genrsa.c revision 160814
1112158Sdas/* apps/genrsa.c */ 2112158Sdas/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3112158Sdas * All rights reserved. 4112158Sdas * 5112158Sdas * This package is an SSL implementation written 6112158Sdas * by Eric Young (eay@cryptsoft.com). 7112158Sdas * The implementation was written so as to conform with Netscapes SSL. 8112158Sdas * 9112158Sdas * This library is free for commercial and non-commercial use as long as 10112158Sdas * the following conditions are aheared to. The following conditions 11112158Sdas * apply to all code found in this distribution, be it the RC4, RSA, 12112158Sdas * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13112158Sdas * included with this distribution is covered by the same copyright terms 14112158Sdas * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15112158Sdas * 16112158Sdas * Copyright remains Eric Young's, and as such any Copyright notices in 17112158Sdas * the code are not to be removed. 18112158Sdas * If this package is used in a product, Eric Young should be given attribution 19112158Sdas * as the author of the parts of the library used. 20112158Sdas * This can be in the form of a textual message at program startup or 21112158Sdas * in documentation (online or textual) provided with the package. 22112158Sdas * 23112158Sdas * Redistribution and use in source and binary forms, with or without 24112158Sdas * modification, are permitted provided that the following conditions 25112158Sdas * are met: 26112158Sdas * 1. Redistributions of source code must retain the copyright 27112158Sdas * notice, this list of conditions and the following disclaimer. 28112158Sdas * 2. Redistributions in binary form must reproduce the above copyright 29112158Sdas * notice, this list of conditions and the following disclaimer in the 30112158Sdas * documentation and/or other materials provided with the distribution. 31112158Sdas * 3. All advertising materials mentioning features or use of this software 32112158Sdas * must display the following acknowledgement: 33112158Sdas * "This product includes cryptographic software written by 34112158Sdas * Eric Young (eay@cryptsoft.com)" 35112158Sdas * The word 'cryptographic' can be left out if the rouines from the library 36112158Sdas * being used are not cryptographic related :-). 37112158Sdas * 4. If you include any Windows specific code (or a derivative thereof) from 38112158Sdas * the apps directory (application code) you must include an acknowledgement: 39112158Sdas * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40112158Sdas * 41112158Sdas * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42112158Sdas * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43112158Sdas * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44112158Sdas * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45112158Sdas * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46112158Sdas * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47112158Sdas * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48112158Sdas * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49112158Sdas * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50112158Sdas * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51112158Sdas * SUCH DAMAGE. 52112158Sdas * 53112158Sdas * The licence and distribution terms for any publically available version or 54112158Sdas * derivative of this code cannot be changed. i.e. this code cannot simply be 55112158Sdas * copied and put under another distribution licence 56112158Sdas * [including the GNU Public Licence.] 57112158Sdas */ 58112158Sdas 59187808Sdas#include <openssl/opensslconf.h> 60187808Sdas/* Until the key-gen callbacks are modified to use newer prototypes, we allow 61187808Sdas * deprecated functions for openssl-internal code */ 62112158Sdas#ifdef OPENSSL_NO_DEPRECATED 63112158Sdas#undef OPENSSL_NO_DEPRECATED 64112158Sdas#endif 65112158Sdas 66112158Sdas#ifndef OPENSSL_NO_RSA 67112158Sdas#include <stdio.h> 68112158Sdas#include <string.h> 69112158Sdas#include <sys/types.h> 70112158Sdas#include <sys/stat.h> 71112158Sdas#include "apps.h" 72112158Sdas#include <openssl/bio.h> 73112158Sdas#include <openssl/err.h> 74112158Sdas#include <openssl/bn.h> 75112158Sdas#include <openssl/rsa.h> 76112158Sdas#include <openssl/evp.h> 77112158Sdas#include <openssl/x509.h> 78112158Sdas#include <openssl/pem.h> 79112158Sdas#include <openssl/rand.h> 80112158Sdas 81112158Sdas#define DEFBITS 512 82112158Sdas#undef PROG 83112158Sdas#define PROG genrsa_main 84112158Sdas 85112158Sdasstatic int MS_CALLBACK genrsa_cb(int p, int n, BN_GENCB *cb); 86112158Sdas 87112158Sdasint MAIN(int, char **); 88112158Sdas 89112158Sdasint MAIN(int argc, char **argv) 90112158Sdas { 91112158Sdas BN_GENCB cb; 92112158Sdas#ifndef OPENSSL_NO_ENGINE 93112158Sdas ENGINE *e = NULL; 94112158Sdas#endif 95112158Sdas int ret=1; 96112158Sdas int i,num=DEFBITS; 97112158Sdas long l; 98112158Sdas const EVP_CIPHER *enc=NULL; 99112158Sdas unsigned long f4=RSA_F4; 100112158Sdas char *outfile=NULL; 101112158Sdas char *passargout = NULL, *passout = NULL; 102112158Sdas#ifndef OPENSSL_NO_ENGINE 103112158Sdas char *engine=NULL; 104112158Sdas#endif 105112158Sdas char *inrand=NULL; 106112158Sdas BIO *out=NULL; 107112158Sdas BIGNUM *bn = BN_new(); 108112158Sdas RSA *rsa = RSA_new(); 109112158Sdas 110112158Sdas if(!bn || !rsa) goto err; 111112158Sdas 112112158Sdas apps_startup(); 113112158Sdas BN_GENCB_set(&cb, genrsa_cb, bio_err); 114112158Sdas 115112158Sdas if (bio_err == NULL) 116112158Sdas if ((bio_err=BIO_new(BIO_s_file())) != NULL) 117112158Sdas BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT); 118112158Sdas 119112158Sdas if (!load_config(bio_err, NULL)) 120112158Sdas goto err; 121112158Sdas if ((out=BIO_new(BIO_s_file())) == NULL) 122112158Sdas { 123112158Sdas BIO_printf(bio_err,"unable to create BIO for output\n"); 124112158Sdas goto err; 125112158Sdas } 126112158Sdas 127112158Sdas argv++; 128112158Sdas argc--; 129112158Sdas for (;;) 130112158Sdas { 131112158Sdas if (argc <= 0) break; 132112158Sdas if (strcmp(*argv,"-out") == 0) 133112158Sdas { 134112158Sdas if (--argc < 1) goto bad; 135112158Sdas outfile= *(++argv); 136112158Sdas } 137112158Sdas else if (strcmp(*argv,"-3") == 0) 138112158Sdas f4=3; 139112158Sdas else if (strcmp(*argv,"-F4") == 0 || strcmp(*argv,"-f4") == 0) 140112158Sdas f4=RSA_F4; 141112158Sdas#ifndef OPENSSL_NO_ENGINE 142112158Sdas else if (strcmp(*argv,"-engine") == 0) 143112158Sdas { 144112158Sdas if (--argc < 1) goto bad; 145112158Sdas engine= *(++argv); 146112158Sdas } 147112158Sdas#endif 148112158Sdas else if (strcmp(*argv,"-rand") == 0) 149165743Sdas { 150165743Sdas if (--argc < 1) goto bad; 151165743Sdas inrand= *(++argv); 152165743Sdas } 153165743Sdas#ifndef OPENSSL_NO_DES 154112158Sdas else if (strcmp(*argv,"-des") == 0) 155165743Sdas enc=EVP_des_cbc(); 156165743Sdas else if (strcmp(*argv,"-des3") == 0) 157165743Sdas enc=EVP_des_ede3_cbc(); 158165743Sdas#endif 159165743Sdas#ifndef OPENSSL_NO_IDEA 160165743Sdas else if (strcmp(*argv,"-idea") == 0) 161165743Sdas enc=EVP_idea_cbc(); 162112158Sdas#endif 163112158Sdas#ifndef OPENSSL_NO_AES 164112158Sdas else if (strcmp(*argv,"-aes128") == 0) 165112158Sdas enc=EVP_aes_128_cbc(); 166165743Sdas else if (strcmp(*argv,"-aes192") == 0) 167165743Sdas enc=EVP_aes_192_cbc(); 168165743Sdas else if (strcmp(*argv,"-aes256") == 0) 169165743Sdas enc=EVP_aes_256_cbc(); 170165743Sdas#endif 171165743Sdas else if (strcmp(*argv,"-passout") == 0) 172165743Sdas { 173165743Sdas if (--argc < 1) goto bad; 174165743Sdas passargout= *(++argv); 175165743Sdas } 176112158Sdas else 177112158Sdas break; 178112158Sdas argv++; 179112158Sdas argc--; 180112158Sdas } 181112158Sdas if ((argc >= 1) && ((sscanf(*argv,"%d",&num) == 0) || (num < 0))) 182112158Sdas { 183112158Sdasbad: 184112158Sdas BIO_printf(bio_err,"usage: genrsa [args] [numbits]\n"); 185112158Sdas BIO_printf(bio_err," -des encrypt the generated key with DES in cbc mode\n"); 186112158Sdas BIO_printf(bio_err," -des3 encrypt the generated key with DES in ede cbc mode (168 bit key)\n"); 187112158Sdas#ifndef OPENSSL_NO_IDEA 188112158Sdas BIO_printf(bio_err," -idea encrypt the generated key with IDEA in cbc mode\n"); 189112158Sdas#endif 190112158Sdas#ifndef OPENSSL_NO_AES 191112158Sdas BIO_printf(bio_err," -aes128, -aes192, -aes256\n"); 192112158Sdas BIO_printf(bio_err," encrypt PEM output with cbc aes\n"); 193112158Sdas#endif 194112158Sdas BIO_printf(bio_err," -out file output the key to 'file\n"); 195112158Sdas BIO_printf(bio_err," -passout arg output file pass phrase source\n"); 196187808Sdas BIO_printf(bio_err," -f4 use F4 (0x10001) for the E value\n"); 197187808Sdas BIO_printf(bio_err," -3 use 3 for the E value\n"); 198187808Sdas#ifndef OPENSSL_NO_ENGINE 199112158Sdas BIO_printf(bio_err," -engine e use engine e, possibly a hardware device.\n"); 200112158Sdas#endif 201112158Sdas BIO_printf(bio_err," -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR); 202112158Sdas BIO_printf(bio_err," load the file (or the files in the directory) into\n"); 203112158Sdas BIO_printf(bio_err," the random number generator\n"); 204112158Sdas goto err; 205112158Sdas } 206112158Sdas 207112158Sdas ERR_load_crypto_strings(); 208112158Sdas 209112158Sdas if(!app_passwd(bio_err, NULL, passargout, NULL, &passout)) { 210112158Sdas BIO_printf(bio_err, "Error getting password\n"); 211112158Sdas goto err; 212112158Sdas } 213112158Sdas 214112158Sdas#ifndef OPENSSL_NO_ENGINE 215112158Sdas e = setup_engine(bio_err, engine, 0); 216112158Sdas#endif 217112158Sdas 218112158Sdas if (outfile == NULL) 219112158Sdas { 220112158Sdas BIO_set_fp(out,stdout,BIO_NOCLOSE); 221112158Sdas#ifdef OPENSSL_SYS_VMS 222112158Sdas { 223112158Sdas BIO *tmpbio = BIO_new(BIO_f_linebuffer()); 224112158Sdas out = BIO_push(tmpbio, out); 225112158Sdas } 226112158Sdas#endif 227112158Sdas } 228112158Sdas else 229112158Sdas { 230112158Sdas if (BIO_write_filename(out,outfile) <= 0) 231112158Sdas { 232112158Sdas perror(outfile); 233112158Sdas goto err; 234112158Sdas } 235112158Sdas } 236165743Sdas 237112158Sdas if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL 238112158Sdas && !RAND_status()) 239112158Sdas { 240112158Sdas BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n"); 241112158Sdas } 242112158Sdas if (inrand != NULL) 243112158Sdas BIO_printf(bio_err,"%ld semi-random bytes loaded\n", 244112158Sdas app_RAND_load_files(inrand)); 245112158Sdas 246112158Sdas BIO_printf(bio_err,"Generating RSA private key, %d bit long modulus\n", 247112158Sdas num); 248112158Sdas 249112158Sdas if(!BN_set_word(bn, f4) || !RSA_generate_key_ex(rsa, num, bn, &cb)) 250112158Sdas goto err; 251112158Sdas 252112158Sdas app_RAND_write_file(NULL, bio_err); 253112158Sdas 254112158Sdas /* We need to do the following for when the base number size is < 255112158Sdas * long, esp windows 3.1 :-(. */ 256112158Sdas l=0L; 257112158Sdas for (i=0; i<rsa->e->top; i++) 258112158Sdas { 259112158Sdas#ifndef SIXTY_FOUR_BIT 260112158Sdas l<<=BN_BITS4; 261112158Sdas l<<=BN_BITS4; 262112158Sdas#endif 263112158Sdas l+=rsa->e->d[i]; 264112158Sdas } 265112158Sdas BIO_printf(bio_err,"e is %ld (0x%lX)\n",l,l); 266112158Sdas { 267112158Sdas PW_CB_DATA cb_data; 268112158Sdas cb_data.password = passout; 269112158Sdas cb_data.prompt_info = outfile; 270112158Sdas if (!PEM_write_bio_RSAPrivateKey(out,rsa,enc,NULL,0, 271112158Sdas (pem_password_cb *)password_callback,&cb_data)) 272112158Sdas goto err; 273112158Sdas } 274112158Sdas 275112158Sdas ret=0; 276112158Sdaserr: 277112158Sdas if (bn) BN_free(bn); 278112158Sdas if (rsa) RSA_free(rsa); 279112158Sdas if (out) BIO_free_all(out); 280112158Sdas if(passout) OPENSSL_free(passout); 281112158Sdas if (ret != 0) 282112158Sdas ERR_print_errors(bio_err); 283112158Sdas apps_shutdown(); 284112158Sdas OPENSSL_EXIT(ret); 285112158Sdas } 286112158Sdas 287112158Sdasstatic int MS_CALLBACK genrsa_cb(int p, int n, BN_GENCB *cb) 288112158Sdas { 289112158Sdas char c='*'; 290112158Sdas 291112158Sdas if (p == 0) c='.'; 292112158Sdas if (p == 1) c='+'; 293112158Sdas if (p == 2) c='*'; 294112158Sdas if (p == 3) c='\n'; 295112158Sdas BIO_write(cb->arg,&c,1); 296112158Sdas (void)BIO_flush(cb->arg); 297112158Sdas#ifdef LINT 298112158Sdas p=n; 299112158Sdas#endif 300112158Sdas return 1; 301112158Sdas } 302112158Sdas#else /* !OPENSSL_NO_RSA */ 303112158Sdas 304112158Sdas# if PEDANTIC 305112158Sdasstatic void *dummy=&dummy; 306112158Sdas# endif 307112158Sdas 308112158Sdas#endif 309112158Sdas