unleashed-firmware/applications/external/totp/services/hmac/memxor.h
2023-03-15 01:25:18 +03:00

28 lines
1.2 KiB
C

/* memxor.h -- perform binary exclusive OR operation on memory blocks.
Copyright (C) 2005 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software Foundation,
Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
/* Written by Simon Josefsson. The interface was inspired by memxor
in Niels Möller's Nettle. */
#pragma once
#include <stddef.h>
/* Compute binary exclusive OR of memory areas DEST and SRC, putting
the result in DEST, of length N bytes. Returns a pointer to
DEST. */
void* memxor(void* /*restrict*/ dest, const void* /*restrict*/ src, size_t n);