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 #ifndef OPENSSL_NO_ENGINE 94 ENGINE *e = NULL; 95 #endif 96 DSA *dsa=NULL; 97 int i,badops=0,text=0; 98 BIO *in=NULL,*out=NULL; 99 int informat,outformat,noout=0,C=0,ret=1; 100 char *infile,*outfile,*prog,*inrand=NULL; 101 int numbits= -1,num,genkey=0; 102 int need_rand=0; 103 #ifndef OPENSSL_NO_ENGINE 104 char *engine=NULL; 105 #endif 106 107 apps_startup(); 108 109 if (bio_err == NULL) 110 if ((bio_err=BIO_new(BIO_s_file())) != NULL) 111 BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT); 112 113 if (!load_config(bio_err, NULL)) 114 goto end; 115 116 infile=NULL; 117 outfile=NULL; 118 informat=FORMAT_PEM; 119 outformat=FORMAT_PEM; 120 121 prog=argv[0]; 122 argc--; 123 argv++; 124 while (argc >= 1) 125 { 126 if (strcmp(*argv,"-inform") == 0) 127 { 128 if (--argc < 1) goto bad; 129 informat=str2fmt(*(++argv)); 130 } 131 else if (strcmp(*argv,"-outform") == 0) 132 { 133 if (--argc < 1) goto bad; 134 outformat=str2fmt(*(++argv)); 135 } 136 else if (strcmp(*argv,"-in") == 0) 137 { 138 if (--argc < 1) goto bad; 139 infile= *(++argv); 140 } 141 else if (strcmp(*argv,"-out") == 0) 142 { 143 if (--argc < 1) goto bad; 144 outfile= *(++argv); 145 } 146 #ifndef OPENSSL_NO_ENGINE 147 else if(strcmp(*argv, "-engine") == 0) 148 { 149 if (--argc < 1) goto bad; 150 engine = *(++argv); 151 } 152 #endif 153 else if (strcmp(*argv,"-text") == 0) 154 text=1; 155 else if (strcmp(*argv,"-C") == 0) 156 C=1; 157 else if (strcmp(*argv,"-genkey") == 0) 158 { 159 genkey=1; 160 need_rand=1; 161 } 162 else if (strcmp(*argv,"-rand") == 0) 163 { 164 if (--argc < 1) goto bad; 165 inrand= *(++argv); 166 need_rand=1; 167 } 168 else if (strcmp(*argv,"-noout") == 0) 169 noout=1; 170 else if (sscanf(*argv,"%d",&num) == 1) 171 { 172 /* generate a key */ 173 numbits=num; 174 need_rand=1; 175 } 176 else 177 { 178 BIO_printf(bio_err,"unknown option %s\n",*argv); 179 badops=1; 180 break; 181 } 182 argc--; 183 argv++; 184 } 185 186 if (badops) 187 { 188 bad: 189 BIO_printf(bio_err,"%s [options] [bits] <infile >outfile\n",prog); 190 BIO_printf(bio_err,"where options are\n"); 191 BIO_printf(bio_err," -inform arg input format - DER or PEM\n"); 192 BIO_printf(bio_err," -outform arg output format - DER or PEM\n"); 193 BIO_printf(bio_err," -in arg input file\n"); 194 BIO_printf(bio_err," -out arg output file\n"); 195 BIO_printf(bio_err," -text print as text\n"); 196 BIO_printf(bio_err," -C Output C code\n"); 197 BIO_printf(bio_err," -noout no output\n"); 198 BIO_printf(bio_err," -genkey generate a DSA key\n"); 199 BIO_printf(bio_err," -rand files to use for random number input\n"); 200 #ifndef OPENSSL_NO_ENGINE 201 BIO_printf(bio_err," -engine e use engine e, possibly a hardware device.\n"); 202 #endif 203 BIO_printf(bio_err," number number of bits to use for generating private key\n"); 204 goto end; 205 } 206 207 ERR_load_crypto_strings(); 208 209 in=BIO_new(BIO_s_file()); 210 out=BIO_new(BIO_s_file()); 211 if ((in == NULL) || (out == NULL)) 212 { 213 ERR_print_errors(bio_err); 214 goto end; 215 } 216 217 if (infile == NULL) 218 BIO_set_fp(in,stdin,BIO_NOCLOSE); 219 else 220 { 221 if (BIO_read_filename(in,infile) <= 0) 222 { 223 perror(infile); 224 goto end; 225 } 226 } 227 if (outfile == NULL) 228 { 229 BIO_set_fp(out,stdout,BIO_NOCLOSE); 230 #ifdef OPENSSL_SYS_VMS 231 { 232 BIO *tmpbio = BIO_new(BIO_f_linebuffer()); 233 out = BIO_push(tmpbio, out); 234 } 235 #endif 236 } 237 else 238 { 239 if (BIO_write_filename(out,outfile) <= 0) 240 { 241 perror(outfile); 242 goto end; 243 } 244 } 245 246 #ifndef OPENSSL_NO_ENGINE 247 e = setup_engine(bio_err, engine, 0); 248 #endif 249 250 if (need_rand) 251 { 252 app_RAND_load_file(NULL, bio_err, (inrand != NULL)); 253 if (inrand != NULL) 254 BIO_printf(bio_err,"%ld semi-random bytes loaded\n", 255 app_RAND_load_files(inrand)); 256 } 257 258 if (numbits > 0) 259 { 260 assert(need_rand); 261 BIO_printf(bio_err,"Generating DSA parameters, %d bit long prime\n",num); 262 BIO_printf(bio_err,"This could take some time\n"); 263 dsa=DSA_generate_parameters(num,NULL,0,NULL,NULL, dsa_cb,bio_err); 264 } 265 else if (informat == FORMAT_ASN1) 266 dsa=d2i_DSAparams_bio(in,NULL); 267 else if (informat == FORMAT_PEM) 268 dsa=PEM_read_bio_DSAparams(in,NULL,NULL,NULL); 269 else 270 { 271 BIO_printf(bio_err,"bad input format specified\n"); 272 goto end; 273 } 274 if (dsa == NULL) 275 { 276 BIO_printf(bio_err,"unable to load DSA parameters\n"); 277 ERR_print_errors(bio_err); 278 goto end; 279 } 280 281 if (text) 282 { 283 DSAparams_print(out,dsa); 284 } 285 286 if (C) 287 { 288 unsigned char *data; 289 int l,len,bits_p,bits_q,bits_g; 290 291 len=BN_num_bytes(dsa->p); 292 bits_p=BN_num_bits(dsa->p); 293 bits_q=BN_num_bits(dsa->q); 294 bits_g=BN_num_bits(dsa->g); 295 data=(unsigned char *)OPENSSL_malloc(len+20); 296 if (data == NULL) 297 { 298 perror("OPENSSL_malloc"); 299 goto end; 300 } 301 l=BN_bn2bin(dsa->p,data); 302 printf("static unsigned char dsa%d_p[]={",bits_p); 303 for (i=0; i<l; i++) 304 { 305 if ((i%12) == 0) printf("\n\t"); 306 printf("0x%02X,",data[i]); 307 } 308 printf("\n\t};\n"); 309 310 l=BN_bn2bin(dsa->q,data); 311 printf("static unsigned char dsa%d_q[]={",bits_p); 312 for (i=0; i<l; i++) 313 { 314 if ((i%12) == 0) printf("\n\t"); 315 printf("0x%02X,",data[i]); 316 } 317 printf("\n\t};\n"); 318 319 l=BN_bn2bin(dsa->g,data); 320 printf("static unsigned char dsa%d_g[]={",bits_p); 321 for (i=0; i<l; i++) 322 { 323 if ((i%12) == 0) printf("\n\t"); 324 printf("0x%02X,",data[i]); 325 } 326 printf("\n\t};\n\n"); 327 328 printf("DSA *get_dsa%d()\n\t{\n",bits_p); 329 printf("\tDSA *dsa;\n\n"); 330 printf("\tif ((dsa=DSA_new()) == NULL) return(NULL);\n"); 331 printf("\tdsa->p=BN_bin2bn(dsa%d_p,sizeof(dsa%d_p),NULL);\n", 332 bits_p,bits_p); 333 printf("\tdsa->q=BN_bin2bn(dsa%d_q,sizeof(dsa%d_q),NULL);\n", 334 bits_p,bits_p); 335 printf("\tdsa->g=BN_bin2bn(dsa%d_g,sizeof(dsa%d_g),NULL);\n", 336 bits_p,bits_p); 337 printf("\tif ((dsa->p == NULL) || (dsa->q == NULL) || (dsa->g == NULL))\n"); 338 printf("\t\t{ DSA_free(dsa); return(NULL); }\n"); 339 printf("\treturn(dsa);\n\t}\n"); 340 } 341 342 343 if (!noout) 344 { 345 if (outformat == FORMAT_ASN1) 346 i=i2d_DSAparams_bio(out,dsa); 347 else if (outformat == FORMAT_PEM) 348 i=PEM_write_bio_DSAparams(out,dsa); 349 else { 350 BIO_printf(bio_err,"bad output format specified for outfile\n"); 351 goto end; 352 } 353 if (!i) 354 { 355 BIO_printf(bio_err,"unable to write DSA parameters\n"); 356 ERR_print_errors(bio_err); 357 goto end; 358 } 359 } 360 if (genkey) 361 { 362 DSA *dsakey; 363 364 assert(need_rand); 365 if ((dsakey=DSAparams_dup(dsa)) == NULL) goto end; 366 if (!DSA_generate_key(dsakey)) goto end; 367 if (outformat == FORMAT_ASN1) 368 i=i2d_DSAPrivateKey_bio(out,dsakey); 369 else if (outformat == FORMAT_PEM) 370 i=PEM_write_bio_DSAPrivateKey(out,dsakey,NULL,NULL,0,NULL,NULL); 371 else { 372 BIO_printf(bio_err,"bad output format specified for outfile\n"); 373 goto end; 374 } 375 DSA_free(dsakey); 376 } 377 if (need_rand) 378 app_RAND_write_file(NULL, bio_err); 379 ret=0; 380 end: 381 if (in != NULL) BIO_free(in); 382 if (out != NULL) BIO_free_all(out); 383 if (dsa != NULL) DSA_free(dsa); 384 apps_shutdown(); 385 OPENSSL_EXIT(ret); 386 } 387 388 static void MS_CALLBACK dsa_cb(int p, int n, void *arg) 389 { 390 char c='*'; 391 392 if (p == 0) c='.'; 393 if (p == 1) c='+'; 394 if (p == 2) c='*'; 395 if (p == 3) c='\n'; 396 BIO_write(arg,&c,1); 397 (void)BIO_flush(arg); 398 #ifdef LINT 399 p=n; 400 #endif 401 } 402 #endif 403