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#ifndef __SHA1_H__
#define __SHA1_H__
#include <stdint.h>
#define SHA1_HASH_LENGTH 20
#define SHA1_BLOCK_LENGTH 64
union _buffer {
uint8_t b[SHA1_BLOCK_LENGTH];
uint32_t w[SHA1_BLOCK_LENGTH/4];
};
union _state {
uint8_t b[SHA1_HASH_LENGTH];
uint32_t w[SHA1_HASH_LENGTH/4];
};
typedef struct sha1nfo {
union _buffer buffer;
uint8_t bufferOffset;
union _state state;
uint32_t byteCount;
uint8_t keyBuffer[SHA1_BLOCK_LENGTH];
uint8_t innerHash[SHA1_HASH_LENGTH];
} sha1nfo;
/**
*/
void sha1_init(sha1nfo *s);
/**
*/
void sha1_writebyte(sha1nfo *s, uint8_t data);
/**
*/
void sha1_write(sha1nfo *s, const uint8_t *data, size_t len);
/**
*/
uint8_t* sha1_result(sha1nfo *s);
#ifdef SHA1_USE_HMAC
/**
*/
void sha1_initHmac(sha1nfo *s, const uint8_t* key, int keyLength);
/**
*/
uint8_t* sha1_resultHmac(sha1nfo *s);
#endif
#endif // !defined __SHA1_H__
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