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/*
* ANSI X9.19 MAC
* (C) 1999-2007 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/
#ifndef BOTAN_ANSI_X919_MAC_H_
#define BOTAN_ANSI_X919_MAC_H_
#include <botan/mac.h>
#include <botan/block_cipher.h>
BOTAN_FUTURE_INTERNAL_HEADER(x919_mac.h)
namespace Botan {
/**
* DES/3DES-based MAC from ANSI X9.19
*/
class BOTAN_PUBLIC_API(2,0) ANSI_X919_MAC final : public MessageAuthenticationCode
{
public:
void clear() override;
std::string name() const override;
size_t output_length() const override { return 8; }
MessageAuthenticationCode* clone() const override;
Key_Length_Specification key_spec() const override
{
return Key_Length_Specification(8, 16, 8);
}
ANSI_X919_MAC();
ANSI_X919_MAC(const ANSI_X919_MAC&) = delete;
ANSI_X919_MAC& operator=(const ANSI_X919_MAC&) = delete;
private:
void add_data(const uint8_t[], size_t) override;
void final_result(uint8_t[]) override;
void key_schedule(const uint8_t[], size_t) override;
std::unique_ptr<BlockCipher> m_des1, m_des2;
secure_vector<uint8_t> m_state;
size_t m_position;
};
}
#endif
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