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Add nonce and initial_value parameters to CTR mode

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This commit is contained in:
Legrandin 2015-12-20 21:27:21 +01:00
parent 6fc0c734a2
commit c74b718aa6
13 changed files with 210 additions and 71 deletions
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9
lib/Crypto/Cipher/_mode_eax.py
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@ -34,9 +34,8 @@ EAX mode.
__all__ = ['EaxMode']
from Crypto.Util.py3compat import byte_string, bchr, bord, unhexlify
from Crypto.Util.py3compat import byte_string, bchr, bord, unhexlify, b
from Crypto.Util import Counter
from Crypto.Util.strxor import strxor
from Crypto.Util.number import long_to_bytes, bytes_to_long
@ -109,12 +108,10 @@ class EaxMode(object):
# MAC of the nonce is also the initial counter for CTR encryption
counter_int = bytes_to_long(self._omac[0].digest())
counter_obj = Counter.new(
self.block_size * 8,
initial_value=counter_int)
self._cipher = factory.new(key,
factory.MODE_CTR,
counter=counter_obj,
initial_value=counter_int,
nonce=b(""),
**cipher_params)
def update(self, assoc_data):