gendh.c revision 238405
155714Skris/* apps/gendh.c */ 259191Skris/* obsoleted by dhparam.c */ 355714Skris/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 455714Skris * All rights reserved. 555714Skris * 655714Skris * This package is an SSL implementation written 755714Skris * by Eric Young (eay@cryptsoft.com). 855714Skris * The implementation was written so as to conform with Netscapes SSL. 955714Skris * 1055714Skris * This library is free for commercial and non-commercial use as long as 1155714Skris * the following conditions are aheared to. The following conditions 1255714Skris * apply to all code found in this distribution, be it the RC4, RSA, 1355714Skris * lhash, DES, etc., code; not just the SSL code. The SSL documentation 1455714Skris * included with this distribution is covered by the same copyright terms 1555714Skris * except that the holder is Tim Hudson (tjh@cryptsoft.com). 1655714Skris * 1755714Skris * Copyright remains Eric Young's, and as such any Copyright notices in 1855714Skris * the code are not to be removed. 1955714Skris * If this package is used in a product, Eric Young should be given attribution 2055714Skris * as the author of the parts of the library used. 2155714Skris * This can be in the form of a textual message at program startup or 2255714Skris * in documentation (online or textual) provided with the package. 2355714Skris * 2455714Skris * Redistribution and use in source and binary forms, with or without 2555714Skris * modification, are permitted provided that the following conditions 2655714Skris * are met: 2755714Skris * 1. Redistributions of source code must retain the copyright 2855714Skris * notice, this list of conditions and the following disclaimer. 2955714Skris * 2. Redistributions in binary form must reproduce the above copyright 3055714Skris * notice, this list of conditions and the following disclaimer in the 3155714Skris * documentation and/or other materials provided with the distribution. 3255714Skris * 3. All advertising materials mentioning features or use of this software 3355714Skris * must display the following acknowledgement: 3455714Skris * "This product includes cryptographic software written by 3555714Skris * Eric Young (eay@cryptsoft.com)" 3655714Skris * The word 'cryptographic' can be left out if the rouines from the library 3755714Skris * being used are not cryptographic related :-). 3855714Skris * 4. If you include any Windows specific code (or a derivative thereof) from 3955714Skris * the apps directory (application code) you must include an acknowledgement: 4055714Skris * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 4155714Skris * 4255714Skris * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 4355714Skris * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 4455714Skris * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 4555714Skris * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 4655714Skris * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 4755714Skris * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 4855714Skris * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 4955714Skris * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 5055714Skris * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 5155714Skris * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 5255714Skris * SUCH DAMAGE. 5355714Skris * 5455714Skris * The licence and distribution terms for any publically available version or 5555714Skris * derivative of this code cannot be changed. i.e. this code cannot simply be 5655714Skris * copied and put under another distribution licence 5755714Skris * [including the GNU Public Licence.] 5855714Skris */ 5955714Skris 60160814Ssimon#include <openssl/opensslconf.h> 61160814Ssimon/* Until the key-gen callbacks are modified to use newer prototypes, we allow 62160814Ssimon * deprecated functions for openssl-internal code */ 63160814Ssimon#ifdef OPENSSL_NO_DEPRECATED 64160814Ssimon#undef OPENSSL_NO_DEPRECATED 65160814Ssimon#endif 66160814Ssimon 67109998Smarkm#ifndef OPENSSL_NO_DH 6855714Skris#include <stdio.h> 6955714Skris#include <string.h> 7055714Skris#include <sys/types.h> 7155714Skris#include <sys/stat.h> 7255714Skris#include "apps.h" 7355714Skris#include <openssl/bio.h> 7455714Skris#include <openssl/rand.h> 7555714Skris#include <openssl/err.h> 7655714Skris#include <openssl/bn.h> 7755714Skris#include <openssl/dh.h> 7855714Skris#include <openssl/x509.h> 7955714Skris#include <openssl/pem.h> 8055714Skris 8155714Skris#define DEFBITS 512 8255714Skris#undef PROG 8355714Skris#define PROG gendh_main 8455714Skris 85160814Ssimonstatic int MS_CALLBACK dh_cb(int p, int n, BN_GENCB *cb); 8659191Skris 8759191Skrisint MAIN(int, char **); 8859191Skris 8955714Skrisint MAIN(int argc, char **argv) 9055714Skris { 91160814Ssimon BN_GENCB cb; 9255714Skris DH *dh=NULL; 9355714Skris int ret=1,num=DEFBITS; 9455714Skris int g=2; 9555714Skris char *outfile=NULL; 9659191Skris char *inrand=NULL; 97111147Snectar#ifndef OPENSSL_NO_ENGINE 98109998Smarkm char *engine=NULL; 99111147Snectar#endif 10055714Skris BIO *out=NULL; 10155714Skris 10255714Skris apps_startup(); 10355714Skris 104160814Ssimon BN_GENCB_set(&cb, dh_cb, bio_err); 10555714Skris if (bio_err == NULL) 10655714Skris if ((bio_err=BIO_new(BIO_s_file())) != NULL) 10755714Skris BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT); 10855714Skris 109109998Smarkm if (!load_config(bio_err, NULL)) 110109998Smarkm goto end; 111109998Smarkm 11255714Skris argv++; 11355714Skris argc--; 11455714Skris for (;;) 11555714Skris { 11655714Skris if (argc <= 0) break; 11755714Skris if (strcmp(*argv,"-out") == 0) 11855714Skris { 11955714Skris if (--argc < 1) goto bad; 12055714Skris outfile= *(++argv); 12155714Skris } 12255714Skris else if (strcmp(*argv,"-2") == 0) 12355714Skris g=2; 12455714Skris /* else if (strcmp(*argv,"-3") == 0) 12555714Skris g=3; */ 12655714Skris else if (strcmp(*argv,"-5") == 0) 12755714Skris g=5; 128111147Snectar#ifndef OPENSSL_NO_ENGINE 129109998Smarkm else if (strcmp(*argv,"-engine") == 0) 130109998Smarkm { 131109998Smarkm if (--argc < 1) goto bad; 132109998Smarkm engine= *(++argv); 133109998Smarkm } 134111147Snectar#endif 13555714Skris else if (strcmp(*argv,"-rand") == 0) 13655714Skris { 13755714Skris if (--argc < 1) goto bad; 13855714Skris inrand= *(++argv); 13955714Skris } 14055714Skris else 14155714Skris break; 14255714Skris argv++; 14355714Skris argc--; 14455714Skris } 14555714Skris if ((argc >= 1) && ((sscanf(*argv,"%d",&num) == 0) || (num < 0))) 14655714Skris { 14755714Skrisbad: 14855714Skris BIO_printf(bio_err,"usage: gendh [args] [numbits]\n"); 14955714Skris BIO_printf(bio_err," -out file - output the key to 'file\n"); 150109998Smarkm BIO_printf(bio_err," -2 - use 2 as the generator value\n"); 151109998Smarkm /* BIO_printf(bio_err," -3 - use 3 as the generator value\n"); */ 152109998Smarkm BIO_printf(bio_err," -5 - use 5 as the generator value\n"); 153111147Snectar#ifndef OPENSSL_NO_ENGINE 154109998Smarkm BIO_printf(bio_err," -engine e - use engine e, possibly a hardware device.\n"); 155111147Snectar#endif 15659191Skris BIO_printf(bio_err," -rand file%cfile%c...\n", LIST_SEPARATOR_CHAR, LIST_SEPARATOR_CHAR); 15755714Skris BIO_printf(bio_err," - load the file (or the files in the directory) into\n"); 15855714Skris BIO_printf(bio_err," the random number generator\n"); 15955714Skris goto end; 16055714Skris } 16155714Skris 162111147Snectar#ifndef OPENSSL_NO_ENGINE 163215697Ssimon setup_engine(bio_err, engine, 0); 164111147Snectar#endif 165109998Smarkm 16655714Skris out=BIO_new(BIO_s_file()); 16755714Skris if (out == NULL) 16855714Skris { 16955714Skris ERR_print_errors(bio_err); 17055714Skris goto end; 17155714Skris } 17255714Skris 17355714Skris if (outfile == NULL) 17468651Skris { 17555714Skris BIO_set_fp(out,stdout,BIO_NOCLOSE); 176109998Smarkm#ifdef OPENSSL_SYS_VMS 17768651Skris { 17868651Skris BIO *tmpbio = BIO_new(BIO_f_linebuffer()); 17968651Skris out = BIO_push(tmpbio, out); 18068651Skris } 18168651Skris#endif 18268651Skris } 18355714Skris else 18455714Skris { 18555714Skris if (BIO_write_filename(out,outfile) <= 0) 18655714Skris { 18755714Skris perror(outfile); 18855714Skris goto end; 18955714Skris } 19055714Skris } 19155714Skris 19259191Skris if (!app_RAND_load_file(NULL, bio_err, 1) && inrand == NULL) 19359191Skris { 19455714Skris BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n"); 19559191Skris } 19659191Skris if (inrand != NULL) 19755714Skris BIO_printf(bio_err,"%ld semi-random bytes loaded\n", 19859191Skris app_RAND_load_files(inrand)); 19955714Skris 20059191Skris BIO_printf(bio_err,"Generating DH parameters, %d bit long safe prime, generator %d\n",num,g); 20155714Skris BIO_printf(bio_err,"This is going to take a long time\n"); 202160814Ssimon 203160814Ssimon if(((dh = DH_new()) == NULL) || !DH_generate_parameters_ex(dh, num, g, &cb)) 204160814Ssimon goto end; 20555714Skris 20659191Skris app_RAND_write_file(NULL, bio_err); 20755714Skris 20855714Skris if (!PEM_write_bio_DHparams(out,dh)) 20955714Skris goto end; 21055714Skris ret=0; 21155714Skrisend: 21255714Skris if (ret != 0) 21355714Skris ERR_print_errors(bio_err); 21468651Skris if (out != NULL) BIO_free_all(out); 21555714Skris if (dh != NULL) DH_free(dh); 216109998Smarkm apps_shutdown(); 217109998Smarkm OPENSSL_EXIT(ret); 21855714Skris } 21955714Skris 220160814Ssimonstatic int MS_CALLBACK dh_cb(int p, int n, BN_GENCB *cb) 22155714Skris { 22255714Skris char c='*'; 22355714Skris 22455714Skris if (p == 0) c='.'; 22555714Skris if (p == 1) c='+'; 22655714Skris if (p == 2) c='*'; 22755714Skris if (p == 3) c='\n'; 228160814Ssimon BIO_write(cb->arg,&c,1); 229160814Ssimon (void)BIO_flush(cb->arg); 23055714Skris#ifdef LINT 23155714Skris p=n; 23255714Skris#endif 233160814Ssimon return 1; 23455714Skris } 235238405Sjkim#else /* !OPENSSL_NO_DH */ 236238405Sjkim 237238405Sjkim# if PEDANTIC 238238405Sjkimstatic void *dummy=&dummy; 239238405Sjkim# endif 240238405Sjkim 24155714Skris#endif 242