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/* $OpenBSD: mlkem_tests_util.c,v 1.10 2025/08/15 14:47:54 tb Exp $ */
/*
* Copyright (c) 2024 Google Inc.
* Copyright (c) 2024 Bob Beck <beck@obtuse.com>
* Copyright (c) 2024 Theo Buehler <tb@openbsd.org>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <err.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include "mlkem_tests_util.h"
static void
hexdump(const uint8_t *buf, size_t len, const uint8_t *compare)
{
const char *mark = "";
size_t i;
for (i = 1; i <= len; i++) {
if (compare != NULL)
mark = (buf[i - 1] != compare[i - 1]) ? "*" : " ";
fprintf(stderr, " %s0x%02hhx,%s", mark, buf[i - 1],
i % 8 && i != len ? "" : "\n");
}
fprintf(stderr, "\n");
}
int
compare_data(const uint8_t *want, const uint8_t *got, size_t len, const char *msg)
{
if (memcmp(want, got, len) == 0)
return 0;
warnx("FAIL: %s differs", msg);
fprintf(stderr, "want:\n");
hexdump(want, len, got);
fprintf(stderr, "got:\n");
hexdump(got, len, want);
fprintf(stderr, "\n");
return 1;
}
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