233 lines
6.9 KiB
C
233 lines
6.9 KiB
C
/* apps/gendsa.c */
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/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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* All rights reserved.
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*
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* This package is an SSL implementation written
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* by Eric Young (eay@cryptsoft.com).
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* The implementation was written so as to conform with Netscapes SSL.
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*
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* This library is free for commercial and non-commercial use as long as
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* the following conditions are aheared to. The following conditions
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* apply to all code found in this distribution, be it the RC4, RSA,
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* lhash, DES, etc., code; not just the SSL code. The SSL documentation
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* included with this distribution is covered by the same copyright terms
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* except that the holder is Tim Hudson (tjh@cryptsoft.com).
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*
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* Copyright remains Eric Young's, and as such any Copyright notices in
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* the code are not to be removed.
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* If this package is used in a product, Eric Young should be given attribution
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* as the author of the parts of the library used.
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* This can be in the form of a textual message at program startup or
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* in documentation (online or textual) provided with the package.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* "This product includes cryptographic software written by
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* Eric Young (eay@cryptsoft.com)"
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* The word 'cryptographic' can be left out if the rouines from the library
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* being used are not cryptographic related :-).
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* 4. If you include any Windows specific code (or a derivative thereof) from
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* the apps directory (application code) you must include an acknowledgement:
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* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
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*
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* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* The licence and distribution terms for any publically available version or
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* derivative of this code cannot be changed. i.e. this code cannot simply be
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* copied and put under another distribution licence
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* [including the GNU Public Licence.]
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*/
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#ifndef NO_DSA
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#include <stdio.h>
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#include <string.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include "apps.h"
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#include <openssl/bio.h>
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#include <openssl/rand.h>
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#include <openssl/err.h>
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#include <openssl/bn.h>
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#include <openssl/dsa.h>
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#include <openssl/x509.h>
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#include <openssl/pem.h>
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#define DEFBITS 512
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#undef PROG
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#define PROG gendsa_main
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static long dsa_load_rand(char *names);
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int MAIN(int argc, char **argv)
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{
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char buffer[200];
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DSA *dsa=NULL;
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int ret=1;
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char *outfile=NULL;
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char *inrand=NULL,*randfile,*dsaparams=NULL;
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BIO *out=NULL,*in=NULL;
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EVP_CIPHER *enc=NULL;
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apps_startup();
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if (bio_err == NULL)
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if ((bio_err=BIO_new(BIO_s_file())) != NULL)
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BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
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argv++;
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argc--;
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for (;;)
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{
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if (argc <= 0) break;
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if (strcmp(*argv,"-out") == 0)
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{
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if (--argc < 1) goto bad;
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outfile= *(++argv);
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}
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else if (strcmp(*argv,"-rand") == 0)
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{
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if (--argc < 1) goto bad;
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inrand= *(++argv);
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}
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else if (strcmp(*argv,"-") == 0)
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goto bad;
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else if (dsaparams == NULL)
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{
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dsaparams= *argv;
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}
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#ifndef NO_DES
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else if (strcmp(*argv,"-des") == 0)
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enc=EVP_des_cbc();
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else if (strcmp(*argv,"-des3") == 0)
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enc=EVP_des_ede3_cbc();
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#endif
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#ifndef NO_IDEA
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else if (strcmp(*argv,"-idea") == 0)
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enc=EVP_idea_cbc();
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#endif
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else
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goto bad;
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argv++;
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argc--;
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}
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if (dsaparams == NULL)
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{
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bad:
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BIO_printf(bio_err,"usage: gendsa [args] dsaparam-file\n");
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BIO_printf(bio_err," -out file - output the key to 'file'\n");
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#ifndef NO_DES
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BIO_printf(bio_err," -des - encrypt the generated key with DES in cbc mode\n");
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BIO_printf(bio_err," -des3 - encrypt the generated key with DES in ede cbc mode (168 bit key)\n");
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#endif
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#ifndef NO_IDEA
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BIO_printf(bio_err," -idea - encrypt the generated key with IDEA in cbc mode\n");
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#endif
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BIO_printf(bio_err," -rand file:file:...\n");
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BIO_printf(bio_err," - load the file (or the files in the directory) into\n");
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BIO_printf(bio_err," the random number generator\n");
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BIO_printf(bio_err," dsaparam-file\n");
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BIO_printf(bio_err," - a DSA parameter file as generated by the dsaparam command\n");
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goto end;
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}
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in=BIO_new(BIO_s_file());
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if (!(BIO_read_filename(in,dsaparams)))
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{
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perror(dsaparams);
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goto end;
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}
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if ((dsa=PEM_read_bio_DSAparams(in,NULL,NULL)) == NULL)
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{
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BIO_printf(bio_err,"unable to load DSA parameter file\n");
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goto end;
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}
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BIO_free(in);
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out=BIO_new(BIO_s_file());
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if (out == NULL) goto end;
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if (outfile == NULL)
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BIO_set_fp(out,stdout,BIO_NOCLOSE);
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else
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{
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if (BIO_write_filename(out,outfile) <= 0)
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{
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perror(outfile);
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goto end;
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}
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}
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randfile=RAND_file_name(buffer,200);
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if ((randfile == NULL)|| !RAND_load_file(randfile,1024L*1024L))
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BIO_printf(bio_err,"unable to load 'random state'\n");
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if (inrand == NULL)
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BIO_printf(bio_err,"warning, not much extra random data, consider using the -rand option\n");
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else
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{
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BIO_printf(bio_err,"%ld semi-random bytes loaded\n",
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dsa_load_rand(inrand));
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}
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BIO_printf(bio_err,"Generating DSA key, %d bits\n",
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BN_num_bits(dsa->p));
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if (!DSA_generate_key(dsa)) goto end;
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if (randfile == NULL)
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BIO_printf(bio_err,"unable to write 'random state'\n");
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else
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RAND_write_file(randfile);
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if (!PEM_write_bio_DSAPrivateKey(out,dsa,enc,NULL,0,NULL))
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goto end;
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ret=0;
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end:
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if (ret != 0)
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ERR_print_errors(bio_err);
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if (out != NULL) BIO_free(out);
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if (dsa != NULL) DSA_free(dsa);
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EXIT(ret);
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}
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static long dsa_load_rand(char *name)
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{
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char *p,*n;
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int last;
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long tot=0;
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for (;;)
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{
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last=0;
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for (p=name; ((*p != '\0') && (*p != LIST_SEPARATOR_CHAR)); p++);
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if (*p == '\0') last=1;
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*p='\0';
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n=name;
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name=p+1;
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if (*n == '\0') break;
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tot+=RAND_load_file(n,1);
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if (last) break;
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}
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return(tot);
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}
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#endif
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