Add crypto files

deps/cyclone/include/hash/sha256.h

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+/**
+ * @file sha256.h
+ * @brief SHA-256 (Secure Hash Algorithm 256)
+ *
+ * @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 _SHA256_H
+#define _SHA256_H
+
+//Dependencies
+#include "core/crypto.h"
+
+//Application specific context
+#ifndef SHA256_PRIVATE_CONTEXT
+   #define SHA256_PRIVATE_CONTEXT
+#endif
+
+//SHA-256 block size
+#define SHA256_BLOCK_SIZE 64
+//SHA-256 digest size
+#define SHA256_DIGEST_SIZE 32
+//Minimum length of the padding string
+#define SHA256_MIN_PAD_SIZE 9
+//Common interface for hash algorithms
+#define SHA256_HASH_ALGO (&sha256HashAlgo)
+
+//C++ guard
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/**
+ * @brief SHA-256 algorithm context
+ **/
+
+typedef struct
+{
+   union
+   {
+      uint32_t h[8];
+      uint8_t digest[32];
+   };
+   union
+   {
+      uint32_t w[16];
+      uint8_t buffer[64];
+   };
+   size_t size;
+   uint64_t totalSize;
+   SHA256_PRIVATE_CONTEXT
+} Sha256Context;
+
+
+//SHA-256 related constants
+extern const uint8_t SHA256_OID[9];
+extern const HashAlgo sha256HashAlgo;
+
+//SHA-256 related functions
+error_t sha256Compute(const void *data, size_t length, uint8_t *digest);
+void sha256Init(Sha256Context *context);
+void sha256Update(Sha256Context *context, const void *data, size_t length);
+void sha256Final(Sha256Context *context, uint8_t *digest);
+void sha256FinalRaw(Sha256Context *context, uint8_t *digest);
+void sha256ProcessBlock(Sha256Context *context);
+
+//C++ guard
+#ifdef __cplusplus
+}
+#endif
+
+#endif