Add KBOOT.

apps/elftosb/common/crc.h

@@ -0,0 +1,51 @@
+/*
+ * File:	crc.h
+ *
+ * Copyright (c) Freescale Semiconductor, Inc. All rights reserved.
+ * See included license file for license details.
+ */
+#if !defined(_crc_h_)
+#define CRYPTOPP_CRC32_H
+
+#include "stdafx.h"
+
+const uint32_t CRC32_NEGL = 0xffffffffL;
+
+#ifdef __LITTLE_ENDIAN__
+#define CRC32_INDEX(c) (c & 0xff)
+#define CRC32_SHIFTED(c) (c >> 8)
+#else
+#define CRC32_INDEX(c) (c >> 24)
+#define CRC32_SHIFTED(c) (c << 8)
+#endif
+
+//! CRC Checksum Calculation
+class CRC32
+{
+public:
+    enum
+    {
+        DIGESTSIZE = 4
+    };
+
+    CRC32();
+
+    void update(const uint8_t *input, unsigned length);
+
+    void truncatedFinal(uint8_t *hash, unsigned size);
+
+    void updateByte(uint8_t b) { m_crc = m_tab[CRC32_INDEX(m_crc) ^ b] ^ CRC32_SHIFTED(m_crc); }
+    uint8_t getCrcByte(unsigned i) const { return ((uint8_t *)&(m_crc))[i]; }
+private:
+    void reset()
+    {
+        m_crc = CRC32_NEGL;
+        m_count = 0;
+    }
+
+    static const uint32_t m_tab[256];
+    uint32_t m_crc;
+    unsigned m_count;
+};
+
+#endif // _crc_h_