#include "crypt-port.h"
#include "alg-sha512.h"

#include <stdio.h>

#if INCLUDE_sha512

static const struct
{
  const char *input;
  const char result[64];
} tests[] =
{
  /* Test vectors from FIPS 180-2: appendix C.1.  */
  {
    "abc",
    "\xdd\xaf\x35\xa1\x93\x61\x7a\xba\xcc\x41\x73\x49\xae\x20\x41\x31"
    "\x12\xe6\xfa\x4e\x89\xa9\x7e\xa2\x0a\x9e\xee\xe6\x4b\x55\xd3\x9a"
    "\x21\x92\x99\x2a\x27\x4f\xc1\xa8\x36\xba\x3c\x23\xa3\xfe\xeb\xbd"
    "\x45\x4d\x44\x23\x64\x3c\xe8\x0e\x2a\x9a\xc9\x4f\xa5\x4c\xa4\x9f"
  },
  /* Test vectors from FIPS 180-2: appendix C.2.  */
  {
    "abcdefghbcdefghicdefghijdefghijkefghijklfghijklmghijklmn"
    "hijklmnoijklmnopjklmnopqklmnopqrlmnopqrsmnopqrstnopqrstu",
    "\x8e\x95\x9b\x75\xda\xe3\x13\xda\x8c\xf4\xf7\x28\x14\xfc\x14\x3f"
    "\x8f\x77\x79\xc6\xeb\x9f\x7f\xa1\x72\x99\xae\xad\xb6\x88\x90\x18"
    "\x50\x1d\x28\x9e\x49\x00\xf7\xe4\x33\x1b\x99\xde\xc4\xb5\x43\x3a"
    "\xc7\xd3\x29\xee\xb6\xdd\x26\x54\x5e\x96\xe5\x5b\x87\x4b\xe9\x09"
  },
  /* Test vectors from the NESSIE project.  */
  {
    "",
    "\xcf\x83\xe1\x35\x7e\xef\xb8\xbd\xf1\x54\x28\x50\xd6\x6d\x80\x07"
    "\xd6\x20\xe4\x05\x0b\x57\x15\xdc\x83\xf4\xa9\x21\xd3\x6c\xe9\xce"
    "\x47\xd0\xd1\x3c\x5d\x85\xf2\xb0\xff\x83\x18\xd2\x87\x7e\xec\x2f"
    "\x63\xb9\x31\xbd\x47\x41\x7a\x81\xa5\x38\x32\x7a\xf9\x27\xda\x3e"
  },
  {
    "a",
    "\x1f\x40\xfc\x92\xda\x24\x16\x94\x75\x09\x79\xee\x6c\xf5\x82\xf2"
    "\xd5\xd7\xd2\x8e\x18\x33\x5d\xe0\x5a\xbc\x54\xd0\x56\x0e\x0f\x53"
    "\x02\x86\x0c\x65\x2b\xf0\x8d\x56\x02\x52\xaa\x5e\x74\x21\x05\x46"
    "\xf3\x69\xfb\xbb\xce\x8c\x12\xcf\xc7\x95\x7b\x26\x52\xfe\x9a\x75"
  },
  {
    "message digest",
    "\x10\x7d\xbf\x38\x9d\x9e\x9f\x71\xa3\xa9\x5f\x6c\x05\x5b\x92\x51"
    "\xbc\x52\x68\xc2\xbe\x16\xd6\xc1\x34\x92\xea\x45\xb0\x19\x9f\x33"
    "\x09\xe1\x64\x55\xab\x1e\x96\x11\x8e\x8a\x90\x5d\x55\x97\xb7\x20"
    "\x38\xdd\xb3\x72\xa8\x98\x26\x04\x6d\xe6\x66\x87\xbb\x42\x0e\x7c"
  },
  {
    "abcdefghijklmnopqrstuvwxyz",
    "\x4d\xbf\xf8\x6c\xc2\xca\x1b\xae\x1e\x16\x46\x8a\x05\xcb\x98\x81"
    "\xc9\x7f\x17\x53\xbc\xe3\x61\x90\x34\x89\x8f\xaa\x1a\xab\xe4\x29"
    "\x95\x5a\x1b\xf8\xec\x48\x3d\x74\x21\xfe\x3c\x16\x46\x61\x3a\x59"
    "\xed\x54\x41\xfb\x0f\x32\x13\x89\xf7\x7f\x48\xa8\x79\xc7\xb1\xf1"
  },
  {
    "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq",
    "\x20\x4a\x8f\xc6\xdd\xa8\x2f\x0a\x0c\xed\x7b\xeb\x8e\x08\xa4\x16"
    "\x57\xc1\x6e\xf4\x68\xb2\x28\xa8\x27\x9b\xe3\x31\xa7\x03\xc3\x35"
    "\x96\xfd\x15\xc1\x3b\x1b\x07\xf9\xaa\x1d\x3b\xea\x57\x78\x9c\xa0"
    "\x31\xad\x85\xc7\xa7\x1d\xd7\x03\x54\xec\x63\x12\x38\xca\x34\x45"
  },
  {
    "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789",
    "\x1e\x07\xbe\x23\xc2\x6a\x86\xea\x37\xea\x81\x0c\x8e\xc7\x80\x93"
    "\x52\x51\x5a\x97\x0e\x92\x53\xc2\x6f\x53\x6c\xfc\x7a\x99\x96\xc4"
    "\x5c\x83\x70\x58\x3e\x0a\x78\xfa\x4a\x90\x04\x1d\x71\xa4\xce\xab"
    "\x74\x23\xf1\x9c\x71\xb9\xd5\xa3\xe0\x12\x49\xf0\xbe\xbd\x58\x94"
  },
  {
    "123456789012345678901234567890123456789012345678901234567890"
    "12345678901234567890",
    "\x72\xec\x1e\xf1\x12\x4a\x45\xb0\x47\xe8\xb7\xc7\x5a\x93\x21\x95"
    "\x13\x5b\xb6\x1d\xe2\x4e\xc0\xd1\x91\x40\x42\x24\x6e\x0a\xec\x3a"
    "\x23\x54\xe0\x93\xd7\x6f\x30\x48\xb4\x56\x76\x43\x46\x90\x0c\xb1"
    "\x30\xd2\xa4\xfd\x5d\xd1\x6a\xbb\x5e\x30\xbc\xb8\x50\xde\xe8\x43"
  }
};


static void
report_failure(int n, const char *tag,
               const char expected[64], const char actual[64])
{
  int i;
  printf ("FAIL: test %d (%s):\n  exp:", n, tag);
  for (i = 0; i < 64; i++)
    {
      if (i == 32)
        printf ("\n         ");
      else if (i % 4 == 0)
        putchar (' ');
      printf ("%02x", (unsigned int)(unsigned char)expected[i]);
    }
  printf ("\n  got:");
  for (i = 0; i < 64; i++)
    {
      if (i == 32)
        printf ("\n         ");
      else if (i % 4 == 0)
        putchar (' ');
      printf ("%02x", (unsigned int)(unsigned char)actual[i]);
    }
  putchar ('\n');
  putchar ('\n');
}

int
main (void)
{
  struct sha512_ctx ctx;
  char sum[64];
  int result = 0;
  int cnt;
  int i;

  for (cnt = 0; cnt < (int) ARRAY_SIZE (tests); ++cnt)
    {
      sha512_init_ctx (&ctx);
      sha512_process_bytes (tests[cnt].input, strlen (tests[cnt].input),
                            &ctx);
      sha512_finish_ctx (&ctx, sum);
      if (memcmp (tests[cnt].result, sum, 64) != 0)
        {
          report_failure (cnt, "all at once", tests[cnt].result, sum);
          result = 1;
        }

      sha512_init_ctx (&ctx);
      for (i = 0; tests[cnt].input[i] != '\0'; ++i)
        sha512_process_bytes (&tests[cnt].input[i], 1, &ctx);
      sha512_finish_ctx (&ctx, sum);
      if (memcmp (tests[cnt].result, sum, 64) != 0)
        {
          report_failure (cnt, "byte by byte", tests[cnt].result, sum);
          result = 1;
        }
    }

  /* Test vector from FIPS 180-2: appendix C.3.  */
  char buf[1000];
  memset (buf, 'a', sizeof (buf));
  sha512_init_ctx (&ctx);
  for (i = 0; i < 1000; ++i)
    sha512_process_bytes (buf, sizeof (buf), &ctx);
  sha512_finish_ctx (&ctx, sum);
  static const char expected[64] =
    "\xe7\x18\x48\x3d\x0c\xe7\x69\x64\x4e\x2e\x42\xc7\xbc\x15\xb4\x63"
    "\x8e\x1f\x98\xb1\x3b\x20\x44\x28\x56\x32\xa8\x03\xaf\xa9\x73\xeb"
    "\xde\x0f\xf2\x44\x87\x7e\xa6\x0a\x4c\xb0\x43\x2c\xe5\x77\xc3\x1b"
    "\xeb\x00\x9c\x5c\x2c\x49\xaa\x2e\x4e\xad\xb2\x17\xad\x8c\xc0\x9b";
  if (memcmp (expected, sum, 64) != 0)
    {
      report_failure (cnt, "block by block", expected, sum);
      result = 1;
    }

  return result;
}

#else

int
main (void)
{
  return 77; /* UNSUPPORTED */
}

#endif
