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+/** @file
+ * IPRT - CRCs and Checksums.
+ */
+
+/*
+ * Copyright (C) 2006-2020 Oracle Corporation
+ *
+ * This file is part of VirtualBox Open Source Edition (OSE), as
+ * available from http://www.virtualbox.org. This file is free software;
+ * you can redistribute it and/or modify it under the terms of the GNU
+ * General Public License (GPL) as published by the Free Software
+ * Foundation, in version 2 as it comes in the "COPYING" file of the
+ * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
+ * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
+ *
+ * The contents of this file may alternatively be used under the terms
+ * of the Common Development and Distribution License Version 1.0
+ * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
+ * VirtualBox OSE distribution, in which case the provisions of the
+ * CDDL are applicable instead of those of the GPL.
+ *
+ * You may elect to license modified versions of this file under the
+ * terms and conditions of either the GPL or the CDDL or both.
+ */
+
+#ifndef IPRT_INCLUDED_crc_h
+#define IPRT_INCLUDED_crc_h
+#ifndef RT_WITHOUT_PRAGMA_ONCE
+# pragma once
+#endif
+
+#include <iprt/cdefs.h>
+#include <iprt/types.h>
+
+
+RT_C_DECLS_BEGIN
+
+/** @defgroup grp_rt_crc RTCrc - Checksums and CRCs.
+ * @ingroup grp_rt
+ * @{
+ */
+
+
+/** @defgroup grp_rt_crc32 CRC-32
+ * @{ */
+/**
+ * Calculate CRC-32 for a memory block.
+ *
+ * @returns CRC-32 for the memory block.
+ * @param pv Pointer to the memory block.
+ * @param cb Size of the memory block in bytes.
+ */
+RTDECL(uint32_t) RTCrc32(const void *pv, size_t cb);
+
+/**
+ * Start a multiblock CRC-32 calculation.
+ *
+ * @returns Start CRC-32.
+ */
+RTDECL(uint32_t) RTCrc32Start(void);
+
+/**
+ * Processes a multiblock of a CRC-32 calculation.
+ *
+ * @returns Intermediate CRC-32 value.
+ * @param uCRC32 Current CRC-32 intermediate value.
+ * @param pv The data block to process.
+ * @param cb The size of the data block in bytes.
+ */
+RTDECL(uint32_t) RTCrc32Process(uint32_t uCRC32, const void *pv, size_t cb);
+
+/**
+ * Complete a multiblock CRC-32 calculation.
+ *
+ * @returns CRC-32 value.
+ * @param uCRC32 Current CRC-32 intermediate value.
+ */
+RTDECL(uint32_t) RTCrc32Finish(uint32_t uCRC32);
+/** @} */
+
+
+/** @defgroup grp_rt_crc64 CRC-64 Calculation
+ * @{ */
+/**
+ * Calculate CRC-64 for a memory block.
+ *
+ * @returns CRC-64 for the memory block.
+ * @param pv Pointer to the memory block.
+ * @param cb Size of the memory block in bytes.
+ */
+RTDECL(uint64_t) RTCrc64(const void *pv, size_t cb);
+
+/**
+ * Start a multiblock CRC-64 calculation.
+ *
+ * @returns Start CRC-64.
+ */
+RTDECL(uint64_t) RTCrc64Start(void);
+
+/**
+ * Processes a multiblock of a CRC-64 calculation.
+ *
+ * @returns Intermediate CRC-64 value.
+ * @param uCRC64 Current CRC-64 intermediate value.
+ * @param pv The data block to process.
+ * @param cb The size of the data block in bytes.
+ */
+RTDECL(uint64_t) RTCrc64Process(uint64_t uCRC64, const void *pv, size_t cb);
+
+/**
+ * Complete a multiblock CRC-64 calculation.
+ *
+ * @returns CRC-64 value.
+ * @param uCRC64 Current CRC-64 intermediate value.
+ */
+RTDECL(uint64_t) RTCrc64Finish(uint64_t uCRC64);
+/** @} */
+
+
+/** @defgroup grp_rt_crc_adler32 Adler-32
+ * @{ */
+/**
+ * Calculate Adler-32 for a memory block.
+ *
+ * @returns Adler-32 for the memory block.
+ * @param pv Pointer to the memory block.
+ * @param cb Size of the memory block in bytes.
+ */
+RTDECL(uint32_t) RTCrcAdler32(void const *pv, size_t cb);
+
+/**
+ * Start a multiblock Adler-32 calculation.
+ *
+ * @returns Start Adler-32.
+ */
+RTDECL(uint32_t) RTCrcAdler32Start(void);
+
+/**
+ * Processes a multiblock of a Adler-32 calculation.
+ *
+ * @returns Intermediate Adler-32 value.
+ * @param uCrc Current Adler-32 intermediate value.
+ * @param pv The data block to process.
+ * @param cb The size of the data block in bytes.
+ */
+RTDECL(uint32_t) RTCrcAdler32Process(uint32_t uCrc, void const *pv, size_t cb);
+
+/**
+ * Complete a multiblock Adler-32 calculation.
+ *
+ * @returns Adler-32 value.
+ * @param uCrc Current Adler-32 intermediate value.
+ */
+RTDECL(uint32_t) RTCrcAdler32Finish(uint32_t uCrc);
+
+/** @} */
+
+
+/** @defgroup grp_rt_crc32c CRC-32C
+ * @{ */
+/**
+ * Calculate CRC-32C for a memory block.
+ *
+ * @returns CRC-32C for the memory block.
+ * @param pv Pointer to the memory block.
+ * @param cb Size of the memory block in bytes.
+ */
+RTDECL(uint32_t) RTCrc32C(const void *pv, size_t cb);
+
+/**
+ * Start a multiblock CRC-32 calculation.
+ *
+ * @returns Start CRC-32.
+ */
+RTDECL(uint32_t) RTCrc32CStart(void);
+
+/**
+ * Processes a multiblock of a CRC-32C calculation.
+ *
+ * @returns Intermediate CRC-32C value.
+ * @param uCRC32C Current CRC-32C intermediate value.
+ * @param pv The data block to process.
+ * @param cb The size of the data block in bytes.
+ */
+RTDECL(uint32_t) RTCrc32CProcess(uint32_t uCRC32C, const void *pv, size_t cb);
+
+/**
+ * Complete a multiblock CRC-32 calculation.
+ *
+ * @returns CRC-32 value.
+ * @param uCRC32 Current CRC-32 intermediate value.
+ */
+RTDECL(uint32_t) RTCrc32CFinish(uint32_t uCRC32);
+
+/** @} */
+
+
+/** @defgroup grp_rt_crc16ccitt CRC-16-CCITT
+ * @{ */
+/**
+ * Calculate CRC-16-CCITT for a memory block.
+ *
+ * @returns CRC-16-CCITT for the memory block.
+ * @param pv Pointer to the memory block.
+ * @param cb Size of the memory block in bytes.
+ */
+RTDECL(uint16_t) RTCrc16Ccitt(const void *pv, size_t cb);
+
+/**
+ * Start a multiblock CRC-16-CCITT calculation.
+ *
+ * @returns Start CRC-16-CCITT.
+ */
+RTDECL(uint16_t) RTCrc16CcittStart(void);
+
+/**
+ * Processes a multiblock of a CRC-16-CCITT calculation.
+ *
+ * @returns Intermediate CRC-16-CCITT value.
+ * @param uCrc Current CRC-16-CCITT intermediate value.
+ * @param pv The data block to process.
+ * @param cb The size of the data block in bytes.
+ */
+RTDECL(uint16_t) RTCrc16CcittProcess(uint16_t uCrc, const void *pv, size_t cb);
+
+/**
+ * Complete a multiblock CRC-16-CCITT calculation.
+ *
+ * @returns CRC-16-CCITT value.
+ * @param uCrc Current CRC-16-CCITT intermediate value.
+ */
+RTDECL(uint16_t) RTCrc16CcittFinish(uint16_t uCrc);
+/** @} */
+
+/** @} */
+
+RT_C_DECLS_END
+
+#endif /* !IPRT_INCLUDED_crc_h */
+