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Support PyCryptodome as alternative to PyCrypto #211

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Support PyCryptodome as alternative to PyCrypto #211

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7 changes: 5 additions & 2 deletions rauth/oauth.py
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Original file line number Diff line number Diff line change
Expand Up @@ -171,7 +171,8 @@ def __init__(self):
from Crypto.Signature import PKCS1_v1_5 as p
self.RSA, self.SHA, self.PKCS1_v1_5 = r, s, p
except ImportError: # pragma: no cover
raise NotImplementedError('PyCrypto is required for ' + self.NAME)
raise NotImplementedError('PyCrypto(dome) is required for '
+ self.NAME)

def sign(self,
consumer_secret,
Expand Down Expand Up @@ -208,7 +209,9 @@ def sign(self,
# resolve the key
if is_basestring(consumer_secret):
consumer_secret = self.RSA.importKey(consumer_secret)
if not isinstance(consumer_secret, self.RSA._RSAobj):
valid_cls = (getattr(self.RSA, '_RSAobj', False)
or getattr(self.RSA, 'RsaKey', False))
if not (valid_cls and isinstance(consumer_secret, valid_cls)):
raise ValueError('invalid consumer_secret')

# hash the string with RSA-SHA1
Expand Down