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/* $OpenBSD: mlkem768_keygen_tests.c,v 1.4 2024/12/17 07:20:10 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 <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <openssl/bytestring.h>
#include <openssl/mlkem.h>
#include "mlkem_internal.h"
#include "mlkem_tests_util.h"
static int
encode_private_key(const struct MLKEM768_private_key *priv, uint8_t **out_buf,
size_t *out_len)
{
CBB cbb;
if (!CBB_init(&cbb, MLKEM768_PUBLIC_KEY_BYTES))
return 0;
if (!MLKEM768_marshal_private_key(&cbb, priv))
return 0;
if (!CBB_finish(&cbb, out_buf, out_len))
return 0;
CBB_cleanup(&cbb);
return 1;
}
static void
MlkemKeygenFileTest(CBS *seed, CBS *public_key, CBS *private_key)
{
struct MLKEM768_private_key priv;
uint8_t *encoded_private_key = NULL;
uint8_t encoded_public_key[MLKEM768_PUBLIC_KEY_BYTES];
size_t len;
TEST(CBS_len(seed) != MLKEM_SEED_BYTES, "seed len bogus");
TEST(CBS_len(private_key) != MLKEM768_PRIVATE_KEY_BYTES,
"expected private key len bogus");
TEST(CBS_len(public_key) != MLKEM768_PUBLIC_KEY_BYTES,
"expected public key len bogus");
MLKEM768_generate_key_external_entropy(encoded_public_key, &priv,
CBS_data(seed));
TEST(!encode_private_key(&priv, &encoded_private_key,
&len), "encode_private_key");
TEST(len != MLKEM768_PRIVATE_KEY_BYTES, "private key len bogus");
TEST_DATAEQ(encoded_public_key, CBS_data(public_key),
MLKEM768_PUBLIC_KEY_BYTES, "public key");
TEST_DATAEQ(encoded_private_key, CBS_data(private_key),
MLKEM768_PRIVATE_KEY_BYTES, "private key");
free(encoded_private_key);
}
#define S_START 0
#define S_SEED 1
#define S_PUBLIC_KEY 2
#define S_PRIVATE_KEY 3
int
main(int argc, char **argv)
{
CBS seed, public_key, private_key;
char *buf;
FILE *fp;
int state;
fprintf(stderr, "Testing keygen test vectors in %s\n", argv[1]);
TEST((fp = fopen(argv[1], "r")) == NULL, "can't open test file");
MALLOC(buf, 16*1024);
state = S_SEED;
test_number = 1;
while (fgets(buf, 16*1024, fp) != NULL) {
switch (state) {
case S_START:
if (strcmp(buf, "\n") != 0)
break;
state = S_SEED;
break;
case S_SEED:
if (strncmp(buf, "seed: ", strlen("seed: ")) != 0) {
break;
}
grab_data(&seed, buf, strlen("seed: "));
state = S_PUBLIC_KEY;
break;
case S_PUBLIC_KEY:
if (strncmp(buf, "public_key: ",
strlen("public_key: ")) != 0)
break;
grab_data(&public_key, buf, strlen("public_key: "));
state = S_PRIVATE_KEY;
break;
case S_PRIVATE_KEY:
if (strncmp(buf, "private_key: ",
strlen("private_key: ")) != 0)
break;
grab_data(&private_key, buf, strlen("private_key: "));
state = S_START;
MlkemKeygenFileTest(&seed, &public_key, &private_key);
free((void *)CBS_data(&seed));
free((void *)CBS_data(&public_key));
free((void *)CBS_data(&private_key));
test_number++;
state = S_START;
break;
}
}
free(buf);
fclose(fp);
exit(failure);
}
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