1 /* $OpenBSD: dsa.c,v 1.2 2014/08/28 14:23:52 jsing Exp $ */ 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 61 62 #include <stdio.h> 63 #include <stdlib.h> 64 #include <time.h> 65 #include <string.h> 66 67 #include "apps.h" 68 69 #include <openssl/bio.h> 70 #include <openssl/bn.h> 71 #include <openssl/dsa.h> 72 #include <openssl/err.h> 73 #include <openssl/evp.h> 74 #include <openssl/pem.h> 75 #include <openssl/x509.h> 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 95 int dsa_main(int, char **); 96 97 int 98 dsa_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 int pvk_encr = 2; 117 118 #ifndef OPENSSL_NO_ENGINE 119 engine = NULL; 120 #endif 121 infile = NULL; 122 outfile = NULL; 123 informat = FORMAT_PEM; 124 outformat = FORMAT_PEM; 125 126 prog = argv[0]; 127 argc--; 128 argv++; 129 while (argc >= 1) { 130 if (strcmp(*argv, "-inform") == 0) { 131 if (--argc < 1) 132 goto bad; 133 informat = str2fmt(*(++argv)); 134 } else if (strcmp(*argv, "-outform") == 0) { 135 if (--argc < 1) 136 goto bad; 137 outformat = str2fmt(*(++argv)); 138 } else if (strcmp(*argv, "-in") == 0) { 139 if (--argc < 1) 140 goto bad; 141 infile = *(++argv); 142 } else if (strcmp(*argv, "-out") == 0) { 143 if (--argc < 1) 144 goto bad; 145 outfile = *(++argv); 146 } else if (strcmp(*argv, "-passin") == 0) { 147 if (--argc < 1) 148 goto bad; 149 passargin = *(++argv); 150 } else if (strcmp(*argv, "-passout") == 0) { 151 if (--argc < 1) 152 goto bad; 153 passargout = *(++argv); 154 } 155 #ifndef OPENSSL_NO_ENGINE 156 else if (strcmp(*argv, "-engine") == 0) { 157 if (--argc < 1) 158 goto bad; 159 engine = *(++argv); 160 } 161 #endif 162 else if (strcmp(*argv, "-pvk-strong") == 0) 163 pvk_encr = 2; 164 else if (strcmp(*argv, "-pvk-weak") == 0) 165 pvk_encr = 1; 166 else if (strcmp(*argv, "-pvk-none") == 0) 167 pvk_encr = 0; 168 else if (strcmp(*argv, "-noout") == 0) 169 noout = 1; 170 else if (strcmp(*argv, "-text") == 0) 171 text = 1; 172 else if (strcmp(*argv, "-modulus") == 0) 173 modulus = 1; 174 else if (strcmp(*argv, "-pubin") == 0) 175 pubin = 1; 176 else if (strcmp(*argv, "-pubout") == 0) 177 pubout = 1; 178 else if ((enc = EVP_get_cipherbyname(&(argv[0][1]))) == NULL) { 179 BIO_printf(bio_err, "unknown option %s\n", *argv); 180 badops = 1; 181 break; 182 } 183 argc--; 184 argv++; 185 } 186 187 if (badops) { 188 bad: 189 BIO_printf(bio_err, "%s [options] <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, " -passin arg input file pass phrase source\n"); 195 BIO_printf(bio_err, " -out arg output file\n"); 196 BIO_printf(bio_err, " -passout arg output file pass phrase source\n"); 197 #ifndef OPENSSL_NO_ENGINE 198 BIO_printf(bio_err, " -engine e use engine e, possibly a hardware device.\n"); 199 #endif 200 BIO_printf(bio_err, " -des encrypt PEM output with cbc des\n"); 201 BIO_printf(bio_err, " -des3 encrypt PEM output with ede cbc des using 168 bit key\n"); 202 #ifndef OPENSSL_NO_IDEA 203 BIO_printf(bio_err, " -idea encrypt PEM output with cbc idea\n"); 204 #endif 205 #ifndef OPENSSL_NO_AES 206 BIO_printf(bio_err, " -aes128, -aes192, -aes256\n"); 207 BIO_printf(bio_err, " encrypt PEM output with cbc aes\n"); 208 #endif 209 #ifndef OPENSSL_NO_CAMELLIA 210 BIO_printf(bio_err, " -camellia128, -camellia192, -camellia256\n"); 211 BIO_printf(bio_err, " encrypt PEM output with cbc camellia\n"); 212 #endif 213 BIO_printf(bio_err, " -text print the key in text\n"); 214 BIO_printf(bio_err, " -noout don't print key out\n"); 215 BIO_printf(bio_err, " -modulus print the DSA public value\n"); 216 goto end; 217 } 218 219 #ifndef OPENSSL_NO_ENGINE 220 e = setup_engine(bio_err, engine, 0); 221 #endif 222 223 if (!app_passwd(bio_err, passargin, passargout, &passin, &passout)) { 224 BIO_printf(bio_err, "Error getting passwords\n"); 225 goto end; 226 } 227 in = BIO_new(BIO_s_file()); 228 out = BIO_new(BIO_s_file()); 229 if ((in == NULL) || (out == NULL)) { 230 ERR_print_errors(bio_err); 231 goto end; 232 } 233 if (infile == NULL) 234 BIO_set_fp(in, stdin, BIO_NOCLOSE); 235 else { 236 if (BIO_read_filename(in, infile) <= 0) { 237 perror(infile); 238 goto end; 239 } 240 } 241 242 BIO_printf(bio_err, "read DSA key\n"); 243 244 { 245 EVP_PKEY *pkey; 246 247 if (pubin) 248 pkey = load_pubkey(bio_err, infile, informat, 1, 249 passin, e, "Public Key"); 250 else 251 pkey = load_key(bio_err, infile, informat, 1, 252 passin, e, "Private Key"); 253 254 if (pkey) { 255 dsa = EVP_PKEY_get1_DSA(pkey); 256 EVP_PKEY_free(pkey); 257 } 258 } 259 if (dsa == NULL) { 260 BIO_printf(bio_err, "unable to load Key\n"); 261 ERR_print_errors(bio_err); 262 goto end; 263 } 264 if (outfile == NULL) { 265 BIO_set_fp(out, stdout, BIO_NOCLOSE); 266 } else { 267 if (BIO_write_filename(out, outfile) <= 0) { 268 perror(outfile); 269 goto end; 270 } 271 } 272 273 if (text) { 274 if (!DSA_print(out, dsa, 0)) { 275 perror(outfile); 276 ERR_print_errors(bio_err); 277 goto end; 278 } 279 } 280 if (modulus) { 281 fprintf(stdout, "Public Key="); 282 BN_print(out, dsa->pub_key); 283 fprintf(stdout, "\n"); 284 } 285 if (noout) 286 goto end; 287 BIO_printf(bio_err, "writing DSA key\n"); 288 if (outformat == FORMAT_ASN1) { 289 if (pubin || pubout) 290 i = i2d_DSA_PUBKEY_bio(out, dsa); 291 else 292 i = i2d_DSAPrivateKey_bio(out, dsa); 293 } else if (outformat == FORMAT_PEM) { 294 if (pubin || pubout) 295 i = PEM_write_bio_DSA_PUBKEY(out, dsa); 296 else 297 i = PEM_write_bio_DSAPrivateKey(out, dsa, enc, 298 NULL, 0, NULL, passout); 299 #if !defined(OPENSSL_NO_RSA) && !defined(OPENSSL_NO_RC4) 300 } else if (outformat == FORMAT_MSBLOB || outformat == FORMAT_PVK) { 301 EVP_PKEY *pk; 302 pk = EVP_PKEY_new(); 303 EVP_PKEY_set1_DSA(pk, dsa); 304 if (outformat == FORMAT_PVK) 305 i = i2b_PVK_bio(out, pk, pvk_encr, 0, passout); 306 else if (pubin || pubout) 307 i = i2b_PublicKey_bio(out, pk); 308 else 309 i = i2b_PrivateKey_bio(out, pk); 310 EVP_PKEY_free(pk); 311 #endif 312 } else { 313 BIO_printf(bio_err, "bad output format specified for outfile\n"); 314 goto end; 315 } 316 if (i <= 0) { 317 BIO_printf(bio_err, "unable to write private key\n"); 318 ERR_print_errors(bio_err); 319 } else 320 ret = 0; 321 end: 322 BIO_free(in); 323 if (out != NULL) 324 BIO_free_all(out); 325 if (dsa != NULL) 326 DSA_free(dsa); 327 free(passin); 328 free(passout); 329 330 return (ret); 331 } 332