gendsa.c revision 55714
155714Skris/* apps/gendsa.c */ 255714Skris/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 355714Skris * All rights reserved. 455714Skris * 555714Skris * This package is an SSL implementation written 655714Skris * by Eric Young (eay@cryptsoft.com). 755714Skris * The implementation was written so as to conform with Netscapes SSL. 855714Skris * 955714Skris * This library is free for commercial and non-commercial use as long as 1055714Skris * the following conditions are aheared to. The following conditions 1155714Skris * apply to all code found in this distribution, be it the RC4, RSA, 1255714Skris * lhash, DES, etc., code; not just the SSL code. The SSL documentation 1355714Skris * included with this distribution is covered by the same copyright terms 1455714Skris * except that the holder is Tim Hudson (tjh@cryptsoft.com). 1555714Skris * 1655714Skris * Copyright remains Eric Young's, and as such any Copyright notices in 1755714Skris * the code are not to be removed. 1855714Skris * If this package is used in a product, Eric Young should be given attribution 1955714Skris * as the author of the parts of the library used. 2055714Skris * This can be in the form of a textual message at program startup or 2155714Skris * in documentation (online or textual) provided with the package. 2255714Skris * 2355714Skris * Redistribution and use in source and binary forms, with or without 2455714Skris * modification, are permitted provided that the following conditions 2555714Skris * are met: 2655714Skris * 1. Redistributions of source code must retain the copyright 2755714Skris * notice, this list of conditions and the following disclaimer. 2855714Skris * 2. Redistributions in binary form must reproduce the above copyright 2955714Skris * notice, this list of conditions and the following disclaimer in the 3055714Skris * documentation and/or other materials provided with the distribution. 3155714Skris * 3. All advertising materials mentioning features or use of this software 3255714Skris * must display the following acknowledgement: 3355714Skris * "This product includes cryptographic software written by 3455714Skris * Eric Young (eay@cryptsoft.com)" 3555714Skris * The word 'cryptographic' can be left out if the rouines from the library 3655714Skris * being used are not cryptographic related :-). 3755714Skris * 4. If you include any Windows specific code (or a derivative thereof) from 3855714Skris * the apps directory (application code) you must include an acknowledgement: 3955714Skris * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 4055714Skris * 4155714Skris * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 4255714Skris * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 4355714Skris * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 4455714Skris * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 4555714Skris * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 4655714Skris * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 4755714Skris * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 4855714Skris * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 4955714Skris * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 5055714Skris * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 5155714Skris * SUCH DAMAGE. 5255714Skris * 5355714Skris * The licence and distribution terms for any publically available version or 5455714Skris * derivative of this code cannot be changed. i.e. this code cannot simply be 5555714Skris * copied and put under another distribution licence 5655714Skris * [including the GNU Public Licence.] 5755714Skris */ 5855714Skris 5955714Skris#ifndef NO_DSA 6055714Skris#include <stdio.h> 6155714Skris#include <string.h> 6255714Skris#include <sys/types.h> 6355714Skris#include <sys/stat.h> 6455714Skris#include "apps.h" 6555714Skris#include <openssl/bio.h> 6655714Skris#include <openssl/rand.h> 6755714Skris#include <openssl/err.h> 6855714Skris#include <openssl/bn.h> 6955714Skris#include <openssl/dsa.h> 7055714Skris#include <openssl/x509.h> 7155714Skris#include <openssl/pem.h> 7255714Skris 7355714Skris#define DEFBITS 512 7455714Skris#undef PROG 7555714Skris#define PROG gendsa_main 7655714Skris 7755714Skrisstatic long dsa_load_rand(char *names); 7855714Skrisint MAIN(int argc, char **argv) 7955714Skris { 8055714Skris char buffer[200]; 8155714Skris DSA *dsa=NULL; 8255714Skris int ret=1; 8355714Skris char *outfile=NULL; 8455714Skris char *inrand=NULL,*randfile,*dsaparams=NULL; 8555714Skris BIO *out=NULL,*in=NULL; 8655714Skris EVP_CIPHER *enc=NULL; 8755714Skris 8855714Skris apps_startup(); 8955714Skris 9055714Skris if (bio_err == NULL) 9155714Skris if ((bio_err=BIO_new(BIO_s_file())) != NULL) 9255714Skris BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT); 9355714Skris 9455714Skris argv++; 9555714Skris argc--; 9655714Skris for (;;) 9755714Skris { 9855714Skris if (argc <= 0) break; 9955714Skris if (strcmp(*argv,"-out") == 0) 10055714Skris { 10155714Skris if (--argc < 1) goto bad; 10255714Skris outfile= *(++argv); 10355714Skris } 10455714Skris else if (strcmp(*argv,"-rand") == 0) 10555714Skris { 10655714Skris if (--argc < 1) goto bad; 10755714Skris inrand= *(++argv); 10855714Skris } 10955714Skris else if (strcmp(*argv,"-") == 0) 11055714Skris goto bad; 11155714Skris#ifndef NO_DES 11255714Skris else if (strcmp(*argv,"-des") == 0) 11355714Skris enc=EVP_des_cbc(); 11455714Skris else if (strcmp(*argv,"-des3") == 0) 11555714Skris enc=EVP_des_ede3_cbc(); 11655714Skris#endif 11755714Skris#ifndef NO_IDEA 11855714Skris else if (strcmp(*argv,"-idea") == 0) 11955714Skris enc=EVP_idea_cbc(); 12055714Skris#endif 12155714Skris else if (**argv != '-' && dsaparams == NULL) 12255714Skris { 12355714Skris dsaparams = *argv; 12455714Skris } 12555714Skris else 12655714Skris goto bad; 12755714Skris argv++; 12855714Skris argc--; 12955714Skris } 13055714Skris 13155714Skris if (dsaparams == NULL) 13255714Skris { 13355714Skrisbad: 13455714Skris BIO_printf(bio_err,"usage: gendsa [args] dsaparam-file\n"); 13555714Skris BIO_printf(bio_err," -out file - output the key to 'file'\n"); 13655714Skris#ifndef NO_DES 13755714Skris BIO_printf(bio_err," -des - encrypt the generated key with DES in cbc mode\n"); 13855714Skris BIO_printf(bio_err," -des3 - encrypt the generated key with DES in ede cbc mode (168 bit key)\n"); 13955714Skris#endif 14055714Skris#ifndef NO_IDEA 14155714Skris BIO_printf(bio_err," -idea - encrypt the generated key with IDEA in cbc mode\n"); 14255714Skris#endif 14355714Skris BIO_printf(bio_err," -rand file:file:...\n"); 14455714Skris BIO_printf(bio_err," - load the file (or the files in the directory) into\n"); 14555714Skris BIO_printf(bio_err," the random number generator\n"); 14655714Skris BIO_printf(bio_err," dsaparam-file\n"); 14755714Skris BIO_printf(bio_err," - a DSA parameter file as generated by the dsaparam command\n"); 14855714Skris goto end; 14955714Skris } 15055714Skris 15155714Skris in=BIO_new(BIO_s_file()); 15255714Skris if (!(BIO_read_filename(in,dsaparams))) 15355714Skris { 15455714Skris perror(dsaparams); 15555714Skris goto end; 15655714Skris } 15755714Skris 15855714Skris if ((dsa=PEM_read_bio_DSAparams(in,NULL,NULL,NULL)) == NULL) 15955714Skris { 16055714Skris BIO_printf(bio_err,"unable to load DSA parameter file\n"); 16155714Skris goto end; 16255714Skris } 16355714Skris BIO_free(in); 16455714Skris 16555714Skris out=BIO_new(BIO_s_file()); 16655714Skris if (out == NULL) goto end; 16755714Skris 16855714Skris if (outfile == NULL) 16955714Skris BIO_set_fp(out,stdout,BIO_NOCLOSE); 17055714Skris else 17155714Skris { 17255714Skris if (BIO_write_filename(out,outfile) <= 0) 17355714Skris { 17455714Skris perror(outfile); 17555714Skris goto end; 17655714Skris } 17755714Skris } 17855714Skris 17955714Skris randfile=RAND_file_name(buffer,200); 18055714Skris if ((randfile == NULL)|| !RAND_load_file(randfile,1024L*1024L)) 18155714Skris BIO_printf(bio_err,"unable to load 'random state'\n"); 18255714Skris 18355714Skris if (inrand == NULL) 18455714Skris BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n"); 18555714Skris else 18655714Skris { 18755714Skris BIO_printf(bio_err,"%ld semi-random bytes loaded\n", 18855714Skris dsa_load_rand(inrand)); 18955714Skris } 19055714Skris 19155714Skris BIO_printf(bio_err,"Generating DSA key, %d bits\n", 19255714Skris BN_num_bits(dsa->p)); 19355714Skris if (!DSA_generate_key(dsa)) goto end; 19455714Skris 19555714Skris if (randfile == NULL) 19655714Skris BIO_printf(bio_err,"unable to write 'random state'\n"); 19755714Skris else 19855714Skris RAND_write_file(randfile); 19955714Skris 20055714Skris if (!PEM_write_bio_DSAPrivateKey(out,dsa,enc,NULL,0,NULL,NULL)) 20155714Skris goto end; 20255714Skris ret=0; 20355714Skrisend: 20455714Skris if (ret != 0) 20555714Skris ERR_print_errors(bio_err); 20655714Skris if (out != NULL) BIO_free(out); 20755714Skris if (dsa != NULL) DSA_free(dsa); 20855714Skris EXIT(ret); 20955714Skris } 21055714Skris 21155714Skrisstatic long dsa_load_rand(char *name) 21255714Skris { 21355714Skris char *p,*n; 21455714Skris int last; 21555714Skris long tot=0; 21655714Skris 21755714Skris for (;;) 21855714Skris { 21955714Skris last=0; 22055714Skris for (p=name; ((*p != '\0') && (*p != LIST_SEPARATOR_CHAR)); p++); 22155714Skris if (*p == '\0') last=1; 22255714Skris *p='\0'; 22355714Skris n=name; 22455714Skris name=p+1; 22555714Skris if (*n == '\0') break; 22655714Skris 22755714Skris tot+=RAND_load_file(n,1); 22855714Skris if (last) break; 22955714Skris } 23055714Skris return(tot); 23155714Skris } 23255714Skris#endif 233