#ifndef SHA1_H
#define SHA1_H

#include <cstdint>
#include <vector>

class SHA1 {
public:
    static const size_t HASH_SIZE = 20;
    static const size_t BLOCK_SIZE = 64;

    SHA1();
    void update(const uint8_t* data, size_t length);
    void finalize(uint8_t* hash);

private:
    void transform(const uint8_t* block);
    uint32_t state[5];
    uint8_t buffer[64];
    uint64_t count;
};

#endif // SHA1_H