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 OPENSSL_NO_DSA 60 #include <assert.h> 61 #include <stdio.h> 62 #include <stdlib.h> 63 #include <time.h> 64 #include <string.h> 65 #include "apps.h" 66 #include <openssl/bio.h> 67 #include <openssl/err.h> 68 #include <openssl/bn.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 (DER 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, void *arg); 88 89 int MAIN(int, char **); 90 91 int MAIN(int argc, char **argv) 92 { 93 ENGINE *e = NULL; 94 DSA *dsa=NULL; 95 int i,badops=0,text=0; 96 BIO *in=NULL,*out=NULL; 97 int informat,outformat,noout=0,C=0,ret=1; 98 char *infile,*outfile,*prog,*inrand=NULL; 99 int numbits= -1,num,genkey=0; 100 int need_rand=0; 101 char *engine=NULL; 102 103 apps_startup(); 104 105 if (bio_err == NULL) 106 if ((bio_err=BIO_new(BIO_s_file())) != NULL) 107 BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT); 108 109 if (!load_config(bio_err, NULL)) 110 goto end; 111 112 infile=NULL; 113 outfile=NULL; 114 informat=FORMAT_PEM; 115 outformat=FORMAT_PEM; 116 117 prog=argv[0]; 118 argc--; 119 argv++; 120 while (argc >= 1) 121 { 122 if (strcmp(*argv,"-inform") == 0) 123 { 124 if (--argc < 1) goto bad; 125 informat=str2fmt(*(++argv)); 126 } 127 else if (strcmp(*argv,"-outform") == 0) 128 { 129 if (--argc < 1) goto bad; 130 outformat=str2fmt(*(++argv)); 131 } 132 else if (strcmp(*argv,"-in") == 0) 133 { 134 if (--argc < 1) goto bad; 135 infile= *(++argv); 136 } 137 else if (strcmp(*argv,"-out") == 0) 138 { 139 if (--argc < 1) goto bad; 140 outfile= *(++argv); 141 } 142 else if(strcmp(*argv, "-engine") == 0) 143 { 144 if (--argc < 1) goto bad; 145 engine = *(++argv); 146 } 147 else if (strcmp(*argv,"-text") == 0) 148 text=1; 149 else if (strcmp(*argv,"-C") == 0) 150 C=1; 151 else if (strcmp(*argv,"-genkey") == 0) 152 { 153 genkey=1; 154 need_rand=1; 155 } 156 else if (strcmp(*argv,"-rand") == 0) 157 { 158 if (--argc < 1) goto bad; 159 inrand= *(++argv); 160 need_rand=1; 161 } 162 else if (strcmp(*argv,"-noout") == 0) 163 noout=1; 164 else if (sscanf(*argv,"%d",&num) == 1) 165 { 166 /* generate a key */ 167 numbits=num; 168 need_rand=1; 169 } 170 else 171 { 172 BIO_printf(bio_err,"unknown option %s\n",*argv); 173 badops=1; 174 break; 175 } 176 argc--; 177 argv++; 178 } 179 180 if (badops) 181 { 182 bad: 183 BIO_printf(bio_err,"%s [options] [bits] <infile >outfile\n",prog); 184 BIO_printf(bio_err,"where options are\n"); 185 BIO_printf(bio_err," -inform arg input format - DER or PEM\n"); 186 BIO_printf(bio_err," -outform arg output format - DER or PEM\n"); 187 BIO_printf(bio_err," -in arg input file\n"); 188 BIO_printf(bio_err," -out arg output file\n"); 189 BIO_printf(bio_err," -text print as text\n"); 190 BIO_printf(bio_err," -C Output C code\n"); 191 BIO_printf(bio_err," -noout no output\n"); 192 BIO_printf(bio_err," -genkey generate a DSA key\n"); 193 BIO_printf(bio_err," -rand files to use for random number input\n"); 194 BIO_printf(bio_err," -engine e use engine e, possibly a hardware device.\n"); 195 BIO_printf(bio_err," number number of bits to use for generating private key\n"); 196 goto end; 197 } 198 199 ERR_load_crypto_strings(); 200 201 in=BIO_new(BIO_s_file()); 202 out=BIO_new(BIO_s_file()); 203 if ((in == NULL) || (out == NULL)) 204 { 205 ERR_print_errors(bio_err); 206 goto end; 207 } 208 209 if (infile == NULL) 210 BIO_set_fp(in,stdin,BIO_NOCLOSE); 211 else 212 { 213 if (BIO_read_filename(in,infile) <= 0) 214 { 215 perror(infile); 216 goto end; 217 } 218 } 219 if (outfile == NULL) 220 { 221 BIO_set_fp(out,stdout,BIO_NOCLOSE); 222 #ifdef OPENSSL_SYS_VMS 223 { 224 BIO *tmpbio = BIO_new(BIO_f_linebuffer()); 225 out = BIO_push(tmpbio, out); 226 } 227 #endif 228 } 229 else 230 { 231 if (BIO_write_filename(out,outfile) <= 0) 232 { 233 perror(outfile); 234 goto end; 235 } 236 } 237 238 e = setup_engine(bio_err, engine, 0); 239 240 if (need_rand) 241 { 242 app_RAND_load_file(NULL, bio_err, (inrand != NULL)); 243 if (inrand != NULL) 244 BIO_printf(bio_err,"%ld semi-random bytes loaded\n", 245 app_RAND_load_files(inrand)); 246 } 247 248 if (numbits > 0) 249 { 250 assert(need_rand); 251 BIO_printf(bio_err,"Generating DSA parameters, %d bit long prime\n",num); 252 BIO_printf(bio_err,"This could take some time\n"); 253 dsa=DSA_generate_parameters(num,NULL,0,NULL,NULL, dsa_cb,bio_err); 254 } 255 else if (informat == FORMAT_ASN1) 256 dsa=d2i_DSAparams_bio(in,NULL); 257 else if (informat == FORMAT_PEM) 258 dsa=PEM_read_bio_DSAparams(in,NULL,NULL,NULL); 259 else 260 { 261 BIO_printf(bio_err,"bad input format specified\n"); 262 goto end; 263 } 264 if (dsa == NULL) 265 { 266 BIO_printf(bio_err,"unable to load DSA parameters\n"); 267 ERR_print_errors(bio_err); 268 goto end; 269 } 270 271 if (text) 272 { 273 DSAparams_print(out,dsa); 274 } 275 276 if (C) 277 { 278 unsigned char *data; 279 int l,len,bits_p,bits_q,bits_g; 280 281 len=BN_num_bytes(dsa->p); 282 bits_p=BN_num_bits(dsa->p); 283 bits_q=BN_num_bits(dsa->q); 284 bits_g=BN_num_bits(dsa->g); 285 data=(unsigned char *)OPENSSL_malloc(len+20); 286 if (data == NULL) 287 { 288 perror("OPENSSL_malloc"); 289 goto end; 290 } 291 l=BN_bn2bin(dsa->p,data); 292 printf("static unsigned char dsa%d_p[]={",bits_p); 293 for (i=0; i<l; i++) 294 { 295 if ((i%12) == 0) printf("\n\t"); 296 printf("0x%02X,",data[i]); 297 } 298 printf("\n\t};\n"); 299 300 l=BN_bn2bin(dsa->q,data); 301 printf("static unsigned char dsa%d_q[]={",bits_p); 302 for (i=0; i<l; i++) 303 { 304 if ((i%12) == 0) printf("\n\t"); 305 printf("0x%02X,",data[i]); 306 } 307 printf("\n\t};\n"); 308 309 l=BN_bn2bin(dsa->g,data); 310 printf("static unsigned char dsa%d_g[]={",bits_p); 311 for (i=0; i<l; i++) 312 { 313 if ((i%12) == 0) printf("\n\t"); 314 printf("0x%02X,",data[i]); 315 } 316 printf("\n\t};\n\n"); 317 318 printf("DSA *get_dsa%d()\n\t{\n",bits_p); 319 printf("\tDSA *dsa;\n\n"); 320 printf("\tif ((dsa=DSA_new()) == NULL) return(NULL);\n"); 321 printf("\tdsa->p=BN_bin2bn(dsa%d_p,sizeof(dsa%d_p),NULL);\n", 322 bits_p,bits_p); 323 printf("\tdsa->q=BN_bin2bn(dsa%d_q,sizeof(dsa%d_q),NULL);\n", 324 bits_p,bits_p); 325 printf("\tdsa->g=BN_bin2bn(dsa%d_g,sizeof(dsa%d_g),NULL);\n", 326 bits_p,bits_p); 327 printf("\tif ((dsa->p == NULL) || (dsa->q == NULL) || (dsa->g == NULL))\n"); 328 printf("\t\t{ DSA_free(dsa); return(NULL); }\n"); 329 printf("\treturn(dsa);\n\t}\n"); 330 } 331 332 333 if (!noout) 334 { 335 if (outformat == FORMAT_ASN1) 336 i=i2d_DSAparams_bio(out,dsa); 337 else if (outformat == FORMAT_PEM) 338 i=PEM_write_bio_DSAparams(out,dsa); 339 else { 340 BIO_printf(bio_err,"bad output format specified for outfile\n"); 341 goto end; 342 } 343 if (!i) 344 { 345 BIO_printf(bio_err,"unable to write DSA parameters\n"); 346 ERR_print_errors(bio_err); 347 goto end; 348 } 349 } 350 if (genkey) 351 { 352 DSA *dsakey; 353 354 assert(need_rand); 355 if ((dsakey=DSAparams_dup(dsa)) == NULL) goto end; 356 if (!DSA_generate_key(dsakey)) goto end; 357 if (outformat == FORMAT_ASN1) 358 i=i2d_DSAPrivateKey_bio(out,dsakey); 359 else if (outformat == FORMAT_PEM) 360 i=PEM_write_bio_DSAPrivateKey(out,dsakey,NULL,NULL,0,NULL,NULL); 361 else { 362 BIO_printf(bio_err,"bad output format specified for outfile\n"); 363 goto end; 364 } 365 DSA_free(dsakey); 366 } 367 if (need_rand) 368 app_RAND_write_file(NULL, bio_err); 369 ret=0; 370 end: 371 if (in != NULL) BIO_free(in); 372 if (out != NULL) BIO_free_all(out); 373 if (dsa != NULL) DSA_free(dsa); 374 apps_shutdown(); 375 OPENSSL_EXIT(ret); 376 } 377 378 static void MS_CALLBACK dsa_cb(int p, int n, void *arg) 379 { 380 char c='*'; 381 382 if (p == 0) c='.'; 383 if (p == 1) c='+'; 384 if (p == 2) c='*'; 385 if (p == 3) c='\n'; 386 BIO_write(arg,&c,1); 387 (void)BIO_flush(arg); 388 #ifdef LINT 389 p=n; 390 #endif 391 } 392 #endif 393