File: [local] / src / usr.bin / openssl / dsa.c (download)
Revision 1.14, Wed Jul 10 10:28:28 2019 UTC (4 years, 11 months ago) by inoguchi
Branch: MAIN
Changes since 1.13: +8 -2 lines
Add missing option openssl dsa -modulus
ok bcook@ jsing@
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/* $OpenBSD: dsa.c,v 1.14 2019/07/10 10:28:28 inoguchi 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 <stdio.h>
#include <stdlib.h>
#include <time.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/evp.h>
#include <openssl/pem.h>
#include <openssl/x509.h>
static struct {
const EVP_CIPHER *enc;
char *infile;
int informat;
int modulus;
int noout;
char *outfile;
int outformat;
char *passargin;
char *passargout;
int pubin;
int pubout;
int pvk_encr;
int text;
} dsa_config;
static int
dsa_opt_enc(int argc, char **argv, int *argsused)
{
char *name = argv[0];
if (*name++ != '-')
return (1);
if ((dsa_config.enc = EVP_get_cipherbyname(name)) != NULL) {
*argsused = 1;
return (0);
}
return (1);
}
static struct option dsa_options[] = {
{
.name = "in",
.argname = "file",
.desc = "Input file (default stdin)",
.type = OPTION_ARG,
.opt.arg = &dsa_config.infile,
},
{
.name = "inform",
.argname = "format",
.desc = "Input format (PEM (default) or any other supported"
" format)",
.type = OPTION_ARG_FORMAT,
.opt.value = &dsa_config.informat,
},
{
.name = "modulus",
.desc = "Print the DSA public value",
.type = OPTION_FLAG,
.opt.flag = &dsa_config.modulus,
},
{
.name = "noout",
.desc = "No output",
.type = OPTION_FLAG,
.opt.flag = &dsa_config.noout,
},
{
.name = "out",
.argname = "file",
.desc = "Output file (default stdout)",
.type = OPTION_ARG,
.opt.arg = &dsa_config.outfile,
},
{
.name = "outform",
.argname = "format",
.desc = "Output format (DER, MSBLOB, PEM (default) or PVK)",
.type = OPTION_ARG_FORMAT,
.opt.value = &dsa_config.outformat,
},
{
.name = "passin",
.argname = "source",
.desc = "Input file passphrase source",
.type = OPTION_ARG,
.opt.arg = &dsa_config.passargin,
},
{
.name = "passout",
.argname = "source",
.desc = "Output file passphrase source",
.type = OPTION_ARG,
.opt.arg = &dsa_config.passargout,
},
{
.name = "pubin",
.desc = "Read a public key from the input file instead of"
" private key",
.type = OPTION_FLAG,
.opt.flag = &dsa_config.pubin,
},
{
.name = "pubout",
.desc = "Output a public key instead of private key",
.type = OPTION_FLAG,
.opt.flag = &dsa_config.pubout,
},
{
.name = "pvk-none",
.desc = "PVK encryption level",
.type = OPTION_VALUE,
.value = 0,
.opt.value = &dsa_config.pvk_encr,
},
{
.name = "pvk-strong",
.desc = "PVK encryption level (default)",
.type = OPTION_VALUE,
.value = 2,
.opt.value = &dsa_config.pvk_encr,
},
{
.name = "pvk-weak",
.desc = "PVK encryption level",
.type = OPTION_VALUE,
.value = 1,
.opt.value = &dsa_config.pvk_encr,
},
{
.name = "text",
.desc = "Print the key in text form",
.type = OPTION_FLAG,
.opt.flag = &dsa_config.text,
},
{
.name = NULL,
.type = OPTION_ARGV_FUNC,
.opt.argvfunc = dsa_opt_enc,
},
{ NULL },
};
static void
dsa_usage(void)
{
int n = 0;
fprintf(stderr,
"usage: dsa [-in file] [-inform format] [-modulus] [-noout]\n"
" [-out file] [-outform format] [-passin src] [-passout src]\n"
" [-pubin] [-pubout] [-pvk-none | -pvk-strong | -pvk-weak]\n"
" [-text] [-ciphername]\n\n");
options_usage(dsa_options);
fprintf(stderr, "\n");
fprintf(stderr, "Valid ciphername values:\n\n");
OBJ_NAME_do_all_sorted(OBJ_NAME_TYPE_CIPHER_METH, show_cipher, &n);
fprintf(stderr, "\n");
}
int
dsa_main(int argc, char **argv)
{
int ret = 1;
DSA *dsa = NULL;
int i;
BIO *in = NULL, *out = NULL;
char *passin = NULL, *passout = NULL;
if (single_execution) {
if (pledge("stdio cpath wpath rpath tty", NULL) == -1) {
perror("pledge");
exit(1);
}
}
memset(&dsa_config, 0, sizeof(dsa_config));
dsa_config.pvk_encr = 2;
dsa_config.informat = FORMAT_PEM;
dsa_config.outformat = FORMAT_PEM;
if (options_parse(argc, argv, dsa_options, NULL, NULL) != 0) {
dsa_usage();
goto end;
}
if (!app_passwd(bio_err, dsa_config.passargin, dsa_config.passargout,
&passin, &passout)) {
BIO_printf(bio_err, "Error getting passwords\n");
goto end;
}
in = BIO_new(BIO_s_file());
out = BIO_new(BIO_s_file());
if (in == NULL || out == NULL) {
ERR_print_errors(bio_err);
goto end;
}
if (dsa_config.infile == NULL)
BIO_set_fp(in, stdin, BIO_NOCLOSE);
else {
if (BIO_read_filename(in, dsa_config.infile) <= 0) {
perror(dsa_config.infile);
goto end;
}
}
BIO_printf(bio_err, "read DSA key\n");
{
EVP_PKEY *pkey;
if (dsa_config.pubin)
pkey = load_pubkey(bio_err, dsa_config.infile,
dsa_config.informat, 1, passin, "Public Key");
else
pkey = load_key(bio_err, dsa_config.infile,
dsa_config.informat, 1, passin, "Private Key");
if (pkey) {
dsa = EVP_PKEY_get1_DSA(pkey);
EVP_PKEY_free(pkey);
}
}
if (dsa == NULL) {
BIO_printf(bio_err, "unable to load Key\n");
ERR_print_errors(bio_err);
goto end;
}
if (dsa_config.outfile == NULL) {
BIO_set_fp(out, stdout, BIO_NOCLOSE);
} else {
if (BIO_write_filename(out, dsa_config.outfile) <= 0) {
perror(dsa_config.outfile);
goto end;
}
}
if (dsa_config.text) {
if (!DSA_print(out, dsa, 0)) {
perror(dsa_config.outfile);
ERR_print_errors(bio_err);
goto end;
}
}
if (dsa_config.modulus) {
fprintf(stdout, "Public Key=");
BN_print(out, dsa->pub_key);
fprintf(stdout, "\n");
}
if (dsa_config.noout)
goto end;
BIO_printf(bio_err, "writing DSA key\n");
if (dsa_config.outformat == FORMAT_ASN1) {
if (dsa_config.pubin || dsa_config.pubout)
i = i2d_DSA_PUBKEY_bio(out, dsa);
else
i = i2d_DSAPrivateKey_bio(out, dsa);
} else if (dsa_config.outformat == FORMAT_PEM) {
if (dsa_config.pubin || dsa_config.pubout)
i = PEM_write_bio_DSA_PUBKEY(out, dsa);
else
i = PEM_write_bio_DSAPrivateKey(out, dsa, dsa_config.enc,
NULL, 0, NULL, passout);
#if !defined(OPENSSL_NO_RSA) && !defined(OPENSSL_NO_RC4)
} else if (dsa_config.outformat == FORMAT_MSBLOB ||
dsa_config.outformat == FORMAT_PVK) {
EVP_PKEY *pk;
pk = EVP_PKEY_new();
EVP_PKEY_set1_DSA(pk, dsa);
if (dsa_config.outformat == FORMAT_PVK)
i = i2b_PVK_bio(out, pk, dsa_config.pvk_encr, 0,
passout);
else if (dsa_config.pubin || dsa_config.pubout)
i = i2b_PublicKey_bio(out, pk);
else
i = i2b_PrivateKey_bio(out, pk);
EVP_PKEY_free(pk);
#endif
} else {
BIO_printf(bio_err, "bad output format specified for outfile\n");
goto end;
}
if (i <= 0) {
BIO_printf(bio_err, "unable to write private key\n");
ERR_print_errors(bio_err);
} else
ret = 0;
end:
BIO_free(in);
BIO_free_all(out);
DSA_free(dsa);
free(passin);
free(passout);
return (ret);
}