コード例 #1
0
ファイル: mpiutil.c プロジェクト: suhho1993/TrustedGrub2
/****************
 * Note: This copy function should not interpret the MPI
 *	 but copy it transparently.
 */
gcry_mpi_t
gcry_mpi_copy( gcry_mpi_t a )
{
    int i;
    gcry_mpi_t b;

    if( a && (a->flags & 4) ) {
	void *p = gcry_is_secure(a->d)? gcry_xmalloc_secure( (a->sign+7)/8 )
				     : gcry_xmalloc( (a->sign+7)/8 );
	memcpy( p, a->d, (a->sign+7)/8 );
	b = gcry_mpi_set_opaque( NULL, p, a->sign );
    }
    else if( a ) {
	b = mpi_is_secure(a)? mpi_alloc_secure( a->nlimbs )
			    : mpi_alloc( a->nlimbs );
	b->nlimbs = a->nlimbs;
	b->sign = a->sign;
	b->flags  = a->flags;
	for(i=0; i < b->nlimbs; i++ )
	    b->d[i] = a->d[i];
    }
    else
	b = NULL;
    return b;
}
コード例 #2
0
ファイル: t-sexp.c プロジェクト: hu19891110/libgcrypt
static gcry_mpi_t
hex2mpiopa (const char *string)
{
  char *buffer;
  size_t buflen;
  gcry_mpi_t val;

  buffer = hex2buffer (string, &buflen);
  if (!buffer)
    die ("hex2mpiopa '%s' failed: parser error\n", string);
  val = gcry_mpi_set_opaque (NULL, buffer, buflen*8);
  if (!buffer)
    die ("hex2mpiopa '%s' failed: set_opaque error\n", string);
  return val;
}
コード例 #3
0
ファイル: mpitests.c プロジェクト: 0ndorio/libgcrypt
static void
test_opaque (void)
{
  gcry_mpi_t a;
  char *p;
  unsigned int nbits;

  p = gcry_xstrdup ("This is a test buffer");
  a = gcry_mpi_set_opaque (NULL, p, 21*8+1); /* (a non byte aligned length) */

  if (!gcry_mpi_get_flag (a, GCRYMPI_FLAG_OPAQUE))
    die ("opaque flag not set\n");

  p = gcry_mpi_get_opaque (a, &nbits);
  if (!p)
    die ("gcry_mpi_get_opaque returned NULL\n");
  if (nbits != 21*8+1)
    die ("gcry_mpi_get_opaque returned a changed bit size\n");
  if (strcmp (p, "This is a test buffer"))
    die ("gcry_mpi_get_opaque returned a changed buffer\n");

  if (debug)
    gcry_log_debugmpi ("mpi", a);
  gcry_mpi_release (a);

  p = gcry_xstrdup ("This is a test buffer");
  a = gcry_mpi_set_opaque_copy (NULL, p, 21*8+1);
  gcry_free (p);

  if (!gcry_mpi_get_flag (a, GCRYMPI_FLAG_OPAQUE))
    die ("opaque flag not set\n");

  p = gcry_mpi_get_opaque (a, &nbits);
  if (!p)
    die ("gcry_mpi_get_opaque returned NULL\n");
  if (nbits != 21*8+1)
    die ("gcry_mpi_get_opaque returned a changed bit size\n");
  if (strcmp (p, "This is a test buffer"))
    die ("gcry_mpi_get_opaque returned a changed buffer\n");

  if (debug)
    gcry_log_debugmpi ("mpi", a);

  gcry_mpi_release (a);
}
コード例 #4
0
ファイル: mpiutil.c プロジェクト: suhho1993/TrustedGrub2
/****************
 * This function allocates an MPI which is optimized to hold
 * a value as large as the one given in the argument and allocates it
 * with the same flags as A.
 */
gcry_mpi_t
_gcry_mpi_alloc_like( gcry_mpi_t a )
{
    gcry_mpi_t b;

    if( a && (a->flags & 4) ) {
	int n = (a->sign+7)/8;
	void *p = gcry_is_secure(a->d)? gcry_malloc_secure( n )
				     : gcry_malloc( n );
	memcpy( p, a->d, n );
	b = gcry_mpi_set_opaque( NULL, p, a->sign );
    }
    else if( a ) {
	b = mpi_is_secure(a)? mpi_alloc_secure( a->nlimbs )
			    : mpi_alloc( a->nlimbs );
	b->nlimbs = 0;
	b->sign = 0;
	b->flags = a->flags;
    }
    else
	b = NULL;
    return b;
}
コード例 #5
0
ファイル: mpitests.c プロジェクト: HoraceWeebler/libgcrypt
static void
test_cmp (void)
{
  gpg_error_t rc;
  gcry_mpi_t zero, zero2;
  gcry_mpi_t one;
  gcry_mpi_t two;
  gcry_mpi_t all_ones;
  gcry_mpi_t opa1, opa2;
  gcry_mpi_t opa1s, opa2s;
  gcry_mpi_t opa0, opa02;

  zero = gcry_mpi_new (0);
  zero2= gcry_mpi_set_ui (NULL, 0);
  one  = gcry_mpi_set_ui (NULL, 1);
  two  = gcry_mpi_set_ui (NULL, 2);
  rc = gcry_mpi_scan (&all_ones, GCRYMPI_FMT_USG, ones, sizeof(ones), NULL);
  if (rc)
    die ("scanning number failed at line %d", __LINE__);
  opa0  = gcry_mpi_set_opaque (NULL, gcry_xstrdup ("a"), 0);
  opa02 = gcry_mpi_set_opaque (NULL, gcry_xstrdup ("b"), 0);
  opa1  = gcry_mpi_set_opaque (NULL, gcry_xstrdup ("aaaaaaaaaaaaaaaa"), 16*8);
  opa1s = gcry_mpi_set_opaque (NULL, gcry_xstrdup ("a"), 1*8);
  opa2  = gcry_mpi_set_opaque (NULL, gcry_xstrdup ("bbbbbbbbbbbbbbbb"), 16*8);
  opa2s = gcry_mpi_set_opaque (NULL, gcry_xstrdup ("b"), 1*8);


  /* Single limb test with cmp_ui */
  if (gcry_mpi_cmp_ui (zero, 0))
    fail ("mpi_cmp_ui failed at line %d", __LINE__);
  if (!(gcry_mpi_cmp_ui (zero, 1) < 0))
    fail ("mpi_cmp_ui failed at line %d", __LINE__);
  if (!(gcry_mpi_cmp_ui (zero, (-1)) < 0))
    fail ("mpi_cmp_ui failed at line %d", __LINE__);

  if (gcry_mpi_cmp_ui (two, 2))
    fail ("mpi_cmp_ui failed at line %d", __LINE__);
  if (!(gcry_mpi_cmp_ui (two, 3) < 0))
    fail ("mpi_cmp_ui failed at line %d", __LINE__);
  if (!(gcry_mpi_cmp_ui (two, 1) > 0))
    fail ("mpi_cmp_ui failed at line %d", __LINE__);

  /* Multi limb tests with cmp_ui.  */
  if (!(gcry_mpi_cmp_ui (all_ones, 0) > 0))
    fail ("mpi_cmp_ui failed at line %d", __LINE__);
  if (!(gcry_mpi_cmp_ui (all_ones, (-1)) > 0))
    fail ("mpi_cmp_ui failed at line %d", __LINE__);

  /* Single limb test with cmp */
  if (gcry_mpi_cmp (zero, zero2))
    fail ("mpi_cmp failed at line %d", __LINE__);
  if (!(gcry_mpi_cmp (zero, one) < 0))
    fail ("mpi_cmp failed at line %d", __LINE__);
  if (!(gcry_mpi_cmp (one, zero) > 0))
    fail ("mpi_cmp failed at line %d", __LINE__);

  gcry_mpi_neg (one, one);
  if (!(gcry_mpi_cmp (zero, one) > 0))
    fail ("mpi_cmp failed at line %d", __LINE__);
  if (!(gcry_mpi_cmp (one, zero) < 0))
    fail ("mpi_cmp failed at line %d", __LINE__);
  if (!(gcry_mpi_cmp (one, two) < 0))
    fail ("mpi_cmp failed at line %d", __LINE__);
  gcry_mpi_neg (one, one);

  if (!(gcry_mpi_cmp (one, two) < 0))
    fail ("mpi_cmp failed at line %d", __LINE__);
  if (!(gcry_mpi_cmp (two, one) > 0))
    fail ("mpi_cmp failed at line %d", __LINE__);
  if (!(gcry_mpi_cmp (one, all_ones) < 0))
    fail ("mpi_cmp failed at line %d", __LINE__);

  /* Tests with opaque values.  */
  if (!(gcry_mpi_cmp (opa1, one) < 0))
    fail ("mpi_cmp failed at line %d", __LINE__);
  if (!(gcry_mpi_cmp (one, opa1) > 0))
    fail ("mpi_cmp failed at line %d", __LINE__);
  if (!(gcry_mpi_cmp (opa0, opa02) == 0))
    fail ("mpi_cmp failed at line %d", __LINE__);
  if (!(gcry_mpi_cmp (opa1s, opa1) < 0))
    fail ("mpi_cmp failed at line %d", __LINE__);
  if (!(gcry_mpi_cmp (opa2, opa1s) > 0))
    fail ("mpi_cmp failed at line %d", __LINE__);
  if (!(gcry_mpi_cmp (opa1, opa2) < 0))
    fail ("mpi_cmp failed at line %d", __LINE__);
  if (!(gcry_mpi_cmp (opa2, opa1) > 0))
    fail ("mpi_cmp failed at line %d", __LINE__);
  if (!(gcry_mpi_cmp (opa1, opa1) == 0))
    fail ("mpi_cmp failed at line %d", __LINE__);


  gcry_mpi_release(opa2s);
  gcry_mpi_release(opa2);
  gcry_mpi_release(opa1s);
  gcry_mpi_release(opa1);
  gcry_mpi_release(opa02);
  gcry_mpi_release(opa0);
  gcry_mpi_release(all_ones);
  gcry_mpi_release(two);
  gcry_mpi_release(one);
  gcry_mpi_release(zero2);
  gcry_mpi_release(zero);
}