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-rw-r--r--frozen_deps/Crypto/Random/Fortuna/SHAd256.py98
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diff --git a/frozen_deps/Crypto/Random/Fortuna/SHAd256.py b/frozen_deps/Crypto/Random/Fortuna/SHAd256.py
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--- a/frozen_deps/Crypto/Random/Fortuna/SHAd256.py
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-# -*- coding: ascii -*-
-#
-# Random/Fortuna/SHAd256.py : SHA_d-256 hash function implementation
-#
-# Written in 2008 by Dwayne C. Litzenberger <dlitz@dlitz.net>
-#
-# ===================================================================
-# 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_d-256 hash function implementation.
-
-This module should comply with PEP 247.
-"""
-
-__revision__ = "$Id$"
-__all__ = ['new', 'digest_size']
-
-import sys
-if sys.version_info[0] == 2 and sys.version_info[1] == 1:
- from Crypto.Util.py21compat import *
-from Crypto.Util.py3compat import *
-
-from binascii import b2a_hex
-
-from Crypto.Hash import SHA256
-
-assert SHA256.digest_size == 32
-
-class _SHAd256(object):
- """SHA-256, doubled.
-
- Returns SHA-256(SHA-256(data)).
- """
-
- digest_size = SHA256.digest_size
-
- _internal = object()
-
- def __init__(self, internal_api_check, sha256_hash_obj):
- if internal_api_check is not self._internal:
- raise AssertionError("Do not instantiate this class directly. Use %s.new()" % (__name__,))
- self._h = sha256_hash_obj
-
- # PEP 247 "copy" method
- def copy(self):
- """Return a copy of this hashing object"""
- return _SHAd256(SHAd256._internal, self._h.copy())
-
- # PEP 247 "digest" method
- def digest(self):
- """Return the hash value of this object as a binary string"""
- retval = SHA256.new(self._h.digest()).digest()
- assert len(retval) == 32
- return retval
-
- # PEP 247 "hexdigest" method
- def hexdigest(self):
- """Return the hash value of this object as a (lowercase) hexadecimal string"""
- retval = b2a_hex(self.digest())
- assert len(retval) == 64
- if sys.version_info[0] == 2:
- return retval
- else:
- return retval.decode()
-
- # PEP 247 "update" method
- def update(self, data):
- self._h.update(data)
-
-# PEP 247 module-level "digest_size" variable
-digest_size = _SHAd256.digest_size
-
-# PEP 247 module-level "new" function
-def new(data=None):
- """Return a new SHAd256 hashing object"""
- if not data:
- data=b("")
- sha = _SHAd256(_SHAd256._internal, SHA256.new(data))
- sha.new = globals()['new']
- return sha
-
-# vim:set ts=4 sw=4 sts=4 expandtab: