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# -*- 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-512 cryptographic hash algorithm.

SHA-512 belongs to the SHA-2_ family of cryptographic hashes.
It produces the 512 bit digest of a message.

    >>> from Crypto.Hash import SHA512
    >>>
    >>> h = SHA512.new()
    >>> h.update(b'Hello')
    >>> print h.hexdigest()

*SHA* stands for Secure Hash Algorithm.

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

_revision__ = "$Id$"

__all__ = ['new', 'digest_size', 'SHA512Hash' ]

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

try:
    import hashlib
    hashFactory = hashlib.sha512

except ImportError:
    from Crypto.Hash import _SHA512
    hashFactory = _SHA512

class SHA512Hash(HashAlgo):
    """Class that implements a SHA-512 hash
    
    :undocumented: block_size
    """

    #: ASN.1 Object identifier (OID)::
    #:
    #:  id-sha512    OBJECT IDENTIFIER ::= {
    #:	    joint-iso-itu-t(2)
    #:	    country(16) us(840) organization(1) gov(101) csor(3) nistalgorithm(4) hashalgs(2) 3
    #:  }
    #:
    #: This value uniquely identifies the SHA-512 algorithm.
    oid = b('\x06\x09\x60\x86\x48\x01\x65\x03\x04\x02\x03')

    digest_size = 64
    block_size = 128

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

    def new(self, data=None):
        return SHA512Hash(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 `SHA512Hash.update()`.
        Optional.

    :Return: A `SHA512Hash` object
    """
    return SHA512Hash().new(data)

#: The size of the resulting hash in bytes.
digest_size = SHA512Hash.digest_size

#: The internal block size of the hash algorithm in bytes.
block_size = SHA512Hash.block_size


Filemanager

Name Type Size Permission Actions
__pycache__ Folder 0755
HMAC.py File 7.14 KB 0644
MD2.py File 2.67 KB 0644
MD4.py File 2.65 KB 0644
MD5.py File 2.8 KB 0644
RIPEMD.py File 2.93 KB 0644
SHA.py File 2.77 KB 0644
SHA224.py File 2.78 KB 0644
SHA256.py File 2.79 KB 0644
SHA384.py File 2.79 KB 0644
SHA512.py File 2.78 KB 0644
_MD2.cpython-36m-x86_64-linux-gnu.so File 15.39 KB 0644
_MD4.cpython-36m-x86_64-linux-gnu.so File 15.45 KB 0644
_RIPEMD160.cpython-36m-x86_64-linux-gnu.so File 19.39 KB 0644
_SHA224.cpython-36m-x86_64-linux-gnu.so File 15.39 KB 0644
_SHA256.cpython-36m-x86_64-linux-gnu.so File 15.39 KB 0644
_SHA384.cpython-36m-x86_64-linux-gnu.so File 15.39 KB 0644
_SHA512.cpython-36m-x86_64-linux-gnu.so File 15.39 KB 0644
__init__.py File 2.38 KB 0644
hashalgo.py File 3.89 KB 0644