1 /* apps/dsaparam.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 #ifndef NO_DSA 60 #include <stdio.h> 61 #include <stdlib.h> 62 #include <time.h> 63 #include <string.h> 64 #include "apps.h" 65 #include <openssl/bio.h> 66 #include <openssl/err.h> 67 #include <openssl/bn.h> 68 #include <openssl/rand.h> 69 #include <openssl/dsa.h> 70 #include <openssl/x509.h> 71 #include <openssl/pem.h> 72 73 #undef PROG 74 #define PROG dsaparam_main 75 76 /* -inform arg - input format - default PEM (one of DER, TXT or PEM) 77 * -outform arg - output format - default PEM 78 * -in arg - input file - default stdin 79 * -out arg - output file - default stdout 80 * -noout 81 * -text 82 * -C 83 * -noout 84 * -genkey 85 */ 86 87 static void MS_CALLBACK dsa_cb(int p, int n, char *arg); 88 int MAIN(int argc, char **argv) 89 { 90 DSA *dsa=NULL; 91 int i,badops=0,text=0; 92 BIO *in=NULL,*out=NULL; 93 int informat,outformat,noout=0,C=0,ret=1; 94 char *infile,*outfile,*prog,*inrand=NULL; 95 int numbits= -1,num,genkey=0; 96 char buffer[200],*randfile=NULL; 97 98 apps_startup(); 99 100 if (bio_err == NULL) 101 if ((bio_err=BIO_new(BIO_s_file())) != NULL) 102 BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT); 103 104 infile=NULL; 105 outfile=NULL; 106 informat=FORMAT_PEM; 107 outformat=FORMAT_PEM; 108 109 prog=argv[0]; 110 argc--; 111 argv++; 112 while (argc >= 1) 113 { 114 if (strcmp(*argv,"-inform") == 0) 115 { 116 if (--argc < 1) goto bad; 117 informat=str2fmt(*(++argv)); 118 } 119 else if (strcmp(*argv,"-outform") == 0) 120 { 121 if (--argc < 1) goto bad; 122 outformat=str2fmt(*(++argv)); 123 } 124 else if (strcmp(*argv,"-in") == 0) 125 { 126 if (--argc < 1) goto bad; 127 infile= *(++argv); 128 } 129 else if (strcmp(*argv,"-out") == 0) 130 { 131 if (--argc < 1) goto bad; 132 outfile= *(++argv); 133 } 134 else if (strcmp(*argv,"-text") == 0) 135 text=1; 136 else if (strcmp(*argv,"-C") == 0) 137 C=1; 138 else if (strcmp(*argv,"-genkey") == 0) 139 genkey=1; 140 else if (strcmp(*argv,"-rand") == 0) 141 { 142 if (--argc < 1) goto bad; 143 inrand= *(++argv); 144 } 145 else if (strcmp(*argv,"-noout") == 0) 146 noout=1; 147 else if (sscanf(*argv,"%d",&num) == 1) 148 { 149 /* generate a key */ 150 numbits=num; 151 } 152 else 153 { 154 BIO_printf(bio_err,"unknown option %s\n",*argv); 155 badops=1; 156 break; 157 } 158 argc--; 159 argv++; 160 } 161 162 if (badops) 163 { 164 bad: 165 BIO_printf(bio_err,"%s [options] [bits] <infile >outfile\n",prog); 166 BIO_printf(bio_err,"where options are\n"); 167 BIO_printf(bio_err," -inform arg input format - one of DER TXT PEM\n"); 168 BIO_printf(bio_err," -outform arg output format - one of DER TXT PEM\n"); 169 BIO_printf(bio_err," -in arg input file\n"); 170 BIO_printf(bio_err," -out arg output file\n"); 171 BIO_printf(bio_err," -text check the DSA parameters\n"); 172 BIO_printf(bio_err," -C Output C code\n"); 173 BIO_printf(bio_err," -noout no output\n"); 174 BIO_printf(bio_err," -rand files to use for random number input\n"); 175 BIO_printf(bio_err," number number of bits to use for generating private key\n"); 176 goto end; 177 } 178 179 ERR_load_crypto_strings(); 180 181 in=BIO_new(BIO_s_file()); 182 out=BIO_new(BIO_s_file()); 183 if ((in == NULL) || (out == NULL)) 184 { 185 ERR_print_errors(bio_err); 186 goto end; 187 } 188 189 if (infile == NULL) 190 BIO_set_fp(in,stdin,BIO_NOCLOSE); 191 else 192 { 193 if (BIO_read_filename(in,infile) <= 0) 194 { 195 perror(infile); 196 goto end; 197 } 198 } 199 if (outfile == NULL) 200 BIO_set_fp(out,stdout,BIO_NOCLOSE); 201 else 202 { 203 if (BIO_write_filename(out,outfile) <= 0) 204 { 205 perror(outfile); 206 goto end; 207 } 208 } 209 210 if (numbits > 0) 211 { 212 randfile=RAND_file_name(buffer,200); 213 RAND_load_file(randfile,1024L*1024L); 214 215 BIO_printf(bio_err,"Generating DSA parameters, %d bit long prime\n",num); 216 BIO_printf(bio_err,"This could take some time\n"); 217 dsa=DSA_generate_parameters(num,NULL,0,NULL,NULL, 218 dsa_cb,(char *)bio_err); 219 } 220 else if (informat == FORMAT_ASN1) 221 dsa=d2i_DSAparams_bio(in,NULL); 222 else if (informat == FORMAT_PEM) 223 dsa=PEM_read_bio_DSAparams(in,NULL,NULL,NULL); 224 else 225 { 226 BIO_printf(bio_err,"bad input format specified\n"); 227 goto end; 228 } 229 if (dsa == NULL) 230 { 231 BIO_printf(bio_err,"unable to load DSA parameters\n"); 232 ERR_print_errors(bio_err); 233 goto end; 234 } 235 236 if (text) 237 { 238 DSAparams_print(out,dsa); 239 } 240 241 if (C) 242 { 243 unsigned char *data; 244 int l,len,bits_p,bits_q,bits_g; 245 246 len=BN_num_bytes(dsa->p); 247 bits_p=BN_num_bits(dsa->p); 248 bits_q=BN_num_bits(dsa->q); 249 bits_g=BN_num_bits(dsa->g); 250 data=(unsigned char *)Malloc(len+20); 251 if (data == NULL) 252 { 253 perror("Malloc"); 254 goto end; 255 } 256 l=BN_bn2bin(dsa->p,data); 257 printf("static unsigned char dsa%d_p[]={",bits_p); 258 for (i=0; i<l; i++) 259 { 260 if ((i%12) == 0) printf("\n\t"); 261 printf("0x%02X,",data[i]); 262 } 263 printf("\n\t};\n"); 264 265 l=BN_bn2bin(dsa->q,data); 266 printf("static unsigned char dsa%d_q[]={",bits_p); 267 for (i=0; i<l; i++) 268 { 269 if ((i%12) == 0) printf("\n\t"); 270 printf("0x%02X,",data[i]); 271 } 272 printf("\n\t};\n"); 273 274 l=BN_bn2bin(dsa->g,data); 275 printf("static unsigned char dsa%d_g[]={",bits_p); 276 for (i=0; i<l; i++) 277 { 278 if ((i%12) == 0) printf("\n\t"); 279 printf("0x%02X,",data[i]); 280 } 281 printf("\n\t};\n\n"); 282 283 printf("DSA *get_dsa%d()\n\t{\n",bits_p); 284 printf("\tDSA *dsa;\n\n"); 285 printf("\tif ((dsa=DSA_new()) == NULL) return(NULL);\n"); 286 printf("\tdsa->p=BN_bin2bn(dsa%d_p,sizeof(dsa%d_p),NULL);\n", 287 bits_p,bits_p); 288 printf("\tdsa->q=BN_bin2bn(dsa%d_q,sizeof(dsa%d_q),NULL);\n", 289 bits_p,bits_p); 290 printf("\tdsa->g=BN_bin2bn(dsa%d_g,sizeof(dsa%d_g),NULL);\n", 291 bits_p,bits_p); 292 printf("\tif ((dsa->p == NULL) || (dsa->q == NULL) || (dsa->g == NULL))\n"); 293 printf("\t\treturn(NULL);\n"); 294 printf("\treturn(dsa);\n\t}\n"); 295 } 296 297 298 if (!noout) 299 { 300 if (outformat == FORMAT_ASN1) 301 i=i2d_DSAparams_bio(out,dsa); 302 else if (outformat == FORMAT_PEM) 303 i=PEM_write_bio_DSAparams(out,dsa); 304 else { 305 BIO_printf(bio_err,"bad output format specified for outfile\n"); 306 goto end; 307 } 308 if (!i) 309 { 310 BIO_printf(bio_err,"unable to write DSA paramaters\n"); 311 ERR_print_errors(bio_err); 312 goto end; 313 } 314 } 315 if (genkey) 316 { 317 DSA *dsakey; 318 319 if ((dsakey=DSAparams_dup(dsa)) == NULL) goto end; 320 if (!DSA_generate_key(dsakey)) goto end; 321 if (outformat == FORMAT_ASN1) 322 i=i2d_DSAPrivateKey_bio(out,dsakey); 323 else if (outformat == FORMAT_PEM) 324 i=PEM_write_bio_DSAPrivateKey(out,dsakey,NULL,NULL,0,NULL,NULL); 325 else { 326 BIO_printf(bio_err,"bad output format specified for outfile\n"); 327 goto end; 328 } 329 DSA_free(dsakey); 330 } 331 ret=0; 332 end: 333 if (in != NULL) BIO_free(in); 334 if (out != NULL) BIO_free(out); 335 if (dsa != NULL) DSA_free(dsa); 336 EXIT(ret); 337 } 338 339 static void MS_CALLBACK dsa_cb(int p, int n, char *arg) 340 { 341 char c='*'; 342 343 if (p == 0) c='.'; 344 if (p == 1) c='+'; 345 if (p == 2) c='*'; 346 if (p == 3) c='\n'; 347 BIO_write((BIO *)arg,&c,1); 348 (void)BIO_flush((BIO *)arg); 349 #ifdef LINT 350 p=n; 351 #endif 352 } 353 #endif 354