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97 lines
3.5 KiB
C
Executable File
97 lines
3.5 KiB
C
Executable File
/* ====================================================================
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* Copyright (c) 2007 - 2016 The GmSSL 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 GmSSL Project.
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* (http://gmssl.org/)"
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*
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* 4. The name "GmSSL Project" must not be used to endorse or promote
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* products derived from this software without prior written
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* permission. For written permission, please contact
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* guanzhi1980@gmail.com.
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*
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* 5. Products derived from this software may not be called "GmSSL"
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* nor may "GmSSL" appear in their names without prior written
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* permission of the GmSSL 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 GmSSL Project
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* (http://gmssl.org/)"
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*
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* THIS SOFTWARE IS PROVIDED BY THE GmSSL 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 GmSSL 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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#include <openssl/evp.h>
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#include <openssl/ecdh.h>
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#include <openssl/objects.h>
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#include <openssl/cpk.h>
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#include "cpk_lcl.h"
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int CPK_PUBLIC_PARAMS_compute_share_key(CPK_PUBLIC_PARAMS *params,
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void *out, size_t outlen, const char *id, EVP_PKEY *priv_key,
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void *(*kdf)(const void *in, size_t inlen, void *out, size_t *outlen))
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{
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int ret = 0;
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EVP_PKEY *pub_key = NULL;
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int pkey_type = OBJ_obj2nid(params->pkey_algor->algorithm);
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OPENSSL_assert(kdf != NULL);
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printf("%d\n", __LINE__);
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if (EVP_PKEY_id(priv_key) != pkey_type) {
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CPKerr(CPK_F_CPK_PUBLIC_PARAMS_COMPUTE_SHARE_KEY,
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ERR_R_MALLOC_FAILURE); //FIXME: ERR_R_XXX
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goto err;
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}
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if (!(pub_key = CPK_PUBLIC_PARAMS_extract_public_key(params, id))) {
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CPKerr(CPK_F_CPK_PUBLIC_PARAMS_COMPUTE_SHARE_KEY,
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ERR_R_MALLOC_FAILURE); //FIXME: ERR_R_XXX
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goto err;
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}
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if (pkey_type == EVP_PKEY_EC) {
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if (!ECDH_compute_key(out, outlen,
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EC_KEY_get0_public_key((EC_KEY *)EVP_PKEY_get0(pub_key)),
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(EC_KEY *)EVP_PKEY_get0(priv_key), kdf)) {
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CPKerr(CPK_F_CPK_PUBLIC_PARAMS_COMPUTE_SHARE_KEY,
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ERR_R_MALLOC_FAILURE); //FIXME: ERR_R_XXX
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goto err;
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}
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} else if (pkey_type == EVP_PKEY_DH) {
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// not supported yet
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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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return ret;
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}
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