Alexandre Savard | 1b09e31 | 2012-08-07 20:33:29 -0400 | [diff] [blame] | 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 | #include <openssl/opensslconf.h> /* for OPENSSL_NO_DSA */ |
| 60 | /* Until the key-gen callbacks are modified to use newer prototypes, we allow |
| 61 | * deprecated functions for openssl-internal code */ |
| 62 | #ifdef OPENSSL_NO_DEPRECATED |
| 63 | #undef OPENSSL_NO_DEPRECATED |
| 64 | #endif |
| 65 | |
| 66 | #ifndef OPENSSL_NO_DSA |
| 67 | #include <assert.h> |
| 68 | #include <stdio.h> |
| 69 | #include <stdlib.h> |
| 70 | #include <time.h> |
| 71 | #include <string.h> |
| 72 | #include "apps.h" |
| 73 | #include <openssl/bio.h> |
| 74 | #include <openssl/err.h> |
| 75 | #include <openssl/bn.h> |
| 76 | #include <openssl/dsa.h> |
| 77 | #include <openssl/x509.h> |
| 78 | #include <openssl/pem.h> |
| 79 | |
| 80 | #undef PROG |
| 81 | #define PROG dsaparam_main |
| 82 | |
| 83 | /* -inform arg - input format - default PEM (DER or PEM) |
| 84 | * -outform arg - output format - default PEM |
| 85 | * -in arg - input file - default stdin |
| 86 | * -out arg - output file - default stdout |
| 87 | * -noout |
| 88 | * -text |
| 89 | * -C |
| 90 | * -noout |
| 91 | * -genkey |
| 92 | * #ifdef GENCB_TEST |
| 93 | * -timebomb n - interrupt keygen after <n> seconds |
| 94 | * #endif |
| 95 | */ |
| 96 | |
| 97 | #ifdef GENCB_TEST |
| 98 | |
| 99 | static int stop_keygen_flag = 0; |
| 100 | |
| 101 | static void timebomb_sigalarm(int foo) |
| 102 | { |
| 103 | stop_keygen_flag = 1; |
| 104 | } |
| 105 | |
| 106 | #endif |
| 107 | |
| 108 | static int MS_CALLBACK dsa_cb(int p, int n, BN_GENCB *cb); |
| 109 | |
| 110 | int MAIN(int, char **); |
| 111 | |
| 112 | int MAIN(int argc, char **argv) |
| 113 | { |
| 114 | DSA *dsa=NULL; |
| 115 | int i,badops=0,text=0; |
| 116 | BIO *in=NULL,*out=NULL; |
| 117 | int informat,outformat,noout=0,C=0,ret=1; |
| 118 | char *infile,*outfile,*prog,*inrand=NULL; |
| 119 | int numbits= -1,num,genkey=0; |
| 120 | int need_rand=0; |
| 121 | #ifndef OPENSSL_NO_ENGINE |
| 122 | char *engine=NULL; |
| 123 | #endif |
| 124 | #ifdef GENCB_TEST |
| 125 | int timebomb=0; |
| 126 | #endif |
| 127 | |
| 128 | apps_startup(); |
| 129 | |
| 130 | if (bio_err == NULL) |
| 131 | if ((bio_err=BIO_new(BIO_s_file())) != NULL) |
| 132 | BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT); |
| 133 | |
| 134 | if (!load_config(bio_err, NULL)) |
| 135 | goto end; |
| 136 | |
| 137 | infile=NULL; |
| 138 | outfile=NULL; |
| 139 | informat=FORMAT_PEM; |
| 140 | outformat=FORMAT_PEM; |
| 141 | |
| 142 | prog=argv[0]; |
| 143 | argc--; |
| 144 | argv++; |
| 145 | while (argc >= 1) |
| 146 | { |
| 147 | if (strcmp(*argv,"-inform") == 0) |
| 148 | { |
| 149 | if (--argc < 1) goto bad; |
| 150 | informat=str2fmt(*(++argv)); |
| 151 | } |
| 152 | else if (strcmp(*argv,"-outform") == 0) |
| 153 | { |
| 154 | if (--argc < 1) goto bad; |
| 155 | outformat=str2fmt(*(++argv)); |
| 156 | } |
| 157 | else if (strcmp(*argv,"-in") == 0) |
| 158 | { |
| 159 | if (--argc < 1) goto bad; |
| 160 | infile= *(++argv); |
| 161 | } |
| 162 | else if (strcmp(*argv,"-out") == 0) |
| 163 | { |
| 164 | if (--argc < 1) goto bad; |
| 165 | outfile= *(++argv); |
| 166 | } |
| 167 | #ifndef OPENSSL_NO_ENGINE |
| 168 | else if(strcmp(*argv, "-engine") == 0) |
| 169 | { |
| 170 | if (--argc < 1) goto bad; |
| 171 | engine = *(++argv); |
| 172 | } |
| 173 | #endif |
| 174 | #ifdef GENCB_TEST |
| 175 | else if(strcmp(*argv, "-timebomb") == 0) |
| 176 | { |
| 177 | if (--argc < 1) goto bad; |
| 178 | timebomb = atoi(*(++argv)); |
| 179 | } |
| 180 | #endif |
| 181 | else if (strcmp(*argv,"-text") == 0) |
| 182 | text=1; |
| 183 | else if (strcmp(*argv,"-C") == 0) |
| 184 | C=1; |
| 185 | else if (strcmp(*argv,"-genkey") == 0) |
| 186 | { |
| 187 | genkey=1; |
| 188 | need_rand=1; |
| 189 | } |
| 190 | else if (strcmp(*argv,"-rand") == 0) |
| 191 | { |
| 192 | if (--argc < 1) goto bad; |
| 193 | inrand= *(++argv); |
| 194 | need_rand=1; |
| 195 | } |
| 196 | else if (strcmp(*argv,"-noout") == 0) |
| 197 | noout=1; |
| 198 | else if (sscanf(*argv,"%d",&num) == 1) |
| 199 | { |
| 200 | /* generate a key */ |
| 201 | numbits=num; |
| 202 | need_rand=1; |
| 203 | } |
| 204 | else |
| 205 | { |
| 206 | BIO_printf(bio_err,"unknown option %s\n",*argv); |
| 207 | badops=1; |
| 208 | break; |
| 209 | } |
| 210 | argc--; |
| 211 | argv++; |
| 212 | } |
| 213 | |
| 214 | if (badops) |
| 215 | { |
| 216 | bad: |
| 217 | BIO_printf(bio_err,"%s [options] [bits] <infile >outfile\n",prog); |
| 218 | BIO_printf(bio_err,"where options are\n"); |
| 219 | BIO_printf(bio_err," -inform arg input format - DER or PEM\n"); |
| 220 | BIO_printf(bio_err," -outform arg output format - DER or PEM\n"); |
| 221 | BIO_printf(bio_err," -in arg input file\n"); |
| 222 | BIO_printf(bio_err," -out arg output file\n"); |
| 223 | BIO_printf(bio_err," -text print as text\n"); |
| 224 | BIO_printf(bio_err," -C Output C code\n"); |
| 225 | BIO_printf(bio_err," -noout no output\n"); |
| 226 | BIO_printf(bio_err," -genkey generate a DSA key\n"); |
| 227 | BIO_printf(bio_err," -rand files to use for random number input\n"); |
| 228 | #ifndef OPENSSL_NO_ENGINE |
| 229 | BIO_printf(bio_err," -engine e use engine e, possibly a hardware device.\n"); |
| 230 | #endif |
| 231 | #ifdef GENCB_TEST |
| 232 | BIO_printf(bio_err," -timebomb n interrupt keygen after <n> seconds\n"); |
| 233 | #endif |
| 234 | BIO_printf(bio_err," number number of bits to use for generating private key\n"); |
| 235 | goto end; |
| 236 | } |
| 237 | |
| 238 | ERR_load_crypto_strings(); |
| 239 | |
| 240 | in=BIO_new(BIO_s_file()); |
| 241 | out=BIO_new(BIO_s_file()); |
| 242 | if ((in == NULL) || (out == NULL)) |
| 243 | { |
| 244 | ERR_print_errors(bio_err); |
| 245 | goto end; |
| 246 | } |
| 247 | |
| 248 | if (infile == NULL) |
| 249 | BIO_set_fp(in,stdin,BIO_NOCLOSE); |
| 250 | else |
| 251 | { |
| 252 | if (BIO_read_filename(in,infile) <= 0) |
| 253 | { |
| 254 | perror(infile); |
| 255 | goto end; |
| 256 | } |
| 257 | } |
| 258 | if (outfile == NULL) |
| 259 | { |
| 260 | BIO_set_fp(out,stdout,BIO_NOCLOSE); |
| 261 | #ifdef OPENSSL_SYS_VMS |
| 262 | { |
| 263 | BIO *tmpbio = BIO_new(BIO_f_linebuffer()); |
| 264 | out = BIO_push(tmpbio, out); |
| 265 | } |
| 266 | #endif |
| 267 | } |
| 268 | else |
| 269 | { |
| 270 | if (BIO_write_filename(out,outfile) <= 0) |
| 271 | { |
| 272 | perror(outfile); |
| 273 | goto end; |
| 274 | } |
| 275 | } |
| 276 | |
| 277 | #ifndef OPENSSL_NO_ENGINE |
| 278 | setup_engine(bio_err, engine, 0); |
| 279 | #endif |
| 280 | |
| 281 | if (need_rand) |
| 282 | { |
| 283 | app_RAND_load_file(NULL, bio_err, (inrand != NULL)); |
| 284 | if (inrand != NULL) |
| 285 | BIO_printf(bio_err,"%ld semi-random bytes loaded\n", |
| 286 | app_RAND_load_files(inrand)); |
| 287 | } |
| 288 | |
| 289 | if (numbits > 0) |
| 290 | { |
| 291 | BN_GENCB cb; |
| 292 | BN_GENCB_set(&cb, dsa_cb, bio_err); |
| 293 | assert(need_rand); |
| 294 | dsa = DSA_new(); |
| 295 | if(!dsa) |
| 296 | { |
| 297 | BIO_printf(bio_err,"Error allocating DSA object\n"); |
| 298 | goto end; |
| 299 | } |
| 300 | BIO_printf(bio_err,"Generating DSA parameters, %d bit long prime\n",num); |
| 301 | BIO_printf(bio_err,"This could take some time\n"); |
| 302 | #ifdef GENCB_TEST |
| 303 | if(timebomb > 0) |
| 304 | { |
| 305 | struct sigaction act; |
| 306 | act.sa_handler = timebomb_sigalarm; |
| 307 | act.sa_flags = 0; |
| 308 | BIO_printf(bio_err,"(though I'll stop it if not done within %d secs)\n", |
| 309 | timebomb); |
| 310 | if(sigaction(SIGALRM, &act, NULL) != 0) |
| 311 | { |
| 312 | BIO_printf(bio_err,"Error, couldn't set SIGALRM handler\n"); |
| 313 | goto end; |
| 314 | } |
| 315 | alarm(timebomb); |
| 316 | } |
| 317 | #endif |
| 318 | if(!DSA_generate_parameters_ex(dsa,num,NULL,0,NULL,NULL, &cb)) |
| 319 | { |
| 320 | #ifdef GENCB_TEST |
| 321 | if(stop_keygen_flag) |
| 322 | { |
| 323 | BIO_printf(bio_err,"DSA key generation time-stopped\n"); |
| 324 | /* This is an asked-for behaviour! */ |
| 325 | ret = 0; |
| 326 | goto end; |
| 327 | } |
| 328 | #endif |
| 329 | BIO_printf(bio_err,"Error, DSA key generation failed\n"); |
| 330 | goto end; |
| 331 | } |
| 332 | } |
| 333 | else if (informat == FORMAT_ASN1) |
| 334 | dsa=d2i_DSAparams_bio(in,NULL); |
| 335 | else if (informat == FORMAT_PEM) |
| 336 | dsa=PEM_read_bio_DSAparams(in,NULL,NULL,NULL); |
| 337 | else |
| 338 | { |
| 339 | BIO_printf(bio_err,"bad input format specified\n"); |
| 340 | goto end; |
| 341 | } |
| 342 | if (dsa == NULL) |
| 343 | { |
| 344 | BIO_printf(bio_err,"unable to load DSA parameters\n"); |
| 345 | ERR_print_errors(bio_err); |
| 346 | goto end; |
| 347 | } |
| 348 | |
| 349 | if (text) |
| 350 | { |
| 351 | DSAparams_print(out,dsa); |
| 352 | } |
| 353 | |
| 354 | if (C) |
| 355 | { |
| 356 | unsigned char *data; |
| 357 | int l,len,bits_p; |
| 358 | |
| 359 | len=BN_num_bytes(dsa->p); |
| 360 | bits_p=BN_num_bits(dsa->p); |
| 361 | data=(unsigned char *)OPENSSL_malloc(len+20); |
| 362 | if (data == NULL) |
| 363 | { |
| 364 | perror("OPENSSL_malloc"); |
| 365 | goto end; |
| 366 | } |
| 367 | l=BN_bn2bin(dsa->p,data); |
| 368 | printf("static unsigned char dsa%d_p[]={",bits_p); |
| 369 | for (i=0; i<l; i++) |
| 370 | { |
| 371 | if ((i%12) == 0) printf("\n\t"); |
| 372 | printf("0x%02X,",data[i]); |
| 373 | } |
| 374 | printf("\n\t};\n"); |
| 375 | |
| 376 | l=BN_bn2bin(dsa->q,data); |
| 377 | printf("static unsigned char dsa%d_q[]={",bits_p); |
| 378 | for (i=0; i<l; i++) |
| 379 | { |
| 380 | if ((i%12) == 0) printf("\n\t"); |
| 381 | printf("0x%02X,",data[i]); |
| 382 | } |
| 383 | printf("\n\t};\n"); |
| 384 | |
| 385 | l=BN_bn2bin(dsa->g,data); |
| 386 | printf("static unsigned char dsa%d_g[]={",bits_p); |
| 387 | for (i=0; i<l; i++) |
| 388 | { |
| 389 | if ((i%12) == 0) printf("\n\t"); |
| 390 | printf("0x%02X,",data[i]); |
| 391 | } |
| 392 | printf("\n\t};\n\n"); |
| 393 | |
| 394 | printf("DSA *get_dsa%d()\n\t{\n",bits_p); |
| 395 | printf("\tDSA *dsa;\n\n"); |
| 396 | printf("\tif ((dsa=DSA_new()) == NULL) return(NULL);\n"); |
| 397 | printf("\tdsa->p=BN_bin2bn(dsa%d_p,sizeof(dsa%d_p),NULL);\n", |
| 398 | bits_p,bits_p); |
| 399 | printf("\tdsa->q=BN_bin2bn(dsa%d_q,sizeof(dsa%d_q),NULL);\n", |
| 400 | bits_p,bits_p); |
| 401 | printf("\tdsa->g=BN_bin2bn(dsa%d_g,sizeof(dsa%d_g),NULL);\n", |
| 402 | bits_p,bits_p); |
| 403 | printf("\tif ((dsa->p == NULL) || (dsa->q == NULL) || (dsa->g == NULL))\n"); |
| 404 | printf("\t\t{ DSA_free(dsa); return(NULL); }\n"); |
| 405 | printf("\treturn(dsa);\n\t}\n"); |
| 406 | } |
| 407 | |
| 408 | |
| 409 | if (!noout) |
| 410 | { |
| 411 | if (outformat == FORMAT_ASN1) |
| 412 | i=i2d_DSAparams_bio(out,dsa); |
| 413 | else if (outformat == FORMAT_PEM) |
| 414 | i=PEM_write_bio_DSAparams(out,dsa); |
| 415 | else { |
| 416 | BIO_printf(bio_err,"bad output format specified for outfile\n"); |
| 417 | goto end; |
| 418 | } |
| 419 | if (!i) |
| 420 | { |
| 421 | BIO_printf(bio_err,"unable to write DSA parameters\n"); |
| 422 | ERR_print_errors(bio_err); |
| 423 | goto end; |
| 424 | } |
| 425 | } |
| 426 | if (genkey) |
| 427 | { |
| 428 | DSA *dsakey; |
| 429 | |
| 430 | assert(need_rand); |
| 431 | if ((dsakey=DSAparams_dup(dsa)) == NULL) goto end; |
| 432 | if (!DSA_generate_key(dsakey)) goto end; |
| 433 | if (outformat == FORMAT_ASN1) |
| 434 | i=i2d_DSAPrivateKey_bio(out,dsakey); |
| 435 | else if (outformat == FORMAT_PEM) |
| 436 | i=PEM_write_bio_DSAPrivateKey(out,dsakey,NULL,NULL,0,NULL,NULL); |
| 437 | else { |
| 438 | BIO_printf(bio_err,"bad output format specified for outfile\n"); |
| 439 | goto end; |
| 440 | } |
| 441 | DSA_free(dsakey); |
| 442 | } |
| 443 | if (need_rand) |
| 444 | app_RAND_write_file(NULL, bio_err); |
| 445 | ret=0; |
| 446 | end: |
| 447 | if (in != NULL) BIO_free(in); |
| 448 | if (out != NULL) BIO_free_all(out); |
| 449 | if (dsa != NULL) DSA_free(dsa); |
| 450 | apps_shutdown(); |
| 451 | OPENSSL_EXIT(ret); |
| 452 | } |
| 453 | |
| 454 | static int MS_CALLBACK dsa_cb(int p, int n, BN_GENCB *cb) |
| 455 | { |
| 456 | char c='*'; |
| 457 | |
| 458 | if (p == 0) c='.'; |
| 459 | if (p == 1) c='+'; |
| 460 | if (p == 2) c='*'; |
| 461 | if (p == 3) c='\n'; |
| 462 | BIO_write(cb->arg,&c,1); |
| 463 | (void)BIO_flush(cb->arg); |
| 464 | #ifdef LINT |
| 465 | p=n; |
| 466 | #endif |
| 467 | #ifdef GENCB_TEST |
| 468 | if(stop_keygen_flag) |
| 469 | return 0; |
| 470 | #endif |
| 471 | return 1; |
| 472 | } |
| 473 | #else /* !OPENSSL_NO_DSA */ |
| 474 | |
| 475 | # if PEDANTIC |
| 476 | static void *dummy=&dummy; |
| 477 | # endif |
| 478 | |
| 479 | #endif |