/*      $OpenBSD: hmactest.c,v 1.8 2024/05/30 17:01:38 tb Exp $ */
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
 * All rights reserved.
 *
 * This package is an SSL implementation written
 * by Eric Young (eay@cryptsoft.com).
 * The implementation was written so as to conform with Netscapes SSL.
 *
 * This library is free for commercial and non-commercial use as long as
 * the following conditions are aheared to.  The following conditions
 * apply to all code found in this distribution, be it the RC4, RSA,
 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
 * included with this distribution is covered by the same copyright terms
 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
 *
 * Copyright remains Eric Young's, and as such any Copyright notices in
 * the code are not to be removed.
 * If this package is used in a product, Eric Young should be given attribution
 * as the author of the parts of the library used.
 * This can be in the form of a textual message at program startup or
 * in documentation (online or textual) provided with the package.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *    "This product includes cryptographic software written by
 *     Eric Young (eay@cryptsoft.com)"
 *    The word 'cryptographic' can be left out if the rouines from the library
 *    being used are not cryptographic related :-).
 * 4. If you include any Windows specific code (or a derivative thereof) from
 *    the apps directory (application code) you must include an acknowledgement:
 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
 *
 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * The licence and distribution terms for any publically available version or
 * derivative of this code cannot be changed.  i.e. this code cannot simply be
 * copied and put under another distribution licence
 * [including the GNU Public Licence.]
 */

#include <stdio.h>
#include <string.h>
#include <stdlib.h>

#include <openssl/hmac.h>
#ifndef OPENSSL_NO_MD5
#include <openssl/md5.h>
#endif

#ifndef OPENSSL_NO_MD5
static struct test_st {
        unsigned char key[16];
        int key_len;
        unsigned char data[64];
        int data_len;
        unsigned char *digest;
} test[8] = {
        {       "",
                0,
                "More text test vectors to stuff up EBCDIC machines :-)",
                54,
                (unsigned char *)"e9139d1e6ee064ef8cf514fc7dc83e86",
        },
        {       {0x0b,0x0b,0x0b,0x0b,0x0b,0x0b,0x0b,0x0b,
                 0x0b,0x0b,0x0b,0x0b,0x0b,0x0b,0x0b,0x0b,},
                16,
                "Hi There",
                8,
                (unsigned char *)"9294727a3638bb1c13f48ef8158bfc9d",
        },
        {       "Jefe",
                4,
                "what do ya want for nothing?",
                28,
                (unsigned char *)"750c783e6ab0b503eaa86e310a5db738",
        },
        {       {0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,
                 0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,0xaa,},
                16,
                {0xdd,0xdd,0xdd,0xdd,0xdd,0xdd,0xdd,0xdd,
                 0xdd,0xdd,0xdd,0xdd,0xdd,0xdd,0xdd,0xdd,
                 0xdd,0xdd,0xdd,0xdd,0xdd,0xdd,0xdd,0xdd,
                 0xdd,0xdd,0xdd,0xdd,0xdd,0xdd,0xdd,0xdd,
                 0xdd,0xdd,0xdd,0xdd,0xdd,0xdd,0xdd,0xdd,
                 0xdd,0xdd,0xdd,0xdd,0xdd,0xdd,0xdd,0xdd,
                 0xdd,0xdd},
                50,
                (unsigned char *)"56be34521d144c88dbb8c733f0e8b3f6",
        },
        {       "",
                0,
                "My test data",
                12,
                (unsigned char *)"61afdecb95429ef494d61fdee15990cabf0826fc"
        },
        {       "",
                0,
                "My test data",
                12,
                (unsigned char *)"2274b195d90ce8e03406f4b526a47e0787a88a65479938f1a5baa3ce0f079776"
        },
        {       "123456",
                6,
                "My test data",
                12,
                (unsigned char *)"bab53058ae861a7f191abe2d0145cbb123776a6369ee3f9d79ce455667e411dd"
        },
        {       "12345",
                5,
                "My test data again",
                12,
                (unsigned char *)"7dbe8c764c068e3bcd6e6b0fbcd5e6fc197b15bb"
        }
};
#endif

static char *pt(unsigned char *md, unsigned int len);

int
main(int argc, char *argv[])
{
#ifndef OPENSSL_NO_MD5
        int i;
        char *p;
#endif
        int err = 0;
        HMAC_CTX *ctx = NULL, *ctx2 = NULL;
        unsigned char buf[EVP_MAX_MD_SIZE];
        unsigned int len;

#ifdef OPENSSL_NO_MD5
        printf("test skipped: MD5 disabled\n");
#else

        for (i = 0; i < 4; i++) {
                p = pt(HMAC(EVP_md5(),
                        test[i].key, test[i].key_len,
                        test[i].data, test[i].data_len, buf, NULL),
                        MD5_DIGEST_LENGTH);

                if (strcmp(p, (char *)test[i].digest) != 0) {
                        printf("error calculating HMAC on %d entry'\n", i);
                        printf("got %s instead of %s\n", p, test[i].digest);
                        err++;
                } else
                        printf("test %d ok\n", i);
        }
#endif /* OPENSSL_NO_MD5 */

/* test4 */
        if ((ctx = HMAC_CTX_new()) == NULL) {
                printf("HMAC_CTX_init failed (test 4)\n");
                exit(1);
        }
        if (HMAC_Init_ex(ctx, NULL, 0, NULL, NULL)) {
                printf("Should fail to initialise HMAC with empty MD and key (test 4)\n");
                err++;
                goto test5;
        }
        if (HMAC_Update(ctx, test[4].data, test[4].data_len)) {
                printf("Should fail HMAC_Update with ctx not set up (test 4)\n");
                err++;
                goto test5;
        }
        if (HMAC_Init_ex(ctx, NULL, 0, EVP_sha1(), NULL)) {
                printf("Should fail to initialise HMAC with empty key (test 4)\n");
                err++;
                goto test5;
        }
        if (HMAC_Update(ctx, test[4].data, test[4].data_len)) {
                printf("Should fail HMAC_Update with ctx not set up (test 4)\n");
                err++;
                goto test5;
        }
        printf("test 4 ok\n");
 test5:
        HMAC_CTX_reset(ctx);
        if (HMAC_Init_ex(ctx, test[4].key, test[4].key_len, NULL, NULL)) {
                printf("Should fail to initialise HMAC with empty MD (test 5)\n");
                err++;
                goto test6;
        }
        if (HMAC_Update(ctx, test[4].data, test[4].data_len)) {
                printf("Should fail HMAC_Update with ctx not set up (test 5)\n");
                err++;
                goto test6;
        }
        if (HMAC_Init_ex(ctx, test[4].key, -1, EVP_sha1(), NULL)) {
                printf("Should fail to initialise HMAC with invalid key len(test 5)\n");
                err++;
                goto test6;
        }
        if (!HMAC_Init_ex(ctx, test[4].key, test[4].key_len, EVP_sha1(), NULL)) {
                printf("Failed to initialise HMAC (test 5)\n");
                err++;
                goto test6;
        }
        if (!HMAC_Update(ctx, test[4].data, test[4].data_len)) {
                printf("Error updating HMAC with data (test 5)\n");
                err++;
                goto test6;
        }
        if (!HMAC_Final(ctx, buf, &len)) {
                printf("Error finalising data (test 5)\n");
                err++;
                goto test6;
        }
        p = pt(buf, len);
        if (strcmp(p, (char *)test[4].digest) != 0) {
                printf("Error calculating interim HMAC on test 5\n");
                printf("got %s instead of %s\n", p, test[4].digest);
                err++;
                goto test6;
        }
        if (HMAC_Init_ex(ctx, NULL, 0, EVP_sha256(), NULL)) {
                printf("Should disallow changing MD without a new key (test 5)\n");
                err++;
                goto test6;
        }
        if (!HMAC_Init_ex(ctx, test[4].key, test[4].key_len, EVP_sha256(), NULL)) {
                printf("Failed to reinitialise HMAC (test 5)\n");
                err++;
                goto test6;
        }
        if (!HMAC_Update(ctx, test[5].data, test[5].data_len)) {
                printf("Error updating HMAC with data (sha256) (test 5)\n");
                err++;
                goto test6;
        }
        if (!HMAC_Final(ctx, buf, &len)) {
                printf("Error finalising data (sha256) (test 5)\n");
                err++;
                goto test6;
        }
        p = pt(buf, len);
        if (strcmp(p, (char *)test[5].digest) != 0) {
                printf("Error calculating 2nd interim HMAC on test 5\n");
                printf("got %s instead of %s\n", p, test[5].digest);
                err++;
                goto test6;
        }
        if (!HMAC_Init_ex(ctx, test[6].key, test[6].key_len, NULL, NULL)) {
                printf("Failed to reinitialise HMAC with key (test 5)\n");
                err++;
                goto test6;
        }
        if (!HMAC_Update(ctx, test[6].data, test[6].data_len)) {
                printf("Error updating HMAC with data (new key) (test 5)\n");
                err++;
                goto test6;
        }
        if (!HMAC_Final(ctx, buf, &len)) {
                printf("Error finalising data (new key) (test 5)\n");
                err++;
                goto test6;
        }
        p = pt(buf, len);
        if (strcmp(p, (char *)test[6].digest) != 0) {
                printf("error calculating HMAC on test 5\n");
                printf("got %s instead of %s\n", p, test[6].digest);
                err++;
        } else {
                printf("test 5 ok\n");
        }
 test6:
        HMAC_CTX_reset(ctx);
        if (!HMAC_Init_ex(ctx, test[7].key, test[7].key_len, EVP_sha1(), NULL)) {
                printf("Failed to initialise HMAC (test 6)\n");
                err++;
                goto end;
        }
        if (!HMAC_Update(ctx, test[7].data, test[7].data_len)) {
                printf("Error updating HMAC with data (test 6)\n");
                err++;
                goto end;
        }
        if ((ctx2 = HMAC_CTX_new()) == NULL) {
                printf("HMAC_CTX_new failed (test 6)\n");
                exit(1);
        }
        if (!HMAC_CTX_copy(ctx2, ctx)) {
                printf("Failed to copy HMAC_CTX (test 6)\n");
                err++;
                goto end;
        }
        if (!HMAC_Final(ctx2, buf, &len)) {
                printf("Error finalising data (test 6)\n");
                err++;
                goto end;
        }
        p = pt(buf, len);
        if (strcmp(p, (char *)test[7].digest) != 0) {
                printf("Error calculating HMAC on test 6\n");
                printf("got %s instead of %s\n", p, test[7].digest);
                err++;
        } else {
                printf("test 6 ok\n");
        }
end:
        HMAC_CTX_free(ctx);
        HMAC_CTX_free(ctx2);
        exit(err);
        return(0);
}

#ifndef OPENSSL_NO_MD5
static char *
pt(unsigned char *md, unsigned int len)
{
        unsigned int i;
        static char buf[80];

        for (i = 0; i < len; i++)
                snprintf(buf + i * 2, sizeof(buf) - i * 2, "%02x", md[i]);
        return(buf);
}
#endif