1/*-
2 * Copyright (c) 2003 Poul-Henning Kamp
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD$
27 *
28 * This test checks for inplace decryption working.  This is the case
29 * where the same buffer is passed as input and output to
30 * rijndael_blockDecrypt().
31 */
32
33#include <stdio.h>
34#include <sys/param.h>
35#include <sys/types.h>
36
37#include <crypto/rijndael/rijndael-api-fst.h>
38
39#define LL 32
40int
41main(int argc, char **argv)
42{
43	keyInstance ki;
44	cipherInstance ci;
45	uint8_t key[16];
46	uint8_t in[LL];
47	uint8_t out[LL];
48	int i, j;
49
50	rijndael_cipherInit(&ci, MODE_CBC, NULL);
51	for (i = 0; i < 16; i++)
52		key[i] = i;
53	rijndael_makeKey(&ki, DIR_DECRYPT, 128, key);
54	for (i = 0; i < LL; i++)
55		in[i] = i;
56	rijndael_blockDecrypt(&ci, &ki, in, LL * 8, out);
57	for (i = 0; i < LL; i++)
58		printf("%02x", out[i]);
59	putchar('\n');
60	rijndael_blockDecrypt(&ci, &ki, in, LL * 8, in);
61	j = 0;
62	for (i = 0; i < LL; i++) {
63		printf("%02x", in[i]);
64		if (in[i] != out[i])
65			j++;
66	}
67	putchar('\n');
68	if (j != 0) {
69		fprintf(stderr,
70		    "Error: inplace decryption fails in %d places\n", j);
71		return (1);
72	} else {
73		return (0);
74	}
75}
76