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/*
* CBC-MAC
* (C) 1999-2007 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/
#ifndef BOTAN_CBC_MAC_H__
#define BOTAN_CBC_MAC_H__
#include <botan/mac.h>
#include <botan/block_cipher.h>
namespace Botan {
/**
* CBC-MAC
*/
class BOTAN_DLL CBC_MAC final : public MessageAuthenticationCode
{
public:
std::string name() const override;
MessageAuthenticationCode* clone() const override;
size_t output_length() const override { return m_cipher->block_size(); }
void clear() override;
Key_Length_Specification key_spec() const override
{
return m_cipher->key_spec();
}
/**
* @param cipher the block cipher to use
*/
explicit CBC_MAC(BlockCipher* cipher);
static CBC_MAC* make(const Spec& spec);
private:
void add_data(const byte[], size_t) override;
void final_result(byte[]) override;
void key_schedule(const byte[], size_t) override;
std::unique_ptr<BlockCipher> m_cipher;
secure_vector<byte> m_state;
size_t m_position = 0;
};
}
#endif
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