dsaparam.c revision 205128
1177633Sdfr/* apps/dsaparam.c */ 2177633Sdfr/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3258578Shrs * All rights reserved. 4258578Shrs * 5258578Shrs * This package is an SSL implementation written 6258578Shrs * by Eric Young (eay@cryptsoft.com). 7258578Shrs * The implementation was written so as to conform with Netscapes SSL. 8258578Shrs * 9258578Shrs * This library is free for commercial and non-commercial use as long as 10258578Shrs * the following conditions are aheared to. The following conditions 11258578Shrs * apply to all code found in this distribution, be it the RC4, RSA, 12258578Shrs * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13258578Shrs * included with this distribution is covered by the same copyright terms 14258578Shrs * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15258578Shrs * 16258578Shrs * Copyright remains Eric Young's, and as such any Copyright notices in 17177633Sdfr * the code are not to be removed. 18258578Shrs * If this package is used in a product, Eric Young should be given attribution 19258578Shrs * as the author of the parts of the library used. 20258578Shrs * This can be in the form of a textual message at program startup or 21258578Shrs * in documentation (online or textual) provided with the package. 22258578Shrs * 23258578Shrs * Redistribution and use in source and binary forms, with or without 24258578Shrs * modification, are permitted provided that the following conditions 25258578Shrs * are met: 26258578Shrs * 1. Redistributions of source code must retain the copyright 27258578Shrs * notice, this list of conditions and the following disclaimer. 28258578Shrs * 2. Redistributions in binary form must reproduce the above copyright 29177633Sdfr * notice, this list of conditions and the following disclaimer in the 30177633Sdfr * documentation and/or other materials provided with the distribution. 31177633Sdfr * 3. All advertising materials mentioning features or use of this software 32177633Sdfr * must display the following acknowledgement: 33177633Sdfr * "This product includes cryptographic software written by 34177633Sdfr * Eric Young (eay@cryptsoft.com)" 35177633Sdfr * The word 'cryptographic' can be left out if the rouines from the library 36177633Sdfr * being used are not cryptographic related :-). 37177633Sdfr * 4. If you include any Windows specific code (or a derivative thereof) from 38177633Sdfr * the apps directory (application code) you must include an acknowledgement: 39177633Sdfr * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40177633Sdfr * 41177633Sdfr * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42177633Sdfr * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43177633Sdfr * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44177633Sdfr * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45177633Sdfr * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46177633Sdfr * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47177633Sdfr * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48177633Sdfr * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49177633Sdfr * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50177633Sdfr * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51177633Sdfr * SUCH DAMAGE. 52177633Sdfr * 53177633Sdfr * The licence and distribution terms for any publically available version or 54177633Sdfr * derivative of this code cannot be changed. i.e. this code cannot simply be 55184588Sdfr * copied and put under another distribution licence 56177633Sdfr * [including the GNU Public Licence.] 57177633Sdfr */ 58177633Sdfr 59196503Szec#include <openssl/opensslconf.h> /* for OPENSSL_NO_DSA */ 60196503Szec/* Until the key-gen callbacks are modified to use newer prototypes, we allow 61177633Sdfr * deprecated functions for openssl-internal code */ 62177633Sdfr#ifdef OPENSSL_NO_DEPRECATED 63177685Sdfr#undef OPENSSL_NO_DEPRECATED 64177633Sdfr#endif 65177633Sdfr 66184588Sdfr#ifndef OPENSSL_NO_DSA 67184588Sdfr#include <assert.h> 68184588Sdfr#include <stdio.h> 69184588Sdfr#include <stdlib.h> 70177633Sdfr#include <time.h> 71177633Sdfr#include <string.h> 72193272Sjhb#include "apps.h" 73177633Sdfr#include <openssl/bio.h> 74177633Sdfr#include <openssl/err.h> 75177633Sdfr#include <openssl/bn.h> 76177633Sdfr#include <openssl/dsa.h> 77177633Sdfr#include <openssl/x509.h> 78177633Sdfr#include <openssl/pem.h> 79177633Sdfr 80177633Sdfr#undef PROG 81177633Sdfr#define PROG dsaparam_main 82177633Sdfr 83177633Sdfr/* -inform arg - input format - default PEM (DER or PEM) 84177633Sdfr * -outform arg - output format - default PEM 85177633Sdfr * -in arg - input file - default stdin 86177633Sdfr * -out arg - output file - default stdout 87177633Sdfr * -noout 88177633Sdfr * -text 89177633Sdfr * -C 90177633Sdfr * -noout 91177633Sdfr * -genkey 92177633Sdfr * #ifdef GENCB_TEST 93177633Sdfr * -timebomb n - interrupt keygen after <n> seconds 94177633Sdfr * #endif 95177633Sdfr */ 96177633Sdfr 97177633Sdfr#ifdef GENCB_TEST 98177633Sdfr 99177633Sdfrstatic int stop_keygen_flag = 0; 100177633Sdfr 101177633Sdfrstatic void timebomb_sigalarm(int foo) 102177633Sdfr { 103177633Sdfr stop_keygen_flag = 1; 104177633Sdfr } 105177633Sdfr 106177633Sdfr#endif 107177633Sdfr 108177633Sdfrstatic int MS_CALLBACK dsa_cb(int p, int n, BN_GENCB *cb); 109177633Sdfr 110177633Sdfrint MAIN(int, char **); 111177633Sdfr 112177633Sdfrint MAIN(int argc, char **argv) 113177633Sdfr { 114177633Sdfr#ifndef OPENSSL_NO_ENGINE 115177633Sdfr ENGINE *e = NULL; 116177633Sdfr#endif 117177633Sdfr DSA *dsa=NULL; 118177633Sdfr int i,badops=0,text=0; 119184588Sdfr BIO *in=NULL,*out=NULL; 120184588Sdfr int informat,outformat,noout=0,C=0,ret=1; 121177633Sdfr char *infile,*outfile,*prog,*inrand=NULL; 122177633Sdfr int numbits= -1,num,genkey=0; 123177633Sdfr int need_rand=0; 124177633Sdfr#ifndef OPENSSL_NO_ENGINE 125177633Sdfr char *engine=NULL; 126177633Sdfr#endif 127218757Sbz#ifdef GENCB_TEST 128177633Sdfr int timebomb=0; 129196503Szec#endif 130177633Sdfr 131177633Sdfr apps_startup(); 132177633Sdfr 133184588Sdfr if (bio_err == NULL) 134177633Sdfr if ((bio_err=BIO_new(BIO_s_file())) != NULL) 135177633Sdfr BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT); 136177633Sdfr 137177633Sdfr if (!load_config(bio_err, NULL)) 138177633Sdfr goto end; 139193272Sjhb 140177633Sdfr infile=NULL; 141177633Sdfr outfile=NULL; 142177633Sdfr informat=FORMAT_PEM; 143177633Sdfr outformat=FORMAT_PEM; 144177633Sdfr 145177633Sdfr prog=argv[0]; 146184588Sdfr argc--; 147177633Sdfr argv++; 148177633Sdfr while (argc >= 1) 149177633Sdfr { 150177633Sdfr if (strcmp(*argv,"-inform") == 0) 151177633Sdfr { 152177633Sdfr if (--argc < 1) goto bad; 153177633Sdfr informat=str2fmt(*(++argv)); 154177633Sdfr } 155177633Sdfr else if (strcmp(*argv,"-outform") == 0) 156184588Sdfr { 157184588Sdfr if (--argc < 1) goto bad; 158184588Sdfr outformat=str2fmt(*(++argv)); 159177633Sdfr } 160177633Sdfr else if (strcmp(*argv,"-in") == 0) 161177633Sdfr { 162177633Sdfr if (--argc < 1) goto bad; 163184588Sdfr infile= *(++argv); 164184588Sdfr } 165177633Sdfr else if (strcmp(*argv,"-out") == 0) 166177633Sdfr { 167177633Sdfr if (--argc < 1) goto bad; 168177633Sdfr outfile= *(++argv); 169184588Sdfr } 170177633Sdfr#ifndef OPENSSL_NO_ENGINE 171177633Sdfr else if(strcmp(*argv, "-engine") == 0) 172177633Sdfr { 173184588Sdfr if (--argc < 1) goto bad; 174184588Sdfr engine = *(++argv); 175184588Sdfr } 176184588Sdfr#endif 177184588Sdfr#ifdef GENCB_TEST 178177633Sdfr else if(strcmp(*argv, "-timebomb") == 0) 179177633Sdfr { 180177633Sdfr if (--argc < 1) goto bad; 181177633Sdfr timebomb = atoi(*(++argv)); 182177633Sdfr } 183177633Sdfr#endif 184177633Sdfr else if (strcmp(*argv,"-text") == 0) 185177633Sdfr text=1; 186177633Sdfr else if (strcmp(*argv,"-C") == 0) 187177633Sdfr C=1; 188177633Sdfr else if (strcmp(*argv,"-genkey") == 0) 189177633Sdfr { 190177633Sdfr genkey=1; 191184588Sdfr need_rand=1; 192184588Sdfr } 193184588Sdfr else if (strcmp(*argv,"-rand") == 0) 194184588Sdfr { 195184588Sdfr if (--argc < 1) goto bad; 196184588Sdfr inrand= *(++argv); 197184588Sdfr need_rand=1; 198184588Sdfr } 199184588Sdfr else if (strcmp(*argv,"-noout") == 0) 200184588Sdfr noout=1; 201184588Sdfr else if (sscanf(*argv,"%d",&num) == 1) 202184588Sdfr { 203184588Sdfr /* generate a key */ 204177633Sdfr numbits=num; 205177633Sdfr need_rand=1; 206177633Sdfr } 207177633Sdfr else 208177633Sdfr { 209193272Sjhb BIO_printf(bio_err,"unknown option %s\n",*argv); 210177633Sdfr badops=1; 211177633Sdfr break; 212184588Sdfr } 213177633Sdfr argc--; 214177633Sdfr argv++; 215177633Sdfr } 216184588Sdfr 217177633Sdfr if (badops) 218184588Sdfr { 219184588Sdfrbad: 220184588Sdfr BIO_printf(bio_err,"%s [options] [bits] <infile >outfile\n",prog); 221177633Sdfr BIO_printf(bio_err,"where options are\n"); 222177633Sdfr BIO_printf(bio_err," -inform arg input format - DER or PEM\n"); 223177633Sdfr BIO_printf(bio_err," -outform arg output format - DER or PEM\n"); 224184588Sdfr BIO_printf(bio_err," -in arg input file\n"); 225184588Sdfr BIO_printf(bio_err," -out arg output file\n"); 226184588Sdfr BIO_printf(bio_err," -text print as text\n"); 227184588Sdfr BIO_printf(bio_err," -C Output C code\n"); 228177633Sdfr BIO_printf(bio_err," -noout no output\n"); 229177633Sdfr BIO_printf(bio_err," -genkey generate a DSA key\n"); 230177633Sdfr BIO_printf(bio_err," -rand files to use for random number input\n"); 231177633Sdfr#ifndef OPENSSL_NO_ENGINE 232184588Sdfr BIO_printf(bio_err," -engine e use engine e, possibly a hardware device.\n"); 233184588Sdfr#endif 234177633Sdfr#ifdef GENCB_TEST 235184588Sdfr BIO_printf(bio_err," -timebomb n interrupt keygen after <n> seconds\n"); 236177633Sdfr#endif 237184588Sdfr BIO_printf(bio_err," number number of bits to use for generating private key\n"); 238177633Sdfr goto end; 239177633Sdfr } 240248195Sglebius 241177633Sdfr ERR_load_crypto_strings(); 242184588Sdfr 243184588Sdfr in=BIO_new(BIO_s_file()); 244184588Sdfr out=BIO_new(BIO_s_file()); 245184588Sdfr if ((in == NULL) || (out == NULL)) 246184588Sdfr { 247184588Sdfr ERR_print_errors(bio_err); 248184588Sdfr goto end; 249184588Sdfr } 250184588Sdfr 251184588Sdfr if (infile == NULL) 252184588Sdfr BIO_set_fp(in,stdin,BIO_NOCLOSE); 253184588Sdfr else 254184588Sdfr { 255177633Sdfr if (BIO_read_filename(in,infile) <= 0) 256184588Sdfr { 257177633Sdfr perror(infile); 258177633Sdfr goto end; 259177633Sdfr } 260177633Sdfr } 261177633Sdfr if (outfile == NULL) 262177633Sdfr { 263177633Sdfr BIO_set_fp(out,stdout,BIO_NOCLOSE); 264177633Sdfr#ifdef OPENSSL_SYS_VMS 265184588Sdfr { 266177633Sdfr BIO *tmpbio = BIO_new(BIO_f_linebuffer()); 267177633Sdfr out = BIO_push(tmpbio, out); 268177633Sdfr } 269177633Sdfr#endif 270177633Sdfr } 271177633Sdfr else 272177633Sdfr { 273177633Sdfr if (BIO_write_filename(out,outfile) <= 0) 274184588Sdfr { 275177633Sdfr perror(outfile); 276193272Sjhb goto end; 277177633Sdfr } 278177633Sdfr } 279184588Sdfr 280177633Sdfr#ifndef OPENSSL_NO_ENGINE 281177633Sdfr e = setup_engine(bio_err, engine, 0); 282177633Sdfr#endif 283184588Sdfr 284184588Sdfr if (need_rand) 285184588Sdfr { 286177633Sdfr app_RAND_load_file(NULL, bio_err, (inrand != NULL)); 287177633Sdfr if (inrand != NULL) 288177633Sdfr BIO_printf(bio_err,"%ld semi-random bytes loaded\n", 289177633Sdfr app_RAND_load_files(inrand)); 290177633Sdfr } 291177633Sdfr 292177633Sdfr if (numbits > 0) 293177633Sdfr { 294177633Sdfr BN_GENCB cb; 295177633Sdfr BN_GENCB_set(&cb, dsa_cb, bio_err); 296177633Sdfr assert(need_rand); 297177633Sdfr dsa = DSA_new(); 298177633Sdfr if(!dsa) 299193272Sjhb { 300177633Sdfr BIO_printf(bio_err,"Error allocating DSA object\n"); 301177633Sdfr goto end; 302177633Sdfr } 303177633Sdfr BIO_printf(bio_err,"Generating DSA parameters, %d bit long prime\n",num); 304177633Sdfr BIO_printf(bio_err,"This could take some time\n"); 305193272Sjhb#ifdef GENCB_TEST 306177633Sdfr if(timebomb > 0) 307 { 308 struct sigaction act; 309 act.sa_handler = timebomb_sigalarm; 310 act.sa_flags = 0; 311 BIO_printf(bio_err,"(though I'll stop it if not done within %d secs)\n", 312 timebomb); 313 if(sigaction(SIGALRM, &act, NULL) != 0) 314 { 315 BIO_printf(bio_err,"Error, couldn't set SIGALRM handler\n"); 316 goto end; 317 } 318 alarm(timebomb); 319 } 320#endif 321 if(!DSA_generate_parameters_ex(dsa,num,NULL,0,NULL,NULL, &cb)) 322 { 323#ifdef GENCB_TEST 324 if(stop_keygen_flag) 325 { 326 BIO_printf(bio_err,"DSA key generation time-stopped\n"); 327 /* This is an asked-for behaviour! */ 328 ret = 0; 329 goto end; 330 } 331#endif 332 BIO_printf(bio_err,"Error, DSA key generation failed\n"); 333 goto end; 334 } 335 } 336 else if (informat == FORMAT_ASN1) 337 dsa=d2i_DSAparams_bio(in,NULL); 338 else if (informat == FORMAT_PEM) 339 dsa=PEM_read_bio_DSAparams(in,NULL,NULL,NULL); 340 else 341 { 342 BIO_printf(bio_err,"bad input format specified\n"); 343 goto end; 344 } 345 if (dsa == NULL) 346 { 347 BIO_printf(bio_err,"unable to load DSA parameters\n"); 348 ERR_print_errors(bio_err); 349 goto end; 350 } 351 352 if (text) 353 { 354 DSAparams_print(out,dsa); 355 } 356 357 if (C) 358 { 359 unsigned char *data; 360 int l,len,bits_p,bits_q,bits_g; 361 362 len=BN_num_bytes(dsa->p); 363 bits_p=BN_num_bits(dsa->p); 364 bits_q=BN_num_bits(dsa->q); 365 bits_g=BN_num_bits(dsa->g); 366 data=(unsigned char *)OPENSSL_malloc(len+20); 367 if (data == NULL) 368 { 369 perror("OPENSSL_malloc"); 370 goto end; 371 } 372 l=BN_bn2bin(dsa->p,data); 373 printf("static unsigned char dsa%d_p[]={",bits_p); 374 for (i=0; i<l; i++) 375 { 376 if ((i%12) == 0) printf("\n\t"); 377 printf("0x%02X,",data[i]); 378 } 379 printf("\n\t};\n"); 380 381 l=BN_bn2bin(dsa->q,data); 382 printf("static unsigned char dsa%d_q[]={",bits_p); 383 for (i=0; i<l; i++) 384 { 385 if ((i%12) == 0) printf("\n\t"); 386 printf("0x%02X,",data[i]); 387 } 388 printf("\n\t};\n"); 389 390 l=BN_bn2bin(dsa->g,data); 391 printf("static unsigned char dsa%d_g[]={",bits_p); 392 for (i=0; i<l; i++) 393 { 394 if ((i%12) == 0) printf("\n\t"); 395 printf("0x%02X,",data[i]); 396 } 397 printf("\n\t};\n\n"); 398 399 printf("DSA *get_dsa%d()\n\t{\n",bits_p); 400 printf("\tDSA *dsa;\n\n"); 401 printf("\tif ((dsa=DSA_new()) == NULL) return(NULL);\n"); 402 printf("\tdsa->p=BN_bin2bn(dsa%d_p,sizeof(dsa%d_p),NULL);\n", 403 bits_p,bits_p); 404 printf("\tdsa->q=BN_bin2bn(dsa%d_q,sizeof(dsa%d_q),NULL);\n", 405 bits_p,bits_p); 406 printf("\tdsa->g=BN_bin2bn(dsa%d_g,sizeof(dsa%d_g),NULL);\n", 407 bits_p,bits_p); 408 printf("\tif ((dsa->p == NULL) || (dsa->q == NULL) || (dsa->g == NULL))\n"); 409 printf("\t\t{ DSA_free(dsa); return(NULL); }\n"); 410 printf("\treturn(dsa);\n\t}\n"); 411 } 412 413 414 if (!noout) 415 { 416 if (outformat == FORMAT_ASN1) 417 i=i2d_DSAparams_bio(out,dsa); 418 else if (outformat == FORMAT_PEM) 419 i=PEM_write_bio_DSAparams(out,dsa); 420 else { 421 BIO_printf(bio_err,"bad output format specified for outfile\n"); 422 goto end; 423 } 424 if (!i) 425 { 426 BIO_printf(bio_err,"unable to write DSA parameters\n"); 427 ERR_print_errors(bio_err); 428 goto end; 429 } 430 } 431 if (genkey) 432 { 433 DSA *dsakey; 434 435 assert(need_rand); 436 if ((dsakey=DSAparams_dup(dsa)) == NULL) goto end; 437 if (!DSA_generate_key(dsakey)) goto end; 438 if (outformat == FORMAT_ASN1) 439 i=i2d_DSAPrivateKey_bio(out,dsakey); 440 else if (outformat == FORMAT_PEM) 441 i=PEM_write_bio_DSAPrivateKey(out,dsakey,NULL,NULL,0,NULL,NULL); 442 else { 443 BIO_printf(bio_err,"bad output format specified for outfile\n"); 444 goto end; 445 } 446 DSA_free(dsakey); 447 } 448 if (need_rand) 449 app_RAND_write_file(NULL, bio_err); 450 ret=0; 451end: 452 if (in != NULL) BIO_free(in); 453 if (out != NULL) BIO_free_all(out); 454 if (dsa != NULL) DSA_free(dsa); 455 apps_shutdown(); 456 OPENSSL_EXIT(ret); 457 } 458 459static int MS_CALLBACK dsa_cb(int p, int n, BN_GENCB *cb) 460 { 461 char c='*'; 462 463 if (p == 0) c='.'; 464 if (p == 1) c='+'; 465 if (p == 2) c='*'; 466 if (p == 3) c='\n'; 467 BIO_write(cb->arg,&c,1); 468 (void)BIO_flush(cb->arg); 469#ifdef LINT 470 p=n; 471#endif 472#ifdef GENCB_TEST 473 if(stop_keygen_flag) 474 return 0; 475#endif 476 return 1; 477 } 478#else /* !OPENSSL_NO_DSA */ 479 480# if PEDANTIC 481static void *dummy=&dummy; 482# endif 483 484#endif 485