Remove deprecated cryptography backend param

Signed-off-by: Ivan Kanakarakis <ivan.kanak@gmail.com>

4 files changed, 4 insertions, 11 deletions

diff --git a/setup.cfg b/setup.cfg
index 024030ee..4d47ee35 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -48,7 +48,7 @@ scripts =
     tools/parse_xsd2.py
 python_requires = >=3.6, <4
 install_requires =
-    cryptography >= 1.4
+    cryptography >= 3.1
     defusedxml
     pyOpenSSL
     python-dateutil
diff --git a/src/saml2/cryptography/asymmetric.py b/src/saml2/cryptography/asymmetric.py
index 8cff93af..92dbfbb8 100644
--- a/src/saml2/cryptography/asymmetric.py
+++ b/src/saml2/cryptography/asymmetric.py
@@ -1,6 +1,5 @@
 """This module provides methods for asymmetric cryptography."""
 
-import cryptography.hazmat.backends as _backends
 import cryptography.hazmat.primitives.asymmetric as _asymmetric
 import cryptography.hazmat.primitives.hashes as _hashes
 import cryptography.hazmat.primitives.serialization as _serialization
@@ -8,8 +7,7 @@ import cryptography.hazmat.primitives.serialization as _serialization
 
 def load_pem_private_key(data, password):
     """Load RSA PEM certificate."""
-    key = _serialization.load_pem_private_key(
-        data, password, _backends.default_backend())
+    key = _serialization.load_pem_private_key(data, password)
     return key
 
 
diff --git a/src/saml2/cryptography/pki.py b/src/saml2/cryptography/pki.py
index 8c59fdaf..f385e03d 100644
--- a/src/saml2/cryptography/pki.py
+++ b/src/saml2/cryptography/pki.py
@@ -1,9 +1,8 @@
 """This module provides methods for PKI operations."""
 
-import cryptography.hazmat.backends as _backends
 import cryptography.x509 as _x509
 
 
 def load_pem_x509_certificate(data):
     """Load X.509 PEM certificate."""
-    return _x509.load_pem_x509_certificate(data, _backends.default_backend())
+    return _x509.load_pem_x509_certificate(data)
diff --git a/src/saml2/cryptography/symmetric.py b/src/saml2/cryptography/symmetric.py
index ff73641e..ce0e19ee 100644
--- a/src/saml2/cryptography/symmetric.py
+++ b/src/saml2/cryptography/symmetric.py
@@ -10,7 +10,6 @@ import logging
 from warnings import warn as _warn
 
 import cryptography.fernet as _fernet
-import cryptography.hazmat.backends as _backends
 import cryptography.hazmat.primitives.ciphers as _ciphers
 
 from .errors import SymmetricCryptographyError
@@ -158,10 +157,7 @@ class AESCipher(object):
         except KeyError:
             raise Exception('Unsupported chaining mode: {}'.format(cmode))
 
-        cipher = _ciphers.Cipher(
-                _ciphers.algorithms.AES(self.key),
-                mode(iv),
-                backend=_backends.default_backend())
+        cipher = _ciphers.Cipher(_ciphers.algorithms.AES(self.key), mode(iv))
 
         return cipher, iv