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 /* Until the key-gen callbacks are modified to use newer prototypes, we allow 61 * deprecated functions for openssl-internal code */ 62 #ifdef OPENSSL_NO_DEPRECATED 63 #undef OPENSSL_NO_DEPRECATED 64 #endif 65 66 #ifndef OPENSSL_NO_RSA 67 #include <stdio.h> 68 #include <string.h> 69 #include <sys/types.h> 70 #include <sys/stat.h> 71 #include "apps.h" 72 #include <openssl/bio.h> 73 #include <openssl/err.h> 74 #include <openssl/bn.h> 75 #include <openssl/rsa.h> 76 #include <openssl/evp.h> 77 #include <openssl/x509.h> 78 #include <openssl/pem.h> 79 #include <openssl/rand.h> 80 81 #define DEFBITS 512 82 #undef PROG 83 #define PROG genrsa_main 84 85 static int MS_CALLBACK genrsa_cb(int p, int n, BN_GENCB *cb); 86 87 int MAIN(int, char **); 88 89 int MAIN(int argc, char **argv) 90 { 91 BN_GENCB cb; 92 #ifndef OPENSSL_NO_ENGINE 93 ENGINE *e = NULL; 94 #endif 95 int ret=1; 96 int i,num=DEFBITS; 97 long l; 98 int use_x931 = 0; 99 const EVP_CIPHER *enc=NULL; 100 unsigned long f4=RSA_F4; 101 char *outfile=NULL; 102 char *passargout = NULL, *passout = NULL; 103 #ifndef OPENSSL_NO_ENGINE 104 char *engine=NULL; 105 #endif 106 char *inrand=NULL; 107 BIO *out=NULL; 108 BIGNUM *bn = BN_new(); 109 RSA *rsa = RSA_new(); 110 111 if(!bn || !rsa) goto err; 112 113 apps_startup(); 114 BN_GENCB_set(&cb, genrsa_cb, bio_err); 115 116 if (bio_err == NULL) 117 if ((bio_err=BIO_new(BIO_s_file())) != NULL) 118 BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT); 119 120 if (!load_config(bio_err, NULL)) 121 goto err; 122 if ((out=BIO_new(BIO_s_file())) == NULL) 123 { 124 BIO_printf(bio_err,"unable to create BIO for output\n"); 125 goto err; 126 } 127 128 argv++; 129 argc--; 130 for (;;) 131 { 132 if (argc <= 0) break; 133 if (strcmp(*argv,"-out") == 0) 134 { 135 if (--argc < 1) goto bad; 136 outfile= *(++argv); 137 } 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 else if (strcmp(*argv,"-x931") == 0) 143 use_x931 = 1; 144 #ifndef OPENSSL_NO_ENGINE 145 else if (strcmp(*argv,"-engine") == 0) 146 { 147 if (--argc < 1) goto bad; 148 engine= *(++argv); 149 } 150 #endif 151 else if (strcmp(*argv,"-rand") == 0) 152 { 153 if (--argc < 1) goto bad; 154 inrand= *(++argv); 155 } 156 #ifndef OPENSSL_NO_DES 157 else if (strcmp(*argv,"-des") == 0) 158 enc=EVP_des_cbc(); 159 else if (strcmp(*argv,"-des3") == 0) 160 enc=EVP_des_ede3_cbc(); 161 #endif 162 #ifndef OPENSSL_NO_IDEA 163 else if (strcmp(*argv,"-idea") == 0) 164 enc=EVP_idea_cbc(); 165 #endif 166 #ifndef OPENSSL_NO_SEED 167 else if (strcmp(*argv,"-seed") == 0) 168 enc=EVP_seed_cbc(); 169 #endif 170 #ifndef OPENSSL_NO_AES 171 else if (strcmp(*argv,"-aes128") == 0) 172 enc=EVP_aes_128_cbc(); 173 else if (strcmp(*argv,"-aes192") == 0) 174 enc=EVP_aes_192_cbc(); 175 else if (strcmp(*argv,"-aes256") == 0) 176 enc=EVP_aes_256_cbc(); 177 #endif 178 #ifndef OPENSSL_NO_CAMELLIA 179 else if (strcmp(*argv,"-camellia128") == 0) 180 enc=EVP_camellia_128_cbc(); 181 else if (strcmp(*argv,"-camellia192") == 0) 182 enc=EVP_camellia_192_cbc(); 183 else if (strcmp(*argv,"-camellia256") == 0) 184 enc=EVP_camellia_256_cbc(); 185 #endif 186 else if (strcmp(*argv,"-passout") == 0) 187 { 188 if (--argc < 1) goto bad; 189 passargout= *(++argv); 190 } 191 else 192 break; 193 argv++; 194 argc--; 195 } 196 if ((argc >= 1) && ((sscanf(*argv,"%d",&num) == 0) || (num < 0))) 197 { 198 bad: 199 BIO_printf(bio_err,"usage: genrsa [args] [numbits]\n"); 200 BIO_printf(bio_err," -des encrypt the generated key with DES in cbc mode\n"); 201 BIO_printf(bio_err," -des3 encrypt the generated key with DES in ede cbc mode (168 bit key)\n"); 202 #ifndef OPENSSL_NO_IDEA 203 BIO_printf(bio_err," -idea encrypt the generated key with IDEA in cbc mode\n"); 204 #endif 205 #ifndef OPENSSL_NO_SEED 206 BIO_printf(bio_err," -seed\n"); 207 BIO_printf(bio_err," 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," encrypt PEM output with cbc aes\n"); 212 #endif 213 #ifndef OPENSSL_NO_CAMELLIA 214 BIO_printf(bio_err," -camellia128, -camellia192, -camellia256\n"); 215 BIO_printf(bio_err," encrypt PEM output with cbc camellia\n"); 216 #endif 217 BIO_printf(bio_err," -out file output the key to 'file\n"); 218 BIO_printf(bio_err," -passout arg output file pass phrase source\n"); 219 BIO_printf(bio_err," -f4 use F4 (0x10001) for the E value\n"); 220 BIO_printf(bio_err," -3 use 3 for the E value\n"); 221 #ifndef OPENSSL_NO_ENGINE 222 BIO_printf(bio_err," -engine e use engine e, possibly a hardware device.\n"); 223 #endif 224 BIO_printf(bio_err," -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR); 225 BIO_printf(bio_err," load the file (or the files in the directory) into\n"); 226 BIO_printf(bio_err," the random number generator\n"); 227 goto err; 228 } 229 230 ERR_load_crypto_strings(); 231 232 if(!app_passwd(bio_err, NULL, passargout, NULL, &passout)) { 233 BIO_printf(bio_err, "Error getting password\n"); 234 goto err; 235 } 236 237 #ifndef OPENSSL_NO_ENGINE 238 e = setup_engine(bio_err, engine, 0); 239 #endif 240 241 if (outfile == NULL) 242 { 243 BIO_set_fp(out,stdout,BIO_NOCLOSE); 244 #ifdef OPENSSL_SYS_VMS 245 { 246 BIO *tmpbio = BIO_new(BIO_f_linebuffer()); 247 out = BIO_push(tmpbio, out); 248 } 249 #endif 250 } 251 else 252 { 253 if (BIO_write_filename(out,outfile) <= 0) 254 { 255 perror(outfile); 256 goto err; 257 } 258 } 259 260 if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL 261 && !RAND_status()) 262 { 263 BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n"); 264 } 265 if (inrand != NULL) 266 BIO_printf(bio_err,"%ld semi-random bytes loaded\n", 267 app_RAND_load_files(inrand)); 268 269 BIO_printf(bio_err,"Generating RSA private key, %d bit long modulus\n", 270 num); 271 272 if (use_x931) 273 { 274 BIGNUM *pubexp; 275 pubexp = BN_new(); 276 if (!BN_set_word(pubexp, f4)) 277 goto err; 278 if (!RSA_X931_generate_key_ex(rsa, num, pubexp, &cb)) 279 goto err; 280 BN_free(pubexp); 281 } 282 else if(!BN_set_word(bn, f4) || !RSA_generate_key_ex(rsa, num, bn, &cb)) 283 goto err; 284 285 app_RAND_write_file(NULL, bio_err); 286 287 /* We need to do the following for when the base number size is < 288 * long, esp windows 3.1 :-(. */ 289 l=0L; 290 for (i=0; i<rsa->e->top; i++) 291 { 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,&cb_data)) 305 goto err; 306 } 307 308 ret=0; 309 err: 310 if (bn) BN_free(bn); 311 if (rsa) RSA_free(rsa); 312 if (out) BIO_free_all(out); 313 if(passout) OPENSSL_free(passout); 314 if (ret != 0) 315 ERR_print_errors(bio_err); 316 apps_shutdown(); 317 OPENSSL_EXIT(ret); 318 } 319 320 static int MS_CALLBACK genrsa_cb(int p, int n, BN_GENCB *cb) 321 { 322 char c='*'; 323 324 if (p == 0) c='.'; 325 if (p == 1) c='+'; 326 if (p == 2) c='*'; 327 if (p == 3) c='\n'; 328 BIO_write(cb->arg,&c,1); 329 (void)BIO_flush(cb->arg); 330 #ifdef LINT 331 p=n; 332 #endif 333 return 1; 334 } 335 #else /* !OPENSSL_NO_RSA */ 336 337 # if PEDANTIC 338 static void *dummy=&dummy; 339 # endif 340 341 #endif 342