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Diffstat (limited to 'frozen_deps/Crypto/Random/Fortuna/SHAd256.py')
-rw-r--r-- | frozen_deps/Crypto/Random/Fortuna/SHAd256.py | 98 |
1 files changed, 0 insertions, 98 deletions
diff --git a/frozen_deps/Crypto/Random/Fortuna/SHAd256.py b/frozen_deps/Crypto/Random/Fortuna/SHAd256.py deleted file mode 100644 index 2e135c9..0000000 --- a/frozen_deps/Crypto/Random/Fortuna/SHAd256.py +++ /dev/null @@ -1,98 +0,0 @@ -# -*- 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: |