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 #ifndef OPENSSL_NO_RSA 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/rsa.h> 69 #include <openssl/evp.h> 70 #include <openssl/x509.h> 71 #include <openssl/pem.h> 72 #include <openssl/rand.h> 73 74 #define DEFBITS 512 75 #undef PROG 76 #define PROG genrsa_main 77 78 static void MS_CALLBACK genrsa_cb(int p, int n, void *arg); 79 80 int MAIN(int, char **); 81 82 int MAIN(int argc, char **argv) 83 { 84 ENGINE *e = NULL; 85 int ret=1; 86 RSA *rsa=NULL; 87 int i,num=DEFBITS; 88 long l; 89 const EVP_CIPHER *enc=NULL; 90 unsigned long f4=RSA_F4; 91 char *outfile=NULL; 92 char *passargout = NULL, *passout = NULL; 93 char *engine=NULL; 94 char *inrand=NULL; 95 BIO *out=NULL; 96 97 apps_startup(); 98 99 if (bio_err == NULL) 100 if ((bio_err=BIO_new(BIO_s_file())) != NULL) 101 BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT); 102 103 if (!load_config(bio_err, NULL)) 104 goto err; 105 if ((out=BIO_new(BIO_s_file())) == NULL) 106 { 107 BIO_printf(bio_err,"unable to create BIO for output\n"); 108 goto err; 109 } 110 111 argv++; 112 argc--; 113 for (;;) 114 { 115 if (argc <= 0) break; 116 if (strcmp(*argv,"-out") == 0) 117 { 118 if (--argc < 1) goto bad; 119 outfile= *(++argv); 120 } 121 else if (strcmp(*argv,"-3") == 0) 122 f4=3; 123 else if (strcmp(*argv,"-F4") == 0 || strcmp(*argv,"-f4") == 0) 124 f4=RSA_F4; 125 else if (strcmp(*argv,"-engine") == 0) 126 { 127 if (--argc < 1) goto bad; 128 engine= *(++argv); 129 } 130 else if (strcmp(*argv,"-rand") == 0) 131 { 132 if (--argc < 1) goto bad; 133 inrand= *(++argv); 134 } 135 #ifndef OPENSSL_NO_DES 136 else if (strcmp(*argv,"-des") == 0) 137 enc=EVP_des_cbc(); 138 else if (strcmp(*argv,"-des3") == 0) 139 enc=EVP_des_ede3_cbc(); 140 #endif 141 #ifndef OPENSSL_NO_IDEA 142 else if (strcmp(*argv,"-idea") == 0) 143 enc=EVP_idea_cbc(); 144 #endif 145 #ifndef OPENSSL_NO_AES 146 else if (strcmp(*argv,"-aes128") == 0) 147 enc=EVP_aes_128_cbc(); 148 else if (strcmp(*argv,"-aes192") == 0) 149 enc=EVP_aes_192_cbc(); 150 else if (strcmp(*argv,"-aes256") == 0) 151 enc=EVP_aes_256_cbc(); 152 #endif 153 else if (strcmp(*argv,"-passout") == 0) 154 { 155 if (--argc < 1) goto bad; 156 passargout= *(++argv); 157 } 158 else 159 break; 160 argv++; 161 argc--; 162 } 163 if ((argc >= 1) && ((sscanf(*argv,"%d",&num) == 0) || (num < 0))) 164 { 165 bad: 166 BIO_printf(bio_err,"usage: genrsa [args] [numbits]\n"); 167 BIO_printf(bio_err," -des encrypt the generated key with DES in cbc mode\n"); 168 BIO_printf(bio_err," -des3 encrypt the generated key with DES in ede cbc mode (168 bit key)\n"); 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 BIO_printf(bio_err," -out file output the key to 'file\n"); 177 BIO_printf(bio_err," -passout arg output file pass phrase source\n"); 178 BIO_printf(bio_err," -f4 use F4 (0x10001) for the E value\n"); 179 BIO_printf(bio_err," -3 use 3 for the E value\n"); 180 BIO_printf(bio_err," -engine e use engine e, possibly a hardware device.\n"); 181 BIO_printf(bio_err," -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR); 182 BIO_printf(bio_err," load the file (or the files in the directory) into\n"); 183 BIO_printf(bio_err," the random number generator\n"); 184 goto err; 185 } 186 187 ERR_load_crypto_strings(); 188 189 if(!app_passwd(bio_err, NULL, passargout, NULL, &passout)) { 190 BIO_printf(bio_err, "Error getting password\n"); 191 goto err; 192 } 193 194 e = setup_engine(bio_err, engine, 0); 195 196 if (outfile == NULL) 197 { 198 BIO_set_fp(out,stdout,BIO_NOCLOSE); 199 #ifdef OPENSSL_SYS_VMS 200 { 201 BIO *tmpbio = BIO_new(BIO_f_linebuffer()); 202 out = BIO_push(tmpbio, out); 203 } 204 #endif 205 } 206 else 207 { 208 if (BIO_write_filename(out,outfile) <= 0) 209 { 210 perror(outfile); 211 goto err; 212 } 213 } 214 215 if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL 216 && !RAND_status()) 217 { 218 BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n"); 219 } 220 if (inrand != NULL) 221 BIO_printf(bio_err,"%ld semi-random bytes loaded\n", 222 app_RAND_load_files(inrand)); 223 224 BIO_printf(bio_err,"Generating RSA private key, %d bit long modulus\n", 225 num); 226 rsa=RSA_generate_key(num,f4,genrsa_cb,bio_err); 227 228 app_RAND_write_file(NULL, bio_err); 229 230 if (rsa == NULL) goto err; 231 232 /* We need to do the following for when the base number size is < 233 * long, esp windows 3.1 :-(. */ 234 l=0L; 235 for (i=0; i<rsa->e->top; i++) 236 { 237 #ifndef SIXTY_FOUR_BIT 238 l<<=BN_BITS4; 239 l<<=BN_BITS4; 240 #endif 241 l+=rsa->e->d[i]; 242 } 243 BIO_printf(bio_err,"e is %ld (0x%lX)\n",l,l); 244 { 245 PW_CB_DATA cb_data; 246 cb_data.password = passout; 247 cb_data.prompt_info = outfile; 248 if (!PEM_write_bio_RSAPrivateKey(out,rsa,enc,NULL,0, 249 (pem_password_cb *)password_callback,&cb_data)) 250 goto err; 251 } 252 253 ret=0; 254 err: 255 if (rsa != NULL) RSA_free(rsa); 256 if (out != NULL) BIO_free_all(out); 257 if(passout) OPENSSL_free(passout); 258 if (ret != 0) 259 ERR_print_errors(bio_err); 260 apps_shutdown(); 261 OPENSSL_EXIT(ret); 262 } 263 264 static void MS_CALLBACK genrsa_cb(int p, int n, void *arg) 265 { 266 char c='*'; 267 268 if (p == 0) c='.'; 269 if (p == 1) c='+'; 270 if (p == 2) c='*'; 271 if (p == 3) c='\n'; 272 BIO_write((BIO *)arg,&c,1); 273 (void)BIO_flush((BIO *)arg); 274 #ifdef LINT 275 p=n; 276 #endif 277 } 278 #else /* !OPENSSL_NO_RSA */ 279 280 # if PEDANTIC 281 static void *dummy=&dummy; 282 # endif 283 284 #endif 285