From 5d018dc03549c1ee4958364712fb0c94e1bf2741 Mon Sep 17 00:00:00 2001 From: Lasse Collin Date: Sun, 9 Dec 2007 00:42:33 +0200 Subject: Imported to git. --- src/liblzma/check/check.h | 102 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 102 insertions(+) create mode 100644 src/liblzma/check/check.h (limited to 'src/liblzma/check/check.h') diff --git a/src/liblzma/check/check.h b/src/liblzma/check/check.h new file mode 100644 index 00000000..74279ceb --- /dev/null +++ b/src/liblzma/check/check.h @@ -0,0 +1,102 @@ +/////////////////////////////////////////////////////////////////////////////// +// +/// \file check.h +/// \brief Prototypes for different check functions +// +// This code has been put into the public domain. +// +// This library 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. +// +/////////////////////////////////////////////////////////////////////////////// + +#ifndef LZMA_CHECK_H +#define LZMA_CHECK_H + +#include "common.h" + + +typedef struct { + /// Internal state + uint32_t state[8]; + + /// Temporary 8-byte aligned buffer to hold incomplete chunk. + /// After lzma_check_finish(), the first 32 bytes will contain + /// the final digest in big endian byte order. + uint8_t buffer[64]; + + /// Size of the message excluding padding + uint64_t size; + +} lzma_sha256; + + +/// \note This is not in the public API because this structure will +/// change in future. +typedef union { + uint32_t crc32; + uint64_t crc64; + lzma_sha256 sha256; +} lzma_check; + + +#ifdef HAVE_SMALL +extern uint32_t lzma_crc32_table[8][256]; +extern uint64_t lzma_crc64_table[4][256]; +#else +extern const uint32_t lzma_crc32_table[8][256]; +extern const uint64_t lzma_crc64_table[4][256]; +#endif + +// Generic + +/// \brief Initializes *check depending on type +/// +/// \return LZMA_OK on success. LZMA_UNSUPPORTED_CHECK if the type is not +/// supported by the current version or build of liblzma. +/// LZMA_PROG_ERROR if type > LZMA_CHECK_ID_MAX. +/// +extern lzma_ret lzma_check_init(lzma_check *check, lzma_check_type type); + +/// \brief Updates *check +/// +extern void lzma_check_update(lzma_check *check, lzma_check_type type, + const uint8_t *buf, size_t size); + +/// \brief Finishes *check +/// +extern void lzma_check_finish(lzma_check *check, lzma_check_type type); + + +/* +/// \brief Compare two checks +/// +/// \return false if the checks are identical; true if they differ. +/// +extern bool lzma_check_compare( + lzma_check *check1, lzma_check *check2, lzma_check_type type); +*/ + + +// CRC32 + +extern void lzma_crc32_init(void); + + +// CRC64 + +extern void lzma_crc64_init(void); + + +// SHA256 + +extern void lzma_sha256_init(lzma_sha256 *sha256); + +extern void lzma_sha256_update( + const uint8_t *buf, size_t size, lzma_sha256 *sha256); + +extern void lzma_sha256_finish(lzma_sha256 *sha256); + + +#endif -- cgit v1.2.3