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cyclone_crypto/ecdh.h@0:8918a71cdbe9, 2017-02-04 (annotated)

Committer:
Sergunb
Date:
Sat Feb 04 18:15:49 2017 +0000
Revision:
0:8918a71cdbe9
nothing else

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Sergunb 0:8918a71cdbe9 1 /**
Sergunb 0:8918a71cdbe9 2 * @file ecdh.h
Sergunb 0:8918a71cdbe9 3 * @brief ECDH (Elliptic Curve Diffie-Hellman) key exchange
Sergunb 0:8918a71cdbe9 4 *
Sergunb 0:8918a71cdbe9 5 * @section License
Sergunb 0:8918a71cdbe9 6 *
Sergunb 0:8918a71cdbe9 7 * Copyright (C) 2010-2017 Oryx Embedded SARL. All rights reserved.
Sergunb 0:8918a71cdbe9 8 *
Sergunb 0:8918a71cdbe9 9 * This file is part of CycloneCrypto Open.
Sergunb 0:8918a71cdbe9 10 *
Sergunb 0:8918a71cdbe9 11 * This program is free software; you can redistribute it and/or
Sergunb 0:8918a71cdbe9 12 * modify it under the terms of the GNU General Public License
Sergunb 0:8918a71cdbe9 13 * as published by the Free Software Foundation; either version 2
Sergunb 0:8918a71cdbe9 14 * of the License, or (at your option) any later version.
Sergunb 0:8918a71cdbe9 15 *
Sergunb 0:8918a71cdbe9 16 * This program is distributed in the hope that it will be useful,
Sergunb 0:8918a71cdbe9 17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
Sergunb 0:8918a71cdbe9 18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
Sergunb 0:8918a71cdbe9 19 * GNU General Public License for more details.
Sergunb 0:8918a71cdbe9 20 *
Sergunb 0:8918a71cdbe9 21 * You should have received a copy of the GNU General Public License
Sergunb 0:8918a71cdbe9 22 * along with this program; if not, write to the Free Software Foundation,
Sergunb 0:8918a71cdbe9 23 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
Sergunb 0:8918a71cdbe9 24 *
Sergunb 0:8918a71cdbe9 25 * @author Oryx Embedded SARL (www.oryx-embedded.com)
Sergunb 0:8918a71cdbe9 26 * @version 1.7.6
Sergunb 0:8918a71cdbe9 27 **/
Sergunb 0:8918a71cdbe9 28
Sergunb 0:8918a71cdbe9 29 #ifndef _ECDH_H
Sergunb 0:8918a71cdbe9 30 #define _ECDH_H
Sergunb 0:8918a71cdbe9 31
Sergunb 0:8918a71cdbe9 32 //Dependencies
Sergunb 0:8918a71cdbe9 33 #include "crypto.h"
Sergunb 0:8918a71cdbe9 34 #include "ec.h"
Sergunb 0:8918a71cdbe9 35
Sergunb 0:8918a71cdbe9 36
Sergunb 0:8918a71cdbe9 37 /**
Sergunb 0:8918a71cdbe9 38 * @brief ECDH context
Sergunb 0:8918a71cdbe9 39 **/
Sergunb 0:8918a71cdbe9 40
Sergunb 0:8918a71cdbe9 41 typedef struct
Sergunb 0:8918a71cdbe9 42 {
Sergunb 0:8918a71cdbe9 43 EcDomainParameters params; //EC domain parameters
Sergunb 0:8918a71cdbe9 44 Mpi da; ///<One's own private key
Sergunb 0:8918a71cdbe9 45 EcPoint qa; ///<One's own public key
Sergunb 0:8918a71cdbe9 46 EcPoint qb; ///<Peer's public key
Sergunb 0:8918a71cdbe9 47 } EcdhContext;
Sergunb 0:8918a71cdbe9 48
Sergunb 0:8918a71cdbe9 49
Sergunb 0:8918a71cdbe9 50 //ECDH related functions
Sergunb 0:8918a71cdbe9 51 void ecdhInit(EcdhContext *context);
Sergunb 0:8918a71cdbe9 52 void ecdhFree(EcdhContext *context);
Sergunb 0:8918a71cdbe9 53
Sergunb 0:8918a71cdbe9 54 error_t ecdhGenerateKeyPair(EcdhContext *context,
Sergunb 0:8918a71cdbe9 55 const PrngAlgo *prngAlgo, void *prngContext);
Sergunb 0:8918a71cdbe9 56
Sergunb 0:8918a71cdbe9 57 error_t ecdhCheckPublicKey(const EcDomainParameters *params, EcPoint *publicKey);
Sergunb 0:8918a71cdbe9 58
Sergunb 0:8918a71cdbe9 59 error_t ecdhComputeSharedSecret(EcdhContext *context,
Sergunb 0:8918a71cdbe9 60 uint8_t *output, size_t outputSize, size_t *outputLength);
Sergunb 0:8918a71cdbe9 61
Sergunb 0:8918a71cdbe9 62 #endif
Sergunb 0:8918a71cdbe9 63