From eb8dd9dca1228af0cd132f515509051ecfabf6f6 Mon Sep 17 00:00:00 2001 From: cvs2svn Date: Mon, 14 Apr 2025 17:32:06 +0000 Subject: This commit was manufactured by cvs2git to create tag 'tb_20250414'. --- src/lib/libcrypto/ecdh/ecdh.c | 281 ------------------------------------------ 1 file changed, 281 deletions(-) delete mode 100644 src/lib/libcrypto/ecdh/ecdh.c (limited to 'src/lib/libcrypto/ecdh/ecdh.c') diff --git a/src/lib/libcrypto/ecdh/ecdh.c b/src/lib/libcrypto/ecdh/ecdh.c deleted file mode 100644 index dbb91f1991..0000000000 --- a/src/lib/libcrypto/ecdh/ecdh.c +++ /dev/null @@ -1,281 +0,0 @@ -/* $OpenBSD: ecdh.c,v 1.11 2025/02/17 09:25:45 tb Exp $ */ -/* ==================================================================== - * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. - * - * The Elliptic Curve Public-Key Crypto Library (ECC Code) included - * herein is developed by SUN MICROSYSTEMS, INC., and is contributed - * to the OpenSSL project. - * - * The ECC Code is licensed pursuant to the OpenSSL open source - * license provided below. - * - * The ECDH software is originally written by Douglas Stebila of - * Sun Microsystems Laboratories. - * - */ -/* ==================================================================== - * Copyright (c) 1998-2003 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 -#include -#include - -#include -#include -#include -#include - -#include "ec_local.h" - -/* - * Key derivation function from X9.63/SECG. - */ - -/* Way more than we will ever need */ -#define ECDH_KDF_MAX (1 << 30) - -int -ecdh_KDF_X9_63(unsigned char *out, size_t outlen, const unsigned char *Z, - size_t Zlen, const unsigned char *sinfo, size_t sinfolen, const EVP_MD *md) -{ - EVP_MD_CTX *mctx = NULL; - unsigned int i; - size_t mdlen; - unsigned char ctr[4]; - int rv = 0; - - if (sinfolen > ECDH_KDF_MAX || outlen > ECDH_KDF_MAX || - Zlen > ECDH_KDF_MAX) - return 0; - mctx = EVP_MD_CTX_new(); - if (mctx == NULL) - return 0; - mdlen = EVP_MD_size(md); - for (i = 1;; i++) { - unsigned char mtmp[EVP_MAX_MD_SIZE]; - if (!EVP_DigestInit_ex(mctx, md, NULL)) - goto err; - ctr[3] = i & 0xFF; - ctr[2] = (i >> 8) & 0xFF; - ctr[1] = (i >> 16) & 0xFF; - ctr[0] = (i >> 24) & 0xFF; - if (!EVP_DigestUpdate(mctx, Z, Zlen)) - goto err; - if (!EVP_DigestUpdate(mctx, ctr, sizeof(ctr))) - goto err; - if (!EVP_DigestUpdate(mctx, sinfo, sinfolen)) - goto err; - if (outlen >= mdlen) { - if (!EVP_DigestFinal(mctx, out, NULL)) - goto err; - outlen -= mdlen; - if (outlen == 0) - break; - out += mdlen; - } else { - if (!EVP_DigestFinal(mctx, mtmp, NULL)) - goto err; - memcpy(out, mtmp, outlen); - explicit_bzero(mtmp, mdlen); - break; - } - } - rv = 1; - - err: - EVP_MD_CTX_free(mctx); - - return rv; -} - -/* - * Based on the ECKAS-DH1 and ECSVDP-DH primitives in the IEEE 1363 standard. - */ -int -ecdh_compute_key(unsigned char **out, size_t *out_len, const EC_POINT *pub_key, - const EC_KEY *ecdh) -{ - BN_CTX *ctx; - BIGNUM *x; - const BIGNUM *priv_key; - const EC_GROUP *group; - EC_POINT *point = NULL; - unsigned char *buf = NULL; - int buf_len = 0; - int ret = 0; - - *out = NULL; - *out_len = 0; - - if ((ctx = BN_CTX_new()) == NULL) - goto err; - - BN_CTX_start(ctx); - - if ((x = BN_CTX_get(ctx)) == NULL) - goto err; - - if ((group = EC_KEY_get0_group(ecdh)) == NULL) - goto err; - - if (EC_POINT_is_on_curve(group, pub_key, ctx) <= 0) - goto err; - - if ((point = EC_POINT_new(group)) == NULL) { - ECerror(ERR_R_MALLOC_FAILURE); - goto err; - } - - if ((priv_key = EC_KEY_get0_private_key(ecdh)) == NULL) { - ECerror(EC_R_MISSING_PRIVATE_KEY); - goto err; - } - - if (!EC_POINT_mul(group, point, NULL, pub_key, priv_key, ctx)) { - ECerror(EC_R_POINT_ARITHMETIC_FAILURE); - goto err; - } - - if (!EC_POINT_get_affine_coordinates(group, point, x, NULL, ctx)) { - ECerror(EC_R_POINT_ARITHMETIC_FAILURE); - goto err; - } - - if ((buf_len = ECDH_size(ecdh)) < BN_num_bytes(x)) { - ECerror(ERR_R_INTERNAL_ERROR); - goto err; - } - if ((buf = calloc(1, buf_len)) == NULL) { - ECerror(ERR_R_MALLOC_FAILURE); - goto err; - } - if (BN_bn2binpad(x, buf, buf_len) != buf_len) { - ECerror(ERR_R_BN_LIB); - goto err; - } - - *out = buf; - *out_len = buf_len; - buf = NULL; - buf_len = 0; - - ret = 1; - - err: - EC_POINT_free(point); - BN_CTX_end(ctx); - BN_CTX_free(ctx); - freezero(buf, buf_len); - - return ret; -} - -int -ECDH_compute_key(void *out, size_t out_len, const EC_POINT *pub_key, - EC_KEY *eckey, - void *(*KDF)(const void *in, size_t inlen, void *out, size_t *out_len)) -{ - unsigned char *secret = NULL; - size_t secret_len = 0; - int ret = 0; - - if (eckey->meth->compute_key == NULL) { - ECerror(EC_R_NOT_IMPLEMENTED); - goto err; - } - - if (out_len > INT_MAX) { - ECerror(EC_R_INVALID_OUTPUT_LENGTH); - goto err; - } - - if (!eckey->meth->compute_key(&secret, &secret_len, pub_key, eckey)) - goto err; - - memset(out, 0, out_len); - if (KDF != NULL) { - if (KDF(secret, secret_len, out, &out_len) == NULL) { - ECerror(EC_R_KDF_FAILED); - goto err; - } - } else { - if (out_len < secret_len) { - /* The resulting key would be truncated. */ - ECerror(EC_R_KEY_TRUNCATION); - goto err; - } - out_len = secret_len; - memcpy(out, secret, out_len); - } - - if (out_len > INT_MAX) { - ECerror(EC_R_INVALID_OUTPUT_LENGTH); - goto err; - } - - ret = out_len; - - err: - freezero(secret, secret_len); - - return ret; -} -LCRYPTO_ALIAS(ECDH_compute_key); - -int -ECDH_size(const EC_KEY *eckey) -{ - return BN_num_bytes(eckey->group->p); -} -LCRYPTO_ALIAS(ECDH_size); -- cgit v1.2.3-55-g6feb