103 lines
2.4 KiB
C
103 lines
2.4 KiB
C
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///////////////////////////////////////////////////////////////////////////////
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//
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/// \file check.h
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/// \brief Prototypes for different check functions
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//
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// This code has been put into the public domain.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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//
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///////////////////////////////////////////////////////////////////////////////
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#ifndef LZMA_CHECK_H
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#define LZMA_CHECK_H
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#include "common.h"
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typedef struct {
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/// Internal state
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uint32_t state[8];
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/// Temporary 8-byte aligned buffer to hold incomplete chunk.
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/// After lzma_check_finish(), the first 32 bytes will contain
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/// the final digest in big endian byte order.
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uint8_t buffer[64];
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/// Size of the message excluding padding
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uint64_t size;
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} lzma_sha256;
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/// \note This is not in the public API because this structure will
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/// change in future.
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typedef union {
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uint32_t crc32;
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uint64_t crc64;
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lzma_sha256 sha256;
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} lzma_check;
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#ifdef HAVE_SMALL
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extern uint32_t lzma_crc32_table[8][256];
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extern uint64_t lzma_crc64_table[4][256];
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#else
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extern const uint32_t lzma_crc32_table[8][256];
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extern const uint64_t lzma_crc64_table[4][256];
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#endif
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// Generic
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/// \brief Initializes *check depending on type
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///
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/// \return LZMA_OK on success. LZMA_UNSUPPORTED_CHECK if the type is not
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/// supported by the current version or build of liblzma.
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/// LZMA_PROG_ERROR if type > LZMA_CHECK_ID_MAX.
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///
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extern lzma_ret lzma_check_init(lzma_check *check, lzma_check_type type);
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/// \brief Updates *check
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///
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extern void lzma_check_update(lzma_check *check, lzma_check_type type,
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const uint8_t *buf, size_t size);
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/// \brief Finishes *check
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///
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extern void lzma_check_finish(lzma_check *check, lzma_check_type type);
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/*
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/// \brief Compare two checks
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///
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/// \return false if the checks are identical; true if they differ.
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///
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extern bool lzma_check_compare(
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lzma_check *check1, lzma_check *check2, lzma_check_type type);
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*/
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// CRC32
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extern void lzma_crc32_init(void);
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// CRC64
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extern void lzma_crc64_init(void);
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// SHA256
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extern void lzma_sha256_init(lzma_sha256 *sha256);
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extern void lzma_sha256_update(
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const uint8_t *buf, size_t size, lzma_sha256 *sha256);
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extern void lzma_sha256_finish(lzma_sha256 *sha256);
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#endif
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