merge trunkinitsubsystems

1 files changed, 0 insertions, 396 deletions

diff --git a/libtommath/etc/pprime.c b/libtommath/etc/pprime.c
deleted file mode 100644
index 955f19e..0000000
--- a/libtommath/etc/pprime.c
+++ /dev/null
@@ -1,396 +0,0 @@
-/* Generates provable primes
- *
- * See http://gmail.com:8080/papers/pp.pdf for more info.
- *
- * Tom St Denis, tomstdenis@gmail.com, http://tom.gmail.com
- */
-#include <time.h>
-#include "tommath.h"
-
-int   n_prime;
-FILE *primes;
-
-/* fast square root */
-static  mp_digit
-i_sqrt (mp_word x)
-{
-  mp_word x1, x2;
-
-  x2 = x;
-  do {
-    x1 = x2;
-    x2 = x1 - ((x1 * x1) - x) / (2 * x1);
-  } while (x1 != x2);
-
-  if (x1 * x1 > x) {
-    --x1;
-  }
-
-  return x1;
-}
-
-
-/* generates a prime digit */
-static void gen_prime (void)
-{
-  mp_digit r, x, y, next;
-  FILE *out;
-
-  out = fopen("pprime.dat", "wb");
-
-  /* write first set of primes */
-  r = 3; fwrite(&r, 1, sizeof(mp_digit), out);
-  r = 5; fwrite(&r, 1, sizeof(mp_digit), out);
-  r = 7; fwrite(&r, 1, sizeof(mp_digit), out);
-  r = 11; fwrite(&r, 1, sizeof(mp_digit), out);
-  r = 13; fwrite(&r, 1, sizeof(mp_digit), out);
-  r = 17; fwrite(&r, 1, sizeof(mp_digit), out);
-  r = 19; fwrite(&r, 1, sizeof(mp_digit), out);
-  r = 23; fwrite(&r, 1, sizeof(mp_digit), out);
-  r = 29; fwrite(&r, 1, sizeof(mp_digit), out);
-  r = 31; fwrite(&r, 1, sizeof(mp_digit), out);
-
-  /* get square root, since if 'r' is composite its factors must be < than this */
-  y = i_sqrt (r);
-  next = (y + 1) * (y + 1);
-
-  for (;;) {
-  do {
-    r += 2;			/* next candidate */
-    r &= MP_MASK;
-    if (r < 31) break;
-
-    /* update sqrt ? */
-    if (next <= r) {
-      ++y;
-      next = (y + 1) * (y + 1);
-    }
-
-    /* loop if divisible by 3,5,7,11,13,17,19,23,29  */
-    if ((r % 3) == 0) {
-      x = 0;
-      continue;
-    }
-    if ((r % 5) == 0) {
-      x = 0;
-      continue;
-    }
-    if ((r % 7) == 0) {
-      x = 0;
-      continue;
-    }
-    if ((r % 11) == 0) {
-      x = 0;
-      continue;
-    }
-    if ((r % 13) == 0) {
-      x = 0;
-      continue;
-    }
-    if ((r % 17) == 0) {
-      x = 0;
-      continue;
-    }
-    if ((r % 19) == 0) {
-      x = 0;
-      continue;
-    }
-    if ((r % 23) == 0) {
-      x = 0;
-      continue;
-    }
-    if ((r % 29) == 0) {
-      x = 0;
-      continue;
-    }
-
-    /* now check if r is divisible by x + k={1,7,11,13,17,19,23,29} */
-    for (x = 30; x <= y; x += 30) {
-      if ((r % (x + 1)) == 0) {
-	x = 0;
-	break;
-      }
-      if ((r % (x + 7)) == 0) {
-	x = 0;
-	break;
-      }
-      if ((r % (x + 11)) == 0) {
-	x = 0;
-	break;
-      }
-      if ((r % (x + 13)) == 0) {
-	x = 0;
-	break;
-      }
-      if ((r % (x + 17)) == 0) {
-	x = 0;
-	break;
-      }
-      if ((r % (x + 19)) == 0) {
-	x = 0;
-	break;
-      }
-      if ((r % (x + 23)) == 0) {
-	x = 0;
-	break;
-      }
-      if ((r % (x + 29)) == 0) {
-	x = 0;
-	break;
-      }
-    }
-  } while (x == 0);
-  if (r > 31) { fwrite(&r, 1, sizeof(mp_digit), out); printf("%9d\r", r); fflush(stdout); }
-  if (r < 31) break;
-  }
-
-  fclose(out);
-}
-
-void load_tab(void)
-{
-   primes = fopen("pprime.dat", "rb");
-   if (primes == NULL) {
-      gen_prime();
-      primes = fopen("pprime.dat", "rb");
-   }
-   fseek(primes, 0, SEEK_END);
-   n_prime = ftell(primes) / sizeof(mp_digit);
-}
-
-mp_digit prime_digit(void)
-{
-   int n;
-   mp_digit d;
-
-   n = abs(rand()) % n_prime;
-   fseek(primes, n * sizeof(mp_digit), SEEK_SET);
-   fread(&d, 1, sizeof(mp_digit), primes);
-   return d;
-}
-
-
-/* makes a prime of at least k bits */
-int
-pprime (int k, int li, mp_int * p, mp_int * q)
-{
-  mp_int  a, b, c, n, x, y, z, v;
-  int     res, ii;
-  static const mp_digit bases[] = { 2, 3, 5, 7, 11, 13, 17, 19 };
-
-  /* single digit ? */
-  if (k <= (int) DIGIT_BIT) {
-    mp_set (p, prime_digit ());
-    return MP_OKAY;
-  }
-
-  if ((res = mp_init (&c)) != MP_OKAY) {
-    return res;
-  }
-
-  if ((res = mp_init (&v)) != MP_OKAY) {
-    goto LBL_C;
-  }
-
-  /* product of first 50 primes */
-  if ((res =
-       mp_read_radix (&v,
-		      "19078266889580195013601891820992757757219839668357012055907516904309700014933909014729740190",
-		      10)) != MP_OKAY) {
-    goto LBL_V;
-  }
-
-  if ((res = mp_init (&a)) != MP_OKAY) {
-    goto LBL_V;
-  }
-
-  /* set the prime */
-  mp_set (&a, prime_digit ());
-
-  if ((res = mp_init (&b)) != MP_OKAY) {
-    goto LBL_A;
-  }
-
-  if ((res = mp_init (&n)) != MP_OKAY) {
-    goto LBL_B;
-  }
-
-  if ((res = mp_init (&x)) != MP_OKAY) {
-    goto LBL_N;
-  }
-
-  if ((res = mp_init (&y)) != MP_OKAY) {
-    goto LBL_X;
-  }
-
-  if ((res = mp_init (&z)) != MP_OKAY) {
-    goto LBL_Y;
-  }
-
-  /* now loop making the single digit */
-  while (mp_count_bits (&a) < k) {
-    fprintf (stderr, "prime has %4d bits left\r", k - mp_count_bits (&a));
-    fflush (stderr);
-  top:
-    mp_set (&b, prime_digit ());
-
-    /* now compute z = a * b * 2 */
-    if ((res = mp_mul (&a, &b, &z)) != MP_OKAY) {	/* z = a * b */
-      goto LBL_Z;
-    }
-
-    if ((res = mp_copy (&z, &c)) != MP_OKAY) {	/* c = a * b */
-      goto LBL_Z;
-    }
-
-    if ((res = mp_mul_2 (&z, &z)) != MP_OKAY) {	/* z = 2 * a * b */
-      goto LBL_Z;
-    }
-
-    /* n = z + 1 */
-    if ((res = mp_add_d (&z, 1, &n)) != MP_OKAY) {	/* n = z + 1 */
-      goto LBL_Z;
-    }
-
-    /* check (n, v) == 1 */
-    if ((res = mp_gcd (&n, &v, &y)) != MP_OKAY) {	/* y = (n, v) */
-      goto LBL_Z;
-    }
-
-    if (mp_cmp_d (&y, 1) != MP_EQ)
-      goto top;
-
-    /* now try base x=bases[ii]  */
-    for (ii = 0; ii < li; ii++) {
-      mp_set (&x, bases[ii]);
-
-      /* compute x^a mod n */
-      if ((res = mp_exptmod (&x, &a, &n, &y)) != MP_OKAY) {	/* y = x^a mod n */
-	goto LBL_Z;
-      }
-
-      /* if y == 1 loop */
-      if (mp_cmp_d (&y, 1) == MP_EQ)
-	continue;
-
-      /* now x^2a mod n */
-      if ((res = mp_sqrmod (&y, &n, &y)) != MP_OKAY) {	/* y = x^2a mod n */
-	goto LBL_Z;
-      }
-
-      if (mp_cmp_d (&y, 1) == MP_EQ)
-	continue;
-
-      /* compute x^b mod n */
-      if ((res = mp_exptmod (&x, &b, &n, &y)) != MP_OKAY) {	/* y = x^b mod n */
-	goto LBL_Z;
-      }
-
-      /* if y == 1 loop */
-      if (mp_cmp_d (&y, 1) == MP_EQ)
-	continue;
-
-      /* now x^2b mod n */
-      if ((res = mp_sqrmod (&y, &n, &y)) != MP_OKAY) {	/* y = x^2b mod n */
-	goto LBL_Z;
-      }
-
-      if (mp_cmp_d (&y, 1) == MP_EQ)
-	continue;
-
-      /* compute x^c mod n == x^ab mod n */
-      if ((res = mp_exptmod (&x, &c, &n, &y)) != MP_OKAY) {	/* y = x^ab mod n */
-	goto LBL_Z;
-      }
-
-      /* if y == 1 loop */
-      if (mp_cmp_d (&y, 1) == MP_EQ)
-	continue;
-
-      /* now compute (x^c mod n)^2 */
-      if ((res = mp_sqrmod (&y, &n, &y)) != MP_OKAY) {	/* y = x^2ab mod n */
-	goto LBL_Z;
-      }
-
-      /* y should be 1 */
-      if (mp_cmp_d (&y, 1) != MP_EQ)
-	continue;
-      break;
-    }
-
-    /* no bases worked? */
-    if (ii == li)
-      goto top;
-
-{
-   char buf[4096];
-
-   mp_toradix(&n, buf, 10);
-   printf("Certificate of primality for:\n%s\n\n", buf);
-   mp_toradix(&a, buf, 10);
-   printf("A == \n%s\n\n", buf);
-   mp_toradix(&b, buf, 10);
-   printf("B == \n%s\n\nG == %d\n", buf, bases[ii]);
-   printf("----------------------------------------------------------------\n");
-}
-
-    /* a = n */
-    mp_copy (&n, &a);
-  }
-
-  /* get q to be the order of the large prime subgroup */
-  mp_sub_d (&n, 1, q);
-  mp_div_2 (q, q);
-  mp_div (q, &b, q, NULL);
-
-  mp_exch (&n, p);
-
-  res = MP_OKAY;
-LBL_Z:mp_clear (&z);
-LBL_Y:mp_clear (&y);
-LBL_X:mp_clear (&x);
-LBL_N:mp_clear (&n);
-LBL_B:mp_clear (&b);
-LBL_A:mp_clear (&a);
-LBL_V:mp_clear (&v);
-LBL_C:mp_clear (&c);
-  return res;
-}
-
-
-int
-main (void)
-{
-  mp_int  p, q;
-  char    buf[4096];
-  int     k, li;
-  clock_t t1;
-
-  srand (time (NULL));
-  load_tab();
-
-  printf ("Enter # of bits: \n");
-  fgets (buf, sizeof (buf), stdin);
-  sscanf (buf, "%d", &k);
-
-  printf ("Enter number of bases to try (1 to 8):\n");
-  fgets (buf, sizeof (buf), stdin);
-  sscanf (buf, "%d", &li);
-
-
-  mp_init (&p);
-  mp_init (&q);
-
-  t1 = clock ();
-  pprime (k, li, &p, &q);
-  t1 = clock () - t1;
-
-  printf ("\n\nTook %ld ticks, %d bits\n", t1, mp_count_bits (&p));
-
-  mp_toradix (&p, buf, 10);
-  printf ("P == %s\n", buf);
-  mp_toradix (&q, buf, 10);
-  printf ("Q == %s\n", buf);
-
-  return 0;
-}