ecdh.h File Reference

ECDH (Elliptic Curve Diffie-Hellman) key exchange. More...

#include "core/crypto.h"
#include "ecc/ec.h"
#include "ecc/x25519.h"
#include "ecc/x448.h"

Go to the source code of this file.

Data Structures
struct	EcdhContext
	ECDH context. More...

Functions
void	ecdhInit (EcdhContext *context)
	Initialize ECDH context. More...
void	ecdhFree (EcdhContext *context)
	Release ECDH context. More...
error_t	ecdhGenerateKeyPair (EcdhContext *context, const PrngAlgo *prngAlgo, void *prngContext)
	ECDH key pair generation. More...
error_t	ecdhCheckPublicKey (const EcDomainParameters *params, EcPoint *publicKey)
	Check ECDH public key. More...
error_t	ecdhComputeSharedSecret (EcdhContext *context, uint8_t *output, size_t outputSize, size_t *outputLen)
	Compute ECDH shared secret. More...

Detailed Description

ECDH (Elliptic Curve Diffie-Hellman) key exchange.

License

SPDX-License-Identifier: GPL-2.0-or-later

Copyright (C) 2010-2024 Oryx Embedded SARL. All rights reserved.

This file is part of CycloneCRYPTO Open.

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

Author

Oryx Embedded SARL (www.oryx-embedded.com)

Version

2.4.4

Definition in file ecdh.h.

Function Documentation

ecdhCheckPublicKey()

error_t ecdhCheckPublicKey	(	const EcDomainParameters *	params,
		EcPoint *	publicKey
	)

Check ECDH public key.

Parameters

[in]	params	EC domain parameters
[in]	publicKey	Public key to be checked

Returns

Error code

Definition at line 227 of file ecdh.c.

ecdhComputeSharedSecret()

error_t ecdhComputeSharedSecret	(	EcdhContext *	context,
		uint8_t *	output,
		size_t	outputSize,
		size_t *	outputLen
	)

Compute ECDH shared secret.

Parameters

[in]	context	Pointer to the ECDH context
[out]	output	Buffer where to store the shared secret
[in]	outputSize	Size of the buffer in bytes
[out]	outputLen	Length of the resulting shared secret

Returns

Error code

Definition at line 340 of file ecdh.c.

ecdhFree()

void ecdhFree

(

EcdhContext *

context

)

Release ECDH context.

Parameters

[in]

context

Pointer to the ECDH context

Definition at line 65 of file ecdh.c.

ecdhGenerateKeyPair()

error_t ecdhGenerateKeyPair	(	EcdhContext *	context,
		const PrngAlgo *	prngAlgo,
		void *	prngContext
	)

ECDH key pair generation.

Parameters

[in]	context	Pointer to the ECDH context
[in]	prngAlgo	PRNG algorithm
[in]	prngContext	Pointer to the PRNG context

Returns

Error code

Definition at line 85 of file ecdh.c.

ecdhInit()

void ecdhInit

(

EcdhContext *

context

)

Initialize ECDH context.

Parameters

[in]

context

Pointer to the ECDH context

Definition at line 48 of file ecdh.c.