Created
June 14, 2017 13:16
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#! /usr/bin/env python3 | |
# MIT License | |
# | |
# Copyright (c) 2017 Bugfender | |
# | |
# Permission is hereby granted, free of charge, to any person obtaining a copy | |
# of this software and associated documentation files (the "Software"), to deal | |
# in the Software without restriction, including without limitation the rights | |
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
# copies of the Software, and to permit persons to whom the Software is | |
# furnished to do so, subject to the following conditions: | |
# | |
# The above copyright notice and this permission notice shall be included in all | |
# copies or substantial portions of the Software. | |
# | |
# 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. | |
import hashlib | |
import sys | |
def check_hash(log, orig): | |
# The log entry should be stored in the form of SALT:HASH | |
salt, hash = log.split(":") | |
salt = bytearray.fromhex(salt) | |
new_hash = hashlib.pbkdf2_hmac("sha512", orig.encode("utf-8"), salt, 1000, dklen=64).hex() | |
return new_hash == hash | |
if __name__ == "__main__": | |
if len(sys.argv) != 3: | |
print(sys.argv[0] + " SECRET LOG_ENTRY") | |
sys.exit(1) | |
if check_hash(sys.argv[2], sys.argv[1]): | |
print("hash matches") | |
else: | |
print("hash doesn't match") |
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