crc32.h

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#ifndef __CRC32_H__
#define __CRC32_H__
 
#include <wireshark.h>
 
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
 
#define CRC32_CCITT_SEED 0xFFFFFFFF
#define CRC32C_PRELOAD   0xffffffff
#define CRC32_MPEG2_SEED 0xFFFFFFFF
 
/*
 * Byte swap fix contributed by Dave Wysochanski <[email protected]>.
 */
#define CRC32C_SWAP(crc32c_value)               \
    (((crc32c_value & 0xff000000) >> 24)    |   \
     ((crc32c_value & 0x00ff0000) >>  8)    |   \
     ((crc32c_value & 0x0000ff00) <<  8)    |   \
     ((crc32c_value & 0x000000ff) << 24))
 
WS_DLL_PUBLIC uint32_t crc32_ccitt_table_lookup (unsigned char pos);
 
WS_DLL_PUBLIC uint32_t crc32c_table_lookup (unsigned char pos);
 
WS_DLL_PUBLIC uint32_t crc32c_calculate(const void *buf, int len, uint32_t crc);
 
WS_DLL_PUBLIC uint32_t crc32c_calculate_no_swap(const void *buf, int len, uint32_t crc);
 
WS_DLL_PUBLIC uint32_t crc32_ccitt(const uint8_t *buf, unsigned len);
 
WS_DLL_PUBLIC uint32_t crc32_ccitt_seed(const uint8_t *buf, unsigned len, uint32_t seed);
 
WS_DLL_PUBLIC uint32_t crc32_mpeg2_seed(const uint8_t *buf, unsigned len, uint32_t seed);
 
WS_DLL_PUBLIC uint32_t crc32_0x0AA725CF_seed(const uint8_t *buf, unsigned len, uint32_t seed);
 
WS_DLL_PUBLIC uint32_t crc32_0x5D6DCB_seed(const uint8_t *buf, unsigned len, uint32_t seed);
 
WS_DLL_PUBLIC int Dot11DecryptWepDecrypt(
    const unsigned char *seed,
    const size_t seed_len,
    unsigned char *cypher_text,
    const size_t data_len);
 
#ifdef __cplusplus
}
#endif /* __cplusplus */
 
#endif /* crc32.h */