Diff: cyclone_crypto/dh.h

Revision:

0:8918a71cdbe9

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cyclone_crypto/dh.h	Sat Feb 04 18:15:49 2017 +0000
@@ -0,0 +1,74 @@
+/**
+ * @file dh.h
+ * @brief Diffie-Hellman key exchange
+ *
+ * @section License
+ *
+ * Copyright (C) 2010-2017 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 1.7.6
+ **/
+
+#ifndef _DH_H
+#define _DH_H
+
+//Dependencies
+#include "crypto.h"
+#include "mpi.h"
+
+
+/**
+ * @brief Diffie-Hellman parameters
+ **/
+
+typedef struct
+{
+   Mpi p; ///<Prime modulus
+   Mpi g; ///<Generator
+} DhParameters;
+
+
+/**
+ * @brief Diffie-Hellman context
+ **/
+
+typedef struct
+{
+   DhParameters params; //Diffie-Hellman parameters
+   Mpi xa;              ///<One's own private value
+   Mpi ya;              ///<One's own public value
+   Mpi yb;              ///<Peer's public value
+} DhContext;
+
+
+//Diffie-Hellman related functions
+void dhInit(DhContext *context);
+void dhFree(DhContext *context);
+
+error_t dhGenerateKeyPair(DhContext *context,
+   const PrngAlgo *prngAlgo, void *prngContext);
+
+error_t dhCheckPublicKey(DhParameters *params, const Mpi *publicKey);
+
+error_t dhComputeSharedSecret(DhContext *context,
+   uint8_t *output, size_t outputSize, size_t *outputLength);
+
+#endif
+