33 lines
1.1 KiB
Python
33 lines
1.1 KiB
Python
########################################################################
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# File name: utils.py
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# This file is part of: aiosasl
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#
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# LICENSE
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Lesser General Public License as
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# published by the Free Software Foundation, either version 3 of the
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# License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public
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# License along with this program. If not, see
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# <http://www.gnu.org/licenses/>.
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#
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########################################################################
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import operator
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def xor_bytes(a: bytes, b: bytes) -> bytes:
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"""
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Calculate the byte wise exclusive of of two :class:`bytes` objects
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of the same length.
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"""
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assert len(a) == len(b)
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return bytes(map(operator.xor, a, b))
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