openssl1.0/apps/dsa.c
2019-08-09 10:00:55 +02:00

373 lines
12 KiB
C

/* apps/dsa.c */
/* 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 */
#ifndef OPENSSL_NO_DSA
# include <stdio.h>
# include <stdlib.h>
# include <string.h>
# include <time.h>
# include "apps.h"
# include <openssl/bio.h>
# include <openssl/err.h>
# include <openssl/dsa.h>
# include <openssl/evp.h>
# include <openssl/x509.h>
# include <openssl/pem.h>
# include <openssl/bn.h>
# undef PROG
# define PROG dsa_main
/*-
* -inform arg - input format - default PEM (one of DER, NET or PEM)
* -outform arg - output format - default PEM
* -in arg - input file - default stdin
* -out arg - output file - default stdout
* -des - encrypt output if PEM format with DES in cbc mode
* -des3 - encrypt output if PEM format
* -idea - encrypt output if PEM format
* -aes128 - encrypt output if PEM format
* -aes192 - encrypt output if PEM format
* -aes256 - encrypt output if PEM format
* -camellia128 - encrypt output if PEM format
* -camellia192 - encrypt output if PEM format
* -camellia256 - encrypt output if PEM format
* -seed - encrypt output if PEM format
* -text - print a text version
* -modulus - print the DSA public key
*/
int MAIN(int, char **);
int MAIN(int argc, char **argv)
{
ENGINE *e = NULL;
int ret = 1;
DSA *dsa = NULL;
int i, badops = 0;
const EVP_CIPHER *enc = NULL;
BIO *in = NULL, *out = NULL;
int informat, outformat, text = 0, noout = 0;
int pubin = 0, pubout = 0;
char *infile, *outfile, *prog;
char *engine;
char *passargin = NULL, *passargout = NULL;
char *passin = NULL, *passout = NULL;
int modulus = 0;
int pvk_encr = 2;
apps_startup();
if (bio_err == NULL)
if ((bio_err = BIO_new(BIO_s_file())) != NULL)
BIO_set_fp(bio_err, stderr, BIO_NOCLOSE | BIO_FP_TEXT);
if (!load_config(bio_err, NULL))
goto end;
engine = NULL;
infile = NULL;
outfile = NULL;
informat = FORMAT_PEM;
outformat = FORMAT_PEM;
prog = argv[0];
argc--;
argv++;
while (argc >= 1) {
if (strcmp(*argv, "-inform") == 0) {
if (--argc < 1)
goto bad;
informat = str2fmt(*(++argv));
} else if (strcmp(*argv, "-outform") == 0) {
if (--argc < 1)
goto bad;
outformat = str2fmt(*(++argv));
} else if (strcmp(*argv, "-in") == 0) {
if (--argc < 1)
goto bad;
infile = *(++argv);
} else if (strcmp(*argv, "-out") == 0) {
if (--argc < 1)
goto bad;
outfile = *(++argv);
} else if (strcmp(*argv, "-passin") == 0) {
if (--argc < 1)
goto bad;
passargin = *(++argv);
} else if (strcmp(*argv, "-passout") == 0) {
if (--argc < 1)
goto bad;
passargout = *(++argv);
}
# ifndef OPENSSL_NO_ENGINE
else if (strcmp(*argv, "-engine") == 0) {
if (--argc < 1)
goto bad;
engine = *(++argv);
}
# endif
else if (strcmp(*argv, "-pvk-strong") == 0)
pvk_encr = 2;
else if (strcmp(*argv, "-pvk-weak") == 0)
pvk_encr = 1;
else if (strcmp(*argv, "-pvk-none") == 0)
pvk_encr = 0;
else if (strcmp(*argv, "-noout") == 0)
noout = 1;
else if (strcmp(*argv, "-text") == 0)
text = 1;
else if (strcmp(*argv, "-modulus") == 0)
modulus = 1;
else if (strcmp(*argv, "-pubin") == 0)
pubin = 1;
else if (strcmp(*argv, "-pubout") == 0)
pubout = 1;
else if ((enc = EVP_get_cipherbyname(&(argv[0][1]))) == NULL) {
BIO_printf(bio_err, "unknown option %s\n", *argv);
badops = 1;
break;
}
argc--;
argv++;
}
if (badops) {
bad:
BIO_printf(bio_err, "%s [options] <infile >outfile\n", prog);
BIO_printf(bio_err, "where options are\n");
BIO_printf(bio_err, " -inform arg input format - DER or PEM\n");
BIO_printf(bio_err, " -outform arg output format - DER or PEM\n");
BIO_printf(bio_err, " -in arg input file\n");
BIO_printf(bio_err,
" -passin arg input file pass phrase source\n");
BIO_printf(bio_err, " -out arg output file\n");
BIO_printf(bio_err,
" -passout arg output file pass phrase source\n");
# ifndef OPENSSL_NO_ENGINE
BIO_printf(bio_err,
" -engine e use engine e, possibly a hardware device.\n");
# endif
BIO_printf(bio_err,
" -des encrypt PEM output with cbc des\n");
BIO_printf(bio_err,
" -des3 encrypt PEM output with ede cbc des using 168 bit key\n");
# ifndef OPENSSL_NO_IDEA
BIO_printf(bio_err,
" -idea encrypt PEM output with cbc idea\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
# ifndef OPENSSL_NO_SEED
BIO_printf(bio_err,
" -seed encrypt PEM output with cbc seed\n");
# endif
BIO_printf(bio_err, " -text print the key in text\n");
BIO_printf(bio_err, " -noout don't print key out\n");
BIO_printf(bio_err, " -modulus print the DSA public value\n");
goto end;
}
ERR_load_crypto_strings();
e = setup_engine(bio_err, engine, 0);
if (!app_passwd(bio_err, passargin, 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 (infile == NULL)
BIO_set_fp(in, stdin, BIO_NOCLOSE);
else {
if (BIO_read_filename(in, infile) <= 0) {
perror(infile);
goto end;
}
}
BIO_printf(bio_err, "read DSA key\n");
{
EVP_PKEY *pkey;
if (pubin)
pkey = load_pubkey(bio_err, infile, informat, 1,
passin, e, "Public Key");
else
pkey = load_key(bio_err, infile, informat, 1,
passin, e, "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 (outfile == NULL) {
BIO_set_fp(out, stdout, BIO_NOCLOSE);
# ifdef OPENSSL_SYS_VMS
{
BIO *tmpbio = BIO_new(BIO_f_linebuffer());
out = BIO_push(tmpbio, out);
}
# endif
} else {
if (BIO_write_filename(out, outfile) <= 0) {
perror(outfile);
goto end;
}
}
if (text)
if (!DSA_print(out, dsa, 0)) {
perror(outfile);
ERR_print_errors(bio_err);
goto end;
}
if (modulus) {
fprintf(stdout, "Public Key=");
BN_print(out, dsa->pub_key);
fprintf(stdout, "\n");
}
if (noout)
goto end;
BIO_printf(bio_err, "writing DSA key\n");
if (outformat == FORMAT_ASN1) {
if (pubin || pubout)
i = i2d_DSA_PUBKEY_bio(out, dsa);
else
i = i2d_DSAPrivateKey_bio(out, dsa);
} else if (outformat == FORMAT_PEM) {
if (pubin || pubout)
i = PEM_write_bio_DSA_PUBKEY(out, dsa);
else
i = PEM_write_bio_DSAPrivateKey(out, dsa, enc,
NULL, 0, NULL, passout);
# if !defined(OPENSSL_NO_RSA) && !defined(OPENSSL_NO_RC4)
} else if (outformat == FORMAT_MSBLOB || outformat == FORMAT_PVK) {
EVP_PKEY *pk;
pk = EVP_PKEY_new();
if (pk == NULL)
goto end;
EVP_PKEY_set1_DSA(pk, dsa);
if (outformat == FORMAT_PVK)
i = i2b_PVK_bio(out, pk, pvk_encr, 0, passout);
else if (pubin || 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:
if (in != NULL)
BIO_free(in);
if (out != NULL)
BIO_free_all(out);
if (dsa != NULL)
DSA_free(dsa);
release_engine(e);
if (passin)
OPENSSL_free(passin);
if (passout)
OPENSSL_free(passout);
apps_shutdown();
OPENSSL_EXIT(ret);
}
#else /* !OPENSSL_NO_DSA */
# if PEDANTIC
static void *dummy = &dummy;
# endif
#endif