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#
O;_I|+ #/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* ECDH params to be used with kpp API
*
* Copyright (c) 2016, Intel Corporation
* Authors: Salvatore Benedetto
*/
#ifndef _CRYPTO_ECDH_
#define _CRYPTO_ECDH_
/**
* DOC: ECDH Helper Functions
*
* To use ECDH with the KPP cipher API, the following data structure and
* functions should be used.
*
* The ECC curves known to the ECDH implementation are specified in this
* header file.
*
* To use ECDH with KPP, the following functions should be used to operate on
* an ECDH private key. The packet private key that can be set with
* the KPP API function call of crypto_kpp_set_secret.
*/
/* Curves IDs */
#define ECC_CURVE_NIST_P192 0x0001
#define ECC_CURVE_NIST_P256 0x0002
#define ECC_CURVE_NIST_P384 0x0003
/**
* struct ecdh - define an ECDH private key
*
* @key: Private ECDH key
* @key_size: Size of the private ECDH key
*/
struct ecdh {
char *key;
unsigned short key_size;
};
/**
* crypto_ecdh_key_len() - Obtain the size of the private ECDH key
* @params: private ECDH