diff options
Diffstat (limited to 'rsa/pkcs1.py')
| -rw-r--r-- | rsa/pkcs1.py | 27 |
1 files changed, 15 insertions, 12 deletions
diff --git a/rsa/pkcs1.py b/rsa/pkcs1.py index 408bc5b..57b0276 100644 --- a/rsa/pkcs1.py +++ b/rsa/pkcs1.py @@ -33,12 +33,6 @@ import typing from . import common, transform, core, key -if sys.version_info < (3, 6): - # Python 3.6 and newer have SHA-3 support. For Python 3.5 we need a third party library. - # This library monkey-patches the hashlib module so that it looks like Python actually - # supports SHA-3 natively. - import sha3 # noqa: F401 - # ASN.1 codes that describe the hash algorithm used. HASH_ASN1 = { 'MD5': b'\x30\x20\x30\x0c\x06\x08\x2a\x86\x48\x86\xf7\x0d\x02\x05\x05\x00\x04\x10', @@ -47,9 +41,6 @@ HASH_ASN1 = { 'SHA-256': b'\x30\x31\x30\x0d\x06\x09\x60\x86\x48\x01\x65\x03\x04\x02\x01\x05\x00\x04\x20', 'SHA-384': b'\x30\x41\x30\x0d\x06\x09\x60\x86\x48\x01\x65\x03\x04\x02\x02\x05\x00\x04\x30', 'SHA-512': b'\x30\x51\x30\x0d\x06\x09\x60\x86\x48\x01\x65\x03\x04\x02\x03\x05\x00\x04\x40', - 'SHA3-256': b'\x30\x31\x30\x0d\x06\x09\x60\x86\x48\x01\x65\x03\x04\x02\x08\x05\x00\x04\x20', - 'SHA3-384': b'\x30\x41\x30\x0d\x06\x09\x60\x86\x48\x01\x65\x03\x04\x02\x09\x05\x00\x04\x30', - 'SHA3-512': b'\x30\x51\x30\x0d\x06\x09\x60\x86\x48\x01\x65\x03\x04\x02\x0a\x05\x00\x04\x40', } HASH_METHODS = { @@ -59,12 +50,24 @@ HASH_METHODS = { 'SHA-256': hashlib.sha256, 'SHA-384': hashlib.sha384, 'SHA-512': hashlib.sha512, - 'SHA3-256': hashlib.sha3_256, - 'SHA3-384': hashlib.sha3_384, - 'SHA3-512': hashlib.sha3_512, } +if sys.version_info >= (3, 6): + # Python 3.6 introduced SHA3 support. + HASH_ASN1.update({ + 'SHA3-256': b'\x30\x31\x30\x0d\x06\x09\x60\x86\x48\x01\x65\x03\x04\x02\x08\x05\x00\x04\x20', + 'SHA3-384': b'\x30\x41\x30\x0d\x06\x09\x60\x86\x48\x01\x65\x03\x04\x02\x09\x05\x00\x04\x30', + 'SHA3-512': b'\x30\x51\x30\x0d\x06\x09\x60\x86\x48\x01\x65\x03\x04\x02\x0a\x05\x00\x04\x40', + }) + + HASH_METHODS.update({ + 'SHA3-256': hashlib.sha3_256, + 'SHA3-384': hashlib.sha3_384, + 'SHA3-512': hashlib.sha3_512, + }) + + class CryptoError(Exception): """Base class for all exceptions in this module.""" |