1 /* apps/genrsa.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> 60 /* 61 * Until the key-gen callbacks are modified to use newer prototypes, we allow 62 * deprecated functions for openssl-internal code 63 */ 64 #ifdef OPENSSL_NO_DEPRECATED 65 # undef OPENSSL_NO_DEPRECATED 66 #endif 67 68 #ifndef OPENSSL_NO_RSA 69 # include <stdio.h> 70 # include <string.h> 71 # include <sys/types.h> 72 # include <sys/stat.h> 73 # include "apps.h" 74 # include <openssl/bio.h> 75 # include <openssl/err.h> 76 # include <openssl/bn.h> 77 # include <openssl/rsa.h> 78 # include <openssl/evp.h> 79 # include <openssl/x509.h> 80 # include <openssl/pem.h> 81 # include <openssl/rand.h> 82 83 # define DEFBITS 2048 84 # undef PROG 85 # define PROG genrsa_main 86 87 static int MS_CALLBACK genrsa_cb(int p, int n, BN_GENCB *cb); 88 89 int MAIN(int, char **); 90 91 int MAIN(int argc, char **argv) 92 { 93 BN_GENCB cb; 94 # ifndef OPENSSL_NO_ENGINE 95 ENGINE *e = NULL; 96 # endif 97 int ret = 1; 98 int i, num = DEFBITS; 99 long l; 100 const EVP_CIPHER *enc = NULL; 101 unsigned long f4 = RSA_F4; 102 char *outfile = NULL; 103 char *passargout = NULL, *passout = NULL; 104 # ifndef OPENSSL_NO_ENGINE 105 char *engine = NULL; 106 # endif 107 char *inrand = NULL; 108 BIO *out = NULL; 109 BIGNUM *bn = BN_new(); 110 RSA *rsa = NULL; 111 112 if (!bn) 113 goto err; 114 115 apps_startup(); 116 BN_GENCB_set(&cb, genrsa_cb, bio_err); 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 err; 124 if ((out = BIO_new(BIO_s_file())) == NULL) { 125 BIO_printf(bio_err, "unable to create BIO for output\n"); 126 goto err; 127 } 128 129 argv++; 130 argc--; 131 for (;;) { 132 if (argc <= 0) 133 break; 134 if (strcmp(*argv, "-out") == 0) { 135 if (--argc < 1) 136 goto bad; 137 outfile = *(++argv); 138 } else if (strcmp(*argv, "-3") == 0) 139 f4 = 3; 140 else if (strcmp(*argv, "-F4") == 0 || strcmp(*argv, "-f4") == 0) 141 f4 = RSA_F4; 142 # ifndef OPENSSL_NO_ENGINE 143 else if (strcmp(*argv, "-engine") == 0) { 144 if (--argc < 1) 145 goto bad; 146 engine = *(++argv); 147 } 148 # endif 149 else if (strcmp(*argv, "-rand") == 0) { 150 if (--argc < 1) 151 goto bad; 152 inrand = *(++argv); 153 } 154 # ifndef OPENSSL_NO_DES 155 else if (strcmp(*argv, "-des") == 0) 156 enc = EVP_des_cbc(); 157 else if (strcmp(*argv, "-des3") == 0) 158 enc = EVP_des_ede3_cbc(); 159 # endif 160 # ifndef OPENSSL_NO_IDEA 161 else if (strcmp(*argv, "-idea") == 0) 162 enc = EVP_idea_cbc(); 163 # endif 164 # ifndef OPENSSL_NO_SEED 165 else if (strcmp(*argv, "-seed") == 0) 166 enc = EVP_seed_cbc(); 167 # endif 168 # ifndef OPENSSL_NO_AES 169 else if (strcmp(*argv, "-aes128") == 0) 170 enc = EVP_aes_128_cbc(); 171 else if (strcmp(*argv, "-aes192") == 0) 172 enc = EVP_aes_192_cbc(); 173 else if (strcmp(*argv, "-aes256") == 0) 174 enc = EVP_aes_256_cbc(); 175 # endif 176 # ifndef OPENSSL_NO_CAMELLIA 177 else if (strcmp(*argv, "-camellia128") == 0) 178 enc = EVP_camellia_128_cbc(); 179 else if (strcmp(*argv, "-camellia192") == 0) 180 enc = EVP_camellia_192_cbc(); 181 else if (strcmp(*argv, "-camellia256") == 0) 182 enc = EVP_camellia_256_cbc(); 183 # endif 184 else if (strcmp(*argv, "-passout") == 0) { 185 if (--argc < 1) 186 goto bad; 187 passargout = *(++argv); 188 } else 189 break; 190 argv++; 191 argc--; 192 } 193 if ((argc >= 1) && ((sscanf(*argv, "%d", &num) == 0) || (num < 0))) { 194 bad: 195 BIO_printf(bio_err, "usage: genrsa [args] [numbits]\n"); 196 BIO_printf(bio_err, 197 " -des encrypt the generated key with DES in cbc mode\n"); 198 BIO_printf(bio_err, 199 " -des3 encrypt the generated key with DES in ede cbc mode (168 bit key)\n"); 200 # ifndef OPENSSL_NO_IDEA 201 BIO_printf(bio_err, 202 " -idea encrypt the generated key with IDEA in cbc mode\n"); 203 # endif 204 # ifndef OPENSSL_NO_SEED 205 BIO_printf(bio_err, " -seed\n"); 206 BIO_printf(bio_err, 207 " encrypt PEM output with cbc seed\n"); 208 # endif 209 # ifndef OPENSSL_NO_AES 210 BIO_printf(bio_err, " -aes128, -aes192, -aes256\n"); 211 BIO_printf(bio_err, 212 " encrypt PEM output with cbc aes\n"); 213 # endif 214 # ifndef OPENSSL_NO_CAMELLIA 215 BIO_printf(bio_err, " -camellia128, -camellia192, -camellia256\n"); 216 BIO_printf(bio_err, 217 " encrypt PEM output with cbc camellia\n"); 218 # endif 219 BIO_printf(bio_err, " -out file output the key to 'file\n"); 220 BIO_printf(bio_err, 221 " -passout arg output file pass phrase source\n"); 222 BIO_printf(bio_err, 223 " -f4 use F4 (0x10001) for the E value\n"); 224 BIO_printf(bio_err, " -3 use 3 for the E value\n"); 225 # ifndef OPENSSL_NO_ENGINE 226 BIO_printf(bio_err, 227 " -engine e use engine e, possibly a hardware device.\n"); 228 # endif 229 BIO_printf(bio_err, " -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, 230 LIST_SEPARATOR_CHAR); 231 BIO_printf(bio_err, 232 " load the file (or the files in the directory) into\n"); 233 BIO_printf(bio_err, " the random number generator\n"); 234 goto err; 235 } 236 237 ERR_load_crypto_strings(); 238 239 if (!app_passwd(bio_err, NULL, passargout, NULL, &passout)) { 240 BIO_printf(bio_err, "Error getting password\n"); 241 goto err; 242 } 243 # ifndef OPENSSL_NO_ENGINE 244 e = setup_engine(bio_err, engine, 0); 245 # endif 246 247 if (outfile == NULL) { 248 BIO_set_fp(out, stdout, BIO_NOCLOSE); 249 # ifdef OPENSSL_SYS_VMS 250 { 251 BIO *tmpbio = BIO_new(BIO_f_linebuffer()); 252 out = BIO_push(tmpbio, out); 253 } 254 # endif 255 } else { 256 if (BIO_write_filename(out, outfile) <= 0) { 257 perror(outfile); 258 goto err; 259 } 260 } 261 262 if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL 263 && !RAND_status()) { 264 BIO_printf(bio_err, 265 "warning, not much extra random data, consider using the -rand option\n"); 266 } 267 if (inrand != NULL) 268 BIO_printf(bio_err, "%ld semi-random bytes loaded\n", 269 app_RAND_load_files(inrand)); 270 271 BIO_printf(bio_err, "Generating RSA private key, %d bit long modulus\n", 272 num); 273 # ifdef OPENSSL_NO_ENGINE 274 rsa = RSA_new(); 275 # else 276 rsa = RSA_new_method(e); 277 # endif 278 if (!rsa) 279 goto err; 280 281 if (!BN_set_word(bn, f4) || !RSA_generate_key_ex(rsa, num, bn, &cb)) 282 goto err; 283 284 app_RAND_write_file(NULL, bio_err); 285 286 /* 287 * We need to do the following for when the base number size is < long, 288 * esp windows 3.1 :-(. 289 */ 290 l = 0L; 291 for (i = 0; i < rsa->e->top; i++) { 292 # ifndef SIXTY_FOUR_BIT 293 l <<= BN_BITS4; 294 l <<= BN_BITS4; 295 # endif 296 l += rsa->e->d[i]; 297 } 298 BIO_printf(bio_err, "e is %ld (0x%lX)\n", l, l); 299 { 300 PW_CB_DATA cb_data; 301 cb_data.password = passout; 302 cb_data.prompt_info = outfile; 303 if (!PEM_write_bio_RSAPrivateKey(out, rsa, enc, NULL, 0, 304 (pem_password_cb *)password_callback, 305 &cb_data)) 306 goto err; 307 } 308 309 ret = 0; 310 err: 311 if (bn) 312 BN_free(bn); 313 if (rsa) 314 RSA_free(rsa); 315 if (out) 316 BIO_free_all(out); 317 if (passout) 318 OPENSSL_free(passout); 319 if (ret != 0) 320 ERR_print_errors(bio_err); 321 apps_shutdown(); 322 OPENSSL_EXIT(ret); 323 } 324 325 static int MS_CALLBACK genrsa_cb(int p, int n, BN_GENCB *cb) 326 { 327 char c = '*'; 328 329 if (p == 0) 330 c = '.'; 331 if (p == 1) 332 c = '+'; 333 if (p == 2) 334 c = '*'; 335 if (p == 3) 336 c = '\n'; 337 BIO_write(cb->arg, &c, 1); 338 (void)BIO_flush(cb->arg); 339 # ifdef LINT 340 p = n; 341 # endif 342 return 1; 343 } 344 #else /* !OPENSSL_NO_RSA */ 345 346 # if PEDANTIC 347 static void *dummy = &dummy; 348 # endif 349 350 #endif 351