dsa.c revision 296465
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/evp.h> 69# include <openssl/x509.h> 70# include <openssl/pem.h> 71# include <openssl/bn.h> 72# include <openssl/dsa.h> 73 74# undef PROG 75# define PROG dsa_main 76 77/*- 78 * -inform arg - input format - default PEM (one of DER, NET or PEM) 79 * -outform arg - output format - default PEM 80 * -in arg - input file - default stdin 81 * -out arg - output file - default stdout 82 * -des - encrypt output if PEM format with DES in cbc mode 83 * -des3 - encrypt output if PEM format 84 * -idea - encrypt output if PEM format 85 * -aes128 - encrypt output if PEM format 86 * -aes192 - encrypt output if PEM format 87 * -aes256 - encrypt output if PEM format 88 * -camellia128 - encrypt output if PEM format 89 * -camellia192 - encrypt output if PEM format 90 * -camellia256 - encrypt output if PEM format 91 * -seed - encrypt output if PEM format 92 * -text - print a text version 93 * -modulus - print the DSA public key 94 */ 95 96int MAIN(int, char **); 97 98int MAIN(int argc, char **argv) 99{ 100 ENGINE *e = NULL; 101 int ret = 1; 102 DSA *dsa = NULL; 103 int i, badops = 0; 104 const EVP_CIPHER *enc = NULL; 105 BIO *in = NULL, *out = NULL; 106 int informat, outformat, text = 0, noout = 0; 107 int pubin = 0, pubout = 0; 108 char *infile, *outfile, *prog; 109# ifndef OPENSSL_NO_ENGINE 110 char *engine; 111# endif 112 char *passargin = NULL, *passargout = NULL; 113 char *passin = NULL, *passout = NULL; 114 int modulus = 0; 115 116 apps_startup(); 117 118 if (bio_err == NULL) 119 if ((bio_err = BIO_new(BIO_s_file())) != NULL) 120 BIO_set_fp(bio_err, stderr, BIO_NOCLOSE | BIO_FP_TEXT); 121 122 if (!load_config(bio_err, NULL)) 123 goto end; 124 125# ifndef OPENSSL_NO_ENGINE 126 engine = NULL; 127# endif 128 infile = NULL; 129 outfile = NULL; 130 informat = FORMAT_PEM; 131 outformat = FORMAT_PEM; 132 133 prog = argv[0]; 134 argc--; 135 argv++; 136 while (argc >= 1) { 137 if (strcmp(*argv, "-inform") == 0) { 138 if (--argc < 1) 139 goto bad; 140 informat = str2fmt(*(++argv)); 141 } else if (strcmp(*argv, "-outform") == 0) { 142 if (--argc < 1) 143 goto bad; 144 outformat = str2fmt(*(++argv)); 145 } else if (strcmp(*argv, "-in") == 0) { 146 if (--argc < 1) 147 goto bad; 148 infile = *(++argv); 149 } else if (strcmp(*argv, "-out") == 0) { 150 if (--argc < 1) 151 goto bad; 152 outfile = *(++argv); 153 } else if (strcmp(*argv, "-passin") == 0) { 154 if (--argc < 1) 155 goto bad; 156 passargin = *(++argv); 157 } else if (strcmp(*argv, "-passout") == 0) { 158 if (--argc < 1) 159 goto bad; 160 passargout = *(++argv); 161 } 162# ifndef OPENSSL_NO_ENGINE 163 else if (strcmp(*argv, "-engine") == 0) { 164 if (--argc < 1) 165 goto bad; 166 engine = *(++argv); 167 } 168# endif 169 else if (strcmp(*argv, "-noout") == 0) 170 noout = 1; 171 else if (strcmp(*argv, "-text") == 0) 172 text = 1; 173 else if (strcmp(*argv, "-modulus") == 0) 174 modulus = 1; 175 else if (strcmp(*argv, "-pubin") == 0) 176 pubin = 1; 177 else if (strcmp(*argv, "-pubout") == 0) 178 pubout = 1; 179 else if ((enc = EVP_get_cipherbyname(&(argv[0][1]))) == NULL) { 180 BIO_printf(bio_err, "unknown option %s\n", *argv); 181 badops = 1; 182 break; 183 } 184 argc--; 185 argv++; 186 } 187 188 if (badops) { 189 bad: 190 BIO_printf(bio_err, "%s [options] <infile >outfile\n", prog); 191 BIO_printf(bio_err, "where options are\n"); 192 BIO_printf(bio_err, " -inform arg input format - DER or PEM\n"); 193 BIO_printf(bio_err, " -outform arg output format - DER or PEM\n"); 194 BIO_printf(bio_err, " -in arg input file\n"); 195 BIO_printf(bio_err, 196 " -passin arg input file pass phrase source\n"); 197 BIO_printf(bio_err, " -out arg output file\n"); 198 BIO_printf(bio_err, 199 " -passout arg output file pass phrase source\n"); 200# ifndef OPENSSL_NO_ENGINE 201 BIO_printf(bio_err, 202 " -engine e use engine e, possibly a hardware device.\n"); 203# endif 204 BIO_printf(bio_err, 205 " -des encrypt PEM output with cbc des\n"); 206 BIO_printf(bio_err, 207 " -des3 encrypt PEM output with ede cbc des using 168 bit key\n"); 208# ifndef OPENSSL_NO_IDEA 209 BIO_printf(bio_err, 210 " -idea encrypt PEM output with cbc idea\n"); 211# endif 212# ifndef OPENSSL_NO_AES 213 BIO_printf(bio_err, " -aes128, -aes192, -aes256\n"); 214 BIO_printf(bio_err, 215 " encrypt PEM output with cbc aes\n"); 216# endif 217# ifndef OPENSSL_NO_CAMELLIA 218 BIO_printf(bio_err, " -camellia128, -camellia192, -camellia256\n"); 219 BIO_printf(bio_err, 220 " encrypt PEM output with cbc camellia\n"); 221# endif 222# ifndef OPENSSL_NO_SEED 223 BIO_printf(bio_err, 224 " -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 out = BIO_new(BIO_s_file()); 244 if (out == NULL) { 245 ERR_print_errors(bio_err); 246 goto end; 247 } 248 249 BIO_printf(bio_err, "read DSA key\n"); 250 { 251 EVP_PKEY *pkey; 252 if (pubin) 253 pkey = load_pubkey(bio_err, infile, informat, 1, 254 passin, e, "Public Key"); 255 else 256 pkey = load_key(bio_err, infile, informat, 1, 257 passin, e, "Private Key"); 258 259 if (pkey != NULL) 260 dsa = pkey == NULL ? NULL : EVP_PKEY_get1_DSA(pkey); 261 EVP_PKEY_free(pkey); 262 } 263 if (dsa == NULL) { 264 BIO_printf(bio_err, "unable to load Key\n"); 265 ERR_print_errors(bio_err); 266 goto end; 267 } 268 269 if (outfile == NULL) { 270 BIO_set_fp(out, stdout, BIO_NOCLOSE); 271# ifdef OPENSSL_SYS_VMS 272 { 273 BIO *tmpbio = BIO_new(BIO_f_linebuffer()); 274 out = BIO_push(tmpbio, out); 275 } 276# endif 277 } else { 278 if (BIO_write_filename(out, outfile) <= 0) { 279 perror(outfile); 280 goto end; 281 } 282 } 283 284 if (text) 285 if (!DSA_print(out, dsa, 0)) { 286 perror(outfile); 287 ERR_print_errors(bio_err); 288 goto end; 289 } 290 291 if (modulus) { 292 fprintf(stdout, "Public Key="); 293 BN_print(out, dsa->pub_key); 294 fprintf(stdout, "\n"); 295 } 296 297 if (noout) 298 goto end; 299 BIO_printf(bio_err, "writing DSA key\n"); 300 if (outformat == FORMAT_ASN1) { 301 if (pubin || pubout) 302 i = i2d_DSA_PUBKEY_bio(out, dsa); 303 else 304 i = i2d_DSAPrivateKey_bio(out, dsa); 305 } else if (outformat == FORMAT_PEM) { 306 if (pubin || pubout) 307 i = PEM_write_bio_DSA_PUBKEY(out, dsa); 308 else 309 i = PEM_write_bio_DSAPrivateKey(out, dsa, enc, 310 NULL, 0, NULL, passout); 311 } else { 312 BIO_printf(bio_err, "bad output format specified for outfile\n"); 313 goto end; 314 } 315 if (!i) { 316 BIO_printf(bio_err, "unable to write private key\n"); 317 ERR_print_errors(bio_err); 318 } else 319 ret = 0; 320 end: 321 if (in != NULL) 322 BIO_free(in); 323 if (out != NULL) 324 BIO_free_all(out); 325 if (dsa != NULL) 326 DSA_free(dsa); 327 if (passin) 328 OPENSSL_free(passin); 329 if (passout) 330 OPENSSL_free(passout); 331 apps_shutdown(); 332 OPENSSL_EXIT(ret); 333} 334#endif 335