author | Denis Laxalde <denis.laxalde@logilab.fr> |
Mon, 16 Jun 2014 10:08:32 +0200 | |
changeset 9965 | a8769b752299 |
parent 7879 | 9aae456abab5 |
child 10602 | 4845012cfc8e |
permissions | -rw-r--r-- |
# copyright 2003-2011 LOGILAB S.A. (Paris, FRANCE), all rights reserved. # contact http://www.logilab.fr/ -- mailto:contact@logilab.fr # # This file is part of CubicWeb. # # CubicWeb is free software: you can redistribute it and/or modify it under the # terms of the GNU Lesser General Public License as published by the Free # Software Foundation, either version 2.1 of the License, or (at your option) # any later version. # # CubicWeb 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 Lesser General Public License for more # details. # # You should have received a copy of the GNU Lesser General Public License along # with CubicWeb. If not, see <http://www.gnu.org/licenses/>. """Simple cryptographic routines, based on python-crypto.""" __docformat__ = "restructuredtext en" from pickle import dumps, loads from base64 import b64encode, b64decode from Crypto.Cipher import Blowfish _CYPHERERS = {} def _cypherer(seed): try: return _CYPHERERS[seed] except KeyError: _CYPHERERS[seed] = Blowfish.new(seed, Blowfish.MODE_ECB) return _CYPHERERS[seed] def encrypt(data, seed): string = dumps(data) string = string + '*' * (8 - len(string) % 8) string = b64encode(_cypherer(seed).encrypt(string)) return unicode(string) def decrypt(string, seed): # pickle ignores trailing characters so we do not need to strip them off string = _cypherer(seed).decrypt(b64decode(string)) return loads(string)