/* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
/* lib/crypto/crypto_tests/t_mddriver.c - test driver for MD2, MD4 and MD5 */
/*
 * Copyright (C) 1990-2, RSA Data Security, Inc. Created 1990. All
 * rights reserved.
 *
 * RSA Data Security, Inc. makes no representations concerning either
 * the merchantability of this software or the suitability of this
 * software for any particular purpose. It is provided "as is"
 * without express or implied warranty of any kind.
 *
 * These notices must be retained in any copies of any part of this
 * documentation and/or software.
 */

/* The following makes MD default to MD5 if it has not already been
   defined with C compiler flags.
*/
#ifndef MD
#define MD 5
#endif

#include "crypto_int.h"

/* Length of test block, number of test blocks.
 */
#define TEST_BLOCK_LEN 1000
#define TEST_BLOCK_COUNT 1000

static void MDHash (char *, size_t, size_t, unsigned char *);
static void MDString (char *);
static void MDTimeTrial (void);
static void MDTestSuite (void);
static void MDPrint (unsigned char [16]);

struct md_test_entry {
    char *string;
    unsigned char digest[16];
};

#if MD == 4
#define MDProvider krb5int_hash_md4

#define HAVE_TEST_SUITE
/* Test suite from RFC 1320 */

struct md_test_entry md_test_suite[] = {
    { "",
      {0x31, 0xd6, 0xcf, 0xe0, 0xd1, 0x6a, 0xe9, 0x31,
       0xb7, 0x3c, 0x59, 0xd7, 0xe0, 0xc0, 0x89, 0xc0 }},
    { "a",
      {0xbd, 0xe5, 0x2c, 0xb3, 0x1d, 0xe3, 0x3e, 0x46,
       0x24, 0x5e, 0x05, 0xfb, 0xdb, 0xd6, 0xfb, 0x24 }},
    { "abc",
      {0xa4, 0x48, 0x01, 0x7a, 0xaf, 0x21, 0xd8, 0x52,
       0x5f, 0xc1, 0x0a, 0xe8, 0x7a, 0xa6, 0x72, 0x9d }},
    { "message digest",
      {0xd9, 0x13, 0x0a, 0x81, 0x64, 0x54, 0x9f, 0xe8,
       0x18, 0x87, 0x48, 0x06, 0xe1, 0xc7, 0x01, 0x4b }},
    { "abcdefghijklmnopqrstuvwxyz",
      {0xd7, 0x9e, 0x1c, 0x30, 0x8a, 0xa5, 0xbb, 0xcd,
       0xee, 0xa8, 0xed, 0x63, 0xdf, 0x41, 0x2d, 0xa9 }},
    { "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789",
      {0x04, 0x3f, 0x85, 0x82, 0xf2, 0x41, 0xdb, 0x35,
       0x1c, 0xe6, 0x27, 0xe1, 0x53, 0xe7, 0xf0, 0xe4 }},
    { "12345678901234567890123456789012345678901234567890123456789012345678901234567890",
      {0xe3, 0x3b, 0x4d, 0xdc, 0x9c, 0x38, 0xf2, 0x19,
       0x9c, 0x3e, 0x7b, 0x16, 0x4f, 0xcc, 0x05, 0x36 }},
    {0, {0}}
};

#endif

#if MD == 5
#define MDProvider krb5int_hash_md5

#define HAVE_TEST_SUITE
/* Test suite from RFC 1321 */

struct md_test_entry md_test_suite[] = {
    { "",
      {0xd4, 0x1d, 0x8c, 0xd9, 0x8f, 0x00, 0xb2, 0x04,
       0xe9, 0x80, 0x09, 0x98, 0xec, 0xf8, 0x42, 0x7e }},
    { "a",
      {0x0c, 0xc1, 0x75, 0xb9, 0xc0, 0xf1, 0xb6, 0xa8,
       0x31, 0xc3, 0x99, 0xe2, 0x69, 0x77, 0x26, 0x61 }},
    { "abc",
      {0x90, 0x01, 0x50, 0x98, 0x3c, 0xd2, 0x4f, 0xb0,
       0xd6, 0x96, 0x3f, 0x7d, 0x28, 0xe1, 0x7f, 0x72 }},
    { "message digest",
      {0xf9, 0x6b, 0x69, 0x7d, 0x7c, 0xb7, 0x93, 0x8d,
       0x52, 0x5a, 0x2f, 0x31, 0xaa, 0xf1, 0x61, 0xd0 }},
    { "abcdefghijklmnopqrstuvwxyz",
      {0xc3, 0xfc, 0xd3, 0xd7, 0x61, 0x92, 0xe4, 0x00,
       0x7d, 0xfb, 0x49, 0x6c, 0xca, 0x67, 0xe1, 0x3b }},
    { "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789",
      {0xd1, 0x74, 0xab, 0x98, 0xd2, 0x77, 0xd9, 0xf5,
       0xa5, 0x61, 0x1c, 0x2c, 0x9f, 0x41, 0x9d, 0x9f }},
    { "12345678901234567890123456789012345678901234567890123456789012345678901234567890",
      {0x57, 0xed, 0xf4, 0xa2, 0x2b, 0xe3, 0xc9, 0x55,
       0xac, 0x49, 0xda, 0x2e, 0x21, 0x07, 0xb6, 0x7a }},
    { 0, {0} }
};

#endif

/* Main driver.

   Arguments (may be any combination):
   -sstring - digests string
   -t       - runs time trial
   -x       - runs test script
*/
int
main(int argc, char *argv[])
{
    int i;

    for (i = 1; i < argc; i++) {
        if (argv[i][0] == '-' && argv[i][1] == 's')
            MDString (argv[i] + 2);
        else if (strcmp (argv[i], "-t") == 0)
            MDTimeTrial ();
        else if (strcmp (argv[i], "-x") == 0)
            MDTestSuite ();
    }
    return (0);
}

static void
MDHash(char *bytes, size_t len, size_t count, unsigned char *out)
{
    krb5_crypto_iov *iov;
    krb5_data outdata = make_data (out, MDProvider.hashsize);
    size_t i;

    iov = malloc (count * sizeof(*iov));
    if (iov == NULL)
        abort ();
    for (i = 0; i < count; i++) {
        iov[i].flags = KRB5_CRYPTO_TYPE_DATA;
        iov[i].data = make_data (bytes, len);
    }
    MDProvider.hash(iov, count, &outdata);
    free(iov);
}

/* Digests a string and prints the result.
 */
static void
MDString(char *string)
{
    unsigned char digest[16];

    MDHash (string, strlen(string), 1, digest);
    printf ("MD%d (\"%s\") = ", MD, string);
    MDPrint (digest);
    printf ("\n");
}

/* Measures the time to digest TEST_BLOCK_COUNT TEST_BLOCK_LEN-byte
   blocks.
*/
static void
MDTimeTrial(void)
{
    time_t endTime, startTime;
    unsigned char block[TEST_BLOCK_LEN], digest[16];
    unsigned int i;

    printf("MD%d time trial. Digesting %d %d-byte blocks ...", MD,
           TEST_BLOCK_LEN, TEST_BLOCK_COUNT);

    /* Initialize block */
    for (i = 0; i < TEST_BLOCK_LEN; i++)
        block[i] = (unsigned char)(i & 0xff);

    /* Start timer */
    time (&startTime);

    /* Digest blocks */
    MDHash ((char *)block, TEST_BLOCK_LEN, TEST_BLOCK_COUNT, digest);

    /* Stop timer */
    time (&endTime);

    printf (" done\n");
    printf ("Digest = ");
    MDPrint (digest);
    printf ("\nTime = %ld seconds\n", (long)(endTime-startTime));
    printf
        ("Speed = %ld bytes/second\n",
         (long)TEST_BLOCK_LEN * (long)TEST_BLOCK_COUNT/(endTime-startTime));
}

/* Digests a reference suite of strings and prints the results.
 */
static void
MDTestSuite(void)
{
#ifdef HAVE_TEST_SUITE
    struct md_test_entry *entry;
    int num_tests = 0, num_failed = 0;
    unsigned char digest[16];

    printf ("MD%d test suite:\n\n", MD);
    for (entry = md_test_suite; entry->string; entry++) {
        unsigned int len = strlen (entry->string);

        MDHash (entry->string, len, 1, digest);

        printf ("MD%d (\"%s\") = ", MD, entry->string);
        MDPrint (digest);
        printf ("\n");
        if (memcmp(digest, entry->digest, 16) != 0) {
            printf("\tIncorrect MD%d digest!  Should have been:\n\t\t ", MD);
            MDPrint(entry->digest);
            printf("\n");
            num_failed++;
        }
        num_tests++;
    }
    if (num_failed) {
        printf("%d out of %d tests failed for MD%d!!!\n", num_failed,
               num_tests, MD);
        exit(1);
    } else {
        printf ("%d tests passed successfully for MD%d.\n", num_tests, MD);
        exit(0);
    }
#else

    printf ("MD%d test suite:\n", MD);
    MDString ("");
    MDString ("a");
    MDString ("abc");
    MDString ("message digest");
    MDString ("abcdefghijklmnopqrstuvwxyz");
    MDString
        ("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789");
    MDString
        ("12345678901234567890123456789012345678901234567890123456789012345678901234567890");
#endif
}

/* Prints a message digest in hexadecimal.
 */
static void
MDPrint(unsigned char digest[16])
{
    unsigned int i;

    for (i = 0; i < 16; i++)
        printf ("%02x", digest[i]);
}