mirror of
https://github.com/openssl/openssl.git
synced 2024-12-27 06:21:43 +08:00
8020d79b40
Reviewed-by: Richard Levitte <levitte@openssl.org> (Merged from https://github.com/openssl/openssl/pull/14512)
66 lines
2.2 KiB
C
66 lines
2.2 KiB
C
/*
|
|
* Copyright 2015-2021 The OpenSSL Project Authors. All Rights Reserved.
|
|
*
|
|
* Licensed under the Apache License 2.0 (the "License"). You may not use
|
|
* this file except in compliance with the License. You can obtain a copy
|
|
* in the file LICENSE in the source distribution or at
|
|
* https://www.openssl.org/source/license.html
|
|
*/
|
|
|
|
/*
|
|
* ECDH low level APIs are deprecated for public use, but still ok for
|
|
* internal use.
|
|
*/
|
|
#include "internal/deprecated.h"
|
|
|
|
#include <string.h>
|
|
#include <openssl/core_names.h>
|
|
#include <openssl/ec.h>
|
|
#include <openssl/evp.h>
|
|
#include <openssl/kdf.h>
|
|
#include "ec_local.h"
|
|
|
|
/* Key derivation function from X9.63/SECG */
|
|
int ossl_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,
|
|
OSSL_LIB_CTX *libctx, const char *propq)
|
|
{
|
|
int ret = 0;
|
|
EVP_KDF_CTX *kctx = NULL;
|
|
OSSL_PARAM params[4], *p = params;
|
|
const char *mdname = EVP_MD_name(md);
|
|
EVP_KDF *kdf = EVP_KDF_fetch(libctx, OSSL_KDF_NAME_X963KDF, propq);
|
|
|
|
if ((kctx = EVP_KDF_CTX_new(kdf)) != NULL) {
|
|
*p++ = OSSL_PARAM_construct_utf8_string(OSSL_KDF_PARAM_DIGEST,
|
|
(char *)mdname, 0);
|
|
*p++ = OSSL_PARAM_construct_octet_string(OSSL_KDF_PARAM_KEY,
|
|
(void *)Z, Zlen);
|
|
*p++ = OSSL_PARAM_construct_octet_string(OSSL_KDF_PARAM_INFO,
|
|
(void *)sinfo, sinfolen);
|
|
*p = OSSL_PARAM_construct_end();
|
|
|
|
ret = EVP_KDF_derive(kctx, out, outlen, params) > 0;
|
|
EVP_KDF_CTX_free(kctx);
|
|
}
|
|
EVP_KDF_free(kdf);
|
|
return ret;
|
|
}
|
|
|
|
/*-
|
|
* The old name for ecdh_KDF_X9_63
|
|
* Retained for ABI compatibility
|
|
*/
|
|
#ifndef OPENSSL_NO_DEPRECATED_3_0
|
|
int ECDH_KDF_X9_62(unsigned char *out, size_t outlen,
|
|
const unsigned char *Z, size_t Zlen,
|
|
const unsigned char *sinfo, size_t sinfolen,
|
|
const EVP_MD *md)
|
|
{
|
|
return ossl_ecdh_kdf_X9_63(out, outlen, Z, Zlen, sinfo, sinfolen, md, NULL,
|
|
NULL);
|
|
}
|
|
#endif
|