340 lines
8.3 KiB
C
340 lines
8.3 KiB
C
/* $OpenBSD: eck_prn.c,v 1.30 2023/11/21 22:05:33 tb Exp $ */
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/*
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* Written by Nils Larsch for the OpenSSL project.
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*/
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/* ====================================================================
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* Copyright (c) 1998-2005 The OpenSSL Project. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. All advertising materials mentioning features or use of this
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* software must display the following acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
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*
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* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
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* endorse or promote products derived from this software without
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* prior written permission. For written permission, please contact
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* openssl-core@openssl.org.
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*
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* 5. Products derived from this software may not be called "OpenSSL"
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* nor may "OpenSSL" appear in their names without prior written
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* permission of the OpenSSL Project.
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*
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* 6. Redistributions of any form whatsoever must retain the following
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* acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit (http://www.openssl.org/)"
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*
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* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
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* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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* ====================================================================
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*
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* This product includes cryptographic software written by Eric Young
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* (eay@cryptsoft.com). This product includes software written by Tim
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* Hudson (tjh@cryptsoft.com).
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*
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*/
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/* ====================================================================
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* Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
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* Portions originally developed by SUN MICROSYSTEMS, INC., and
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* contributed to the OpenSSL project.
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*/
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#include <stdio.h>
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#include <string.h>
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#include <openssl/bn.h>
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#include <openssl/ec.h>
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#include <openssl/err.h>
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#include <openssl/evp.h>
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#include "ec_local.h"
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int
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ECPKParameters_print_fp(FILE *fp, const EC_GROUP *x, int off)
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{
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BIO *b;
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int ret;
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if ((b = BIO_new(BIO_s_file())) == NULL) {
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ECerror(ERR_R_BUF_LIB);
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return (0);
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}
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BIO_set_fp(b, fp, BIO_NOCLOSE);
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ret = ECPKParameters_print(b, x, off);
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BIO_free(b);
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return (ret);
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}
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LCRYPTO_ALIAS(ECPKParameters_print_fp);
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int
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EC_KEY_print_fp(FILE *fp, const EC_KEY *x, int off)
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{
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BIO *b;
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int ret;
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if ((b = BIO_new(BIO_s_file())) == NULL) {
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ECerror(ERR_R_BIO_LIB);
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return (0);
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}
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BIO_set_fp(b, fp, BIO_NOCLOSE);
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ret = EC_KEY_print(b, x, off);
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BIO_free(b);
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return (ret);
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}
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LCRYPTO_ALIAS(EC_KEY_print_fp);
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int
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ECParameters_print_fp(FILE *fp, const EC_KEY *x)
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{
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BIO *b;
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int ret;
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if ((b = BIO_new(BIO_s_file())) == NULL) {
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ECerror(ERR_R_BIO_LIB);
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return (0);
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}
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BIO_set_fp(b, fp, BIO_NOCLOSE);
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ret = ECParameters_print(b, x);
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BIO_free(b);
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return (ret);
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}
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LCRYPTO_ALIAS(ECParameters_print_fp);
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int
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EC_KEY_print(BIO *bp, const EC_KEY *x, int off)
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{
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EVP_PKEY *pk;
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int ret = 0;
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if ((pk = EVP_PKEY_new()) == NULL)
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goto err;
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if (!EVP_PKEY_set1_EC_KEY(pk, (EC_KEY *) x))
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goto err;
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ret = EVP_PKEY_print_private(bp, pk, off, NULL);
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err:
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EVP_PKEY_free(pk);
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return ret;
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}
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LCRYPTO_ALIAS(EC_KEY_print);
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int
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ECParameters_print(BIO *bp, const EC_KEY *x)
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{
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EVP_PKEY *pk;
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int ret = 0;
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if ((pk = EVP_PKEY_new()) == NULL)
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goto err;
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if (!EVP_PKEY_set1_EC_KEY(pk, (EC_KEY *) x))
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goto err;
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ret = EVP_PKEY_print_params(bp, pk, 4, NULL);
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err:
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EVP_PKEY_free(pk);
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return ret;
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}
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LCRYPTO_ALIAS(ECParameters_print);
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static int
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ecpk_print_asn1_parameters(BIO *bp, const EC_GROUP *group, int off)
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{
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const char *nist_name;
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int nid;
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int ret = 0;
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if (!BIO_indent(bp, off, 128)) {
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ECerror(ERR_R_BIO_LIB);
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goto err;
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}
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if ((nid = EC_GROUP_get_curve_name(group)) == NID_undef) {
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ECerror(ERR_R_INTERNAL_ERROR);
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goto err;
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}
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if (BIO_printf(bp, "ASN1 OID: %s\n", OBJ_nid2sn(nid)) <= 0) {
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ECerror(ERR_R_BIO_LIB);
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goto err;
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}
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if ((nist_name = EC_curve_nid2nist(nid)) != NULL) {
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if (!BIO_indent(bp, off, 128)) {
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ECerror(ERR_R_BIO_LIB);
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goto err;
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}
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if (BIO_printf(bp, "NIST CURVE: %s\n", nist_name) <= 0) {
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ECerror(ERR_R_BIO_LIB);
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goto err;
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}
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}
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ret = 1;
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err:
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return ret;
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}
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static int
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ecpk_print_explicit_parameters(BIO *bp, const EC_GROUP *group, int off)
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{
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BN_CTX *ctx = NULL;
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const BIGNUM *order;
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BIGNUM *p, *a, *b, *cofactor;
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BIGNUM *gen = NULL;
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const EC_POINT *generator;
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const char *conversion_form;
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const unsigned char *seed;
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size_t seed_len;
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point_conversion_form_t form;
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int nid;
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int ret = 0;
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if ((ctx = BN_CTX_new()) == NULL) {
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ECerror(ERR_R_MALLOC_FAILURE);
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goto err;
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}
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BN_CTX_start(ctx);
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if ((p = BN_CTX_get(ctx)) == NULL)
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goto err;
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if ((a = BN_CTX_get(ctx)) == NULL)
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goto err;
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if ((b = BN_CTX_get(ctx)) == NULL)
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goto err;
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if ((cofactor = BN_CTX_get(ctx)) == NULL)
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goto err;
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if ((gen = BN_CTX_get(ctx)) == NULL)
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goto err;
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if (!EC_GROUP_get_curve(group, p, a, b, ctx)) {
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ECerror(ERR_R_EC_LIB);
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goto err;
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}
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if ((order = EC_GROUP_get0_order(group)) == NULL) {
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ECerror(ERR_R_EC_LIB);
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goto err;
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}
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if (!EC_GROUP_get_cofactor(group, cofactor, NULL)) {
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ECerror(ERR_R_EC_LIB);
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goto err;
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}
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if ((generator = EC_GROUP_get0_generator(group)) == NULL) {
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ECerror(ERR_R_EC_LIB);
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goto err;
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}
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form = EC_GROUP_get_point_conversion_form(group);
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if (EC_POINT_point2bn(group, generator, form, gen, ctx) == NULL) {
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ECerror(ERR_R_EC_LIB);
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goto err;
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}
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if (!BIO_indent(bp, off, 128))
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goto err;
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nid = EC_METHOD_get_field_type(EC_GROUP_method_of(group));
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if (BIO_printf(bp, "Field Type: %s\n", OBJ_nid2sn(nid)) <= 0)
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goto err;
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if (!bn_printf(bp, p, off, "Prime:"))
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goto err;
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if (!bn_printf(bp, a, off, "A: "))
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goto err;
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if (!bn_printf(bp, b, off, "B: "))
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goto err;
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if (form == POINT_CONVERSION_COMPRESSED)
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conversion_form = "compressed";
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else if (form == POINT_CONVERSION_UNCOMPRESSED)
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conversion_form = "uncompressed";
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else if (form == POINT_CONVERSION_HYBRID)
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conversion_form = "hybrid";
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else
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conversion_form = "unknown";
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if (!bn_printf(bp, gen, off, "Generator (%s):", conversion_form))
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goto err;
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if (!bn_printf(bp, order, off, "Order: "))
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goto err;
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if (!bn_printf(bp, cofactor, off, "Cofactor: "))
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goto err;
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if ((seed = EC_GROUP_get0_seed(group)) != NULL) {
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size_t i;
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seed_len = EC_GROUP_get_seed_len(group);
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/* XXX - ecx_buf_print() has a CBS version of this - dedup. */
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if (!BIO_indent(bp, off, 128))
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goto err;
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if (BIO_printf(bp, "Seed:") <= 0)
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goto err;
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for (i = 0; i < seed_len; i++) {
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const char *sep = ":";
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if (i % 15 == 0) {
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if (BIO_printf(bp, "\n") <= 0)
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goto err;
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if (!BIO_indent(bp, off + 4, 128))
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goto err;
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}
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if (i + 1 == seed_len)
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sep = "";
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if (BIO_printf(bp, "%02x%s", seed[i], sep) <= 0)
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goto err;
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}
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if (BIO_printf(bp, "\n") <= 0)
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goto err;
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}
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ret = 1;
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err:
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BN_CTX_end(ctx);
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BN_CTX_free(ctx);
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return ret;
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}
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int
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ECPKParameters_print(BIO *bp, const EC_GROUP *group, int off)
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{
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if (group == NULL) {
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ECerror(ERR_R_PASSED_NULL_PARAMETER);
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return 0;
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}
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if (EC_GROUP_get_asn1_flag(group))
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return ecpk_print_asn1_parameters(bp, group, off);
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return ecpk_print_explicit_parameters(bp, group, off);
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}
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LCRYPTO_ALIAS(ECPKParameters_print);
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