FM / Cipher

/opt/alt/python27/lib64/python2.7/site-packages/Crypto/Cipher/

/opt/alt/python27/lib64/python2.7/site-packages/Crypto/Cipher

Name	Size	Mode	Actions
AES.py	4218	0644	edit dl rm
AES.pyc	3567	0644	edit dl rm
AES.pyo	3567	0644	edit dl rm
ARC2.py	4917	0644	edit dl rm
ARC2.pyc	4265	0644	edit dl rm
ARC2.pyo	4265	0644	edit dl rm
ARC4.py	4266	0644	edit dl rm
ARC4.pyc	4059	0644	edit dl rm
ARC4.pyo	4059	0644	edit dl rm
blockalgo.py	12596	0644	edit dl rm
blockalgo.pyc	6307	0644	edit dl rm
blockalgo.pyo	6307	0644	edit dl rm
Blowfish.py	4460	0644	edit dl rm
Blowfish.pyc	3810	0644	edit dl rm
Blowfish.pyo	3810	0644	edit dl rm
CAST.py	4498	0644	edit dl rm
CAST.pyc	3847	0644	edit dl rm
CAST.pyo	3847	0644	edit dl rm
DES.py	4403	0644	edit dl rm
DES.pyc	3738	0644	edit dl rm
DES.pyo	3738	0644	edit dl rm
DES3.py	5130	0644	edit dl rm
DES3.pyc	4481	0644	edit dl rm
DES3.pyo	4481	0644	edit dl rm
PKCS1_OAEP.py	9373	0644	edit dl rm
PKCS1_OAEP.pyc	8649	0644	edit dl rm
PKCS1_OAEP.pyo	8649	0644	edit dl rm
PKCS1_v1_5.py	9103	0644	edit dl rm
PKCS1_v1_5.pyc	9280	0644	edit dl rm
PKCS1_v1_5.pyo	9280	0644	edit dl rm
XOR.py	2737	0644	edit dl rm
XOR.pyc	2531	0644	edit dl rm
XOR.pyo	2531	0644	edit dl rm
_AES.so	63128	0755	edit dl rm
_ARC2.so	44977	0755	edit dl rm
_ARC4.so	28080	0755	edit dl rm
_Blowfish.so	55963	0755	edit dl rm
_CAST.so	57103	0755	edit dl rm
_DES.so	88934	0755	edit dl rm
_DES3.so	89056	0755	edit dl rm
_XOR.so	28428	0755	edit dl rm
__init__.py	3440	0644	edit dl rm
__init__.pyc	2647	0644	edit dl rm
__init__.pyo	2647	0644	edit dl rm

Edit: /opt/alt/python27/lib64/python2.7/site-packages/Crypto/Cipher/Blowfish.py (4460B)

# -*- coding: utf-8 -*-
#
#  Cipher/Blowfish.py : Blowfish
#
# ===================================================================
# 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.
# ===================================================================
"""Blowfish symmetric cipher

Blowfish_ is a symmetric block cipher designed by Bruce Schneier.

It has a fixed data block size of 8 bytes and its keys can vary in length
from 32 to 448 bits (4 to 56 bytes).

Blowfish is deemed secure and it is fast. However, its keys should be chosen
to be big enough to withstand a brute force attack (e.g. at least 16 bytes).

As an example, encryption can be done as follows:

>>> from Crypto.Cipher import Blowfish
    >>> from Crypto import Random
    >>> from struct import pack
    >>>
    >>> bs = Blowfish.block_size
    >>> key = b'An arbitrarily long key'
    >>> iv = Random.new().read(bs)
    >>> cipher = Blowfish.new(key, Blowfish.MODE_CBC, iv)
    >>> plaintext = b'docendo discimus '
    >>> plen = bs - divmod(len(plaintext),bs)[1]
    >>> padding = [plen]*plen
    >>> padding = pack('b'*plen, *padding)
    >>> msg = iv + cipher.encrypt(plaintext + padding)

.. _Blowfish: http://www.schneier.com/blowfish.html

:undocumented: __revision__, __package__
"""

__revision__ = "$Id$"

from Crypto.Cipher import blockalgo
from Crypto.Cipher import _Blowfish

class BlowfishCipher (blockalgo.BlockAlgo):
    """Blowfish cipher object"""

def __init__(self, key, *args, **kwargs):
        """Initialize a Blowfish cipher object
        
        See also `new()` at the module level."""
        blockalgo.BlockAlgo.__init__(self, _Blowfish, key, *args, **kwargs)

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

:Parameters:
      key : byte string
        The secret key to use in the symmetric cipher.
        Its length can vary from 4 to 56 bytes.
    :Keywords:
      mode : a *MODE_** constant
        The chaining mode to use for encryption or decryption.
        Default is `MODE_ECB`.
      IV : byte string
        The initialization vector to use for encryption or decryption.
        
        It is ignored for `MODE_ECB` and `MODE_CTR`.

For `MODE_OPENPGP`, IV must be `block_size` bytes long for encryption
        and `block_size` +2 bytes for decryption (in the latter case, it is
        actually the *encrypted* IV which was prefixed to the ciphertext).
        It is mandatory.
       
        For all other modes, it must be `block_size` bytes longs. It is optional and
        when not present it will be given a default value of all zeroes.
      counter : callable
        (*Only* `MODE_CTR`). A stateful function that returns the next
        *counter block*, which is a byte string of `block_size` bytes.
        For better performance, use `Crypto.Util.Counter`.
      segment_size : integer
        (*Only* `MODE_CFB`).The number of bits the plaintext and ciphertext
        are segmented in.
        It must be a multiple of 8. If 0 or not specified, it will be assumed to be 8.

:Return: a `BlowfishCipher` object
    """
    return BlowfishCipher(key, *args, **kwargs)

#: Electronic Code Book (ECB). See `blockalgo.MODE_ECB`.
MODE_ECB = 1
#: Cipher-Block Chaining (CBC). See `blockalgo.MODE_CBC`.
MODE_CBC = 2
#: Cipher FeedBack (CFB). See `blockalgo.MODE_CFB`.
MODE_CFB = 3
#: This mode should not be used.
MODE_PGP = 4
#: Output FeedBack (OFB). See `blockalgo.MODE_OFB`.
MODE_OFB = 5
#: CounTer Mode (CTR). See `blockalgo.MODE_CTR`.
MODE_CTR = 6
#: OpenPGP Mode. See `blockalgo.MODE_OPENPGP`.
MODE_OPENPGP = 7
#: Size of a data block (in bytes)
block_size = 8
#: Size of a key (in bytes)
key_size = xrange(4,56+1)

cmd: