SHA256.h

#pragma once


#include <libutl/Object.h>


UTL_NS_BEGIN;


class SHA256sum;

// SHA256 //////////////////////////////////////////////////////////////////////////////////////////


class SHA256 : public Object
{
    UTL_CLASS_DECL(SHA256, Object);
    UTL_CLASS_NO_COMPARE;
    UTL_CLASS_NO_COPY;
    UTL_CLASS_NO_SERIALIZE;

public:
    void clear();

    void process(const byte_t* data, size_t dataLen);

    void finalize(SHA256sum& sum);

private:
    void
    init()
    {
        clear();
    }
    void
    deInit()
    {
    }
    void transform(const byte_t* data, size_t numBlocks = 1);

private:
    byte_t _data[64];
    byte_t* _dataPtr;
    byte_t* _dataLim;
    uint64_t _bitLen;
    uint32_t _h[8];
    static uint32_t k[64];
};

// SHA256sum ///////////////////////////////////////////////////////////////////////////////////////


class SHA256sum : public Object
{
    UTL_CLASS_DECL(SHA256sum, Object);
    UTL_CLASS_DEFID;

public:
    virtual int compare(const Object& rhs) const;

    virtual void copy(const Object& rhs);

    virtual size_t hash(size_t size) const;

    virtual void serialize(Stream& stream, uint_t io, uint_t mode);

    void set(const uint32_t* hash);

    void set(const String& str);

    virtual String toString() const;

private:
    uint32_t _h[8];
};


UTL_NS_END;