gendsa.c revision 162911
1/* apps/gendsa.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 <string.h> 63#include <sys/types.h> 64#include <sys/stat.h> 65#include "apps.h" 66#include <openssl/bio.h> 67#include <openssl/err.h> 68#include <openssl/bn.h> 69#include <openssl/dsa.h> 70#include <openssl/x509.h> 71#include <openssl/pem.h> 72 73#define DEFBITS 512 74#undef PROG 75#define PROG gendsa_main 76 77int MAIN(int, char **); 78 79int MAIN(int argc, char **argv) 80 { 81#ifndef OPENSSL_NO_ENGINE 82 ENGINE *e = NULL; 83#endif 84 DSA *dsa=NULL; 85 int ret=1; 86 char *outfile=NULL; 87 char *inrand=NULL,*dsaparams=NULL; 88 char *passargout = NULL, *passout = NULL; 89 BIO *out=NULL,*in=NULL; 90 const EVP_CIPHER *enc=NULL; 91#ifndef OPENSSL_NO_ENGINE 92 char *engine=NULL; 93#endif 94 95 apps_startup(); 96 97 if (bio_err == NULL) 98 if ((bio_err=BIO_new(BIO_s_file())) != NULL) 99 BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT); 100 101 if (!load_config(bio_err, NULL)) 102 goto end; 103 104 argv++; 105 argc--; 106 for (;;) 107 { 108 if (argc <= 0) break; 109 if (strcmp(*argv,"-out") == 0) 110 { 111 if (--argc < 1) goto bad; 112 outfile= *(++argv); 113 } 114 else if (strcmp(*argv,"-passout") == 0) 115 { 116 if (--argc < 1) goto bad; 117 passargout= *(++argv); 118 } 119#ifndef OPENSSL_NO_ENGINE 120 else if (strcmp(*argv,"-engine") == 0) 121 { 122 if (--argc < 1) goto bad; 123 engine= *(++argv); 124 } 125#endif 126 else if (strcmp(*argv,"-rand") == 0) 127 { 128 if (--argc < 1) goto bad; 129 inrand= *(++argv); 130 } 131 else if (strcmp(*argv,"-") == 0) 132 goto bad; 133#ifndef OPENSSL_NO_DES 134 else if (strcmp(*argv,"-des") == 0) 135 enc=EVP_des_cbc(); 136 else if (strcmp(*argv,"-des3") == 0) 137 enc=EVP_des_ede3_cbc(); 138#endif 139#ifndef OPENSSL_NO_IDEA 140 else if (strcmp(*argv,"-idea") == 0) 141 enc=EVP_idea_cbc(); 142#endif 143#ifndef OPENSSL_NO_AES 144 else if (strcmp(*argv,"-aes128") == 0) 145 enc=EVP_aes_128_cbc(); 146 else if (strcmp(*argv,"-aes192") == 0) 147 enc=EVP_aes_192_cbc(); 148 else if (strcmp(*argv,"-aes256") == 0) 149 enc=EVP_aes_256_cbc(); 150#endif 151#ifndef OPENSSL_NO_CAMELLIA 152 else if (strcmp(*argv,"-camellia128") == 0) 153 enc=EVP_camellia_128_cbc(); 154 else if (strcmp(*argv,"-camellia192") == 0) 155 enc=EVP_camellia_192_cbc(); 156 else if (strcmp(*argv,"-camellia256") == 0) 157 enc=EVP_camellia_256_cbc(); 158#endif 159 else if (**argv != '-' && dsaparams == NULL) 160 { 161 dsaparams = *argv; 162 } 163 else 164 goto bad; 165 argv++; 166 argc--; 167 } 168 169 if (dsaparams == NULL) 170 { 171bad: 172 BIO_printf(bio_err,"usage: gendsa [args] dsaparam-file\n"); 173 BIO_printf(bio_err," -out file - output the key to 'file'\n"); 174#ifndef OPENSSL_NO_DES 175 BIO_printf(bio_err," -des - encrypt the generated key with DES in cbc mode\n"); 176 BIO_printf(bio_err," -des3 - encrypt the generated key with DES in ede cbc mode (168 bit key)\n"); 177#endif 178#ifndef OPENSSL_NO_IDEA 179 BIO_printf(bio_err," -idea - encrypt the generated key with IDEA in cbc mode\n"); 180#endif 181#ifndef OPENSSL_NO_AES 182 BIO_printf(bio_err," -aes128, -aes192, -aes256\n"); 183 BIO_printf(bio_err," encrypt PEM output with cbc aes\n"); 184#endif 185#ifndef OPENSSL_NO_CAMELLIA 186 BIO_printf(bio_err," -camellia128, -camellia192, -camellia256\n"); 187 BIO_printf(bio_err," encrypt PEM output with cbc camellia\n"); 188#endif 189#ifndef OPENSSL_NO_ENGINE 190 BIO_printf(bio_err," -engine e - use engine e, possibly a hardware device.\n"); 191#endif 192 BIO_printf(bio_err," -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR); 193 BIO_printf(bio_err," - load the file (or the files in the directory) into\n"); 194 BIO_printf(bio_err," the random number generator\n"); 195 BIO_printf(bio_err," dsaparam-file\n"); 196 BIO_printf(bio_err," - a DSA parameter file as generated by the dsaparam command\n"); 197 goto end; 198 } 199 200#ifndef OPENSSL_NO_ENGINE 201 e = setup_engine(bio_err, engine, 0); 202#endif 203 204 if(!app_passwd(bio_err, NULL, passargout, NULL, &passout)) { 205 BIO_printf(bio_err, "Error getting password\n"); 206 goto end; 207 } 208 209 210 in=BIO_new(BIO_s_file()); 211 if (!(BIO_read_filename(in,dsaparams))) 212 { 213 perror(dsaparams); 214 goto end; 215 } 216 217 if ((dsa=PEM_read_bio_DSAparams(in,NULL,NULL,NULL)) == NULL) 218 { 219 BIO_printf(bio_err,"unable to load DSA parameter file\n"); 220 goto end; 221 } 222 BIO_free(in); 223 in = NULL; 224 225 out=BIO_new(BIO_s_file()); 226 if (out == NULL) goto end; 227 228 if (outfile == NULL) 229 { 230 BIO_set_fp(out,stdout,BIO_NOCLOSE); 231#ifdef OPENSSL_SYS_VMS 232 { 233 BIO *tmpbio = BIO_new(BIO_f_linebuffer()); 234 out = BIO_push(tmpbio, out); 235 } 236#endif 237 } 238 else 239 { 240 if (BIO_write_filename(out,outfile) <= 0) 241 { 242 perror(outfile); 243 goto end; 244 } 245 } 246 247 if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL) 248 { 249 BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n"); 250 } 251 if (inrand != NULL) 252 BIO_printf(bio_err,"%ld semi-random bytes loaded\n", 253 app_RAND_load_files(inrand)); 254 255 BIO_printf(bio_err,"Generating DSA key, %d bits\n", 256 BN_num_bits(dsa->p)); 257 if (!DSA_generate_key(dsa)) goto end; 258 259 app_RAND_write_file(NULL, bio_err); 260 261 if (!PEM_write_bio_DSAPrivateKey(out,dsa,enc,NULL,0,NULL, passout)) 262 goto end; 263 ret=0; 264end: 265 if (ret != 0) 266 ERR_print_errors(bio_err); 267 if (in != NULL) BIO_free(in); 268 if (out != NULL) BIO_free_all(out); 269 if (dsa != NULL) DSA_free(dsa); 270 if(passout) OPENSSL_free(passout); 271 apps_shutdown(); 272 OPENSSL_EXIT(ret); 273 } 274#endif 275