/** @file * IPRT - CRCs and Checksums. */ /* * Copyright (C) 2006-2022 Oracle and/or its affiliates. * * This file is part of VirtualBox base platform packages, as * available from https://www.virtualbox.org. * * 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, in version 3 of the * License. * * 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, see . * * The contents of this file may alternatively be used under the terms * of the Common Development and Distribution License Version 1.0 * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included * in the VirtualBox 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. * * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0 */ #ifndef IPRT_INCLUDED_crc_h #define IPRT_INCLUDED_crc_h #ifndef RT_WITHOUT_PRAGMA_ONCE # pragma once #endif #include #include 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 */