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File Content: `RIPEMD.py`

# -*- coding: utf-8 -*-
#
# ===================================================================
# 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.
# ===================================================================

"""RIPEMD-160 cryptographic hash algorithm.

RIPEMD-160_ produces the 160 bit digest of a message.

    >>> from Crypto.Hash import RIPEMD
    >>>
    >>> h = RIPEMD.new()
    >>> h.update(b'Hello')
    >>> print h.hexdigest()

RIPEMD-160 stands for RACE Integrity Primitives Evaluation Message Digest
with a 160 bit digest. It was invented by Dobbertin, Bosselaers, and Preneel.

This algorithm is considered secure, although it has not been scrutinized as
extensively as SHA-1. Moreover, it provides an informal security level of just
80bits.

.. _RIPEMD-160: http://homes.esat.kuleuven.be/~bosselae/ripemd160.html
"""

_revision__ = "$Id$"

__all__ = ['new', 'digest_size', 'RIPEMD160Hash' ]

from Crypto.Util.py3compat import *
from Crypto.Hash.hashalgo import HashAlgo

import Crypto.Hash._RIPEMD160 as _RIPEMD160
hashFactory = _RIPEMD160

class RIPEMD160Hash(HashAlgo):
    """Class that implements a RIPMD-160 hash
    
    :undocumented: block_size
    """

    #: ASN.1 Object identifier (OID)::
    #:
    #:  id-ripemd160 OBJECT IDENTIFIER ::= {
    #:      iso(1) identified-organization(3) teletrust(36)
    #:       algorithm(3) hashAlgorithm(2) ripemd160(1)
    #:  }
    #:
    #: This value uniquely identifies the RIPMD-160 algorithm.
    oid = b("\x06\x05\x2b\x24\x03\x02\x01")

    digest_size = 20
    block_size = 64

    def __init__(self, data=None):
        HashAlgo.__init__(self, hashFactory, data)

    def new(self, data=None):
        return RIPEMD160Hash(data)

def new(data=None):
    """Return a fresh instance of the hash object.

    :Parameters:
       data : byte string
        The very first chunk of the message to hash.
        It is equivalent to an early call to `RIPEMD160Hash.update()`.
        Optional.

    :Return: A `RIPEMD160Hash` object
    """
    return RIPEMD160Hash().new(data)

#: The size of the resulting hash in bytes.
digest_size = RIPEMD160Hash.digest_size

#: The internal block size of the hash algorithm in bytes.
block_size = RIPEMD160Hash.block_size

Name	Size	Permission
HMAC.py	7302 bytes	0644
HMAC.pyc	6174 bytes	0644
HMAC.pyo	6174 bytes	0644
MD2.py	2734 bytes	0644
MD2.pyc	2182 bytes	0644
MD2.pyo	2182 bytes	0644
MD4.py	2716 bytes	0644
MD4.pyc	2169 bytes	0644
MD4.pyo	2169 bytes	0644
MD5.py	2863 bytes	0644
MD5.pyc	2214 bytes	0644
MD5.pyo	2214 bytes	0644
RIPEMD.py	3005 bytes	0644
RIPEMD.pyc	2409 bytes	0644
RIPEMD.pyo	2409 bytes	0644
SHA.py	2841 bytes	0644
SHA.pyc	2199 bytes	0644
SHA.pyo	2199 bytes	0644
SHA224.py	2851 bytes	0644
SHA224.pyc	2255 bytes	0644
SHA224.pyo	2255 bytes	0644
SHA256.py	2852 bytes	0644
SHA256.pyc	2255 bytes	0644
SHA256.pyo	2255 bytes	0644
SHA384.py	2853 bytes	0644
SHA384.pyc	2255 bytes	0644
SHA384.pyo	2255 bytes	0644
SHA512.py	2850 bytes	0644
SHA512.pyc	2255 bytes	0644
SHA512.pyo	2255 bytes	0644
_MD2.so	12504 bytes	0755
_MD4.so	16664 bytes	0755
_RIPEMD160.so	16632 bytes	0755
_SHA224.so	12552 bytes	0755
_SHA256.so	12544 bytes	0755
_SHA384.so	16648 bytes	0755
_SHA512.so	16648 bytes	0755
__init__.py	2432 bytes	0644
__init__.pyc	1668 bytes	0644
__init__.pyo	1668 bytes	0644
hashalgo.py	3984 bytes	0644
hashalgo.pyc	3973 bytes	0644
hashalgo.pyo	3973 bytes	0644

File Content: RIPEMD.py

File Content: `RIPEMD.py`