dsa.c revision 656d9c7f52f88b3a3daccafa7655dec086c4756e
1/* apps/dsa.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#ifndef OPENSSL_NO_DSA 61#include <stdio.h> 62#include <stdlib.h> 63#include <string.h> 64#include <time.h> 65#include "apps.h" 66#include <openssl/bio.h> 67#include <openssl/err.h> 68#include <openssl/dsa.h> 69#include <openssl/evp.h> 70#include <openssl/x509.h> 71#include <openssl/pem.h> 72#include <openssl/bn.h> 73 74#undef PROG 75#define PROG dsa_main 76 77/* -inform arg - input format - default PEM (one of DER, NET or PEM) 78 * -outform arg - output format - default PEM 79 * -in arg - input file - default stdin 80 * -out arg - output file - default stdout 81 * -des - encrypt output if PEM format with DES in cbc mode 82 * -des3 - encrypt output if PEM format 83 * -idea - encrypt output if PEM format 84 * -aes128 - encrypt output if PEM format 85 * -aes192 - encrypt output if PEM format 86 * -aes256 - encrypt output if PEM format 87 * -camellia128 - encrypt output if PEM format 88 * -camellia192 - encrypt output if PEM format 89 * -camellia256 - encrypt output if PEM format 90 * -seed - encrypt output if PEM format 91 * -text - print a text version 92 * -modulus - print the DSA public key 93 */ 94 95int MAIN(int, char **); 96 97int MAIN(int argc, char **argv) 98 { 99#ifndef OPENSSL_NO_ENGINE 100 ENGINE *e = NULL; 101#endif 102 int ret=1; 103 DSA *dsa=NULL; 104 int i,badops=0; 105 const EVP_CIPHER *enc=NULL; 106 BIO *in=NULL,*out=NULL; 107 int informat,outformat,text=0,noout=0; 108 int pubin = 0, pubout = 0; 109 char *infile,*outfile,*prog; 110#ifndef OPENSSL_NO_ENGINE 111 char *engine; 112#endif 113 char *passargin = NULL, *passargout = NULL; 114 char *passin = NULL, *passout = NULL; 115 int modulus=0; 116 117 apps_startup(); 118 119 if (bio_err == NULL) 120 if ((bio_err=BIO_new(BIO_s_file())) != NULL) 121 BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT); 122 123 if (!load_config(bio_err, NULL)) 124 goto end; 125 126#ifndef OPENSSL_NO_ENGINE 127 engine=NULL; 128#endif 129 infile=NULL; 130 outfile=NULL; 131 informat=FORMAT_PEM; 132 outformat=FORMAT_PEM; 133 134 prog=argv[0]; 135 argc--; 136 argv++; 137 while (argc >= 1) 138 { 139 if (strcmp(*argv,"-inform") == 0) 140 { 141 if (--argc < 1) goto bad; 142 informat=str2fmt(*(++argv)); 143 } 144 else if (strcmp(*argv,"-outform") == 0) 145 { 146 if (--argc < 1) goto bad; 147 outformat=str2fmt(*(++argv)); 148 } 149 else if (strcmp(*argv,"-in") == 0) 150 { 151 if (--argc < 1) goto bad; 152 infile= *(++argv); 153 } 154 else if (strcmp(*argv,"-out") == 0) 155 { 156 if (--argc < 1) goto bad; 157 outfile= *(++argv); 158 } 159 else if (strcmp(*argv,"-passin") == 0) 160 { 161 if (--argc < 1) goto bad; 162 passargin= *(++argv); 163 } 164 else if (strcmp(*argv,"-passout") == 0) 165 { 166 if (--argc < 1) goto bad; 167 passargout= *(++argv); 168 } 169#ifndef OPENSSL_NO_ENGINE 170 else if (strcmp(*argv,"-engine") == 0) 171 { 172 if (--argc < 1) goto bad; 173 engine= *(++argv); 174 } 175#endif 176 else if (strcmp(*argv,"-noout") == 0) 177 noout=1; 178 else if (strcmp(*argv,"-text") == 0) 179 text=1; 180 else if (strcmp(*argv,"-modulus") == 0) 181 modulus=1; 182 else if (strcmp(*argv,"-pubin") == 0) 183 pubin=1; 184 else if (strcmp(*argv,"-pubout") == 0) 185 pubout=1; 186 else if ((enc=EVP_get_cipherbyname(&(argv[0][1]))) == NULL) 187 { 188 BIO_printf(bio_err,"unknown option %s\n",*argv); 189 badops=1; 190 break; 191 } 192 argc--; 193 argv++; 194 } 195 196 if (badops) 197 { 198bad: 199 BIO_printf(bio_err,"%s [options] <infile >outfile\n",prog); 200 BIO_printf(bio_err,"where options are\n"); 201 BIO_printf(bio_err," -inform arg input format - DER or PEM\n"); 202 BIO_printf(bio_err," -outform arg output format - DER or PEM\n"); 203 BIO_printf(bio_err," -in arg input file\n"); 204 BIO_printf(bio_err," -passin arg input file pass phrase source\n"); 205 BIO_printf(bio_err," -out arg output file\n"); 206 BIO_printf(bio_err," -passout arg output file pass phrase source\n"); 207#ifndef OPENSSL_NO_ENGINE 208 BIO_printf(bio_err," -engine e use engine e, possibly a hardware device.\n"); 209#endif 210 BIO_printf(bio_err," -des encrypt PEM output with cbc des\n"); 211 BIO_printf(bio_err," -des3 encrypt PEM output with ede cbc des using 168 bit key\n"); 212#ifndef OPENSSL_NO_IDEA 213 BIO_printf(bio_err," -idea encrypt PEM output with cbc idea\n"); 214#endif 215#ifndef OPENSSL_NO_AES 216 BIO_printf(bio_err," -aes128, -aes192, -aes256\n"); 217 BIO_printf(bio_err," encrypt PEM output with cbc aes\n"); 218#endif 219#ifndef OPENSSL_NO_CAMELLIA 220 BIO_printf(bio_err," -camellia128, -camellia192, -camellia256\n"); 221 BIO_printf(bio_err," encrypt PEM output with cbc camellia\n"); 222#endif 223#ifndef OPENSSL_NO_SEED 224 BIO_printf(bio_err," -seed encrypt PEM output with cbc seed\n"); 225#endif 226 BIO_printf(bio_err," -text print the key in text\n"); 227 BIO_printf(bio_err," -noout don't print key out\n"); 228 BIO_printf(bio_err," -modulus print the DSA public value\n"); 229 goto end; 230 } 231 232 ERR_load_crypto_strings(); 233 234#ifndef OPENSSL_NO_ENGINE 235 e = setup_engine(bio_err, engine, 0); 236#endif 237 238 if(!app_passwd(bio_err, passargin, passargout, &passin, &passout)) { 239 BIO_printf(bio_err, "Error getting passwords\n"); 240 goto end; 241 } 242 243 in=BIO_new(BIO_s_file()); 244 out=BIO_new(BIO_s_file()); 245 if ((in == NULL) || (out == NULL)) 246 { 247 ERR_print_errors(bio_err); 248 goto end; 249 } 250 251 if (infile == NULL) 252 BIO_set_fp(in,stdin,BIO_NOCLOSE); 253 else 254 { 255 if (BIO_read_filename(in,infile) <= 0) 256 { 257 perror(infile); 258 goto end; 259 } 260 } 261 262 BIO_printf(bio_err,"read DSA key\n"); 263 if (informat == FORMAT_ASN1) { 264 if(pubin) dsa=d2i_DSA_PUBKEY_bio(in,NULL); 265 else dsa=d2i_DSAPrivateKey_bio(in,NULL); 266 } else if (informat == FORMAT_PEM) { 267 if(pubin) dsa=PEM_read_bio_DSA_PUBKEY(in,NULL, NULL, NULL); 268 else dsa=PEM_read_bio_DSAPrivateKey(in,NULL,NULL,passin); 269 } else 270 { 271 BIO_printf(bio_err,"bad input format specified for key\n"); 272 goto end; 273 } 274 if (dsa == NULL) 275 { 276 BIO_printf(bio_err,"unable to load Key\n"); 277 ERR_print_errors(bio_err); 278 goto end; 279 } 280 281 if (outfile == NULL) 282 { 283 BIO_set_fp(out,stdout,BIO_NOCLOSE); 284#ifdef OPENSSL_SYS_VMS 285 { 286 BIO *tmpbio = BIO_new(BIO_f_linebuffer()); 287 out = BIO_push(tmpbio, out); 288 } 289#endif 290 } 291 else 292 { 293 if (BIO_write_filename(out,outfile) <= 0) 294 { 295 perror(outfile); 296 goto end; 297 } 298 } 299 300 if (text) 301 if (!DSA_print(out,dsa,0)) 302 { 303 perror(outfile); 304 ERR_print_errors(bio_err); 305 goto end; 306 } 307 308 if (modulus) 309 { 310 fprintf(stdout,"Public Key="); 311 BN_print(out,dsa->pub_key); 312 fprintf(stdout,"\n"); 313 } 314 315 if (noout) goto end; 316 BIO_printf(bio_err,"writing DSA key\n"); 317 if (outformat == FORMAT_ASN1) { 318 if(pubin || pubout) i=i2d_DSA_PUBKEY_bio(out,dsa); 319 else i=i2d_DSAPrivateKey_bio(out,dsa); 320 } else if (outformat == FORMAT_PEM) { 321 if(pubin || pubout) 322 i=PEM_write_bio_DSA_PUBKEY(out,dsa); 323 else i=PEM_write_bio_DSAPrivateKey(out,dsa,enc, 324 NULL,0,NULL, passout); 325 } else { 326 BIO_printf(bio_err,"bad output format specified for outfile\n"); 327 goto end; 328 } 329 if (!i) 330 { 331 BIO_printf(bio_err,"unable to write private key\n"); 332 ERR_print_errors(bio_err); 333 } 334 else 335 ret=0; 336end: 337 if(in != NULL) BIO_free(in); 338 if(out != NULL) BIO_free_all(out); 339 if(dsa != NULL) DSA_free(dsa); 340 if(passin) OPENSSL_free(passin); 341 if(passout) OPENSSL_free(passout); 342 apps_shutdown(); 343 OPENSSL_EXIT(ret); 344 } 345#endif 346