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d02b48c6 | 1 | /* crypto/bn/exptest.c */ |
58964a49 | 2 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
d02b48c6 RE |
3 | * All rights reserved. |
4 | * | |
5 | * This package is an SSL implementation written | |
6 | * by Eric Young (eay@cryptsoft.com). | |
7 | * The implementation was written so as to conform with Netscapes SSL. | |
8 | * | |
9 | * This library is free for commercial and non-commercial use as long as | |
10 | * the following conditions are aheared to. The following conditions | |
11 | * apply to all code found in this distribution, be it the RC4, RSA, | |
12 | * lhash, DES, etc., code; not just the SSL code. The SSL documentation | |
13 | * included with this distribution is covered by the same copyright terms | |
14 | * except that the holder is Tim Hudson (tjh@cryptsoft.com). | |
15 | * | |
16 | * Copyright remains Eric Young's, and as such any Copyright notices in | |
17 | * the code are not to be removed. | |
18 | * If this package is used in a product, Eric Young should be given attribution | |
19 | * as the author of the parts of the library used. | |
20 | * This can be in the form of a textual message at program startup or | |
21 | * in documentation (online or textual) provided with the package. | |
22 | * | |
23 | * Redistribution and use in source and binary forms, with or without | |
24 | * modification, are permitted provided that the following conditions | |
25 | * are met: | |
26 | * 1. Redistributions of source code must retain the copyright | |
27 | * notice, this list of conditions and the following disclaimer. | |
28 | * 2. Redistributions in binary form must reproduce the above copyright | |
29 | * notice, this list of conditions and the following disclaimer in the | |
30 | * documentation and/or other materials provided with the distribution. | |
31 | * 3. All advertising materials mentioning features or use of this software | |
32 | * must display the following acknowledgement: | |
33 | * "This product includes cryptographic software written by | |
34 | * Eric Young (eay@cryptsoft.com)" | |
35 | * The word 'cryptographic' can be left out if the rouines from the library | |
36 | * being used are not cryptographic related :-). | |
37 | * 4. If you include any Windows specific code (or a derivative thereof) from | |
38 | * the apps directory (application code) you must include an acknowledgement: | |
39 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | |
40 | * | |
41 | * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND | |
42 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
43 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
44 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | |
45 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
46 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
47 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
48 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
49 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
50 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
51 | * SUCH DAMAGE. | |
52 | * | |
53 | * The licence and distribution terms for any publically available version or | |
54 | * derivative of this code cannot be changed. i.e. this code cannot simply be | |
55 | * copied and put under another distribution licence | |
56 | * [including the GNU Public Licence.] | |
57 | */ | |
58 | ||
59 | #include <stdio.h> | |
60 | #include <stdlib.h> | |
61 | #include <string.h> | |
ec577822 BM |
62 | #include <openssl/bio.h> |
63 | #include <openssl/bn.h> | |
64 | #include <openssl/rand.h> | |
65 | #include <openssl/err.h> | |
bc36ee62 | 66 | #ifdef OPENSSL_SYS_WINDOWS |
58964a49 RE |
67 | #include "../bio/bss_file.c" |
68 | #endif | |
d02b48c6 RE |
69 | |
70 | #define NUM_BITS (BN_BITS*2) | |
71 | ||
0c50e02b BM |
72 | static const char rnd_seed[] = "string to make the random number generator think it has entropy"; |
73 | ||
6b691a5c | 74 | int main(int argc, char *argv[]) |
d02b48c6 RE |
75 | { |
76 | BN_CTX *ctx; | |
77 | BIO *out=NULL; | |
78 | int i,ret; | |
79 | unsigned char c; | |
a79b03ce | 80 | BIGNUM *r_mont,*r_recp,*r_simple,*a,*b,*m; |
d02b48c6 | 81 | |
0c50e02b BM |
82 | RAND_seed(rnd_seed, sizeof rnd_seed); /* or BN_rand may fail, and we don't |
83 | * even check its return value | |
84 | * (which we should) */ | |
85 | ||
dfeab068 RE |
86 | ERR_load_BN_strings(); |
87 | ||
d02b48c6 RE |
88 | ctx=BN_CTX_new(); |
89 | if (ctx == NULL) exit(1); | |
90 | r_mont=BN_new(); | |
91 | r_recp=BN_new(); | |
a79b03ce | 92 | r_simple=BN_new(); |
d02b48c6 RE |
93 | a=BN_new(); |
94 | b=BN_new(); | |
95 | m=BN_new(); | |
96 | if ( (r_mont == NULL) || (r_recp == NULL) || | |
97 | (a == NULL) || (b == NULL)) | |
98 | goto err; | |
99 | ||
d02b48c6 | 100 | out=BIO_new(BIO_s_file()); |
58964a49 | 101 | |
d02b48c6 RE |
102 | if (out == NULL) exit(1); |
103 | BIO_set_fp(out,stdout,BIO_NOCLOSE); | |
104 | ||
105 | for (i=0; i<200; i++) | |
106 | { | |
107 | RAND_bytes(&c,1); | |
108 | c=(c%BN_BITS)-BN_BITS2; | |
109 | BN_rand(a,NUM_BITS+c,0,0); | |
110 | ||
111 | RAND_bytes(&c,1); | |
112 | c=(c%BN_BITS)-BN_BITS2; | |
113 | BN_rand(b,NUM_BITS+c,0,0); | |
114 | ||
115 | RAND_bytes(&c,1); | |
116 | c=(c%BN_BITS)-BN_BITS2; | |
117 | BN_rand(m,NUM_BITS+c,0,1); | |
118 | ||
119 | BN_mod(a,a,m,ctx); | |
120 | BN_mod(b,b,m,ctx); | |
121 | ||
58964a49 | 122 | ret=BN_mod_exp_mont(r_mont,a,b,m,ctx,NULL); |
d02b48c6 | 123 | if (ret <= 0) |
dfeab068 RE |
124 | { |
125 | printf("BN_mod_exp_mont() problems\n"); | |
126 | ERR_print_errors(out); | |
127 | exit(1); | |
128 | } | |
d02b48c6 RE |
129 | |
130 | ret=BN_mod_exp_recp(r_recp,a,b,m,ctx); | |
131 | if (ret <= 0) | |
dfeab068 RE |
132 | { |
133 | printf("BN_mod_exp_recp() problems\n"); | |
134 | ERR_print_errors(out); | |
135 | exit(1); | |
136 | } | |
a79b03ce UM |
137 | |
138 | ret=BN_mod_exp_simple(r_simple,a,b,m,ctx); | |
139 | if (ret <= 0) | |
d02b48c6 | 140 | { |
a79b03ce UM |
141 | printf("BN_mod_exp_simple() problems\n"); |
142 | ERR_print_errors(out); | |
143 | exit(1); | |
144 | } | |
145 | ||
146 | if (BN_cmp(r_simple, r_mont) == 0 | |
147 | && BN_cmp(r_simple,r_recp) == 0) | |
148 | { | |
149 | printf("."); | |
150 | fflush(stdout); | |
151 | } | |
152 | else | |
153 | { | |
154 | if (BN_cmp(r_simple,r_mont) != 0) | |
155 | printf("\nsimple and mont results differ\n"); | |
156 | if (BN_cmp(r_simple,r_recp) != 0) | |
157 | printf("\nsimple and recp results differ\n"); | |
158 | ||
d02b48c6 RE |
159 | printf("a (%3d) = ",BN_num_bits(a)); BN_print(out,a); |
160 | printf("\nb (%3d) = ",BN_num_bits(b)); BN_print(out,b); | |
161 | printf("\nm (%3d) = ",BN_num_bits(m)); BN_print(out,m); | |
a79b03ce | 162 | printf("\nsimple ="); BN_print(out,r_simple); |
d02b48c6 RE |
163 | printf("\nrecp ="); BN_print(out,r_recp); |
164 | printf("\nmont ="); BN_print(out,r_mont); | |
165 | printf("\n"); | |
166 | exit(1); | |
167 | } | |
d02b48c6 | 168 | } |
79875776 BM |
169 | BN_free(r_mont); |
170 | BN_free(r_recp); | |
171 | BN_free(r_simple); | |
172 | BN_free(a); | |
173 | BN_free(b); | |
174 | BN_free(m); | |
175 | BN_CTX_free(ctx); | |
29a28ee5 | 176 | ERR_remove_state(0); |
dfeab068 | 177 | CRYPTO_mem_leaks(out); |
79875776 | 178 | BIO_free(out); |
d02b48c6 RE |
179 | printf(" done\n"); |
180 | exit(0); | |
181 | err: | |
182 | ERR_load_crypto_strings(); | |
183 | ERR_print_errors(out); | |
184 | exit(1); | |
185 | return(1); | |
186 | } | |
187 |