dhtest.c revision 160815
1/* crypto/dh/dhtest.c */ 2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 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/* Until the key-gen callbacks are modified to use newer prototypes, we allow 60 * deprecated functions for openssl-internal code */ 61#ifdef OPENSSL_NO_DEPRECATED 62#undef OPENSSL_NO_DEPRECATED 63#endif 64 65#include <stdio.h> 66#include <stdlib.h> 67#include <string.h> 68 69#include "../e_os.h" 70 71#include <openssl/crypto.h> 72#include <openssl/bio.h> 73#include <openssl/bn.h> 74#include <openssl/rand.h> 75#include <openssl/err.h> 76 77#ifdef OPENSSL_NO_DH 78int main(int argc, char *argv[]) 79{ 80 printf("No DH support\n"); 81 return(0); 82} 83#else 84#include <openssl/dh.h> 85 86#ifdef OPENSSL_SYS_WIN16 87#define MS_CALLBACK _far _loadds 88#else 89#define MS_CALLBACK 90#endif 91 92static int MS_CALLBACK cb(int p, int n, BN_GENCB *arg); 93 94static const char rnd_seed[] = "string to make the random number generator think it has entropy"; 95 96int main(int argc, char *argv[]) 97 { 98 BN_GENCB _cb; 99 DH *a; 100 DH *b=NULL; 101 char buf[12]; 102 unsigned char *abuf=NULL,*bbuf=NULL; 103 int i,alen,blen,aout,bout,ret=1; 104 BIO *out; 105 106 CRYPTO_malloc_debug_init(); 107 CRYPTO_dbg_set_options(V_CRYPTO_MDEBUG_ALL); 108 CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON); 109 110#ifdef OPENSSL_SYS_WIN32 111 CRYPTO_malloc_init(); 112#endif 113 114 RAND_seed(rnd_seed, sizeof rnd_seed); 115 116 out=BIO_new(BIO_s_file()); 117 if (out == NULL) EXIT(1); 118 BIO_set_fp(out,stdout,BIO_NOCLOSE); 119 120 BN_GENCB_set(&_cb, &cb, out); 121 if(((a = DH_new()) == NULL) || !DH_generate_parameters_ex(a, 64, 122 DH_GENERATOR_5, &_cb)) 123 goto err; 124 125 if (!DH_check(a, &i)) goto err; 126 if (i & DH_CHECK_P_NOT_PRIME) 127 BIO_puts(out, "p value is not prime\n"); 128 if (i & DH_CHECK_P_NOT_SAFE_PRIME) 129 BIO_puts(out, "p value is not a safe prime\n"); 130 if (i & DH_UNABLE_TO_CHECK_GENERATOR) 131 BIO_puts(out, "unable to check the generator value\n"); 132 if (i & DH_NOT_SUITABLE_GENERATOR) 133 BIO_puts(out, "the g value is not a generator\n"); 134 135 BIO_puts(out,"\np ="); 136 BN_print(out,a->p); 137 BIO_puts(out,"\ng ="); 138 BN_print(out,a->g); 139 BIO_puts(out,"\n"); 140 141 b=DH_new(); 142 if (b == NULL) goto err; 143 144 b->p=BN_dup(a->p); 145 b->g=BN_dup(a->g); 146 if ((b->p == NULL) || (b->g == NULL)) goto err; 147 148 /* Set a to run with normal modexp and b to use constant time */ 149 a->flags &= ~DH_FLAG_NO_EXP_CONSTTIME; 150 b->flags |= DH_FLAG_NO_EXP_CONSTTIME; 151 152 if (!DH_generate_key(a)) goto err; 153 BIO_puts(out,"pri 1="); 154 BN_print(out,a->priv_key); 155 BIO_puts(out,"\npub 1="); 156 BN_print(out,a->pub_key); 157 BIO_puts(out,"\n"); 158 159 if (!DH_generate_key(b)) goto err; 160 BIO_puts(out,"pri 2="); 161 BN_print(out,b->priv_key); 162 BIO_puts(out,"\npub 2="); 163 BN_print(out,b->pub_key); 164 BIO_puts(out,"\n"); 165 166 alen=DH_size(a); 167 abuf=(unsigned char *)OPENSSL_malloc(alen); 168 aout=DH_compute_key(abuf,b->pub_key,a); 169 170 BIO_puts(out,"key1 ="); 171 for (i=0; i<aout; i++) 172 { 173 sprintf(buf,"%02X",abuf[i]); 174 BIO_puts(out,buf); 175 } 176 BIO_puts(out,"\n"); 177 178 blen=DH_size(b); 179 bbuf=(unsigned char *)OPENSSL_malloc(blen); 180 bout=DH_compute_key(bbuf,a->pub_key,b); 181 182 BIO_puts(out,"key2 ="); 183 for (i=0; i<bout; i++) 184 { 185 sprintf(buf,"%02X",bbuf[i]); 186 BIO_puts(out,buf); 187 } 188 BIO_puts(out,"\n"); 189 if ((aout < 4) || (bout != aout) || (memcmp(abuf,bbuf,aout) != 0)) 190 { 191 fprintf(stderr,"Error in DH routines\n"); 192 ret=1; 193 } 194 else 195 ret=0; 196err: 197 ERR_print_errors_fp(stderr); 198 199 if (abuf != NULL) OPENSSL_free(abuf); 200 if (bbuf != NULL) OPENSSL_free(bbuf); 201 if(b != NULL) DH_free(b); 202 if(a != NULL) DH_free(a); 203 BIO_free(out); 204#ifdef OPENSSL_SYS_NETWARE 205 if (ret) printf("ERROR: %d\n", ret); 206#endif 207 EXIT(ret); 208 return(ret); 209 } 210 211static int MS_CALLBACK cb(int p, int n, BN_GENCB *arg) 212 { 213 char c='*'; 214 215 if (p == 0) c='.'; 216 if (p == 1) c='+'; 217 if (p == 2) c='*'; 218 if (p == 3) c='\n'; 219 BIO_write(arg->arg,&c,1); 220 (void)BIO_flush(arg->arg); 221#ifdef LINT 222 p=n; 223#endif 224 return 1; 225 } 226#endif 227