Sha1.hpp

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#ifndef IV_SRC_CRYPTO_SHA1_HPP_
#define IV_SRC_CRYPTO_SHA1_HPP_
 
#include <cstdint>
#include <vector>
 
//https://github.com/CommanderBubble/sha1/blob/master/src/sha1.cpp extraído de aquí
constexpr unsigned int SHA1_SIZE = (5 * sizeof(unsigned int)); /* 20 */
constexpr unsigned int BLOCK_SIZE = 64;
 
class Sha1 final
{
public:
    Sha1();
 
    std::vector<std::byte> digest(void *input, uint32_t input_length);
 
private:
    void initialise();
 
    void process_block(const unsigned char *block);
 
    unsigned int H0;
    unsigned int H1;
    unsigned int H2;
    unsigned int H3;
    unsigned int H4;
 
    unsigned char stored[BLOCK_SIZE * 2];
    unsigned int stored_size;
    unsigned int message_length[2];
 
    unsigned char signature[SHA1_SIZE];
 
    bool finished;
    void process(void *input, uint32_t length);
    void finish(void *signature_);
};
 
#endif//IV_SRC_CRYPTO_SHA1_HPP_