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Switched to using some constants the hmac module exposes.

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This commit is contained in:
Alex Gaynor 2013-06-02 10:31:02 -07:00
parent 590a41164e
commit 09d0568697
1 changed files with 2 additions and 6 deletions
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8
django/utils/crypto.py
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@ -28,10 +28,6 @@ from django.utils import six
from django.utils.six.moves import xrange
_trans_5c = bytearray([(x ^ 0x5C) for x in xrange(256)])
_trans_36 = bytearray([(x ^ 0x36) for x in xrange(256)])
def salted_hmac(key_salt, value, secret=None):
"""
Returns the HMAC-SHA1 of 'value', using a key generated from key_salt and a
@ -130,9 +126,9 @@ def _fast_hmac(key, msg, digest):
if len(key) > dig1.block_size:
key = digest(key).digest()
key += b'\x00' * (dig1.block_size - len(key))
dig1.update(key.translate(_trans_36))
dig1.update(key.translate(hmac.trans_36))
dig1.update(msg)
dig2.update(key.translate(_trans_5c))
dig2.update(key.translate(hmac.trans_5C))
dig2.update(dig1.digest())
return dig2