sha1.h

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#ifndef _SHA1_H
#define _SHA1_H
 
#ifdef  __cplusplus
extern "C" {
#endif
 
#define SHA1_BLOCK_LENGTH               64
#define SHA1_DIGEST_LENGTH              20
#define SHA1_DIGEST_STRING_LENGTH       (SHA1_DIGEST_LENGTH * 2 + 1)
 
typedef struct {
    uint32_t state[5];
    uint64_t count;
    uint8_t buffer[SHA1_BLOCK_LENGTH];
} SHA1_CTX;
 
void SHA1Init(SHA1_CTX *);
void SHA1Pad(SHA1_CTX *);
void SHA1Transform(uint32_t [5], const uint8_t [SHA1_BLOCK_LENGTH]);
void SHA1Update(SHA1_CTX *, const uint8_t *, size_t);
void SHA1Final(uint8_t [SHA1_DIGEST_LENGTH], SHA1_CTX *);
 
#ifdef  __cplusplus
}
#endif
 
#endif /* _SHA1_H */