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/* $OpenBSD: gendsa.c,v 1.10 2018/02/07 05:47:55 jsing Exp $ */
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
* All rights reserved.
*
* This package is an SSL implementation written
* by Eric Young (eay@cryptsoft.com).
* The implementation was written so as to conform with Netscapes SSL.
*
* This library is free for commercial and non-commercial use as long as
* the following conditions are aheared to. The following conditions
* apply to all code found in this distribution, be it the RC4, RSA,
* lhash, DES, etc., code; not just the SSL code. The SSL documentation
* included with this distribution is covered by the same copyright terms
* except that the holder is Tim Hudson (tjh@cryptsoft.com).
*
* Copyright remains Eric Young's, and as such any Copyright notices in
* the code are not to be removed.
* If this package is used in a product, Eric Young should be given attribution
* as the author of the parts of the library used.
* This can be in the form of a textual message at program startup or
* in documentation (online or textual) provided with the package.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* "This product includes cryptographic software written by
* Eric Young (eay@cryptsoft.com)"
* The word 'cryptographic' can be left out if the rouines from the library
* being used are not cryptographic related :-).
* 4. If you include any Windows specific code (or a derivative thereof) from
* the apps directory (application code) you must include an acknowledgement:
* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
*
* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* The licence and distribution terms for any publically available version or
* derivative of this code cannot be changed. i.e. this code cannot simply be
* copied and put under another distribution licence
* [including the GNU Public Licence.]
*/
#include <openssl/opensslconf.h> /* for OPENSSL_NO_DSA */
#include <sys/types.h>
#include <sys/stat.h>
#include <stdio.h>
#include <string.h>
#include "apps.h"
#include <openssl/bio.h>
#include <openssl/bn.h>
#include <openssl/dsa.h>
#include <openssl/err.h>
#include <openssl/pem.h>
#include <openssl/x509.h>
int
gendsa_main(int argc, char **argv)
{
DSA *dsa = NULL;
int ret = 1;
char *outfile = NULL;
char *dsaparams = NULL;
char *passargout = NULL, *passout = NULL;
BIO *out = NULL, *in = NULL;
const EVP_CIPHER *enc = NULL;
if (single_execution) {
if (pledge("stdio cpath wpath rpath tty", NULL) == -1) {
perror("pledge");
exit(1);
}
}
argv++;
argc--;
for (;;) {
if (argc <= 0)
break;
if (strcmp(*argv, "-out") == 0) {
if (--argc < 1)
goto bad;
outfile = *(++argv);
} else if (strcmp(*argv, "-passout") == 0) {
if (--argc < 1)
goto bad;
passargout = *(++argv);
}
else if (strcmp(*argv, "-") == 0)
goto bad;
#ifndef OPENSSL_NO_DES
else if (strcmp(*argv, "-des") == 0)
enc = EVP_des_cbc();
else if (strcmp(*argv, "-des3") == 0)
enc = EVP_des_ede3_cbc();
#endif
#ifndef OPENSSL_NO_IDEA
else if (strcmp(*argv, "-idea") == 0)
enc = EVP_idea_cbc();
#endif
#ifndef OPENSSL_NO_AES
else if (strcmp(*argv, "-aes128") == 0)
enc = EVP_aes_128_cbc();
else if (strcmp(*argv, "-aes192") == 0)
enc = EVP_aes_192_cbc();
else if (strcmp(*argv, "-aes256") == 0)
enc = EVP_aes_256_cbc();
#endif
#ifndef OPENSSL_NO_CAMELLIA
else if (strcmp(*argv, "-camellia128") == 0)
enc = EVP_camellia_128_cbc();
else if (strcmp(*argv, "-camellia192") == 0)
enc = EVP_camellia_192_cbc();
else if (strcmp(*argv, "-camellia256") == 0)
enc = EVP_camellia_256_cbc();
#endif
else if (**argv != '-' && dsaparams == NULL) {
dsaparams = *argv;
} else
goto bad;
argv++;
argc--;
}
if (dsaparams == NULL) {
bad:
BIO_printf(bio_err, "usage: gendsa [args] dsaparam-file\n");
BIO_printf(bio_err, " -out file - output the key to 'file'\n");
#ifndef OPENSSL_NO_DES
BIO_printf(bio_err, " -des - encrypt the generated key with DES in cbc mode\n");
BIO_printf(bio_err, " -des3 - encrypt the generated key with DES in ede cbc mode (168 bit key)\n");
#endif
#ifndef OPENSSL_NO_IDEA
BIO_printf(bio_err, " -idea - encrypt the generated key with IDEA in cbc mode\n");
#endif
#ifndef OPENSSL_NO_AES
BIO_printf(bio_err, " -aes128, -aes192, -aes256\n");
BIO_printf(bio_err, " encrypt PEM output with cbc aes\n");
#endif
#ifndef OPENSSL_NO_CAMELLIA
BIO_printf(bio_err, " -camellia128, -camellia192, -camellia256\n");
BIO_printf(bio_err, " encrypt PEM output with cbc camellia\n");
#endif
BIO_printf(bio_err, " dsaparam-file\n");
BIO_printf(bio_err, " - a DSA parameter file as generated by the dsaparam command\n");
goto end;
}
if (!app_passwd(bio_err, NULL, passargout, NULL, &passout)) {
BIO_printf(bio_err, "Error getting password\n");
goto end;
}
in = BIO_new(BIO_s_file());
if (!(BIO_read_filename(in, dsaparams))) {
perror(dsaparams);
goto end;
}
if ((dsa = PEM_read_bio_DSAparams(in, NULL, NULL, NULL)) == NULL) {
BIO_printf(bio_err, "unable to load DSA parameter file\n");
goto end;
}
BIO_free(in);
in = NULL;
out = BIO_new(BIO_s_file());
if (out == NULL)
goto end;
if (outfile == NULL) {
BIO_set_fp(out, stdout, BIO_NOCLOSE);
} else {
if (BIO_write_filename(out, outfile) <= 0) {
perror(outfile);
goto end;
}
}
BIO_printf(bio_err, "Generating DSA key, %d bits\n",
BN_num_bits(dsa->p));
if (!DSA_generate_key(dsa))
goto end;
if (!PEM_write_bio_DSAPrivateKey(out, dsa, enc, NULL, 0, NULL, passout))
goto end;
ret = 0;
end:
if (ret != 0)
ERR_print_errors(bio_err);
BIO_free(in);
BIO_free_all(out);
DSA_free(dsa);
free(passout);
return (ret);
}
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