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33 lines
1.1 KiB
C++
33 lines
1.1 KiB
C++
/*
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* Copyright (c) Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <vapours.hpp>
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namespace ams::crypto {
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bool IsSameBytes(const void *lhs, const void *rhs, size_t size) {
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/* TODO: Should the generic impl be constant time? */
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volatile u8 diff = 0;
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const volatile u8 *lhs8 = static_cast<const volatile u8 *>(lhs);
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const volatile u8 *rhs8 = static_cast<const volatile u8 *>(rhs);
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for (size_t i = 0; i < size; ++i) {
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diff = diff | (lhs8[i] ^ rhs8[i]);
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}
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return diff == 0;
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}
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} |