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📄 HMAC.py(7.13 KB)
📄 HMAC.pyc(6.06 KB)
📄 HMAC.pyo(6.06 KB)
📄 MD2.py(2.67 KB)
📄 MD2.pyc(2.13 KB)
📄 MD2.pyo(2.13 KB)
📄 MD4.py(2.65 KB)
📄 MD4.pyc(2.12 KB)
📄 MD4.pyo(2.12 KB)
📄 MD5.py(2.8 KB)
📄 MD5.pyc(2.16 KB)
📄 MD5.pyo(2.16 KB)
📄 RIPEMD.py(2.93 KB)
📄 RIPEMD.pyc(2.35 KB)
📄 RIPEMD.pyo(2.35 KB)
📄 SHA.py(2.77 KB)
📄 SHA.pyc(2.15 KB)
📄 SHA.pyo(2.15 KB)
📄 SHA224.py(2.78 KB)
📄 SHA224.pyc(2.2 KB)
📄 SHA224.pyo(2.2 KB)
📄 SHA256.py(2.79 KB)
📄 SHA256.pyc(2.2 KB)
📄 SHA256.pyo(2.2 KB)
📄 SHA384.py(2.79 KB)
📄 SHA384.pyc(2.2 KB)
📄 SHA384.pyo(2.2 KB)
📄 SHA512.py(2.78 KB)
📄 SHA512.pyc(2.2 KB)
📄 SHA512.pyo(2.2 KB)
📄 _MD2.so(29.11 KB)
📄 _MD4.so(32.98 KB)
📄 _RIPEMD160.so(37.82 KB)
📄 _SHA224.so(32.4 KB)
📄 _SHA256.so(32.4 KB)
📄 _SHA384.so(32.38 KB)
📄 _SHA512.so(32.38 KB)
📄 __init__.py(2.38 KB)
📄 __init__.pyc(1.63 KB)
📄 __init__.pyo(1.63 KB)
📄 hashalgo.py(3.89 KB)
📄 hashalgo.pyc(3.88 KB)
📄 hashalgo.pyo(3.88 KB)

Editing: SHA.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.
# ===================================================================

"""SHA-1 cryptographic hash algorithm.

SHA-1_ produces the 160 bit digest of a message.

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

*SHA* stands for Secure Hash Algorithm.

This algorithm is not considered secure. Do not use it for new designs.

.. _SHA-1: http://csrc.nist.gov/publications/fips/fips180-2/fips180-2.pdf
"""

_revision__ = "$Id$"

__all__ = ['new', 'digest_size', 'SHA1Hash' ]

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

try:
    # The sha module is deprecated in Python 2.6, so use hashlib when possible.
    import hashlib
    hashFactory = hashlib.sha1

except ImportError:
    import sha
    hashFactory = sha

class SHA1Hash(HashAlgo):
    """Class that implements a SHA-1 hash
    
    :undocumented: block_size
    """

#: ASN.1 Object identifier (OID)::
    #:
    #:  id-sha1    OBJECT IDENTIFIER ::= {
    #:      iso(1) identified-organization(3) oiw(14) secsig(3)
    #:       algorithms(2) 26
    #:  }
    #:
    #: This value uniquely identifies the SHA-1 algorithm.
    oid = b('\x06\x05\x2b\x0e\x03\x02\x1a')

digest_size = 20
    block_size = 64

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

def new(self, data=None):
        return SHA1Hash(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 `SHA1Hash.update()`.
        Optional.

:Return: A `SHA1Hash` object
    """
    return SHA1Hash().new(data)

#: The size of the resulting hash in bytes.
digest_size = SHA1Hash.digest_size

#: The internal block size of the hash algorithm in bytes.
block_size = SHA1Hash.block_size

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