MD5.h

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#ifndef IMT_BASE_CORE_UTIL_MD5_H
#define IMT_BASE_CORE_UTIL_MD5_H
 
#include <array>
#include <Imt.Base.Core.Platform/Nonmovable.h>
#include <Imt.Base.Core.Platform/Platform.h>
 
namespace imt {
namespace base {
namespace core {
namespace util {
 
class MD5 final : private ::imt::base::core::platform::Nonmovable {
 
public:
 
    static constexpr uint32_t MD5_HASH_SIZE {16U};
 
    MD5();
 
    // AXIVION Next Codeline AutosarC++19_03-A8.4.7: Pass by value not possible for byte array.
    // AXIVION Next Codeline AutosarC++19_03-A18.1.1: use C-style array for compatibility
    void update(uint8_t const pData[], uint32_t const dataSize);
 
    // AXIVION Next Codeline AutosarC++19_03-A8.4.7: Pass by value not possible for byte array.
    // AXIVION Next Codeline AutosarC++19_03-A18.1.1: use C-style array for compatibility
    void finalize(uint8_t digest[MD5_HASH_SIZE]);
 
    // AXIVION Next Codeline AutosarC++19_03-A8.4.7: Pass by value not possible for byte array.
    // AXIVION Next Codeline AutosarC++19_03-A18.1.1: use C-style array for compatibility
    static bool areEqual(uint8_t const expected[MD5_HASH_SIZE], uint8_t const current[MD5_HASH_SIZE]);
 
    // AXIVION Next Codeline AutosarC++19_03-A18.1.1: use C-style array for compatibility
    static void resetMd5Hash(uint8_t md5Hash[MD5_HASH_SIZE]);
 
    static constexpr size_t STATE_SIZE {4};
    static constexpr size_t COUNT_SIZE {2};
    static constexpr size_t BUFFER_SIZE {64};
 
private:
 
    // resets the internal state
    void reset();
 
    // state (ABCD)
    std::array<uint32_t, STATE_SIZE> m_state;
    // number of bits, modulo 2^64 (lsb first)
    std::array<uint32_t, COUNT_SIZE> m_count;
    // input buffer
    std::array<uint8_t, BUFFER_SIZE> m_buffer;
};
 
} // namespace util
} // namespace core
} // namespace base
} // namespace imt
 
#endif // IMT_BASE_CORE_UTIL_MD5_H