-etag': md5(
-                put_body.encode('utf8')).hexdigest(),
+                put_body.encode('utf8'), usedforsecurity=False).hexdigest(),
             'x-object-sysmeta-symlink-target-bytes': str(len(put_body)),
         }
         symlink_put_headers = self.app._calls[-1].headers
@@ -842,7 +845,7 @@ class ObjectVersioningTestCase(ObjectVersioningBaseTestCase):
             TGT_OBJ_SYSMETA_SYMLINK_HDR:
             self.build_symlink_path('c', 'o', '9999998765.99999'),
             'x-object-sysmeta-symlink-target-etag': md5(
-                put_body.encode('utf8')).hexdigest(),
+                put_body.encode('utf8'), usedforsecurity=False).hexdigest(),
             'x-object-sysmeta-symlink-target-bytes': str(len(put_body)),
         }
         for k, v in expected_headers.items():
@@ -904,7 +907,7 @@ class ObjectVersioningTestCase(ObjectVersioningBaseTestCase):
             TGT_OBJ_SYSMETA_SYMLINK_HDR:
             self.build_symlink_path('c', 'o', '9999998765.99999'),
             'x-object-sysmeta-symlink-target-etag': md5(
-                put_body.encode('utf8')).hexdigest(),
+                put_body.encode('utf8'), usedforsecurity=False).hexdigest(),
             'x-object-sysmeta-symlink-target-bytes': str(len(put_body)),
         }
         for k, v in expected_headers.items():
@@ -984,7 +987,7 @@ class ObjectVersioningTestCase(ObjectVersioningBaseTestCase):
             TGT_OBJ_SYSMETA_SYMLINK_HDR:
             self.build_symlink_path('c', 'o', '9999998765.99999'),
             'x-object-sysmeta-symlink-target-etag': md5(
-                put_body.encode('utf8')).hexdigest(),
+                put_body.encode('utf8'), usedforsecurity=False).hexdigest(),
             'x-object-sysmeta-symlink-target-bytes': str(len(put_body)),
         }
         for k, v in expected_headers.items():
@@ -1013,7 +1016,8 @@ class ObjectVersioningTestCase(ObjectVersioningBaseTestCase):
             '/v1/a/c/o', method='PUT', body=put_body,
             headers={'Content-Type': 'text/plain',
                      'ETag': md5(
-                         put_body.encode('utf8')).hexdigest(),
+                         put_body.encode('utf8'),
+                         usedforsecurity=False).hexdigest(),
                      'Content-Length': len(put_body)},
             environ={'swift.cache': self.cache_version_on,
                      'swift.trans_id': 'fake_trans_id'})
@@ -1042,7 +1046,7 @@ class ObjectVersioningTestCase(ObjectVersioningBaseTestCase):
             TGT_OBJ_SYSMETA_SYMLINK_HDR:
             self.build_symlink_path('c', 'o', '9999998765.99999'),
             'x-object-sysmeta-symlink-target-etag': md5(
-                put_body.encode('utf8')).hexdigest(),
+                put_body.encode('utf8'), usedforsecurity=False).hexdigest(),
             'x-object-sysmeta-symlink-target-bytes': str(len(put_body)),
         }
         symlink_put_headers = self.app._calls[-1].headers
@@ -1196,7 +1200,9 @@ class ObjectVersioningTestDisabled(ObjectVersioningBaseTestCase):
         req = Request.blank(
             '/v1/a/c/o', method='PUT', body=put_body,
             headers={'Content-Type': 'text/plain',
-                     'ETag': md5(put_body.encode('utf8')).hexdigest(),
+                     'ETag': md5(
+                         put_body.encode('utf8'),
+                         usedforsecurity=False).hexdigest(),
                      'Content-Length': len(put_body)},
             environ={'swift.cache': self.cache_version_off,
                      'swift.trans_id': 'fake_trans_id'})
@@ -1283,7 +1289,9 @@ class ObjectVersioningTestDisabled(ObjectVersioningBaseTestCase):
         req = Request.blank(
             '/v1/a/c/o', method='PUT', body=put_body,
             headers={'Content-Type': 'text/plain',
-                     'ETag': md5(put_body.encode('utf8')).hexdigest(),
+                     'ETag': md5(
+                         put_body.encode('utf8'),
+                         usedforsecurity=False).hexdigest(),
                      'Content-Length': len(put_body)},
             environ={'swift.cache': self.cache_version_off,
                      'swift.trans_id': 'fake_trans_id'})
@@ -1580,7 +1588,7 @@ class ObjectVersioningTestCopy(ObjectVersioningBaseTestCase):
             TGT_OBJ_SYSMETA_SYMLINK_HDR:
             self.build_symlink_path('c', 'o', '9999998765.99999'),
             'x-object-sysmeta-symlink-target-etag': md5(
-                src_body.encode('utf8')).hexdigest(),
+                src_body.encode('utf8'), usedforsecurity=False).hexdigest(),
             'x-object-sysmeta-symlink-target-bytes': str(len(src_body)),
         }
         symlink_put_headers = self.app._calls[-1].headers
@@ -1633,7 +1641,7 @@ class ObjectVersioningTestCopy(ObjectVersioningBaseTestCase):
             TGT_OBJ_SYSMETA_SYMLINK_HDR:
             self.build_symlink_path('c', 'o', '9999998765.99999'),
             'x-object-sysmeta-symlink-target-etag': md5(
-                src_body.encode('utf8')).hexdigest(),
+                src_body.encode('utf8'), usedforsecurity=False).hexdigest(),
             'x-object-sysmeta-symlink-target-bytes': str(len(src_body)),
         }
         symlink_put_headers = self.app._calls[-1].headers
@@ -1680,7 +1688,7 @@ class ObjectVersioningTestCopy(ObjectVersioningBaseTestCase):
             TGT_OBJ_SYSMETA_SYMLINK_HDR:
             self.build_symlink_path('c', 'o', '9999998765.99999'),
             'x-object-sysmeta-symlink-target-etag': md5(
-                src_body.encode('utf8')).hexdigest(),
+                src_body.encode('utf8'), usedforsecurity=False).hexdigest(),
             'x-object-sysmeta-symlink-target-bytes': str(len(src_body)),
         }
         symlink_put_headers = self.app._calls[-1].headers
@@ -1730,7 +1738,7 @@ class ObjectVersioningTestCopy(ObjectVersioningBaseTestCase):
             TGT_OBJ_SYSMETA_SYMLINK_HDR:
             self.build_symlink_path('c', 'o', '9999998765.99999'),
             'x-object-sysmeta-symlink-target-etag': md5(
-                src_body.encode('utf8')).hexdigest(),
+                src_body.encode('utf8'), usedforsecurity=False).hexdigest(),
             'x-object-sysmeta-symlink-target-bytes': str(len(src_body)),
         }
         symlink_put_headers = self.app._calls[-1].headers
@@ -1792,7 +1800,7 @@ class ObjectVersioningTestVersionAPI(ObjectVersioningBaseTestCase):
         timestamp = next(self.ts)
         version_path = '%s?symlink=get' % self.build_versions_path(
             obj='o', version=(~timestamp).normal)
-        etag = md5(b'old-version-etag').hexdigest()
+        etag = md5(b'old-version-etag', usedforsecurity=False).hexdigest()
         self.app.register('HEAD', version_path, swob.HTTPNoContent, {
             'Content-Length': 10,
             'Content-Type': 'application/old-version',
@@ -2128,7 +2136,7 @@ class ObjectVersioningVersionAPIWhileDisabled(ObjectVersioningBaseTestCase):
         timestamp = next(self.ts)
         version_path = '%s?symlink=get' % self.build_versions_path(
             obj='o', version=(~timestamp).normal)
-        etag = md5(b'old-version-etag').hexdigest()
+        etag = md5(b'old-version-etag', usedforsecurity=False).hexdigest()
         self.app.register('HEAD', version_path, swob.HTTPNoContent, {
             'Content-Length': 10,
             'Content-Type': 'application/old-version',
diff --git a/test/unit/common/middleware/test_slo.py b/test/unit/common/middleware/test_slo.py
index dd6ad4812..d02c75585 100644
--- a/test/unit/common/middleware/test_slo.py
+++ b/test/unit/common/middleware/test_slo.py
@@ -15,7 +15,6 @@
 # limitations under the License.
 
 import base64
-import hashlib
 import json
 import time
 import unittest
@@ -32,7 +31,7 @@ from swift.common.swob import Request, HTTPException, str_to_wsgi, \
     bytes_to_wsgi
 from swift.common.utils import quote, closing_if_possible, close_if_possible, \
     parse_content_type, iter_multipart_mime_documents, parse_mime_headers, \
-    Timestamp, get_expirer_container
+    Timestamp, get_expirer_container, md5
 from test.unit.common.middleware.helpers import FakeSwift
 
 
@@ -57,7 +56,7 @@ def fake_start_response(*args, **kwargs):
 def md5hex(s):
     if not isinstance(s, bytes):
         s = s.encode('ascii')
-    return hashlib.md5(s).hexdigest()
+    return md5(s, usedforsecurity=False).hexdigest()
 
 
 class SloTestCase(unittest.TestCase):
@@ -3004,7 +3003,7 @@ class TestSloGetManifest(SloTestCase):
 
     def test_get_segment_with_non_ascii_path(self):
         segment_body = u"a møøse once bit my sister".encode("utf-8")
-        segment_etag = hashlib.md5(segment_body).hexdigest()
+        segment_etag = md5(segment_body, usedforsecurity=False).hexdigest()
         if six.PY2:
             path = u'/v1/AUTH_test/ünicode/öbject-segment'.encode('utf-8')
         else:
diff --git a/test/unit/common/ring/test_ring.py b/test/unit/common/ring/test_ring.py
index 8ebe0f943..feffc4a6b 100644
--- a/test/unit/common/ring/test_ring.py
+++ b/test/unit/common/ring/test_ring.py
@@ -16,7 +16,6 @@
 import array
 import collections
 import six.moves.cPickle as pickle
-import hashlib
 import os
 import unittest
 import stat
@@ -30,9 +29,9 @@ import copy
 import mock
 
 from six.moves import range
-
 from swift.common import ring, utils
 from swift.common.ring import utils as ring_utils
+from swift.common.utils import md5
 
 
 class TestRingBase(unittest.TestCase):
@@ -236,7 +235,7 @@ class TestRing(TestRingBase):
         self.assertIsNone(self.ring.version)
 
         with open(self.testgz, 'rb') as fp:
-            expected_md5 = hashlib.md5()
+            expected_md5 = md5(usedforsecurity=False)
             expected_size = 0
             for chunk in iter(lambda: fp.read(2 ** 16), b''):
                 expected_md5.update(chunk)
diff --git a/test/unit/common/test_direct_client.py b/test/unit/common/test_direct_client.py
index faf2887cf..870559598 100644
--- a/test/unit/common/test_direct_client.py
+++ b/test/unit/common/test_direct_client.py
@@ -18,7 +18,6 @@ import json
 import unittest
 import os
 from contextlib import contextmanager
-from hashlib import md5
 import time
 import pickle
 
@@ -29,7 +28,7 @@ from swift.common import direct_client
 from swift.common.direct_client import DirectClientException
 from swift.common.exceptions import ClientException
 from swift.common.header_key_dict import HeaderKeyDict
-from swift.common.utils import Timestamp, quote
+from swift.common.utils import Timestamp, quote, md5
 from swift.common.swob import RESPONSE_REASONS
 from swift.common.storage_policy import POLICIES
 from six.moves.http_client import HTTPException
@@ -81,7 +80,7 @@ class FakeConn(object):
 
     def send(self, data):
         if not self.etag:
-            self.etag = md5()
+            self.etag = md5(usedforsecurity=False)
         self.etag.update(data)
 
 
@@ -546,7 +545,9 @@ class TestDirectClient(unittest.TestCase):
             self.assertEqual(conn.req_headers['User-Agent'], 'my UA')
             self.assertTrue('x-timestamp' in conn.req_headers)
             self.assertEqual('bar', conn.req_headers.get('x-foo'))
-            self.assertEqual(md5(body).hexdigest(), conn.etag.hexdigest())
+            self.assertEqual(
+                md5(body, usedforsecurity=False).hexdigest(),
+                conn.etag.hexdigest())
         self.assertIsNone(rv)
 
     def test_direct_put_container_chunked(self):
@@ -568,8 +569,9 @@ class TestDirectClient(unittest.TestCase):
             self.assertEqual('bar', conn.req_headers.get('x-foo'))
             self.assertNotIn('Content-Length', conn.req_headers)
             expected_sent = b'%0x\r\n%s\r\n0\r\n\r\n' % (len(body), body)
-            self.assertEqual(md5(expected_sent).hexdigest(),
-                             conn.etag.hexdigest())
+            self.assertEqual(
+                md5(expected_sent, usedforsecurity=False).hexdigest(),
+                conn.etag.hexdigest())
         self.assertIsNone(rv)
 
     def test_direct_put_container_fail(self):
@@ -849,7 +851,9 @@ class TestDirectClient(unittest.TestCase):
             self.assertEqual(conn.port, self.node['port'])
             self.assertEqual(conn.method, 'PUT')
             self.assertEqual(conn.path, self.obj_path)
-        self.assertEqual(md5(b'123456').hexdigest(), resp)
+        self.assertEqual(
+            md5(b'123456', usedforsecurity=False).hexdigest(),
+            resp)
 
     def test_direct_put_object_fail(self):
         contents = io.BytesIO(b'123456')
@@ -876,7 +880,10 @@ class TestDirectClient(unittest.TestCase):
             self.assertEqual(conn.port, self.node['port'])
             self.assertEqual(conn.method, 'PUT')
             self.assertEqual(conn.path, self.obj_path)
-        self.assertEqual(md5(b'6\r\n123456\r\n0\r\n\r\n').hexdigest(), resp)
+        self.assertEqual(
+            md5(b'6\r\n123456\r\n0\r\n\r\n',
+                usedforsecurity=False).hexdigest(),
+            resp)
 
     def test_direct_put_object_args(self):
         # One test to cover all missing checks
@@ -891,7 +898,9 @@ class TestDirectClient(unittest.TestCase):
             self.assertEqual(self.obj_path, conn.path)
             self.assertEqual(conn.req_headers['Content-Length'], '0')
             self.assertEqual(conn.req_headers['Content-Type'], 'Text')
-        self.assertEqual(md5(b'0\r\n\r\n').hexdigest(), resp)
+        self.assertEqual(
+            md5(b'0\r\n\r\n', usedforsecurity=False).hexdigest(),
+            resp)
 
     def test_direct_put_object_header_content_length(self):
         contents = io.BytesIO(b'123456')
@@ -906,7 +915,9 @@ class TestDirectClient(unittest.TestCase):
             self.assertEqual(conn.port, self.node['port'])
             self.assertEqual('PUT', conn.method)
             self.assertEqual(conn.req_headers['Content-length'], '6')
-        self.assertEqual(md5(b'123456').hexdigest(), resp)
+        self.assertEqual(
+            md5(b'123456', usedforsecurity=False).hexdigest(),
+            resp)
 
     def test_retry(self):
         headers = HeaderKeyDict({'key': 'value'})
diff --git a/test/unit/common/test_memcached.py b/test/unit/common/test_memcached.py
index 7ae9e6306..61f9bf062 100644
--- a/test/unit/common/test_memcached.py
+++ b/test/unit/common/test_memcached.py
@@ -18,7 +18,6 @@
 
 from collections import defaultdict
 import errno
-from hashlib import md5
 import io
 import logging
 import six
@@ -34,6 +33,7 @@ from eventlet import GreenPool, sleep, Queue
 from eventlet.pools import Pool
 
 from swift.common import memcached
+from swift.common.utils import md5
 from mock import patch, MagicMock
 from test.unit import debug_logger
 
@@ -337,7 +337,8 @@ class TestMemcached(unittest.TestCase):
         mock = MockMemcached()
         memcache_client._client_cache['1.2.3.4:11211'] = MockedMemcachePool(
             [(mock, mock)] * 2)
-        cache_key = md5(b'some_key').hexdigest().encode('ascii')
+        cache_key = md5(b'some_key',
+                        usedforsecurity=False).hexdigest().encode('ascii')
 
         memcache_client.set('some_key', [1, 2, 3])
         self.assertEqual(memcache_client.get('some_key'), [1, 2, 3])
@@ -443,7 +444,8 @@ class TestMemcached(unittest.TestCase):
         mock = MockMemcached()
         memcache_client._client_cache['1.2.3.4:11211'] = MockedMemcachePool(
             [(mock, mock)] * 2)
-        cache_key = md5(b'some_key').hexdigest().encode('ascii')
+        cache_key = md5(b'some_key',
+                        usedforsecurity=False).hexdigest().encode('ascii')
 
         memcache_client.incr('some_key', delta=5, time=55)
         self.assertEqual(memcache_client.get('some_key'), b'5')
@@ -653,7 +655,7 @@ class TestMemcached(unittest.TestCase):
             memcache_client.get_multi(('some_key2', 'some_key1'), 'multi_key'),
             [[4, 5, 6], [1, 2, 3]])
         for key in (b'some_key1', b'some_key2'):
-            key = md5(key).hexdigest().encode('ascii')
+            key = md5(key, usedforsecurity=False).hexdigest().encode('ascii')
             self.assertIn(key, mock.cache)
             _junk, cache_timeout, _junk = mock.cache[key]
             self.assertEqual(cache_timeout, b'0')
@@ -662,7 +664,7 @@ class TestMemcached(unittest.TestCase):
             {'some_key1': [1, 2, 3], 'some_key2': [4, 5, 6]}, 'multi_key',
             time=20)
         for key in (b'some_key1', b'some_key2'):
-            key = md5(key).hexdigest().encode('ascii')
+            key = md5(key, usedforsecurity=False).hexdigest().encode('ascii')
             _junk, cache_timeout, _junk = mock.cache[key]
             self.assertEqual(cache_timeout, b'20')
 
@@ -672,7 +674,7 @@ class TestMemcached(unittest.TestCase):
             {'some_key1': [1, 2, 3], 'some_key2': [4, 5, 6]}, 'multi_key',
             time=fortydays)
         for key in (b'some_key1', b'some_key2'):
-            key = md5(key).hexdigest().encode('ascii')
+            key = md5(key, usedforsecurity=False).hexdigest().encode('ascii')
             _junk, cache_timeout, _junk = mock.cache[key]
             self.assertAlmostEqual(float(cache_timeout), esttimeout, delta=1)
         self.assertEqual(memcache_client.get_multi(
@@ -709,14 +711,15 @@ class TestMemcached(unittest.TestCase):
             memcache_client.get_multi(('some_key1', 'some_key0'), 'multi_key'),
             [[4, 5, 6], [1, 2, 3]])
         for key in (b'some_key0', b'some_key1'):
-            key = md5(key).hexdigest().encode('ascii')
+            key = md5(key, usedforsecurity=False).hexdigest().encode('ascii')
             self.assertIn(key, mock1.cache)
             _junk, cache_timeout, _junk = mock1.cache[key]
             self.assertEqual(cache_timeout, b'0')
 
         memcache_client.set('some_key0', [7, 8, 9])
         self.assertEqual(memcache_client.get('some_key0'), [7, 8, 9])
-        key = md5(b'some_key0').hexdigest().encode('ascii')
+        key = md5(b'some_key0',
+                  usedforsecurity=False).hexdigest().encode('ascii')
         self.assertIn(key, mock2.cache)
 
         # Delete 'some_key0' with server_key='multi_key'
diff --git a/test/unit/common/test_utils.py b/test/unit/common/test_utils.py
index 69976438d..dfdefd1d8 100644
--- a/test/unit/common/test_utils.py
+++ b/test/unit/common/test_utils.py
@@ -74,7 +74,7 @@ from swift.common.exceptions import Timeout, MessageTimeout, \
     MimeInvalid
 from swift.common import utils
 from swift.common.utils import is_valid_ip, is_valid_ipv4, is_valid_ipv6, \
-    set_swift_dir
+    set_swift_dir, md5
 from swift.common.container_sync_realms import ContainerSyncRealms
 from swift.common.header_key_dict import HeaderKeyDict
 from swift.common.storage_policy import POLICIES, reload_storage_policies
@@ -1024,6 +1024,13 @@ class TestUtils(unittest.TestCase):
     def setUp(self):
         utils.HASH_PATH_SUFFIX = b'endcap'
         utils.HASH_PATH_PREFIX = b'startcap'
+        self.md5_test_data = "Openstack forever".encode('utf-8')
+        try:
+            self.md5_digest = hashlib.md5(self.md5_test_data).hexdigest()
+            self.fips_enabled = False
+        except ValueError:
+            self.md5_digest = '0d6dc3c588ae71a04ce9a6beebbbba06'
+            self.fips_enabled = True
 
     def test_get_zero_indexed_base_string(self):
         self.assertEqual(utils.get_zero_indexed_base_string('something', 0),
@@ -4501,6 +4508,79 @@ cluster_dfw1 = http://dfw1.host/v1/
         self.assertEqual(msg, b'READY=1')
         self.assertNotIn('NOTIFY_SOCKET', os.environ)
 
+    def test_md5_with_data(self):
+        if not self.fips_enabled:
+            digest = md5(self.md5_test_data).hexdigest()
+            self.assertEqual(digest, self.md5_digest)
+        else:
+            # on a FIPS enabled system, this throws a ValueError:
+            # [digital envelope routines: EVP_DigestInit_ex] disabled for FIPS
+            self.assertRaises(ValueError, md5, self.md5_test_data)
+
+        if not self.fips_enabled:
+            digest = md5(self.md5_test_data, usedforsecurity=True).hexdigest()
+            self.assertEqual(digest, self.md5_digest)
+        else:
+            self.assertRaises(
+                ValueError, md5, self.md5_test_data, usedforsecurity=True)
+
+        digest = md5(self.md5_test_data, usedforsecurity=False).hexdigest()
+        self.assertEqual(digest, self.md5_digest)
+
+    def test_md5_without_data(self):
+        if not self.fips_enabled:
+            test_md5 = md5()
+            test_md5.update(self.md5_test_data)
+            digest = test_md5.hexdigest()
+            self.assertEqual(digest, self.md5_digest)
+        else:
+            self.assertRaises(ValueError, md5)
+
+        if not self.fips_enabled:
+            test_md5 = md5(usedforsecurity=True)
+            test_md5.update(self.md5_test_data)
+            digest = test_md5.hexdigest()
+            self.assertEqual(digest, self.md5_digest)
+        else:
+            self.assertRaises(ValueError, md5, usedforsecurity=True)
+
+        test_md5 = md5(usedforsecurity=False)
+        test_md5.update(self.md5_test_data)
+        digest = test_md5.hexdigest()
+        self.assertEqual(digest, self.md5_digest)
+
+    @unittest.skipIf(sys.version_info.major == 2,
+                     "hashlib.md5 does not raise TypeError here in py2")
+    def test_string_data_raises_type_error(self):
+        if not self.fips_enabled:
+            self.assertRaises(TypeError, hashlib.md5, u'foo')
+            self.assertRaises(TypeError, md5, u'foo')
+            self.assertRaises(
+                TypeError, md5, u'foo', usedforsecurity=True)
+        else:
+            self.assertRaises(ValueError, hashlib.md5, u'foo')
+            self.assertRaises(ValueError, md5, u'foo')
+            self.assertRaises(
+                ValueError, md5, u'foo', usedforsecurity=True)
+
+        self.assertRaises(
+            TypeError, md5, u'foo', usedforsecurity=False)
+
+    def test_none_data_raises_type_error(self):
+        if not self.fips_enabled:
+            self.assertRaises(TypeError, hashlib.md5, None)
+            self.assertRaises(TypeError, md5, None)
+            self.assertRaises(
+                TypeError, md5, None, usedforsecurity=True)
+        else:
+            self.assertRaises(ValueError, hashlib.md5, None)
+            self.assertRaises(ValueError, md5, None)
+            self.assertRaises(
+                ValueError, md5, None, usedforsecurity=True)
+
+        self.assertRaises(
+            TypeError, md5, None, usedforsecurity=False)
+
 
 class ResellerConfReader(unittest.TestCase):
 
@@ -8180,7 +8260,7 @@ class TestShardRange(unittest.TestCase):
     def test_make_path(self):
         ts = utils.Timestamp.now()
         actual = utils.ShardRange.make_path('a', 'root', 'parent', ts, 0)
-        parent_hash = hashlib.md5(b'parent').hexdigest()
+        parent_hash = md5(b'parent', usedforsecurity=False).hexdigest()
         self.assertEqual('a/root-%s-%s-0' % (parent_hash, ts.internal), actual)
         actual = utils.ShardRange.make_path('a', 'root', 'parent', ts, 3)
         self.assertEqual('a/root-%s-%s-3' % (parent_hash, ts.internal), actual)
diff --git a/test/unit/container/test_backend.py b/test/unit/container/test_backend.py
index 255510718..a76c276f3 100644
--- a/test/unit/container/test_backend.py
+++ b/test/unit/container/test_backend.py
@@ -17,7 +17,6 @@
 import base64
 import errno
 import os
-import hashlib
 import inspect
 import unittest
 from time import sleep, time
@@ -40,7 +39,7 @@ from swift.container.backend import ContainerBroker, \
 from swift.common.db import DatabaseAlreadyExists, GreenDBConnection
 from swift.common.request_helpers import get_reserved_name
 from swift.common.utils import Timestamp, encode_timestamps, hash_path, \
-    ShardRange, make_db_file_path
+    ShardRange, make_db_file_path, md5
 from swift.common.storage_policy import POLICIES
 
 import mock
@@ -3161,7 +3160,7 @@ class TestContainerBroker(unittest.TestCase):
         def md5_str(s):
             if not isinstance(s, bytes):
                 s = s.encode('utf8')
-            return hashlib.md5(s).hexdigest()
+            return md5(s, usedforsecurity=False).hexdigest()
 
         broker = ContainerBroker(':memory:', account='a', container='c')
         broker.initialize(Timestamp('1').internal, 0)
diff --git a/test/unit/container/test_sharder.py b/test/unit/container/test_sharder.py
index 359f23cae..8e93811cb 100644
--- a/test/unit/container/test_sharder.py
+++ b/test/unit/container/test_sharder.py
@@ -12,7 +12,6 @@
 # implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-import hashlib
 import json
 import random
 
@@ -42,7 +41,7 @@ from swift.container.sharder import ContainerSharder, sharding_enabled, \
     CleavingContext, DEFAULT_SHARD_SHRINK_POINT, \
     DEFAULT_SHARD_CONTAINER_THRESHOLD
 from swift.common.utils import ShardRange, Timestamp, hash_path, \
-    encode_timestamps, parse_db_filename, quorum_size, Everything
+    encode_timestamps, parse_db_filename, quorum_size, Everything, md5
 from test import annotate_failure
 
 from test.unit import debug_logger, FakeRing, \
@@ -65,7 +64,8 @@ class BaseTestSharder(unittest.TestCase):
 
     def _make_broker(self, account='a', container='c', epoch=None,
                      device='sda', part=0, hash_=None):
-        hash_ = hash_ or hashlib.md5(container.encode('utf-8')).hexdigest()
+        hash_ = hash_ or md5(
+            container.encode('utf-8'), usedforsecurity=False).hexdigest()
         datadir = os.path.join(
             self.tempdir, device, 'containers', str(part), hash_[-3:], hash_)
         if epoch:
diff --git a/test/unit/obj/common.py b/test/unit/obj/common.py
index a64013801..fd83427da 100644
--- a/test/unit/obj/common.py
+++ b/test/unit/obj/common.py
@@ -12,7 +12,6 @@
 # implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-import hashlib
 import os
 import shutil
 import tempfile
@@ -20,7 +19,7 @@ import unittest
 
 from swift.common import utils
 from swift.common.storage_policy import POLICIES
-from swift.common.utils import Timestamp
+from swift.common.utils import Timestamp, md5
 
 
 def write_diskfile(df, timestamp, data=b'test data', frag_index=None,
@@ -31,7 +30,7 @@ def write_diskfile(df, timestamp, data=b'test data', frag_index=None,
     with df.create() as writer:
         writer.write(data)
         metadata = {
-            'ETag': hashlib.md5(data).hexdigest(),
+            'ETag': md5(data, usedforsecurity=False).hexdigest(),
             'X-Timestamp': timestamp.internal,
             'Content-Length': str(len(data)),
         }
diff --git a/test/unit/obj/test_auditor.py b/test/unit/obj/test_auditor.py
index 71c56c468..2c7fe3dd9 100644
--- a/test/unit/obj/test_auditor.py
+++ b/test/unit/obj/test_auditor.py
@@ -23,7 +23,6 @@ import time
 import string
 import xattr
 from shutil import rmtree
-from hashlib import md5
 from tempfile import mkdtemp
 import textwrap
 from os.path import dirname, basename
@@ -35,7 +34,7 @@ from swift.obj.diskfile import (
     DiskFileManager, ECDiskFileManager, AuditLocation, clear_auditor_status,
     get_auditor_status, HASH_FILE, HASH_INVALIDATIONS_FILE)
 from swift.common.utils import (
-    mkdirs, normalize_timestamp, Timestamp, readconf)
+    mkdirs, normalize_timestamp, Timestamp, readconf, md5)
 from swift.common.storage_policy import (
     ECStoragePolicy, StoragePolicy, POLICIES, EC_POLICY)
 from test.unit.obj.common import write_diskfile
@@ -160,7 +159,7 @@ class TestAuditor(unittest.TestCase):
             data = b'0' * 1024
             if disk_file.policy.policy_type == EC_POLICY:
                 data = disk_file.policy.pyeclib_driver.encode(data)[0]
-            etag = md5()
+            etag = md5(usedforsecurity=False)
             with disk_file.create() as writer:
                 writer.write(data)
                 etag.update(data)
@@ -198,7 +197,7 @@ class TestAuditor(unittest.TestCase):
         # simulate a PUT
         now = time.time()
         data = b'boots and cats and ' * 1024
-        hasher = md5()
+        hasher = md5(usedforsecurity=False)
         with disk_file.create() as writer:
             writer.write(data)
             hasher.update(data)
@@ -257,14 +256,16 @@ class TestAuditor(unittest.TestCase):
             checksum = xattr.getxattr(
                 file_path, "user.swift.metadata_checksum")
 
-            self.assertEqual(checksum,
-                             md5(metadata).hexdigest().encode('ascii'))
+            self.assertEqual(
+                checksum,
+                (md5(metadata, usedforsecurity=False).hexdigest()
+                 .encode('ascii')))
 
     def test_object_audit_diff_data(self):
         auditor_worker = auditor.AuditorWorker(self.conf, self.logger,
                                                self.rcache, self.devices)
         data = b'0' * 1024
-        etag = md5()
+        etag = md5(usedforsecurity=False)
         timestamp = str(normalize_timestamp(time.time()))
         with self.disk_file.create() as writer:
             writer.write(data)
@@ -287,7 +288,7 @@ class TestAuditor(unittest.TestCase):
             AuditLocation(self.disk_file._datadir, 'sda', '0',
                           policy=POLICIES.legacy))
         self.assertEqual(auditor_worker.quarantines, pre_quarantines)
-        etag = md5(b'1' + b'0' * 1023).hexdigest()
+        etag = md5(b'1' + b'0' * 1023, usedforsecurity=False).hexdigest()
         metadata['ETag'] = etag
 
         with self.disk_file.create() as writer:
@@ -305,7 +306,7 @@ class TestAuditor(unittest.TestCase):
 
         def do_test(data):
             # create diskfile and set ETag and content-length to match the data
-            etag = md5(data).hexdigest()
+            etag = md5(data, usedforsecurity=False).hexdigest()
             timestamp = str(normalize_timestamp(time.time()))
             with disk_file.create() as writer:
                 writer.write(data)
@@ -515,7 +516,7 @@ class TestAuditor(unittest.TestCase):
                                  policy=self.disk_file.policy)
 
         data = b'VERIFY'
-        etag = md5()
+        etag = md5(usedforsecurity=False)
         timestamp = str(normalize_timestamp(time.time()))
         with self.disk_file.create() as writer:
             writer.write(data)
@@ -593,7 +594,7 @@ class TestAuditor(unittest.TestCase):
         timestamp = str(normalize_timestamp(time.time()))
         pre_errors = auditor_worker.errors
         data = b'0' * 1024
-        etag = md5()
+        etag = md5(usedforsecurity=False)
         with self.disk_file.create() as writer:
             writer.write(data)
             etag.update(data)
@@ -622,7 +623,7 @@ class TestAuditor(unittest.TestCase):
             with df.create() as writer:
                 writer.write(data)
                 metadata = {
-                    'ETag': md5(data).hexdigest(),
+                    'ETag': md5(data, usedforsecurity=False).hexdigest(),
                     'X-Timestamp': timestamp,
                     'Content-Length': str(os.fstat(writer._fd).st_size),
                 }
@@ -648,7 +649,7 @@ class TestAuditor(unittest.TestCase):
             with df.create() as writer:
                 writer.write(data)
                 metadata = {
-                    'ETag': md5(data).hexdigest(),
+                    'ETag': md5(data, usedforsecurity=False).hexdigest(),
                     'X-Timestamp': timestamp,
                     'Content-Length': str(os.fstat(writer._fd).st_size),
                 }
@@ -696,7 +697,7 @@ class TestAuditor(unittest.TestCase):
         with self.disk_file.create() as writer:
             writer.write(data)
             metadata = {
-                'ETag': md5(data).hexdigest(),
+                'ETag': md5(data, usedforsecurity=False).hexdigest(),
                 'X-Timestamp': ts.normal,
                 'Content-Length': str(os.fstat(writer._fd).st_size),
             }
@@ -768,7 +769,7 @@ class TestAuditor(unittest.TestCase):
         # pretend that we logged (and reset counters) just now
         auditor_worker.last_logged = time.time()
         data = b'0' * 1024
-        etag = md5()
+        etag = md5(usedforsecurity=False)
         with self.disk_file.create() as writer:
             writer.write(data)
             etag.update(data)
@@ -792,7 +793,7 @@ class TestAuditor(unittest.TestCase):
         timestamp = str(normalize_timestamp(time.time()))
         pre_quarantines = auditor_worker.quarantines
         data = b'0' * 10
-        etag = md5()
+        etag = md5(usedforsecurity=False)
         with self.disk_file.create() as writer:
             writer.write(data)
             etag.update(data)
@@ -808,7 +809,7 @@ class TestAuditor(unittest.TestCase):
         self.disk_file = self.df_mgr.get_diskfile('sda', '0', 'a', 'c', 'ob',
                                                   policy=POLICIES.legacy)
         data = b'1' * 10
-        etag = md5()
+        etag = md5(usedforsecurity=False)
         with self.disk_file.create() as writer:
             writer.write(data)
             etag.update(data)
@@ -828,7 +829,7 @@ class TestAuditor(unittest.TestCase):
         self.auditor = auditor.ObjectAuditor(self.conf)
         self.auditor.log_time = 0
         data = b'0' * 1024
-        etag = md5()
+        etag = md5(usedforsecurity=False)
         with self.disk_file.create() as writer:
             writer.write(data)
             etag.update(data)
@@ -841,7 +842,7 @@ class TestAuditor(unittest.TestCase):
             }
             writer.put(metadata)
             writer.commit(Timestamp(timestamp))
-            etag = md5()
+            etag = md5(usedforsecurity=False)
             etag.update(b'1' + b'0' * 1023)
             etag = etag.hexdigest()
             metadata['ETag'] = etag
@@ -863,7 +864,7 @@ class TestAuditor(unittest.TestCase):
             timestamp = Timestamp.now()
         self.auditor = auditor.ObjectAuditor(self.conf)
         self.auditor.log_time = 0
-        etag = md5()
+        etag = md5(usedforsecurity=False)
         with self.disk_file.create() as writer:
             etag = etag.hexdigest()
             metadata = {
@@ -873,7 +874,7 @@ class TestAuditor(unittest.TestCase):
             }
             writer.put(metadata)
             writer.commit(Timestamp(timestamp))
-            etag = md5()
+            etag = md5(usedforsecurity=False)
             etag = etag.hexdigest()
             metadata['ETag'] = etag
             write_metadata(writer._fd, metadata)
@@ -1424,7 +1425,7 @@ class TestAuditor(unittest.TestCase):
         ts = Timestamp(time.time())
         with self.disk_file.create() as writer:
             metadata = {
-                'ETag': md5(b'').hexdigest(),
+                'ETag': md5(b'', usedforsecurity=False).hexdigest(),
                 'X-Timestamp': ts.normal,
                 'Content-Length': str(os.fstat(writer._fd).st_size),
             }
diff --git a/test/unit/obj/test_diskfile.py b/test/unit/obj/test_diskfile.py
index 778a57893..a1d1c8c25 100644
--- a/test/unit/obj/test_diskfile.py
+++ b/test/unit/obj/test_diskfile.py
@@ -35,7 +35,6 @@ from random import shuffle, randint
 from shutil import rmtree
 from time import time
 from tempfile import mkdtemp
-from hashlib import md5 as _md5
 from contextlib import closing, contextmanager
 from gzip import GzipFile
 import pyeclib.ec_iface
@@ -50,7 +49,7 @@ from test.unit import (mock as unit_mock, temptree, mock_check_drive,
 from swift.obj import diskfile
 from swift.common import utils
 from swift.common.utils import hash_path, mkdirs, Timestamp, \
-    encode_timestamps, O_TMPFILE
+    encode_timestamps, O_TMPFILE, md5 as _md5
 from swift.common import ring
 from swift.common.splice import splice
 from swift.common.exceptions import DiskFileNotExist, DiskFileQuarantined, \
@@ -76,7 +75,7 @@ class md5(object):
     def __init__(self, s=b''):
         if not isinstance(s, bytes):
             s = s.encode('ascii')
-        self.md = _md5(s)
+        self.md = _md5(s, usedforsecurity=False)
 
     def update(self, s=b''):
         if not isinstance(s, bytes):
diff --git a/test/unit/obj/test_reconstructor.py b/test/unit/obj/test_reconstructor.py
index a350a7768..c9682395a 100644
--- a/test/unit/obj/test_reconstructor.py
+++ b/test/unit/obj/test_reconstructor.py
@@ -16,7 +16,6 @@ import itertools
 import json
 import unittest
 import os
-from hashlib import md5
 import mock
 import six
 import six.moves.cPickle as pickle
@@ -37,7 +36,7 @@ from six.moves.urllib.parse import unquote
 from swift.common import utils
 from swift.common.exceptions import DiskFileError
 from swift.common.header_key_dict import HeaderKeyDict
-from swift.common.utils import dump_recon_cache
+from swift.common.utils import dump_recon_cache, md5
 from swift.obj import diskfile, reconstructor as object_reconstructor
 from swift.common import ring
 from swift.common.storage_policy import (StoragePolicy, ECStoragePolicy,
@@ -4414,7 +4413,7 @@ class TestObjectReconstructor(BaseTestObjectReconstructor):
             metadata = {
                 'X-Timestamp': ts.internal,
                 'Content-Length': len(test_data),
-                'Etag': md5(test_data).hexdigest(),
+                'Etag': md5(test_data, usedforsecurity=False).hexdigest(),
                 'X-Object-Sysmeta-Ec-Frag-Index': frag_index,
             }
             writer.put(metadata)
@@ -4553,7 +4552,7 @@ class TestReconstructFragmentArchive(BaseTestObjectReconstructor):
         node['backend_index'] = self.policy.get_backend_index(node['index'])
 
         test_data = (b'rebuild' * self.policy.ec_segment_size)[:-777]
-        etag = md5(test_data).hexdigest()
+        etag = md5(test_data, usedforsecurity=False).hexdigest()
         ec_archive_bodies = encode_frag_archive_bodies(self.policy, test_data)
         broken_body = ec_archive_bodies.pop(1)
 
@@ -4583,8 +4582,8 @@ class TestReconstructFragmentArchive(BaseTestObjectReconstructor):
                 self.assertEqual(0, df.content_length)
                 fixed_body = b''.join(df.reader())
         self.assertEqual(len(fixed_body), len(broken_body))
-        self.assertEqual(md5(fixed_body).hexdigest(),
-                         md5(broken_body).hexdigest())
+        self.assertEqual(md5(fixed_body, usedforsecurity=False).hexdigest(),
+                         md5(broken_body, usedforsecurity=False).hexdigest())
         self.assertEqual(len(part_nodes) - 1, len(called_headers),
                          'Expected %d calls, got %r' % (len(part_nodes) - 1,
                                                         called_headers))
@@ -4617,7 +4616,7 @@ class TestReconstructFragmentArchive(BaseTestObjectReconstructor):
         node['backend_index'] = self.policy.get_backend_index(node['index'])
 
         test_data = (b'rebuild' * self.policy.ec_segment_size)[:-777]
-        etag = md5(test_data).hexdigest()
+        etag = md5(test_data, usedforsecurity=False).hexdigest()
         ec_archive_bodies = encode_frag_archive_bodies(self.policy, test_data)
 
         broken_body = ec_archive_bodies.pop(4)
@@ -4641,8 +4640,9 @@ class TestReconstructFragmentArchive(BaseTestObjectReconstructor):
                     job, node, dict(self.obj_metadata))
                 fixed_body = b''.join(df.reader())
                 self.assertEqual(len(fixed_body), len(broken_body))
-                self.assertEqual(md5(fixed_body).hexdigest(),
-                                 md5(broken_body).hexdigest())
+                self.assertEqual(
+                    md5(fixed_body, usedforsecurity=False).hexdigest(),
+                    md5(broken_body, usedforsecurity=False).hexdigest())
 
     def test_reconstruct_fa_error_with_invalid_header(self):
         job = {
@@ -4654,7 +4654,7 @@ class TestReconstructFragmentArchive(BaseTestObjectReconstructor):
         node['backend_index'] = self.policy.get_backend_index(node['index'])
 
         test_data = (b'rebuild' * self.policy.ec_segment_size)[:-777]
-        etag = md5(test_data).hexdigest()
+        etag = md5(test_data, usedforsecurity=False).hexdigest()
         ec_archive_bodies = encode_frag_archive_bodies(self.policy, test_data)
 
         broken_body = ec_archive_bodies.pop(4)
@@ -4687,8 +4687,9 @@ class TestReconstructFragmentArchive(BaseTestObjectReconstructor):
             fixed_body = b''.join(df.reader())
             # ... this bad response should be ignored like any other failure
             self.assertEqual(len(fixed_body), len(broken_body))
-            self.assertEqual(md5(fixed_body).hexdigest(),
-                             md5(broken_body).hexdigest())
+            self.assertEqual(
+                md5(fixed_body, usedforsecurity=False).hexdigest(),
+                md5(broken_body, usedforsecurity=False).hexdigest())
 
     def test_reconstruct_parity_fa_with_data_node_failure(self):
         job = {
@@ -4702,7 +4703,7 @@ class TestReconstructFragmentArchive(BaseTestObjectReconstructor):
         # make up some data (trim some amount to make it unaligned with
         # segment size)
         test_data = (b'rebuild' * self.policy.ec_segment_size)[:-454]
-        etag = md5(test_data).hexdigest()
+        etag = md5(test_data, usedforsecurity=False).hexdigest()
         ec_archive_bodies = encode_frag_archive_bodies(self.policy, test_data)
         # the scheme is 10+4, so this gets a parity node
         broken_body = ec_archive_bodies.pop(-4)
@@ -4724,8 +4725,9 @@ class TestReconstructFragmentArchive(BaseTestObjectReconstructor):
                     job, node, dict(self.obj_metadata))
                 fixed_body = b''.join(df.reader())
                 self.assertEqual(len(fixed_body), len(broken_body))
-                self.assertEqual(md5(fixed_body).hexdigest(),
-                                 md5(broken_body).hexdigest())
+                self.assertEqual(
+                    md5(fixed_body, usedforsecurity=False).hexdigest(),
+                    md5(broken_body, usedforsecurity=False).hexdigest())
 
     def test_reconstruct_fa_exceptions_fails(self):
         job = {
@@ -4792,7 +4794,7 @@ class TestReconstructFragmentArchive(BaseTestObjectReconstructor):
         node['backend_index'] = self.policy.get_backend_index(node['index'])
 
         test_data = (b'rebuild' * self.policy.ec_segment_size)[:-777]
-        etag = md5(test_data).hexdigest()
+        etag = md5(test_data, usedforsecurity=False).hexdigest()
         ec_archive_bodies = encode_frag_archive_bodies(self.policy, test_data)
 
         # bad response
@@ -4826,8 +4828,9 @@ class TestReconstructFragmentArchive(BaseTestObjectReconstructor):
                 job, node, self.obj_metadata)
             fixed_body = b''.join(df.reader())
             self.assertEqual(len(fixed_body), len(broken_body))
-            self.assertEqual(md5(fixed_body).hexdigest(),
-                             md5(broken_body).hexdigest())
+            self.assertEqual(
+                md5(fixed_body, usedforsecurity=False).hexdigest(),
+                md5(broken_body, usedforsecurity=False).hexdigest())
 
         # no error and warning
         self.assertFalse(self.logger.get_lines_for_level('error'))
@@ -4843,7 +4846,7 @@ class TestReconstructFragmentArchive(BaseTestObjectReconstructor):
         node['backend_index'] = self.policy.get_backend_index(node['index'])
 
         test_data = (b'rebuild' * self.policy.ec_segment_size)[:-777]
-        etag = md5(test_data).hexdigest()
+        etag = md5(test_data, usedforsecurity=False).hexdigest()
         ec_archive_bodies = encode_frag_archive_bodies(self.policy, test_data)
 
         broken_body = ec_archive_bodies.pop(1)
@@ -4865,8 +4868,9 @@ class TestReconstructFragmentArchive(BaseTestObjectReconstructor):
                 job, node, dict(self.obj_metadata))
             fixed_body = b''.join(df.reader())
             self.assertEqual(len(fixed_body), len(broken_body))
-            self.assertEqual(md5(fixed_body).hexdigest(),
-                             md5(broken_body).hexdigest())
+            self.assertEqual(
+                md5(fixed_body, usedforsecurity=False).hexdigest(),
+                md5(broken_body, usedforsecurity=False).hexdigest())
 
         # one newer etag won't spoil the bunch
         new_index = random.randint(0, self.policy.ec_ndata - 1)
@@ -4881,8 +4885,9 @@ class TestReconstructFragmentArchive(BaseTestObjectReconstructor):
                 job, node, dict(self.obj_metadata))
             fixed_body = b''.join(df.reader())
             self.assertEqual(len(fixed_body), len(broken_body))
-            self.assertEqual(md5(fixed_body).hexdigest(),
-                             md5(broken_body).hexdigest())
+            self.assertEqual(
+                md5(fixed_body, usedforsecurity=False).hexdigest(),
+                md5(broken_body, usedforsecurity=False).hexdigest())
 
         # no error and warning
         self.assertFalse(self.logger.get_lines_for_level('error'))
@@ -4898,7 +4903,7 @@ class TestReconstructFragmentArchive(BaseTestObjectReconstructor):
         node['backend_index'] = self.policy.get_backend_index(node['index'])
 
         test_data = (b'rebuild' * self.policy.ec_segment_size)[:-777]
-        etag = md5(test_data).hexdigest()
+        etag = md5(test_data, usedforsecurity=False).hexdigest()
         ec_archive_bodies = encode_frag_archive_bodies(self.policy, test_data)
 
         broken_body = ec_archive_bodies.pop(1)
@@ -4917,8 +4922,9 @@ class TestReconstructFragmentArchive(BaseTestObjectReconstructor):
                 job, node, dict(self.obj_metadata))
             fixed_body = b''.join(df.reader())
             self.assertEqual(len(fixed_body), len(broken_body))
-            self.assertEqual(md5(fixed_body).hexdigest(),
-                             md5(broken_body).hexdigest())
+            self.assertEqual(
+                md5(fixed_body, usedforsecurity=False).hexdigest(),
+                md5(broken_body, usedforsecurity=False).hexdigest())
 
         # a response at same timestamp but different etag won't spoil the bunch
         # N.B. (FIXME). if we choose the first response as garbage, the
@@ -4937,8 +4943,9 @@ class TestReconstructFragmentArchive(BaseTestObjectReconstructor):
                 job, node, dict(self.obj_metadata))
             fixed_body = b''.join(df.reader())
             self.assertEqual(len(fixed_body), len(broken_body))
-            self.assertEqual(md5(fixed_body).hexdigest(),
-                             md5(broken_body).hexdigest())
+            self.assertEqual(
+                md5(fixed_body, usedforsecurity=False).hexdigest(),
+                md5(broken_body, usedforsecurity=False).hexdigest())
 
         # expect an error log but no warnings
         error_log_lines = self.logger.get_lines_for_level('error')
@@ -4968,7 +4975,8 @@ class TestReconstructFragmentArchive(BaseTestObjectReconstructor):
             archive_bodies = encode_frag_archive_bodies(self.policy, body)
             # pop the index to the destination node
             archive_bodies.pop(1)
-            key = (md5(body).hexdigest(), next(ts).internal, bool(i % 2))
+            key = (md5(body, usedforsecurity=False).hexdigest(),
+                   next(ts).internal, bool(i % 2))
             ec_archive_dict[key] = archive_bodies
 
         responses = list()
@@ -5041,7 +5049,7 @@ class TestReconstructFragmentArchive(BaseTestObjectReconstructor):
         node['backend_index'] = self.policy.get_backend_index(node['index'])
 
         test_data = (b'rebuild' * self.policy.ec_segment_size)[:-777]
-        etag = md5(test_data).hexdigest()
+        etag = md5(test_data, usedforsecurity=False).hexdigest()
         ec_archive_bodies = encode_frag_archive_bodies(self.policy, test_data)
 
         # instead of popping the broken body, we'll just leave it in the list
@@ -5062,8 +5070,9 @@ class TestReconstructFragmentArchive(BaseTestObjectReconstructor):
                 job, node, self.obj_metadata)
             fixed_body = b''.join(df.reader())
             self.assertEqual(len(fixed_body), len(broken_body))
-            self.assertEqual(md5(fixed_body).hexdigest(),
-                             md5(broken_body).hexdigest())
+            self.assertEqual(
+                md5(fixed_body, usedforsecurity=False).hexdigest(),
+                md5(broken_body, usedforsecurity=False).hexdigest())
 
         # no error, no warning
         self.assertFalse(self.logger.get_lines_for_level('error'))
@@ -5100,7 +5109,7 @@ class TestReconstructFragmentArchive(BaseTestObjectReconstructor):
         node['backend_index'] = self.policy.get_backend_index(node['index'])
 
         test_data = (b'rebuild' * self.policy.ec_segment_size)[:-777]
-        etag = md5(test_data).hexdigest()
+        etag = md5(test_data, usedforsecurity=False).hexdigest()
         ec_archive_bodies = encode_frag_archive_bodies(self.policy, test_data)
 
         broken_body = ec_archive_bodies.pop(1)
@@ -5122,8 +5131,9 @@ class TestReconstructFragmentArchive(BaseTestObjectReconstructor):
                 job, node, self.obj_metadata)
             fixed_body = b''.join(df.reader())
             self.assertEqual(len(fixed_body), len(broken_body))
-            self.assertEqual(md5(fixed_body).hexdigest(),
-                             md5(broken_body).hexdigest())
+            self.assertEqual(
+                md5(fixed_body, usedforsecurity=False).hexdigest(),
+                md5(broken_body, usedforsecurity=False).hexdigest())
 
         # no error and warning
         self.assertFalse(self.logger.get_lines_for_level('error'))
@@ -5150,7 +5160,7 @@ class TestReconstructFragmentArchive(BaseTestObjectReconstructor):
         node['backend_index'] = self.policy.get_backend_index(node['index'])
 
         test_data = (b'rebuild' * self.policy.ec_segment_size)[:-777]
-        etag = md5(test_data).hexdigest()
+        etag = md5(test_data, usedforsecurity=False).hexdigest()
         ec_archive_bodies = encode_frag_archive_bodies(self.policy, test_data)
 
         broken_body = ec_archive_bodies.pop(1)
@@ -5180,8 +5190,9 @@ class TestReconstructFragmentArchive(BaseTestObjectReconstructor):
                     job, node, self.obj_metadata)
                 fixed_body = b''.join(df.reader())
                 self.assertEqual(len(fixed_body), len(broken_body))
-                self.assertEqual(md5(fixed_body).hexdigest(),
-                                 md5(broken_body).hexdigest())
+                self.assertEqual(
+                    md5(fixed_body, usedforsecurity=False).hexdigest(),
+                    md5(broken_body, usedforsecurity=False).hexdigest())
 
             # no errors
             self.assertFalse(self.logger.get_lines_for_level('error'))
@@ -5222,7 +5233,7 @@ class TestReconstructFragmentArchive(BaseTestObjectReconstructor):
         node['backend_index'] = self.policy.get_backend_index(node['index'])
 
         test_data = (b'rebuild' * self.policy.ec_segment_size)[:-777]
-        etag = md5(test_data).hexdigest()
+        etag = md5(test_data, usedforsecurity=False).hexdigest()
         ec_archive_bodies = encode_frag_archive_bodies(self.policy, test_data)
 
         broken_body = ec_archive_bodies.pop(1)
@@ -5247,8 +5258,9 @@ class TestReconstructFragmentArchive(BaseTestObjectReconstructor):
                     job, node, self.obj_metadata)
                 fixed_body = b''.join(df.reader())
                 self.assertEqual(len(fixed_body), len(broken_body))
-                self.assertEqual(md5(fixed_body).hexdigest(),
-                                 md5(broken_body).hexdigest())
+                self.assertEqual(
+                    md5(fixed_body, usedforsecurity=False).hexdigest(),
+                    md5(broken_body, usedforsecurity=False).hexdigest())
 
             # no errors
             self.assertFalse(self.logger.get_lines_for_level('error'))
@@ -5305,7 +5317,7 @@ class TestObjectReconstructorECDuplicationFactor(TestObjectReconstructor):
         }
 
         test_data = (b'rebuild' * self.policy.ec_segment_size)[:-777]
-        etag = md5(test_data).hexdigest()
+        etag = md5(test_data, usedforsecurity=False).hexdigest()
         ec_archive_bodies = encode_frag_archive_bodies(self.policy, test_data)
 
         broken_body = ec_archive_bodies.pop(index)
@@ -5343,8 +5355,9 @@ class TestObjectReconstructorECDuplicationFactor(TestObjectReconstructor):
                     job, node, metadata)
                 fixed_body = b''.join(df.reader())
                 self.assertEqual(len(fixed_body), len(broken_body))
-                self.assertEqual(md5(fixed_body).hexdigest(),
-                                 md5(broken_body).hexdigest())
+                self.assertEqual(
+                    md5(fixed_body, usedforsecurity=False).hexdigest(),
+                    md5(broken_body, usedforsecurity=False).hexdigest())
                 for called_header in called_headers:
                     called_header = HeaderKeyDict(called_header)
                     self.assertIn('Content-Length', called_header)
diff --git a/test/unit/obj/test_server.py b/test/unit/obj/test_server.py
index 4cac67d95..f04e9523c 100644
--- a/test/unit/obj/test_server.py
+++ b/test/unit/obj/test_server.py
@@ -31,7 +31,6 @@ import random
 from shutil import rmtree
 from time import gmtime, strftime, time, struct_time
 from tempfile import mkdtemp
-from hashlib import md5
 from collections import defaultdict
 from contextlib import contextmanager
 from textwrap import dedent
@@ -53,7 +52,7 @@ from swift.common import utils, bufferedhttp
 from swift.common.header_key_dict import HeaderKeyDict
 from swift.common.utils import hash_path, mkdirs, normalize_timestamp, \
     NullLogger, storage_directory, public, replication, encode_timestamps, \
-    Timestamp
+    Timestamp, md5
 from swift.common import constraints
 from swift.common.request_helpers import get_reserved_name
 from swift.common.swob import Request, WsgiBytesIO
@@ -261,7 +260,7 @@ class TestObjectController(unittest.TestCase):
         req = Request.blank('/sda1/p/a/c/o', environ={'REQUEST_METHOD': 'PUT'},
                             headers=headers)
         req.body = b'VERIFY'
-        etag = '"%s"' % md5(b'VERIFY').hexdigest()
+        etag = '"%s"' % md5(b'VERIFY', usedforsecurity=False).hexdigest()
         resp = req.get_response(self.object_controller)
         self.assertEqual(resp.status_int, 201)
         self.assertEqual(dict(resp.headers), {
@@ -1725,9 +1724,10 @@ class TestObjectController(unittest.TestCase):
                      'X-Backend-Obj-Multipart-Mime-Boundary': 'boundary'},
             environ={'REQUEST_METHOD': 'PUT'})
 
-        obj_etag = md5(b"obj data").hexdigest()
+        obj_etag = md5(b"obj data", usedforsecurity=False).hexdigest()
         footer_meta = json.dumps({"Etag": obj_etag}).encode('ascii')
-        footer_meta_cksum = md5(footer_meta).hexdigest().encode('ascii')
+        footer_meta_cksum = md5(
+            footer_meta, usedforsecurity=False).hexdigest().encode('ascii')
 
         req.body = b"\r\n".join((
             b"--boundary",
@@ -1773,11 +1773,12 @@ class TestObjectController(unittest.TestCase):
             '/sda1/p/a/c/o', headers=headers,
             environ={'REQUEST_METHOD': 'PUT'})
 
-        obj_etag = md5(b"obj data").hexdigest()
+        obj_etag = md5(b"obj data", usedforsecurity=False).hexdigest()
         footers = {'Etag': obj_etag}
         footers.update(override_footers)
         footer_meta = json.dumps(footers).encode('ascii')
-        footer_meta_cksum = md5(footer_meta).hexdigest().encode('ascii')
+        footer_meta_cksum = md5(
+            footer_meta, usedforsecurity=False).hexdigest().encode('ascii')
 
         req.body = b"\r\n".join((
             b"--boundary",
@@ -1863,9 +1864,10 @@ class TestObjectController(unittest.TestCase):
                      'X-Backend-Obj-Multipart-Mime-Boundary': 'boundary'},
             environ={'REQUEST_METHOD': 'PUT'})
 
-        footers = {"Etag": md5(b"green").hexdigest()}
+        footers = {"Etag": md5(b"green", usedforsecurity=False).hexdigest()}
         footer_meta = json.dumps(footers).encode('ascii')
-        footer_meta_cksum = md5(footer_meta).hexdigest().encode('ascii')
+        footer_meta_cksum = md5(
+            footer_meta, usedforsecurity=False).hexdigest().encode('ascii')
 
         req.body = b"\r\n".join((
             b"--boundary",
@@ -1899,7 +1901,8 @@ class TestObjectController(unittest.TestCase):
             'X-Object-Meta-X': 'Y',
             'X-Object-Sysmeta-X': 'Y',
         }).encode('ascii')
-        footer_meta_cksum = md5(footer_meta).hexdigest().encode('ascii')
+        footer_meta_cksum = md5(
+            footer_meta, usedforsecurity=False).hexdigest().encode('ascii')
 
         req.body = b"\r\n".join((
             b"--boundary",
@@ -1937,7 +1940,7 @@ class TestObjectController(unittest.TestCase):
             environ={'REQUEST_METHOD': 'PUT'})
 
         footer_meta = json.dumps({
-            "Etag": md5(b"obj data").hexdigest()
+            "Etag": md5(b"obj data", usedforsecurity=False).hexdigest()
         }).encode('ascii')
 
         req.body = b"\r\n".join((
@@ -1967,10 +1970,11 @@ class TestObjectController(unittest.TestCase):
             environ={'REQUEST_METHOD': 'PUT'})
 
         footer_meta = json.dumps({
-            "Etag": md5(b"obj data").hexdigest()
+            "Etag": md5(b"obj data", usedforsecurity=False).hexdigest()
         }).encode('ascii')
         bad_footer_meta_cksum = \
-            md5(footer_meta + b"bad").hexdigest().encode('ascii')
+            md5(footer_meta + b"bad",
+                usedforsecurity=False).hexdigest().encode('ascii')
 
         req.body = b"\r\n".join((
             b"--boundary",
@@ -1999,7 +2003,8 @@ class TestObjectController(unittest.TestCase):
             environ={'REQUEST_METHOD': 'PUT'})
 
         footer_meta = b"{{{[[{{[{[[{[{[[{{{[{{{{[[{{[{["
-        footer_meta_cksum = md5(footer_meta).hexdigest().encode('ascii')
+        footer_meta_cksum = md5(
+            footer_meta, usedforsecurity=False).hexdigest().encode('ascii')
 
         req.body = b"\r\n".join((
             b"--boundary",
@@ -2030,7 +2035,8 @@ class TestObjectController(unittest.TestCase):
         footer_meta = json.dumps({
             'X-Object-Meta-Mint': 'pepper'
         }).encode('ascii')
-        footer_meta_cksum = md5(footer_meta).hexdigest().encode('ascii')
+        footer_meta_cksum = md5(
+            footer_meta, usedforsecurity=False).hexdigest().encode('ascii')
 
         req.body = b"\r\n".join((
             b"--boundary",
@@ -3921,7 +3927,7 @@ class TestObjectController(unittest.TestCase):
                                              policy=POLICIES.legacy)
         disk_file.open()
         file_name = os.path.basename(disk_file._data_file)
-        etag = md5()
+        etag = md5(usedforsecurity=False)
         etag.update(b'VERIF')
         etag = etag.hexdigest()
         metadata = {'X-Timestamp': timestamp, 'name': '/a/c/o',
@@ -3983,7 +3989,7 @@ class TestObjectController(unittest.TestCase):
                                              policy=POLICIES.legacy)
         disk_file.open(timestamp)
         file_name = os.path.basename(disk_file._data_file)
-        etag = md5()
+        etag = md5(usedforsecurity=False)
         etag.update(b'VERIF')
         etag = etag.hexdigest()
         metadata = {'X-Timestamp': timestamp, 'name': '/a/c/o',
@@ -4314,7 +4320,7 @@ class TestObjectController(unittest.TestCase):
             self.assertEqual(path, '/sda1/p/a/c/o')
             expected = {
                 'X-Size': len(b'test1'),
-                'X-Etag': md5(b'test1').hexdigest(),
+                'X-Etag': md5(b'test1', usedforsecurity=False).hexdigest(),
                 'X-Content-Type': 'text/plain',
                 'X-Timestamp': create_timestamp,
             }
@@ -4354,7 +4360,7 @@ class TestObjectController(unittest.TestCase):
             self.assertEqual(path, '/sda1/p/a/c/o')
             expected = {
                 'X-Size': len(b'test2'),
-                'X-Etag': md5(b'test2').hexdigest(),
+                'X-Etag': md5(b'test2', usedforsecurity=False).hexdigest(),
                 'X-Content-Type': 'text/html',
                 'X-Timestamp': offset_timestamp,
             }
@@ -4393,7 +4399,7 @@ class TestObjectController(unittest.TestCase):
             self.assertEqual(path, '/sda1/p/a/c/o')
             expected = {
                 'X-Size': len(b'test3'),
-                'X-Etag': md5(b'test3').hexdigest(),
+                'X-Etag': md5(b'test3', usedforsecurity=False).hexdigest(),
                 'X-Content-Type': 'text/enriched',
                 'X-Timestamp': overwrite_timestamp,
             }
@@ -4562,7 +4568,7 @@ class TestObjectController(unittest.TestCase):
             return False
 
         def my_hash_path(*args):
-            return md5(b'collide').hexdigest()
+            return md5(b'collide', usedforsecurity=False).hexdigest()
 
         with mock.patch("swift.obj.diskfile.hash_path", my_hash_path):
             with mock.patch("swift.obj.server.check_object_creation",
@@ -7677,10 +7683,11 @@ class TestObjectController(unittest.TestCase):
         test_data = b'obj data'
         footer_meta = {
             "X-Object-Sysmeta-Ec-Frag-Index": "7",
-            "Etag": md5(test_data).hexdigest(),
+            "Etag": md5(test_data, usedforsecurity=False).hexdigest(),
         }
         footer_json = json.dumps(footer_meta).encode('ascii')
-        footer_meta_cksum = md5(footer_json).hexdigest().encode('ascii')
+        footer_meta_cksum = md5(
+            footer_json, usedforsecurity=False).hexdigest().encode('ascii')
         test_doc = b"\r\n".join((
             b"--boundary123",
             b"X-Document: object body",
@@ -7921,10 +7928,11 @@ class TestObjectServer(unittest.TestCase):
         test_data = encode_frag_archive_bodies(POLICIES[1], b'obj data')[0]
         footer_meta = {
             "X-Object-Sysmeta-Ec-Frag-Index": "2",
-            "Etag": md5(test_data).hexdigest(),
+            "Etag": md5(test_data, usedforsecurity=False).hexdigest(),
         }
         footer_json = json.dumps(footer_meta).encode('ascii')
-        footer_meta_cksum = md5(footer_json).hexdigest().encode('ascii')
+        footer_meta_cksum = md5(
+            footer_json, usedforsecurity=False).hexdigest().encode('ascii')
         test_doc = test_doc or b"\r\n".join((
             b"--boundary123",
             b"X-Document: object body",
@@ -8193,10 +8201,11 @@ class TestObjectServer(unittest.TestCase):
             # make footer doc
             footer_meta = {
                 "X-Object-Sysmeta-Ec-Frag-Index": "2",
-                "Etag": md5(test_data).hexdigest(),
+                "Etag": md5(test_data, usedforsecurity=False).hexdigest(),
             }
             footer_json = json.dumps(footer_meta).encode('ascii')
-            footer_meta_cksum = md5(footer_json).hexdigest().encode('ascii')
+            footer_meta_cksum = md5(
+                footer_json, usedforsecurity=False).hexdigest().encode('ascii')
 
             # send most of the footer doc
             footer_doc = b"\r\n".join((
diff --git a/test/unit/proxy/controllers/test_obj.py b/test/unit/proxy/controllers/test_obj.py
index 6a6434545..1ec6265f0 100644
--- a/test/unit/proxy/controllers/test_obj.py
+++ b/test/unit/proxy/controllers/test_obj.py
@@ -23,7 +23,6 @@ import unittest
 from collections import defaultdict
 from contextlib import contextmanager
 import json
-from hashlib import md5
 
 import mock
 from eventlet import Timeout, sleep
@@ -41,7 +40,7 @@ else:
 import swift
 from swift.common import utils, swob, exceptions
 from swift.common.exceptions import ChunkWriteTimeout
-from swift.common.utils import Timestamp, list_from_csv
+from swift.common.utils import Timestamp, list_from_csv, md5
 from swift.proxy import server as proxy_server
 from swift.proxy.controllers import obj
 from swift.proxy.controllers.base import \
@@ -143,7 +142,8 @@ def make_footers_callback(body=None):
     crypto_etag = '20242af0cd21dd7195a10483eb7472c9'
     etag_crypto_meta = \
         '{"cipher": "AES_CTR_256", "iv": "sD+PSw/DfqYwpsVGSo0GEw=="}'
-    etag = md5(body).hexdigest() if body is not None else None
+    etag = md5(body,
+               usedforsecurity=False).hexdigest() if body is not None else None
     footers_to_add = {
         'X-Object-Sysmeta-Container-Update-Override-Etag': cont_etag,
         'X-Object-Sysmeta-Crypto-Etag': crypto_etag,
@@ -1078,7 +1078,7 @@ class TestReplicatedObjController(CommonObjectControllerMixin,
                                               body=test_body)
         if chunked:
             req.headers['Transfer-Encoding'] = 'chunked'
-        etag = md5(test_body).hexdigest()
+        etag = md5(test_body, usedforsecurity=False).hexdigest()
         req.headers['Etag'] = etag
 
         put_requests = defaultdict(
@@ -2188,7 +2188,8 @@ class ECObjectControllerMixin(CommonObjectControllerMixin):
 
         self.assertEqual(resp.status_int, 200)
         self.assertEqual(resp.headers['etag'], obj1['etag'])
-        self.assertEqual(md5(resp.body).hexdigest(), obj1['etag'])
+        self.assertEqual(md5(
+            resp.body, usedforsecurity=False).hexdigest(), obj1['etag'])
 
         # expect a request to all primaries plus one handoff
         self.assertEqual(self.replicas() + 1, len(log))
@@ -2524,7 +2525,7 @@ class TestECObjController(ECObjectControllerMixin, unittest.TestCase):
     def test_GET_with_slow_primaries(self):
         segment_size = self.policy.ec_segment_size
         test_data = (b'test' * segment_size)[:-743]
-        etag = md5(test_data).hexdigest()
+        etag = md5(test_data, usedforsecurity=False).hexdigest()
         ec_archive_bodies = self._make_ec_archive_bodies(test_data)
         ts = self.ts()
         headers = []
@@ -2562,7 +2563,7 @@ class TestECObjController(ECObjectControllerMixin, unittest.TestCase):
     def test_GET_with_some_slow_primaries(self):
         segment_size = self.policy.ec_segment_size
         test_data = (b'test' * segment_size)[:-289]
-        etag = md5(test_data).hexdigest()
+        etag = md5(test_data, usedforsecurity=False).hexdigest()
         ec_archive_bodies = self._make_ec_archive_bodies(test_data)
         ts = self.ts()
         headers = []
@@ -2649,7 +2650,7 @@ class TestECObjController(ECObjectControllerMixin, unittest.TestCase):
     def test_GET_with_slow_nodes_and_failures(self):
         segment_size = self.policy.ec_segment_size
         test_data = (b'test' * segment_size)[:-289]
-        etag = md5(test_data).hexdigest()
+        etag = md5(test_data, usedforsecurity=False).hexdigest()
         ec_archive_bodies = self._make_ec_archive_bodies(test_data)
         ts = self.ts()
         headers = []
@@ -2703,7 +2704,7 @@ class TestECObjController(ECObjectControllerMixin, unittest.TestCase):
     def test_GET_with_one_slow_frag_lane(self):
         segment_size = self.policy.ec_segment_size
         test_data = (b'test' * segment_size)[:-454]
-        etag = md5(test_data).hexdigest()
+        etag = md5(test_data, usedforsecurity=False).hexdigest()
         ec_archive_bodies = self._make_ec_archive_bodies(test_data)
         ts = self.ts()
         headers = []
@@ -2748,7 +2749,7 @@ class TestECObjController(ECObjectControllerMixin, unittest.TestCase):
     def test_GET_with_concurrent_ec_extra_requests(self):
         segment_size = self.policy.ec_segment_size
         test_data = (b'test' * segment_size)[:-454]
-        etag = md5(test_data).hexdigest()
+        etag = md5(test_data, usedforsecurity=False).hexdigest()
         ec_archive_bodies = self._make_ec_archive_bodies(test_data)
         ts = self.ts()
         headers = []
@@ -2825,7 +2826,7 @@ class TestECObjController(ECObjectControllerMixin, unittest.TestCase):
     def test_GET_with_frags_swapped_around(self):
         segment_size = self.policy.ec_segment_size
         test_data = (b'test' * segment_size)[:-657]
-        etag = md5(test_data).hexdigest()
+        etag = md5(test_data, usedforsecurity=False).hexdigest()
         ec_archive_bodies = self._make_ec_archive_bodies(test_data)
 
         _part, primary_nodes = self.obj_ring.get_nodes('a', 'c', 'o')
@@ -2909,7 +2910,8 @@ class TestECObjController(ECObjectControllerMixin, unittest.TestCase):
 
         self.assertEqual(resp.status_int, 200)
         self.assertEqual(resp.headers['etag'], obj1['etag'])
-        self.assertEqual(md5(resp.body).hexdigest(), obj1['etag'])
+        self.assertEqual(md5(
+            resp.body, usedforsecurity=False).hexdigest(), obj1['etag'])
 
         collected_responses = defaultdict(list)
         for conn in log:
@@ -2964,7 +2966,8 @@ class TestECObjController(ECObjectControllerMixin, unittest.TestCase):
             obj1['etag']: {True},
             obj2['etag']: {False},
         }, closed_conn)
-        self.assertEqual(md5(resp.body).hexdigest(), obj2['etag'])
+        self.assertEqual(md5(
+            resp.body, usedforsecurity=False).hexdigest(), obj2['etag'])
         self.assertEqual({True}, {conn.closed for conn in log})
 
         collected_responses = defaultdict(set)
@@ -3011,7 +3014,8 @@ class TestECObjController(ECObjectControllerMixin, unittest.TestCase):
 
         self.assertEqual(resp.status_int, 200)
         self.assertEqual(resp.headers['etag'], obj2['etag'])
-        self.assertEqual(md5(resp.body).hexdigest(), obj2['etag'])
+        self.assertEqual(md5(
+            resp.body, usedforsecurity=False).hexdigest(), obj2['etag'])
 
         collected_responses = defaultdict(set)
         for conn in log:
@@ -3075,7 +3079,8 @@ class TestECObjController(ECObjectControllerMixin, unittest.TestCase):
 
         self.assertEqual(resp.status_int, 200)
         self.assertEqual(resp.headers['etag'], obj2['etag'])
-        self.assertEqual(md5(resp.body).hexdigest(), obj2['etag'])
+        self.assertEqual(md5(
+            resp.body, usedforsecurity=False).hexdigest(), obj2['etag'])
 
         collected_responses = defaultdict(set)
         for conn in log:
@@ -3195,7 +3200,8 @@ class TestECObjController(ECObjectControllerMixin, unittest.TestCase):
 
         self.assertEqual(resp.status_int, 200)
         self.assertEqual(resp.headers['etag'], obj1['etag'])
-        self.assertEqual(md5(resp.body).hexdigest(), obj1['etag'])
+        self.assertEqual(md5(
+            resp.body, usedforsecurity=False).hexdigest(), obj1['etag'])
 
         # Expect a maximum of one request to each primary plus one extra
         # request to node 1. Actual value could be less if the extra request
@@ -3489,7 +3495,8 @@ class TestECObjController(ECObjectControllerMixin, unittest.TestCase):
 
         self.assertEqual(resp.status_int, 200)
         self.assertEqual(resp.headers['etag'], obj1['etag'])
-        self.assertEqual(md5(resp.body).hexdigest(), obj1['etag'])
+        self.assertEqual(md5(
+            resp.body, usedforsecurity=False).hexdigest(), obj1['etag'])
 
         self.assertGreaterEqual(len(log), self.policy.ec_ndata)
         collected_durables = []
@@ -3534,7 +3541,8 @@ class TestECObjController(ECObjectControllerMixin, unittest.TestCase):
 
         self.assertEqual(resp.status_int, 200)
         self.assertEqual(resp.headers['etag'], obj1['etag'])
-        self.assertEqual(md5(resp.body).hexdigest(), obj1['etag'])
+        self.assertEqual(md5(
+            resp.body, usedforsecurity=False).hexdigest(), obj1['etag'])
 
         collected_durables = []
         for conn in log:
@@ -3625,7 +3633,8 @@ class TestECObjController(ECObjectControllerMixin, unittest.TestCase):
 
         self.assertEqual(resp.status_int, 200)
         self.assertEqual(resp.headers['etag'], obj1['etag'])
-        self.assertEqual(md5(resp.body).hexdigest(), obj1['etag'])
+        self.assertEqual(md5(
+            resp.body, usedforsecurity=False).hexdigest(), obj1['etag'])
 
         # Quorum of non-durables for a different object won't
         # prevent us hunting down the durable object
@@ -3670,7 +3679,8 @@ class TestECObjController(ECObjectControllerMixin, unittest.TestCase):
 
         self.assertEqual(resp.status_int, 200)
         self.assertEqual(resp.headers['etag'], obj1['etag'])
-        self.assertEqual(md5(resp.body).hexdigest(), obj1['etag'])
+        self.assertEqual(md5(
+            resp.body, usedforsecurity=False).hexdigest(), obj1['etag'])
 
     def test_GET_with_missing_durables_and_older_durables(self):
         # scenario: non-durable frags of newer obj1 obscure all durable frags
@@ -3725,7 +3735,8 @@ class TestECObjController(ECObjectControllerMixin, unittest.TestCase):
 
         self.assertEqual(resp.status_int, 200)
         self.assertEqual(resp.headers['etag'], obj2['etag'])
-        self.assertEqual(md5(resp.body).hexdigest(), obj2['etag'])
+        self.assertEqual(md5(
+            resp.body, usedforsecurity=False).hexdigest(), obj2['etag'])
         # max: proxy will GET all non-durable obj1 frags and then 10 obj frags
         self.assertLessEqual(len(log), self.replicas() + self.policy.ec_ndata)
         # min: proxy will GET 10 non-durable obj1 frags and then 10 obj frags
@@ -3770,7 +3781,8 @@ class TestECObjController(ECObjectControllerMixin, unittest.TestCase):
 
         self.assertEqual(resp.status_int, 200)
         self.assertEqual(resp.headers['etag'], obj3['etag'])
-        self.assertEqual(md5(resp.body).hexdigest(), obj3['etag'])
+        self.assertEqual(md5(
+            resp.body, usedforsecurity=False).hexdigest(), obj3['etag'])
         self.assertGreaterEqual(len(log), self.policy.ec_ndata + 1)
         self.assertLessEqual(len(log), (self.policy.ec_ndata * 2) + 1)
 
@@ -3817,7 +3829,8 @@ class TestECObjController(ECObjectControllerMixin, unittest.TestCase):
 
         self.assertEqual(resp.status_int, 200)
         self.assertEqual(resp.headers['etag'], obj2['etag'])
-        self.assertEqual(md5(resp.body).hexdigest(), obj2['etag'])
+        self.assertEqual(md5(
+            resp.body, usedforsecurity=False).hexdigest(), obj2['etag'])
         # max: proxy will GET all non-durable obj1 frags and then 10 obj2 frags
         self.assertLessEqual(len(log), self.replicas() + self.policy.ec_ndata)
         # min: proxy will GET 10 non-durable obj1 frags and then 10 obj2 frags
@@ -4055,10 +4068,10 @@ class TestECObjController(ECObjectControllerMixin, unittest.TestCase):
         segment_size = self.policy.ec_segment_size
         frag_size = self.policy.fragment_size
         new_data = (b'test' * segment_size)[:-492]
-        new_etag = md5(new_data).hexdigest()
+        new_etag = md5(new_data, usedforsecurity=False).hexdigest()
         new_archives = self._make_ec_archive_bodies(new_data)
         old_data = (b'junk' * segment_size)[:-492]
-        old_etag = md5(old_data).hexdigest()
+        old_etag = md5(old_data, usedforsecurity=False).hexdigest()
         old_archives = self._make_ec_archive_bodies(old_data)
         frag_archive_size = len(new_archives[0])
 
@@ -4135,8 +4148,8 @@ class TestECObjController(ECObjectControllerMixin, unittest.TestCase):
         # N.B. the object data *length* here is different
         test_data2 = (b'blah1' * segment_size)[:-333]
 
-        etag1 = md5(test_data1).hexdigest()
-        etag2 = md5(test_data2).hexdigest()
+        etag1 = md5(test_data1, usedforsecurity=False).hexdigest()
+        etag2 = md5(test_data2, usedforsecurity=False).hexdigest()
 
         ec_archive_bodies1 = self._make_ec_archive_bodies(test_data1)
         ec_archive_bodies2 = self._make_ec_archive_bodies(test_data2)
@@ -4161,7 +4174,9 @@ class TestECObjController(ECObjectControllerMixin, unittest.TestCase):
                               headers=headers):
             resp = req.get_response(self.app)
         self.assertEqual(resp.status_int, 200)
-        self.assertEqual(md5(resp.body).hexdigest(), etag1)
+        self.assertEqual(
+            md5(resp.body, usedforsecurity=False).hexdigest(),
+            etag1)
 
         # sanity check responses2
         responses = responses2[:self.policy.ec_ndata]
@@ -4170,7 +4185,9 @@ class TestECObjController(ECObjectControllerMixin, unittest.TestCase):
                               headers=headers):
             resp = req.get_response(self.app)
         self.assertEqual(resp.status_int, 200)
-        self.assertEqual(md5(resp.body).hexdigest(), etag2)
+        self.assertEqual(
+            md5(resp.body, usedforsecurity=False).hexdigest(),
+            etag2)
 
         # now mix the responses a bit
         mix_index = random.randint(0, self.policy.ec_ndata - 1)
@@ -4199,7 +4216,7 @@ class TestECObjController(ECObjectControllerMixin, unittest.TestCase):
     def test_GET_read_timeout(self):
         segment_size = self.policy.ec_segment_size
         test_data = (b'test' * segment_size)[:-333]
-        etag = md5(test_data).hexdigest()
+        etag = md5(test_data, usedforsecurity=False).hexdigest()
         ec_archive_bodies = self._make_ec_archive_bodies(test_data)
         headers = {'X-Object-Sysmeta-Ec-Etag': etag}
         self.app.recoverable_node_timeout = 0.01
@@ -4219,7 +4236,9 @@ class TestECObjController(ECObjectControllerMixin, unittest.TestCase):
             self.assertEqual(resp.status_int, 200)
             # do this inside the fake http context manager, it'll try to
             # resume but won't be able to give us all the right bytes
-            self.assertNotEqual(md5(resp.body).hexdigest(), etag)
+            self.assertNotEqual(
+                md5(resp.body, usedforsecurity=False).hexdigest(),
+                etag)
         error_lines = self.logger.get_lines_for_level('error')
         nparity = self.policy.ec_nparity
         self.assertGreater(len(error_lines), nparity)
@@ -4233,7 +4252,7 @@ class TestECObjController(ECObjectControllerMixin, unittest.TestCase):
     def test_GET_read_timeout_resume(self):
         segment_size = self.policy.ec_segment_size
         test_data = (b'test' * segment_size)[:-333]
-        etag = md5(test_data).hexdigest()
+        etag = md5(test_data, usedforsecurity=False).hexdigest()
         ec_archive_bodies = self._make_ec_archive_bodies(test_data)
         headers = {
             'X-Object-Sysmeta-Ec-Etag': etag,
@@ -4255,7 +4274,9 @@ class TestECObjController(ECObjectControllerMixin, unittest.TestCase):
                               headers=headers):
             resp = req.get_response(self.app)
             self.assertEqual(resp.status_int, 200)
-            self.assertEqual(md5(resp.body).hexdigest(), etag)
+            self.assertEqual(
+                md5(resp.body, usedforsecurity=False).hexdigest(),
+                etag)
         error_lines = self.logger.get_lines_for_level('error')
         self.assertEqual(1, len(error_lines))
         self.assertIn('retrying', error_lines[0])
@@ -4303,8 +4324,8 @@ class TestECObjController(ECObjectControllerMixin, unittest.TestCase):
         segment_size = self.policy.ec_segment_size
         test_data2 = (b'blah1' * segment_size)[:-333]
         test_data1 = (b'test' * segment_size)[:-333]
-        etag2 = md5(test_data2).hexdigest()
-        etag1 = md5(test_data1).hexdigest()
+        etag2 = md5(test_data2, usedforsecurity=False).hexdigest()
+        etag1 = md5(test_data1, usedforsecurity=False).hexdigest()
         ec_archive_bodies2 = self._make_ec_archive_bodies(test_data2)
         ec_archive_bodies1 = self._make_ec_archive_bodies(test_data1)
         headers2 = {'X-Object-Sysmeta-Ec-Etag': etag2,
@@ -4382,7 +4403,9 @@ class TestECObjController(ECObjectControllerMixin, unittest.TestCase):
                               headers=headers) as log:
             resp = req.get_response(self.app)
             self.assertEqual(resp.status_int, 200)
-            self.assertEqual(md5(resp.body).hexdigest(), etag1)
+            self.assertEqual(
+                md5(resp.body, usedforsecurity=False).hexdigest(),
+                etag1)
         error_lines = self.logger.get_lines_for_level('error')
         self.assertEqual(2, len(error_lines))
         for line in error_lines:
@@ -4439,7 +4462,7 @@ class TestECObjController(ECObjectControllerMixin, unittest.TestCase):
 
     def _test_invalid_ranges(self, method, real_body, segment_size, req_range):
         # make a request with range starts from more than real size.
-        body_etag = md5(real_body).hexdigest()
+        body_etag = md5(real_body, usedforsecurity=False).hexdigest()
         req = swift.common.swob.Request.blank(
             '/v1/a/c/o', method=method,
             headers={'Destination': 'c1/o',
@@ -4643,7 +4666,9 @@ class TestECDuplicationObjController(
 
         self.assertEqual(resp.status_int, 200)
         self.assertEqual(resp.headers['etag'], obj['etag'])
-        self.assertEqual(md5(resp.body).hexdigest(), obj['etag'])
+        self.assertEqual(
+            md5(resp.body, usedforsecurity=False).hexdigest(),
+            obj['etag'])
 
         collected_responses = defaultdict(set)
         for conn in log:
@@ -4819,7 +4844,9 @@ class TestECDuplicationObjController(
 
         self.assertEqual(resp.status_int, 200)
         self.assertEqual(resp.headers['etag'], obj2['etag'])
-        self.assertEqual(md5(resp.body).hexdigest(), obj2['etag'])
+        self.assertEqual(
+            md5(resp.body, usedforsecurity=False).hexdigest(),
+            obj2['etag'])
 
         collected_responses = defaultdict(set)
         for conn in log:
@@ -4891,7 +4918,9 @@ class TestECDuplicationObjController(
 
         self.assertEqual(resp.status_int, 200)
         self.assertEqual(resp.headers['etag'], obj2['etag'])
-        self.assertEqual(md5(resp.body).hexdigest(), obj2['etag'])
+        self.assertEqual(
+            md5(resp.body, usedforsecurity=False).hexdigest(),
+            obj2['etag'])
 
         collected_responses = defaultdict(set)
         for conn in log:
@@ -5414,7 +5443,7 @@ class TestECObjControllerMimePutter(BaseObjectControllerMixin,
         env = {'swift.callback.update_footers': footers_callback}
         req = swift.common.swob.Request.blank(
             '/v1/a/c/o', method='PUT', environ=env)
-        etag = md5(test_body).hexdigest()
+        etag = md5(test_body, usedforsecurity=False).hexdigest()
         size = len(test_body)
         req.body = test_body
         if chunked:
@@ -5515,7 +5544,7 @@ class TestECObjControllerMimePutter(BaseObjectControllerMixin,
                 'X-Object-Sysmeta-Ec-Etag': etag,
                 'X-Backend-Container-Update-Override-Etag': etag,
                 'X-Object-Sysmeta-Ec-Segment-Size': str(segment_size),
-                'Etag': md5(obj_payload).hexdigest()})
+                'Etag': md5(obj_payload, usedforsecurity=False).hexdigest()})
             for header, value in expected.items():
                 self.assertEqual(footer_metadata[header], value)
 
@@ -5547,7 +5576,7 @@ class TestECObjControllerMimePutter(BaseObjectControllerMixin,
         # trailing metadata
         segment_size = self.policy.ec_segment_size
         test_body = (b'asdf' * segment_size)[:-10]
-        etag = md5(test_body).hexdigest()
+        etag = md5(test_body, usedforsecurity=False).hexdigest()
         size = len(test_body)
         codes = [201] * self.replicas()
         resp_headers = {
@@ -5623,7 +5652,9 @@ class TestECObjControllerMimePutter(BaseObjectControllerMixin,
                     'X-Object-Sysmeta-Ec-Content-Length': str(size),
                     'X-Object-Sysmeta-Ec-Etag': etag,
                     'X-Object-Sysmeta-Ec-Segment-Size': str(segment_size),
-                    'Etag': md5(obj_part.get_payload(decode=True)).hexdigest()}
+                    'Etag': md5(
+                        obj_part.get_payload(decode=True),
+                        usedforsecurity=False).hexdigest()}
                 expected.update(expect_added)
                 for header, value in expected.items():
                     self.assertIn(header, footer_metadata)
diff --git a/test/unit/proxy/test_server.py b/test/unit/proxy/test_server.py
index d6ce2f593..4345eab30 100644
--- a/test/unit/proxy/test_server.py
+++ b/test/unit/proxy/test_server.py
@@ -30,7 +30,6 @@ from shutil import rmtree, copyfile, move
 import gc
 import time
 from textwrap import dedent
-from hashlib import md5
 import collections
 from pyeclib.ec_iface import ECDriverError
 from tempfile import mkdtemp, NamedTemporaryFile
@@ -71,7 +70,7 @@ from swift.common.exceptions import ChunkReadTimeout, DiskFileNotExist, \
 from swift.common import utils, constraints
 from swift.common.utils import hash_path, storage_directory, \
     parse_content_type, parse_mime_headers, \
-    iter_multipart_mime_documents, public, mkdirs, NullLogger
+    iter_multipart_mime_documents, public, mkdirs, NullLogger, md5
 from swift.common.wsgi import loadapp, ConfigString, SwiftHttpProtocol
 from swift.proxy.controllers import base as proxy_base
 from swift.proxy.controllers.base import get_cache_key, cors_validation, \
@@ -2152,8 +2151,8 @@ class BaseTestObjectController(object):
         self.put_container(policy.name, container_name)
 
         obj = b'this object has an etag and is otherwise unimportant'
-        etag = md5(obj).hexdigest()
-        not_etag = md5(obj + b"blahblah").hexdigest()
+        etag = md5(obj, usedforsecurity=False).hexdigest()
+        not_etag = md5(obj + b"blahblah", usedforsecurity=False).hexdigest()
 
         prolis = _test_sockets[0]
         prosrv = _test_servers[0]
@@ -5687,7 +5686,8 @@ class TestReplicatedObjectController(
         self.assertEqual(headers[:len(exp)], exp)
 
         # request with both If-None-Match and Range
-        etag = md5(b"abcdefghij").hexdigest().encode('ascii')
+        etag = md5(b"abcdefghij",
+                   usedforsecurity=False).hexdigest().encode('ascii')
         sock = connect_tcp(('localhost', prolis.getsockname()[1]))
         fd = sock.makefile('rwb')
         fd.write(b'GET /v1/a/con/o HTTP/1.1\r\n' +
@@ -6562,7 +6562,8 @@ class BaseTestECObjectController(BaseTestObjectController):
                   'Content-Length: %d\r\n'
                   'X-Storage-Token: t\r\n'
                   'Content-Type: application/octet-stream\r\n'
-                  '\r\n' % (self.ec_policy.name, md5(obj).hexdigest(),
+                  '\r\n' % (self.ec_policy.name,
+                            md5(obj, usedforsecurity=False).hexdigest(),
                             len(obj))).encode('ascii'))
         fd.write(obj)
         fd.flush()
@@ -6597,7 +6598,7 @@ class BaseTestECObjectController(BaseTestObjectController):
 
                 self.assertEqual(
                     lmeta['x-object-sysmeta-ec-etag'],
-                    md5(obj).hexdigest())
+                    md5(obj, usedforsecurity=False).hexdigest())
                 self.assertEqual(
                     lmeta['x-object-sysmeta-ec-content-length'],
                     str(len(obj)))
@@ -6609,7 +6610,7 @@ class BaseTestECObjectController(BaseTestObjectController):
                     '%s 2+1' % DEFAULT_TEST_EC_TYPE)
                 self.assertEqual(
                     lmeta['etag'],
-                    md5(contents).hexdigest())
+                    md5(contents, usedforsecurity=False).hexdigest())
 
                 # check presence for a durable data file for the timestamp
                 durable_file = (
@@ -6738,7 +6739,8 @@ class BaseTestECObjectController(BaseTestObjectController):
                   'X-Storage-Token: t\r\n'
                   'Content-Type: application/octet-stream\r\n'
                   '\r\n' % (self.ec_policy.name,
-                            md5(b'something else').hexdigest(),
+                            md5(b'something else',
+                                usedforsecurity=False).hexdigest(),
                             len(obj))).encode('ascii'))
         fd.write(obj)
         fd.flush()
@@ -6769,8 +6771,8 @@ class BaseTestECObjectController(BaseTestObjectController):
             self.ec_policy.object_ring.replica_count - self.ec_policy.ec_ndata)
         countdown = [count]
 
-        def busted_md5_constructor(initial_str=b""):
-            hasher = md5(initial_str)
+        def busted_md5_constructor(initial_str=b"", usedforsecurity=True):
+            hasher = md5(initial_str, usedforsecurity=usedforsecurity)
             if countdown[0] > 0:
                 hasher.update(b'wrong')
             countdown[0] -= 1
@@ -6790,7 +6792,8 @@ class BaseTestECObjectController(BaseTestObjectController):
                       'Content-Length: %d\r\n'
                       'X-Storage-Token: t\r\n'
                       'Content-Type: application/octet-stream\r\n'
-                      '\r\n' % (self.ec_policy.name, md5(obj).hexdigest(),
+                      '\r\n' % (self.ec_policy.name,
+                                md5(obj, usedforsecurity=False).hexdigest(),
                                 len(obj))).encode('ascii'))
             fd.write(obj)
             fd.flush()
@@ -6830,9 +6833,9 @@ class BaseTestECObjectController(BaseTestObjectController):
     def test_PUT_ec_fragment_quorum_archive_etag_mismatch(self):
         self.put_container("ec", "ec-con")
 
-        def busted_md5_constructor(initial_str=""):
-            hasher = md5(initial_str)
-            hasher.update('wrong')
+        def busted_md5_constructor(initial_str=b"", usedforsecurity=True):
+            hasher = md5(initial_str, usedforsecurity=usedforsecurity)
+            hasher.update(b'wrong')
             return hasher
 
         obj = b'uvarovite-esurience-cerated-symphysic'
@@ -6848,7 +6851,7 @@ class BaseTestECObjectController(BaseTestObjectController):
         commit_confirmation = \
             'swift.proxy.controllers.obj.MIMEPutter.send_commit_confirmation'
         diskfile_md5 = 'swift.obj.diskfile.md5'
-        mem_diskfile_md5 = 'swift.obj.mem_diskfile.hashlib.md5'
+        mem_diskfile_md5 = 'swift.obj.mem_diskfile.md5'
 
         with mock.patch(diskfile_md5, busted_md5_constructor), \
                 mock.patch(mem_diskfile_md5, busted_md5_constructor), \
@@ -6861,7 +6864,7 @@ class BaseTestECObjectController(BaseTestObjectController):
                       'Content-Length: %d\r\n'
                       'X-Storage-Token: t\r\n'
                       'Content-Type: application/octet-stream\r\n'
-                      '\r\n' % (md5(obj).hexdigest(),
+                      '\r\n' % (md5(obj, usedforsecurity=False).hexdigest(),
                                 len(obj))).encode('ascii'))
             fd.write(obj)
             fd.flush()
@@ -6917,7 +6920,7 @@ class BaseTestECObjectController(BaseTestObjectController):
                       'Content-Length: %d\r\n'
                       'X-Storage-Token: t\r\n'
                       'Content-Type: application/octet-stream\r\n'
-                      '\r\n' % (md5(obj).hexdigest(),
+                      '\r\n' % (md5(obj, usedforsecurity=False).hexdigest(),
                                 len(obj))).encode('ascii'))
             fd.write(obj)
             fd.flush()
@@ -6958,7 +6961,8 @@ class BaseTestECObjectController(BaseTestObjectController):
                   'Content-Length: %d\r\n'
                   'X-Storage-Token: t\r\n'
                   'Content-Type: application/octet-stream\r\n'
-                  '\r\n' % (self.ec_policy.name, md5(obj).hexdigest(),
+                  '\r\n' % (self.ec_policy.name,
+                            md5(obj, usedforsecurity=False).hexdigest(),
                             len(obj))).encode('ascii'))
         fd.write(obj)
         fd.flush()
@@ -6976,7 +6980,8 @@ class BaseTestECObjectController(BaseTestObjectController):
                   'Content-Length: %d\r\n'
                   'X-Storage-Token: t\r\n'
                   'Content-Type: application/octet-stream\r\n'
-                  '\r\n' % (self.ec_policy.name, md5(obj).hexdigest(),
+                  '\r\n' % (self.ec_policy.name,
+                            md5(obj, usedforsecurity=False).hexdigest(),
                             len(obj))).encode('ascii'))
         fd.write(obj)
         fd.flush()
@@ -7022,7 +7027,9 @@ class BaseTestECObjectController(BaseTestObjectController):
 
         headers = parse_headers_string(headers)
         self.assertEqual(str(len(obj)), headers['Content-Length'])
-        self.assertEqual(md5(obj).hexdigest(), headers['Etag'])
+        self.assertEqual(
+            md5(obj, usedforsecurity=False).hexdigest(),
+            headers['Etag'])
         self.assertEqual('chartreuse', headers['X-Object-Meta-Color'])
 
         gotten_obj = b''
@@ -7084,7 +7091,9 @@ class BaseTestECObjectController(BaseTestObjectController):
 
         headers = parse_headers_string(headers)
         self.assertEqual(str(len(obj)), headers['Content-Length'])
-        self.assertEqual(md5(obj).hexdigest(), headers['Etag'])
+        self.assertEqual(
+            md5(obj, usedforsecurity=False).hexdigest(),
+            headers['Etag'])
 
         gotten_obj = b''
         while True:
@@ -7165,7 +7174,9 @@ class BaseTestECObjectController(BaseTestObjectController):
 
             headers = parse_headers_string(headers)
             self.assertEqual(str(len(obj)), headers['Content-Length'])
-            self.assertEqual(md5(obj).hexdigest(), headers['Etag'])
+            self.assertEqual(
+                md5(obj, usedforsecurity=False).hexdigest(),
+                headers['Etag'])
 
             gotten_obj = b''
             try:
@@ -7221,7 +7232,9 @@ class BaseTestECObjectController(BaseTestObjectController):
 
         headers = parse_headers_string(headers)
         self.assertEqual(str(len(obj)), headers['Content-Length'])
-        self.assertEqual(md5(obj).hexdigest(), headers['Etag'])
+        self.assertEqual(
+            md5(obj, usedforsecurity=False).hexdigest(),
+            headers['Etag'])
         self.assertEqual('chartreuse', headers['X-Object-Meta-Color'])
 
         error_lines = prosrv.logger.get_lines_for_level('error')
@@ -7310,7 +7323,8 @@ class BaseTestECObjectController(BaseTestObjectController):
                     obj = b'abCD' * 10
 
                     extra_trans_data = [
-                        'Etag: "%s"\r\n' % md5(obj).hexdigest(),
+                        'Etag: "%s"\r\n' % md5(
+                            obj, usedforsecurity=False).hexdigest(),
                         'Content-Length: %d\r\n' % len(obj),
                         'Content-Type: application/octet-stream\r\n',
                         '\r\n%s' % obj.decode('ascii')
@@ -8214,7 +8228,7 @@ class TestObjectECRangedGET(unittest.TestCase):
             str(s) for s in range(431)).encode('ascii')
         assert seg_size * 4 > len(cls.obj) > seg_size * 3, \
             "object is wrong number of segments"
-        cls.obj_etag = md5(cls.obj).hexdigest()
+        cls.obj_etag = md5(cls.obj, usedforsecurity=False).hexdigest()
         cls.tiny_obj = b'tiny, tiny object'
         assert len(cls.tiny_obj) < seg_size, "tiny_obj too large"