/usr/share/pyshared/wader/common/aes.py is in python-wader 0.5.12-1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 | # -*- coding: utf-8 -*-
# Copyright (C) 2011 Vodafone España, S.A.
# Author: Andrew Bird
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
"""Replacement for the old aes module"""
from M2Crypto.EVP import Cipher
ALGS = {
16: 'aes_128_cbc',
24: 'aes_192_cbc',
32: 'aes_256_cbc'
}
def decryptData(key, encoded, testforpickle=False):
iv = '\0' * 16
cipher = Cipher(alg=ALGS[len(key)], key=key, iv=iv, op=0)
decoded = cipher.update(encoded)
decoded = decoded + cipher.final()
# old format encryption seems to have 16 bytes before pickled data
if testforpickle and not decoded.startswith('(dp'):
return decoded[16:]
return decoded
def encryptData(key, data):
iv = '\0' * 16
cipher = Cipher(alg=ALGS[len(key)], key=key, iv=iv, op=1)
encoded = cipher.update(data)
encoded = encoded + cipher.final()
return encoded
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