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/* $OpenBSD: mlkem_tests_util.c,v 1.2 2024/12/14 19:16:24 tb Exp $ */
/*
* Copyright (c) 2024, Google Inc.
* Copyright (c) 2024, Bob Beck <beck@obtuse.com>
*
* 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 <stdlib.h>
#include <string.h>
#include "mlkem_tests_util.h"
int failure;
int test_number;
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
hex_decode(char *buf, size_t len, uint8_t **out_buf, size_t *out_len)
{
size_t i;
if (*out_buf != NULL)
abort(); /* Du hast einin rotweinflarsche... */
MALLOC(*out_buf, len);
*out_len = 0;
for (i = 0; i < len; i += 2) {
if (sscanf(buf + i, "%2hhx", *out_buf + *out_len) != 1)
err(1, "FAIL- hex decode failed for %d\n",
(int)*out_len);
(*out_len)++;
}
return 1;
}
void
grab_data(CBS *cbs, char *buf, size_t offset)
{
char *start = buf + offset;
size_t len = strlen(start);
uint8_t *new = NULL;
size_t new_len = 0;
/* This is hex encoded - decode it. */
TEST(!hex_decode(start, len - 1, &new, &new_len), "hex decode failed");
CBS_init(cbs, new, new_len);
}
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