Add crypto files

deps/cyclone/include/aead/gcm.h

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+/**
+ * @file gcm.h
+ * @brief Galois/Counter Mode (GCM)
+ *
+ * @section 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
+ **/
+
+#ifndef _GCM_H
+#define _GCM_H
+
+//Dependencies
+#include "core/crypto.h"
+
+//Precalculated table width, in bits
+#ifndef GCM_TABLE_W
+   #define GCM_TABLE_W 4
+#elif (GCM_TABLE_W != 4 && GCM_TABLE_W != 8)
+   #error GCM_TABLE_W parameter is not valid
+#endif
+
+//4-bit or 8-bit precalculated table?
+#if (GCM_TABLE_W == 4)
+   #define GCM_TABLE_N 16
+   #define GCM_REVERSE_BITS(n) reverseInt4(n)
+#else
+   #define GCM_TABLE_N 256
+   #define GCM_REVERSE_BITS(n) reverseInt8(n)
+#endif
+
+//C++ guard
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/**
+ * @brief GCM context
+ **/
+
+typedef struct
+{
+   const CipherAlgo *cipherAlgo; ///<Cipher algorithm
+   void *cipherContext;          ///<Cipher algorithm context
+   uint32_t m[GCM_TABLE_N][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 *ctr);
+
+//C++ guard
+#ifdef __cplusplus
+}
+#endif
+
+#endif