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src/crypto_common.c
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Andreas Schneider
crypto: Use stdint types and make code more readable of secure_memcmp()
20 июн 2022, 10:18
20 июн 2022, 10:18
65256ad
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/* * This file is part of the SSH Library * * Copyright (c) 2020 by Anderson Toshiyuki Sasaki - Red Hat, Inc. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include "config.h" #include "libssh/crypto.h" int secure_memcmp(const void *s1, const void *s2, size_t n) { size_t i; uint8_t status = 0; const uint8_t *p1 = s1; const uint8_t *p2 = s2; for (i = 0; i < n; i++) { status |= (p1[i] ^ p2[i]); } return (status != 0); }