OSX/libsecurity_apple_csp/open_ssl/bn/exptest.c

   1 /*
   2  * Copyright (c) 2000-2001,2011,2014 Apple Inc. All Rights Reserved.
   3  *
   4  * The contents of this file constitute Original Code as defined in and are
   5  * subject to the Apple Public Source License Version 1.2 (the 'License').
   6  * You may not use this file except in compliance with the License. Please obtain
   7  * a copy of the License at http://www.apple.com/publicsource and read it before
   8  * using this file.
   9  *
  10  * This Original Code and all software distributed under the License are
  11  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS
  12  * OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, INCLUDING WITHOUT
  13  * LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
  14  * PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. Please see the License for the
  15  * specific language governing rights and limitations under the License.
  16  */
  17
  18
  19 /* crypto/bn/exptest.c */
  20 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  21  * All rights reserved.
  22  *
  23  * This package is an SSL implementation written
  24  * by Eric Young (eay@cryptsoft.com).
  25  * The implementation was written so as to conform with Netscapes SSL.
  26  *
  27  * This library is free for commercial and non-commercial use as long as
  28  * the following conditions are aheared to.  The following conditions
  29  * apply to all code found in this distribution, be it the RC4, RSA,
  30  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
  31  * included with this distribution is covered by the same copyright terms
  32  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
  33  *
  34  * Copyright remains Eric Young's, and as such any Copyright notices in
  35  * the code are not to be removed.
  36  * If this package is used in a product, Eric Young should be given attribution
  37  * as the author of the parts of the library used.
  38  * This can be in the form of a textual message at program startup or
  39  * in documentation (online or textual) provided with the package.
  40  *
  41  * Redistribution and use in source and binary forms, with or without
  42  * modification, are permitted provided that the following conditions
  43  * are met:
  44  * 1. Redistributions of source code must retain the copyright
  45  *    notice, this list of conditions and the following disclaimer.
  46  * 2. Redistributions in binary form must reproduce the above copyright
  47  *    notice, this list of conditions and the following disclaimer in the
  48  *    documentation and/or other materials provided with the distribution.
  49  * 3. All advertising materials mentioning features or use of this software
  50  *    must display the following acknowledgement:
  51  *    "This product includes cryptographic software written by
  52  *     Eric Young (eay@cryptsoft.com)"
  53  *    The word 'cryptographic' can be left out if the rouines from the library
  54  *    being used are not cryptographic related :-).
  55  * 4. If you include any Windows specific code (or a derivative thereof) from
  56  *    the apps directory (application code) you must include an acknowledgement:
  57  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
  58  *
  59  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
  60  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  61  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  62  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  63  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  64  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  65  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  66  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  67  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  68  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  69  * SUCH DAMAGE.
  70  *
  71  * The licence and distribution terms for any publically available version or
  72  * derivative of this code cannot be changed.  i.e. this code cannot simply be
  73  * copied and put under another distribution licence
  74  * [including the GNU Public Licence.]
  75  */
  76
  77 #include <stdio.h>
  78 #include <stdlib.h>
  79 #include <string.h>
  80 #include <openssl/bio.h>
  81 #include <openssl/bn.h>
  82 #include <openssl/rand.h>
  83 #include <openssl/err.h>
  84 #ifdef WINDOWS
  85 #include "../bio/bss_file.c"
  86 #endif
  87
  88 #define NUM_BITS        (BN_BITS*2)
  89
  90 static const char rnd_seed[] = "string to make the random number generator think it has entropy";
  91
  92 int main(int argc, char *argv[])
  93         {
  94         BN_CTX *ctx;
  95         BIO *out=NULL;
  96         int i,ret;
  97         unsigned char c;
  98         BIGNUM *r_mont,*r_recp,*r_simple,*a,*b,*m;
  99
 100         RAND_seed(rnd_seed, sizeof rnd_seed); /* or BN_rand may fail, and we don't
 101                                                * even check its return value
 102                                                * (which we should) */
 103
 104         ERR_load_BN_strings();
 105
 106         ctx=BN_CTX_new();
 107         if (ctx == NULL) exit(1);
 108         r_mont=BN_new();
 109         r_recp=BN_new();
 110         r_simple=BN_new();
 111         a=BN_new();
 112         b=BN_new();
 113         m=BN_new();
 114         if (    (r_mont == NULL) || (r_recp == NULL) ||
 115                 (a == NULL) || (b == NULL))
 116                 goto err;
 117
 118         out=BIO_new(BIO_s_file());
 119
 120         if (out == NULL) exit(1);
 121         BIO_set_fp(out,stdout,BIO_NOCLOSE);
 122
 123         for (i=0; i<200; i++)
 124                 {
 125                 RAND_bytes(&c,1);
 126                 c=(c%BN_BITS)-BN_BITS2;
 127                 BN_rand(a,NUM_BITS+c,0,0);
 128
 129                 RAND_bytes(&c,1);
 130                 c=(c%BN_BITS)-BN_BITS2;
 131                 BN_rand(b,NUM_BITS+c,0,0);
 132
 133                 RAND_bytes(&c,1);
 134                 c=(c%BN_BITS)-BN_BITS2;
 135                 BN_rand(m,NUM_BITS+c,0,1);
 136
 137                 BN_mod(a,a,m,ctx);
 138                 BN_mod(b,b,m,ctx);
 139
 140                 ret=BN_mod_exp_mont(r_mont,a,b,m,ctx,NULL);
 141                 if (ret <= 0)
 142                         {
 143                         printf("BN_mod_exp_mont() problems\n");
 144                         ERR_print_errors(out);
 145                         exit(1);
 146                         }
 147
 148                 ret=BN_mod_exp_recp(r_recp,a,b,m,ctx);
 149                 if (ret <= 0)
 150                         {
 151                         printf("BN_mod_exp_recp() problems\n");
 152                         ERR_print_errors(out);
 153                         exit(1);
 154                         }
 155
 156                 ret=BN_mod_exp_simple(r_simple,a,b,m,ctx);
 157                 if (ret <= 0)
 158                         {
 159                         printf("BN_mod_exp_simple() problems\n");
 160                         ERR_print_errors(out);
 161                         exit(1);
 162                         }
 163
 164                 if (BN_cmp(r_simple, r_mont) == 0
 165                     && BN_cmp(r_simple,r_recp) == 0)
 166                         {
 167                         printf(".");
 168                         fflush(stdout);
 169                         }
 170                 else
 171                         {
 172                         if (BN_cmp(r_simple,r_mont) != 0)
 173                                 printf("\nsimple and mont results differ\n");
 174                         if (BN_cmp(r_simple,r_recp) != 0)
 175                                 printf("\nsimple and recp results differ\n");
 176
 177                         printf("a (%3d) = ",BN_num_bits(a));   BN_print(out,a);
 178                         printf("\nb (%3d) = ",BN_num_bits(b)); BN_print(out,b);
 179                         printf("\nm (%3d) = ",BN_num_bits(m)); BN_print(out,m);
 180                         printf("\nsimple   ="); BN_print(out,r_simple);
 181                         printf("\nrecp     ="); BN_print(out,r_recp);
 182                         printf("\nmont     ="); BN_print(out,r_mont);
 183                         printf("\n");
 184                         exit(1);
 185                         }
 186                 }
 187         BN_free(r_mont);
 188         BN_free(r_recp);
 189         BN_free(r_simple);
 190         BN_free(a);
 191         BN_free(b);
 192         BN_free(m);
 193         BN_CTX_free(ctx);
 194         ERR_remove_state(0);
 195         CRYPTO_mem_leaks(out);
 196         BIO_free(out);
 197         printf(" done\n");
 198         exit(0);
 199 err:
 200         ERR_load_crypto_strings();
 201         ERR_print_errors(out);
 202         exit(1);
 203         return(1);
 204         }
 205