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38 lines
973 B
Python
38 lines
973 B
Python
# Author: Hubert Kario (c) 2015
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# see LICENCE file for legal information regarding use of this file
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"""hashlib that handles FIPS mode."""
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import hashlib
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# Re-export commonly used hash constructors
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sha1 = hashlib.sha1
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sha224 = hashlib.sha224
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sha256 = hashlib.sha256
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sha384 = hashlib.sha384
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sha512 = hashlib.sha512
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sha3_224 = hashlib.sha3_224
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sha3_256 = hashlib.sha3_256
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sha3_384 = hashlib.sha3_384
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sha3_512 = hashlib.sha3_512
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blake2b = hashlib.blake2b
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blake2s = hashlib.blake2s
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def _fipsFunction(func, *args, **kwargs):
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"""Make hash function support FIPS mode."""
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try:
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return func(*args, **kwargs)
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except ValueError:
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return func(*args, usedforsecurity=False, **kwargs)
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def md5(*args, **kwargs):
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"""MD5 constructor that works in FIPS mode."""
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return _fipsFunction(hashlib.md5, *args, **kwargs)
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def new(*args, **kwargs):
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"""General constructor that works in FIPS mode."""
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return _fipsFunction(hashlib.new, *args, **kwargs)
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