genrsa.c revision 68651
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 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 73#define DEFBITS 512 74#undef PROG 75#define PROG genrsa_main 76 77static void MS_CALLBACK genrsa_cb(int p, int n, void *arg); 78 79int MAIN(int, char **); 80 81int MAIN(int argc, char **argv) 82 { 83 int ret=1; 84 RSA *rsa=NULL; 85 int i,num=DEFBITS; 86 long l; 87 EVP_CIPHER *enc=NULL; 88 unsigned long f4=RSA_F4; 89 char *outfile=NULL; 90 char *passargout = NULL, *passout = NULL; 91 char *inrand=NULL; 92 BIO *out=NULL; 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 if ((out=BIO_new(BIO_s_file())) == NULL) 100 { 101 BIO_printf(bio_err,"unable to create BIO for output\n"); 102 goto err; 103 } 104 105 argv++; 106 argc--; 107 for (;;) 108 { 109 if (argc <= 0) break; 110 if (strcmp(*argv,"-out") == 0) 111 { 112 if (--argc < 1) goto bad; 113 outfile= *(++argv); 114 } 115 else if (strcmp(*argv,"-3") == 0) 116 f4=3; 117 else if (strcmp(*argv,"-F4") == 0 || strcmp(*argv,"-f4") == 0) 118 f4=RSA_F4; 119 else if (strcmp(*argv,"-rand") == 0) 120 { 121 if (--argc < 1) goto bad; 122 inrand= *(++argv); 123 } 124#ifndef NO_DES 125 else if (strcmp(*argv,"-des") == 0) 126 enc=EVP_des_cbc(); 127 else if (strcmp(*argv,"-des3") == 0) 128 enc=EVP_des_ede3_cbc(); 129#endif 130#ifndef NO_IDEA 131 else if (strcmp(*argv,"-idea") == 0) 132 enc=EVP_idea_cbc(); 133#endif 134 else if (strcmp(*argv,"-passout") == 0) 135 { 136 if (--argc < 1) goto bad; 137 passargout= *(++argv); 138 } 139 else 140 break; 141 argv++; 142 argc--; 143 } 144 if ((argc >= 1) && ((sscanf(*argv,"%d",&num) == 0) || (num < 0))) 145 { 146bad: 147 BIO_printf(bio_err,"usage: genrsa [args] [numbits]\n"); 148 BIO_printf(bio_err," -des encrypt the generated key with DES in cbc mode\n"); 149 BIO_printf(bio_err," -des3 encrypt the generated key with DES in ede cbc mode (168 bit key)\n"); 150#ifndef NO_IDEA 151 BIO_printf(bio_err," -idea encrypt the generated key with IDEA in cbc mode\n"); 152#endif 153 BIO_printf(bio_err," -out file output the key to 'file\n"); 154 BIO_printf(bio_err," -passout arg output file pass phrase source\n"); 155 BIO_printf(bio_err," -f4 use F4 (0x10001) for the E value\n"); 156 BIO_printf(bio_err," -3 use 3 for the E value\n"); 157 BIO_printf(bio_err," -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR); 158 BIO_printf(bio_err," load the file (or the files in the directory) into\n"); 159 BIO_printf(bio_err," the random number generator\n"); 160 goto err; 161 } 162 163 ERR_load_crypto_strings(); 164 165 if(!app_passwd(bio_err, NULL, passargout, NULL, &passout)) { 166 BIO_printf(bio_err, "Error getting password\n"); 167 goto err; 168 } 169 170 if (outfile == NULL) 171 { 172 BIO_set_fp(out,stdout,BIO_NOCLOSE); 173#ifdef VMS 174 { 175 BIO *tmpbio = BIO_new(BIO_f_linebuffer()); 176 out = BIO_push(tmpbio, out); 177 } 178#endif 179 } 180 else 181 { 182 if (BIO_write_filename(out,outfile) <= 0) 183 { 184 perror(outfile); 185 goto err; 186 } 187 } 188 189 if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL) 190 { 191 BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n"); 192 } 193 if (inrand != NULL) 194 BIO_printf(bio_err,"%ld semi-random bytes loaded\n", 195 app_RAND_load_files(inrand)); 196 197 BIO_printf(bio_err,"Generating RSA private key, %d bit long modulus\n", 198 num); 199 rsa=RSA_generate_key(num,f4,genrsa_cb,bio_err); 200 201 app_RAND_write_file(NULL, bio_err); 202 203 if (rsa == NULL) goto err; 204 205 /* We need to do the following for when the base number size is < 206 * long, esp windows 3.1 :-(. */ 207 l=0L; 208 for (i=0; i<rsa->e->top; i++) 209 { 210#ifndef SIXTY_FOUR_BIT 211 l<<=BN_BITS4; 212 l<<=BN_BITS4; 213#endif 214 l+=rsa->e->d[i]; 215 } 216 BIO_printf(bio_err,"e is %ld (0x%lX)\n",l,l); 217 if (!PEM_write_bio_RSAPrivateKey(out,rsa,enc,NULL,0,NULL, passout)) 218 goto err; 219 220 ret=0; 221err: 222 if (rsa != NULL) RSA_free(rsa); 223 if (out != NULL) BIO_free_all(out); 224 if(passout) OPENSSL_free(passout); 225 if (ret != 0) 226 ERR_print_errors(bio_err); 227 EXIT(ret); 228 } 229 230static void MS_CALLBACK genrsa_cb(int p, int n, void *arg) 231 { 232 char c='*'; 233 234 if (p == 0) c='.'; 235 if (p == 1) c='+'; 236 if (p == 2) c='*'; 237 if (p == 3) c='\n'; 238 BIO_write((BIO *)arg,&c,1); 239 (void)BIO_flush((BIO *)arg); 240#ifdef LINT 241 p=n; 242#endif 243 } 244#else /* !NO_RSA */ 245 246# if PEDANTIC 247static void *dummy=&dummy; 248# endif 249 250#endif 251