#ifndef __SHA1_H__
#define __SHA1_H__

typedef struct {
    unsigned long state[5];
    unsigned long count[2];
    unsigned char buffer[64];
} SHA1_CTX;

void SHA1Init(SHA1_CTX* context);
void SHA1Update(SHA1_CTX* context, unsigned char* data, unsigned int len);
void SHA1Final(unsigned char digest[20], SHA1_CTX* context);

#endif