Diff: cyclone_crypto/cipher_mode_gcm.h

Revision:

0:8918a71cdbe9

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cyclone_crypto/cipher_mode_gcm.h	Sat Feb 04 18:15:49 2017 +0000
@@ -0,0 +1,62 @@
+/**
+ * @file cipher_mode_gcm.h
+ * @brief Galois/Counter Mode (GCM)
+ *
+ * @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 _CIPHER_MODE_GCM_H
+#define _CIPHER_MODE_GCM_H
+
+//Dependencies
+#include "crypto.h"
+
+
+/**
+ * @brief GCM context
+ **/
+
+typedef struct
+{
+   const CipherAlgo *cipherAlgo; ///<Cipher algorithm
+   void *cipherContext;          ///<Cipher algorithm context
+   uint32_t m[16][4];            ///<Precalculated table
+} GcmContext;
+
+
+//GCM related functions
+error_t gcmInit(GcmContext *context, const CipherAlgo *cipherAlgo, void *cipherContext);
+
+error_t gcmEncrypt(GcmContext *context, const uint8_t *iv, size_t ivLen, const uint8_t *a,
+   size_t aLen, const uint8_t *p, uint8_t *c, size_t length, uint8_t *t, size_t tLen);
+
+error_t gcmDecrypt(GcmContext *context, const uint8_t *iv, size_t ivLen, const uint8_t *a,
+   size_t aLen, const uint8_t *c, uint8_t *p, size_t length, const uint8_t *t, size_t tLen);
+
+void gcmMul(GcmContext *context, uint8_t *x);
+void gcmXorBlock(uint8_t *x, const uint8_t *a, const uint8_t *b, size_t n);
+void gcmIncCounter(uint8_t *x);
+
+#endif
+