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|
/* $OpenBSD: eck_prn.c,v 1.39 2024/11/14 10:27:59 tb 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).
*
*/
/* ====================================================================
* Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
* Portions originally developed by SUN MICROSYSTEMS, INC., and
* contributed to the OpenSSL project.
*/
#include <stdio.h>
#include <openssl/bio.h>
#include <openssl/bn.h>
#include <openssl/ec.h>
#include <openssl/err.h>
#include <openssl/evp.h>
#include <openssl/objects.h>
#include "bn_local.h"
#include "ec_local.h"
int
EC_KEY_print(BIO *bio, const EC_KEY *ec_key, int off)
{
EVP_PKEY *pkey;
int ret = 0;
if ((pkey = EVP_PKEY_new()) == NULL)
goto err;
if (!EVP_PKEY_set1_EC_KEY(pkey, (EC_KEY *)ec_key))
goto err;
ret = EVP_PKEY_print_private(bio, pkey, off, NULL);
err:
EVP_PKEY_free(pkey);
return ret;
}
LCRYPTO_ALIAS(EC_KEY_print);
int
EC_KEY_print_fp(FILE *fp, const EC_KEY *ec_key, int off)
{
BIO *bio;
int ret;
if ((bio = BIO_new(BIO_s_file())) == NULL) {
ECerror(ERR_R_BIO_LIB);
return 0;
}
BIO_set_fp(bio, fp, BIO_NOCLOSE);
ret = EC_KEY_print(bio, ec_key, off);
BIO_free(bio);
return ret;
}
LCRYPTO_ALIAS(EC_KEY_print_fp);
int
ECParameters_print(BIO *bio, const EC_KEY *ec_key)
{
EVP_PKEY *pkey;
int ret = 0;
if ((pkey = EVP_PKEY_new()) == NULL)
goto err;
if (!EVP_PKEY_set1_EC_KEY(pkey, (EC_KEY *)ec_key))
goto err;
ret = EVP_PKEY_print_params(bio, pkey, 4, NULL);
err:
EVP_PKEY_free(pkey);
return ret;
}
LCRYPTO_ALIAS(ECParameters_print);
int
ECParameters_print_fp(FILE *fp, const EC_KEY *ec_key)
{
BIO *bio;
int ret;
if ((bio = BIO_new(BIO_s_file())) == NULL) {
ECerror(ERR_R_BIO_LIB);
return 0;
}
BIO_set_fp(bio, fp, BIO_NOCLOSE);
ret = ECParameters_print(bio, ec_key);
BIO_free(bio);
return ret;
}
LCRYPTO_ALIAS(ECParameters_print_fp);
static int
ecpk_print_asn1_parameters(BIO *bio, const EC_GROUP *group, int off)
{
const char *nist_name;
int nid;
int ret = 0;
if (!BIO_indent(bio, off, 128)) {
ECerror(ERR_R_BIO_LIB);
goto err;
}
if ((nid = EC_GROUP_get_curve_name(group)) == NID_undef) {
ECerror(ERR_R_INTERNAL_ERROR);
goto err;
}
if (BIO_printf(bio, "ASN1 OID: %s\n", OBJ_nid2sn(nid)) <= 0) {
ECerror(ERR_R_BIO_LIB);
goto err;
}
if ((nist_name = EC_curve_nid2nist(nid)) != NULL) {
if (!BIO_indent(bio, off, 128)) {
ECerror(ERR_R_BIO_LIB);
goto err;
}
if (BIO_printf(bio, "NIST CURVE: %s\n", nist_name) <= 0) {
ECerror(ERR_R_BIO_LIB);
goto err;
}
}
ret = 1;
err:
return ret;
}
static int
ecpk_print_explicit_parameters(BIO *bio, const EC_GROUP *group, int off)
{
BN_CTX *ctx = NULL;
const BIGNUM *order;
BIGNUM *p, *a, *b, *cofactor;
BIGNUM *gen = NULL;
const EC_POINT *generator;
const char *conversion_form;
const unsigned char *seed;
size_t seed_len;
point_conversion_form_t form;
int nid;
int ret = 0;
if ((ctx = BN_CTX_new()) == NULL) {
ECerror(ERR_R_MALLOC_FAILURE);
goto err;
}
BN_CTX_start(ctx);
if ((p = BN_CTX_get(ctx)) == NULL)
goto err;
if ((a = BN_CTX_get(ctx)) == NULL)
goto err;
if ((b = BN_CTX_get(ctx)) == NULL)
goto err;
if ((cofactor = BN_CTX_get(ctx)) == NULL)
goto err;
if ((gen = BN_CTX_get(ctx)) == NULL)
goto err;
if (!EC_GROUP_get_curve(group, p, a, b, ctx)) {
ECerror(ERR_R_EC_LIB);
goto err;
}
if ((order = EC_GROUP_get0_order(group)) == NULL) {
ECerror(ERR_R_EC_LIB);
goto err;
}
if (!EC_GROUP_get_cofactor(group, cofactor, NULL)) {
ECerror(ERR_R_EC_LIB);
goto err;
}
if ((generator = EC_GROUP_get0_generator(group)) == NULL) {
ECerror(ERR_R_EC_LIB);
goto err;
}
form = EC_GROUP_get_point_conversion_form(group);
if (EC_POINT_point2bn(group, generator, form, gen, ctx) == NULL) {
ECerror(ERR_R_EC_LIB);
goto err;
}
if (!BIO_indent(bio, off, 128))
goto err;
nid = ec_group_get_field_type(group);
if (BIO_printf(bio, "Field Type: %s\n", OBJ_nid2sn(nid)) <= 0)
goto err;
if (!bn_printf(bio, p, off, "Prime:"))
goto err;
if (!bn_printf(bio, a, off, "A: "))
goto err;
if (!bn_printf(bio, b, off, "B: "))
goto err;
if (form == POINT_CONVERSION_COMPRESSED)
conversion_form = "compressed";
else if (form == POINT_CONVERSION_UNCOMPRESSED)
conversion_form = "uncompressed";
else if (form == POINT_CONVERSION_HYBRID)
conversion_form = "hybrid";
else
conversion_form = "unknown";
if (!bn_printf(bio, gen, off, "Generator (%s):", conversion_form))
goto err;
if (!bn_printf(bio, order, off, "Order: "))
goto err;
if (!bn_printf(bio, cofactor, off, "Cofactor: "))
goto err;
if ((seed = EC_GROUP_get0_seed(group)) != NULL) {
size_t i;
seed_len = EC_GROUP_get_seed_len(group);
/* XXX - ecx_buf_print() has a CBS version of this - dedup. */
if (!BIO_indent(bio, off, 128))
goto err;
if (BIO_printf(bio, "Seed:") <= 0)
goto err;
for (i = 0; i < seed_len; i++) {
const char *sep = ":";
if (i % 15 == 0) {
if (BIO_printf(bio, "\n") <= 0)
goto err;
if (!BIO_indent(bio, off + 4, 128))
goto err;
}
if (i + 1 == seed_len)
sep = "";
if (BIO_printf(bio, "%02x%s", seed[i], sep) <= 0)
goto err;
}
if (BIO_printf(bio, "\n") <= 0)
goto err;
}
ret = 1;
err:
BN_CTX_end(ctx);
BN_CTX_free(ctx);
return ret;
}
int
ECPKParameters_print(BIO *bio, const EC_GROUP *group, int off)
{
if (group == NULL) {
ECerror(ERR_R_PASSED_NULL_PARAMETER);
return 0;
}
if (EC_GROUP_get_asn1_flag(group))
return ecpk_print_asn1_parameters(bio, group, off);
return ecpk_print_explicit_parameters(bio, group, off);
}
LCRYPTO_ALIAS(ECPKParameters_print);
int
ECPKParameters_print_fp(FILE *fp, const EC_GROUP *group, int off)
{
BIO *bio;
int ret;
if ((bio = BIO_new(BIO_s_file())) == NULL) {
ECerror(ERR_R_BUF_LIB);
return 0;
}
BIO_set_fp(bio, fp, BIO_NOCLOSE);
ret = ECPKParameters_print(bio, group, off);
BIO_free(bio);
return ret;
}
LCRYPTO_ALIAS(ECPKParameters_print_fp);
|
