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 #ifndef OPENSSL_NO_DSA 60 #include <stdio.h> 61 #include <string.h> 62 #include <sys/types.h> 63 #include <sys/stat.h> 64 #include "apps.h" 65 #include <openssl/bio.h> 66 #include <openssl/err.h> 67 #include <openssl/bn.h> 68 #include <openssl/dsa.h> 69 #include <openssl/x509.h> 70 #include <openssl/pem.h> 71 72 #define DEFBITS 512 73 #undef PROG 74 #define PROG gendsa_main 75 76 int MAIN(int, char **); 77 78 int MAIN(int argc, char **argv) 79 { 80 #ifndef OPENSSL_NO_ENGINE 81 ENGINE *e = NULL; 82 #endif 83 DSA *dsa=NULL; 84 int ret=1; 85 char *outfile=NULL; 86 char *inrand=NULL,*dsaparams=NULL; 87 char *passargout = NULL, *passout = NULL; 88 BIO *out=NULL,*in=NULL; 89 const EVP_CIPHER *enc=NULL; 90 #ifndef OPENSSL_NO_ENGINE 91 char *engine=NULL; 92 #endif 93 94 apps_startup(); 95 96 if (bio_err == NULL) 97 if ((bio_err=BIO_new(BIO_s_file())) != NULL) 98 BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT); 99 100 if (!load_config(bio_err, NULL)) 101 goto end; 102 103 argv++; 104 argc--; 105 for (;;) 106 { 107 if (argc <= 0) break; 108 if (strcmp(*argv,"-out") == 0) 109 { 110 if (--argc < 1) goto bad; 111 outfile= *(++argv); 112 } 113 else if (strcmp(*argv,"-passout") == 0) 114 { 115 if (--argc < 1) goto bad; 116 passargout= *(++argv); 117 } 118 #ifndef OPENSSL_NO_ENGINE 119 else if (strcmp(*argv,"-engine") == 0) 120 { 121 if (--argc < 1) goto bad; 122 engine= *(++argv); 123 } 124 #endif 125 else if (strcmp(*argv,"-rand") == 0) 126 { 127 if (--argc < 1) goto bad; 128 inrand= *(++argv); 129 } 130 else if (strcmp(*argv,"-") == 0) 131 goto bad; 132 #ifndef OPENSSL_NO_DES 133 else if (strcmp(*argv,"-des") == 0) 134 enc=EVP_des_cbc(); 135 else if (strcmp(*argv,"-des3") == 0) 136 enc=EVP_des_ede3_cbc(); 137 #endif 138 #ifndef OPENSSL_NO_IDEA 139 else if (strcmp(*argv,"-idea") == 0) 140 enc=EVP_idea_cbc(); 141 #endif 142 #ifndef OPENSSL_NO_AES 143 else if (strcmp(*argv,"-aes128") == 0) 144 enc=EVP_aes_128_cbc(); 145 else if (strcmp(*argv,"-aes192") == 0) 146 enc=EVP_aes_192_cbc(); 147 else if (strcmp(*argv,"-aes256") == 0) 148 enc=EVP_aes_256_cbc(); 149 #endif 150 else if (**argv != '-' && dsaparams == NULL) 151 { 152 dsaparams = *argv; 153 } 154 else 155 goto bad; 156 argv++; 157 argc--; 158 } 159 160 if (dsaparams == NULL) 161 { 162 bad: 163 BIO_printf(bio_err,"usage: gendsa [args] dsaparam-file\n"); 164 BIO_printf(bio_err," -out file - output the key to 'file'\n"); 165 #ifndef OPENSSL_NO_DES 166 BIO_printf(bio_err," -des - encrypt the generated key with DES in cbc mode\n"); 167 BIO_printf(bio_err," -des3 - encrypt the generated key with DES in ede cbc mode (168 bit key)\n"); 168 #endif 169 #ifndef OPENSSL_NO_IDEA 170 BIO_printf(bio_err," -idea - encrypt the generated key with IDEA in cbc mode\n"); 171 #endif 172 #ifndef OPENSSL_NO_AES 173 BIO_printf(bio_err," -aes128, -aes192, -aes256\n"); 174 BIO_printf(bio_err," encrypt PEM output with cbc aes\n"); 175 #endif 176 #ifndef OPENSSL_NO_ENGINE 177 BIO_printf(bio_err," -engine e - use engine e, possibly a hardware device.\n"); 178 #endif 179 BIO_printf(bio_err," -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR); 180 BIO_printf(bio_err," - load the file (or the files in the directory) into\n"); 181 BIO_printf(bio_err," the random number generator\n"); 182 BIO_printf(bio_err," dsaparam-file\n"); 183 BIO_printf(bio_err," - a DSA parameter file as generated by the dsaparam command\n"); 184 goto end; 185 } 186 187 #ifndef OPENSSL_NO_ENGINE 188 e = setup_engine(bio_err, engine, 0); 189 #endif 190 191 if(!app_passwd(bio_err, NULL, passargout, NULL, &passout)) { 192 BIO_printf(bio_err, "Error getting password\n"); 193 goto end; 194 } 195 196 197 in=BIO_new(BIO_s_file()); 198 if (!(BIO_read_filename(in,dsaparams))) 199 { 200 perror(dsaparams); 201 goto end; 202 } 203 204 if ((dsa=PEM_read_bio_DSAparams(in,NULL,NULL,NULL)) == NULL) 205 { 206 BIO_printf(bio_err,"unable to load DSA parameter file\n"); 207 goto end; 208 } 209 BIO_free(in); 210 in = NULL; 211 212 out=BIO_new(BIO_s_file()); 213 if (out == NULL) goto end; 214 215 if (outfile == NULL) 216 { 217 BIO_set_fp(out,stdout,BIO_NOCLOSE); 218 #ifdef OPENSSL_SYS_VMS 219 { 220 BIO *tmpbio = BIO_new(BIO_f_linebuffer()); 221 out = BIO_push(tmpbio, out); 222 } 223 #endif 224 } 225 else 226 { 227 if (BIO_write_filename(out,outfile) <= 0) 228 { 229 perror(outfile); 230 goto end; 231 } 232 } 233 234 if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL) 235 { 236 BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n"); 237 } 238 if (inrand != NULL) 239 BIO_printf(bio_err,"%ld semi-random bytes loaded\n", 240 app_RAND_load_files(inrand)); 241 242 BIO_printf(bio_err,"Generating DSA key, %d bits\n", 243 BN_num_bits(dsa->p)); 244 if (!DSA_generate_key(dsa)) goto end; 245 246 app_RAND_write_file(NULL, bio_err); 247 248 if (!PEM_write_bio_DSAPrivateKey(out,dsa,enc,NULL,0,NULL, passout)) 249 goto end; 250 ret=0; 251 end: 252 if (ret != 0) 253 ERR_print_errors(bio_err); 254 if (in != NULL) BIO_free(in); 255 if (out != NULL) BIO_free_all(out); 256 if (dsa != NULL) DSA_free(dsa); 257 if(passout) OPENSSL_free(passout); 258 apps_shutdown(); 259 OPENSSL_EXIT(ret); 260 } 261 #endif 262