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|
/* $OpenBSD: ec.c,v 1.17 2014/07/25 06:05:32 doug Exp $ */
/*
* Written by Nils Larsch for the OpenSSL project.
*/
/* ====================================================================
* Copyright (c) 1998-2005 The OpenSSL Project. All rights reserved.
*
* 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 above 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 acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
*
* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For written permission, please contact
* openssl-core@openssl.org.
*
* 5. Products derived from this software may not be called "OpenSSL"
* nor may "OpenSSL" appear in their names without prior written
* permission of the OpenSSL Project.
*
* 6. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit (http://www.openssl.org/)"
*
* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
* EXPRESSED 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 OpenSSL PROJECT OR
* ITS 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.
* ====================================================================
*
* This product includes cryptographic software written by Eric Young
* (eay@cryptsoft.com). This product includes software written by Tim
* Hudson (tjh@cryptsoft.com).
*
*/
#include <openssl/opensslconf.h>
#ifndef OPENSSL_NO_EC
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "apps.h"
#include <openssl/bio.h>
#include <openssl/err.h>
#include <openssl/evp.h>
#include <openssl/pem.h>
/* -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
* -text - print a text version
* -param_out - print the elliptic curve parameters
* -conv_form arg - specifies the point encoding form
* -param_enc arg - specifies the parameter encoding
*/
int ec_main(int, char **);
int
ec_main(int argc, char **argv)
{
int ret = 1;
EC_KEY *eckey = NULL;
const EC_GROUP *group;
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, param_out = 0;
char *infile, *outfile, *prog, *engine;
char *passargin = NULL, *passargout = NULL;
char *passin = NULL, *passout = NULL;
point_conversion_form_t form = POINT_CONVERSION_UNCOMPRESSED;
int new_form = 0;
int asn1_flag = OPENSSL_EC_NAMED_CURVE;
int new_asn1_flag = 0;
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);
} else if (strcmp(*argv, "-engine") == 0) {
if (--argc < 1)
goto bad;
engine = *(++argv);
} else if (strcmp(*argv, "-noout") == 0)
noout = 1;
else if (strcmp(*argv, "-text") == 0)
text = 1;
else if (strcmp(*argv, "-conv_form") == 0) {
if (--argc < 1)
goto bad;
++argv;
new_form = 1;
if (strcmp(*argv, "compressed") == 0)
form = POINT_CONVERSION_COMPRESSED;
else if (strcmp(*argv, "uncompressed") == 0)
form = POINT_CONVERSION_UNCOMPRESSED;
else if (strcmp(*argv, "hybrid") == 0)
form = POINT_CONVERSION_HYBRID;
else
goto bad;
} else if (strcmp(*argv, "-param_enc") == 0) {
if (--argc < 1)
goto bad;
++argv;
new_asn1_flag = 1;
if (strcmp(*argv, "named_curve") == 0)
asn1_flag = OPENSSL_EC_NAMED_CURVE;
else if (strcmp(*argv, "explicit") == 0)
asn1_flag = 0;
else
goto bad;
} else if (strcmp(*argv, "-param_out") == 0)
param_out = 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");
BIO_printf(bio_err, " -engine e use engine e, "
"possibly a hardware device.\n");
BIO_printf(bio_err, " -des encrypt PEM output, "
"instead of 'des' every other \n"
" cipher "
"supported by OpenSSL can be used\n");
BIO_printf(bio_err, " -text print the key\n");
BIO_printf(bio_err, " -noout don't print key out\n");
BIO_printf(bio_err, " -param_out print the elliptic "
"curve parameters\n");
BIO_printf(bio_err, " -conv_form arg specifies the "
"point conversion form \n");
BIO_printf(bio_err, " possible values:"
" compressed\n");
BIO_printf(bio_err, " "
" uncompressed (default)\n");
BIO_printf(bio_err, " "
" hybrid\n");
BIO_printf(bio_err, " -param_enc arg specifies the way"
" the ec parameters are encoded\n");
BIO_printf(bio_err, " in the asn1 der "
"encoding\n");
BIO_printf(bio_err, " possible values:"
" named_curve (default)\n");
BIO_printf(bio_err, " "
"explicit\n");
goto end;
}
ERR_load_crypto_strings();
#ifndef OPENSSL_NO_ENGINE
setup_engine(bio_err, engine, 0);
#endif
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 EC key\n");
if (informat == FORMAT_ASN1) {
if (pubin)
eckey = d2i_EC_PUBKEY_bio(in, NULL);
else
eckey = d2i_ECPrivateKey_bio(in, NULL);
} else if (informat == FORMAT_PEM) {
if (pubin)
eckey = PEM_read_bio_EC_PUBKEY(in, NULL, NULL,
NULL);
else
eckey = PEM_read_bio_ECPrivateKey(in, NULL, NULL,
passin);
} else {
BIO_printf(bio_err, "bad input format specified for key\n");
goto end;
}
if (eckey == 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);
} else {
if (BIO_write_filename(out, outfile) <= 0) {
perror(outfile);
goto end;
}
}
group = EC_KEY_get0_group(eckey);
if (new_form)
EC_KEY_set_conv_form(eckey, form);
if (new_asn1_flag)
EC_KEY_set_asn1_flag(eckey, asn1_flag);
if (text)
if (!EC_KEY_print(out, eckey, 0)) {
perror(outfile);
ERR_print_errors(bio_err);
goto end;
}
if (noout) {
ret = 0;
goto end;
}
BIO_printf(bio_err, "writing EC key\n");
if (outformat == FORMAT_ASN1) {
if (param_out)
i = i2d_ECPKParameters_bio(out, group);
else if (pubin || pubout)
i = i2d_EC_PUBKEY_bio(out, eckey);
else
i = i2d_ECPrivateKey_bio(out, eckey);
} else if (outformat == FORMAT_PEM) {
if (param_out)
i = PEM_write_bio_ECPKParameters(out, group);
else if (pubin || pubout)
i = PEM_write_bio_EC_PUBKEY(out, eckey);
else
i = PEM_write_bio_ECPrivateKey(out, eckey, enc,
NULL, 0, NULL, passout);
} else {
BIO_printf(bio_err, "bad output format specified for "
"outfile\n");
goto end;
}
if (!i) {
BIO_printf(bio_err, "unable to write private key\n");
ERR_print_errors(bio_err);
} else
ret = 0;
end:
BIO_free(in);
if (out)
BIO_free_all(out);
if (eckey)
EC_KEY_free(eckey);
free(passin);
free(passout);
return (ret);
}
#endif
|
