Source code for virgil_crypto.hashes.hash_algorithm

# Copyright (C) 2016-2018 Virgil Security Inc.
#
# Lead Maintainer: Virgil Security Inc. <support@virgilsecurity.com>
#
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
#     (1) Redistributions of source code must retain the above copyright
#     notice, this list of conditions and the following disclaimer.
#
#     (2) Redistributions in binary form must reproduce the above copyright
#     notice, this list of conditions and the following disclaimer in
#     the documentation and/or other materials provided with the
#     distribution.
#
#     (3) Neither the name of the copyright holder nor the names of its
#     contributors may be used to endorse or promote products derived from
#     this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ''AS IS'' AND ANY EXPRESS OR
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
# INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
# STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
# IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.

import virgil_crypto


[docs]class HashAlgorithm(object): """Enumeration containing supported Algorithms"""
[docs] class UnknownAlgorithmException(Exception): """Exception raised when Unknown Algorithm passed to convertion method""" def __init__(self, algorithm): super(HashAlgorithm.UnknownAlgorithmException, self).__init__(algorithm) self.algorithm = algorithm def __str__(self): return "KeyPairType not found: %i" % self.algorithm
MD5 = 0 SHA1 = 1 SHA224 = 2 SHA256 = 3 SHA384 = 4 SHA512 = 5 _ALGORITHMS_TO_NATIVE = { MD5: virgil_crypto.VirgilHash.Algorithm_MD5, SHA1: virgil_crypto.VirgilHash.Algorithm_SHA1, SHA224: virgil_crypto.VirgilHash.Algorithm_SHA224, SHA256: virgil_crypto.VirgilHash.Algorithm_SHA256, SHA384: virgil_crypto.VirgilHash.Algorithm_SHA384, SHA512: virgil_crypto.VirgilHash.Algorithm_SHA512, }
[docs] @classmethod def convert_to_native(cls, algorithm): # type: (int) -> int """Converts algorithm enum value to native value Args: algorithm: algorithm for conversion. Returns: Native library algorithm id. Raises: UnknownAlgorithmException: if algorithm is not supported. """ if algorithm in cls._ALGORITHMS_TO_NATIVE: return cls._ALGORITHMS_TO_NATIVE[algorithm] raise cls.UnknownAlgorithmException(algorithm)