Gecko [ biogenelab.eu ]

Name	Size	Permission
AES.py	4.03 KB	-rw-r--r--
AES.pyc	3.33 KB	-rw-r--r--
ARC2.py	4.71 KB	-rw-r--r--
ARC2.pyc	4.02 KB	-rw-r--r--
ARC4.py	4.17 KB	-rw-r--r--
ARC4.pyc	3.88 KB	-rw-r--r--
Blowfish.py	4.27 KB	-rw-r--r--
Blowfish.pyc	3.57 KB	-rw-r--r--
CAST.py	4.3 KB	-rw-r--r--
CAST.pyc	3.61 KB	-rw-r--r--
DES.py	4.21 KB	-rw-r--r--
DES.pyc	3.5 KB	-rw-r--r--
DES3.py	4.92 KB	-rw-r--r--
DES3.pyc	4.23 KB	-rw-r--r--
PKCS1_OAEP.py	9.15 KB	-rw-r--r--
PKCS1_OAEP.pyc	8.3 KB	-rw-r--r--
PKCS1_v1_5.py	8.89 KB	-rw-r--r--
PKCS1_v1_5.pyc	8.89 KB	-rw-r--r--
XOR.py	2.67 KB	-rw-r--r--
XOR.pyc	2.38 KB	-rw-r--r--
_AES.x86_64-linux-gnu.so	31.04 KB	-rw-r--r--
_ARC2.x86_64-linux-gnu.so	19.04 KB	-rw-r--r--
_ARC4.x86_64-linux-gnu.so	10.98 KB	-rw-r--r--
_Blowfish.x86_64-linux-gnu.so	23.1 KB	-rw-r--r--
_CAST.x86_64-linux-gnu.so	31.04 KB	-rw-r--r--
_DES.x86_64-linux-gnu.so	55.04 KB	-rw-r--r--
_DES3.x86_64-linux-gnu.so	55.04 KB	-rw-r--r--
_XOR.x86_64-linux-gnu.so	10.98 KB	-rw-r--r--
__init__.py	3.36 KB	-rw-r--r--
__init__.pyc	2.57 KB	-rw-r--r--
blockalgo.py	12.3 KB	-rw-r--r--
blockalgo.pyc	6.04 KB	-rw-r--r--

Code Editor : XOR.py

# -*- coding: utf-8 -*-
#
#  Cipher/XOR.py : XOR
#
# ===================================================================
# The contents of this file are dedicated to the public domain.  To
# the extent that dedication to the public domain is not available,
# everyone is granted a worldwide, perpetual, royalty-free,
# non-exclusive license to exercise all rights associated with the
# contents of this file for any purpose whatsoever.
# No rights are reserved.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
# ===================================================================
"""XOR toy cipher

XOR is one the simplest stream ciphers. Encryption and decryption are
performed by XOR-ing data with a keystream made by contatenating
the key.

Do not use it for real applications!

:undocumented: __revision__, __package__
"""

__revision__ = "$Id$"

from Crypto.Cipher import _XOR

class XORCipher:
    """XOR cipher object"""

def __init__(self, key, *args, **kwargs):
        """Initialize a XOR cipher object
        
        See also `new()` at the module level."""
        self._cipher = _XOR.new(key, *args, **kwargs)
        self.block_size = self._cipher.block_size
        self.key_size = self._cipher.key_size

def encrypt(self, plaintext):
        """Encrypt a piece of data.

:Parameters:
          plaintext : byte string
            The piece of data to encrypt. It can be of any size.
        :Return: the encrypted data (byte string, as long as the
          plaintext).
        """
        return self._cipher.encrypt(plaintext)

def decrypt(self, ciphertext):
        """Decrypt a piece of data.

:Parameters:
          ciphertext : byte string
            The piece of data to decrypt. It can be of any size.
        :Return: the decrypted data (byte string, as long as the
          ciphertext).
        """
        return self._cipher.decrypt(ciphertext)

def new(key, *args, **kwargs):
    """Create a new XOR cipher

:Parameters:
      key : byte string
        The secret key to use in the symmetric cipher.
        Its length may vary from 1 to 32 bytes.

:Return: an `XORCipher` object
    """
    return XORCipher(key, *args, **kwargs)

#: Size of a data block (in bytes)
block_size = 1
#: Size of a key (in bytes)
key_size = xrange(1,32+1)

${this.title}

Code Editor : XOR.py