ttmac.h
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// ttmac.h - written and placed in the public domain by Kevin Springle
//! \file ttmac.h
//! \brief Classes for the TTMAC message authentication code
#ifndef CRYPTOPP_TTMAC_H
#define CRYPTOPP_TTMAC_H
#include "seckey.h"
#include "iterhash.h"
#include "secblock.h"
NAMESPACE_BEGIN(CryptoPP)
//! \class TTMAC_Base
//! \brief TTMAC message authentication code information
class CRYPTOPP_NO_VTABLE TTMAC_Base : public FixedKeyLength<20>, public IteratedHash<word32, LittleEndian, 64, MessageAuthenticationCode>
{
public:
static std::string StaticAlgorithmName() {return std::string("Two-Track-MAC");}
CRYPTOPP_CONSTANT(DIGESTSIZE=20)
unsigned int DigestSize() const {return DIGESTSIZE;};
void UncheckedSetKey(const byte *userKey, unsigned int keylength, const NameValuePairs &params);
void TruncatedFinal(byte *mac, size_t size);
protected:
static void Transform (word32 *digest, const word32 *X, bool last);
void HashEndianCorrectedBlock(const word32 *data) {Transform(m_digest, data, false);}
void Init();
word32* StateBuf() {return m_digest;}
FixedSizeSecBlock<word32, 10> m_digest;
FixedSizeSecBlock<word32, 5> m_key;
};
//! \class TTMAC
//! \brief Two-Track-MAC message authentication code
//! \tparam T HashTransformation class
//! \details 160-bit MAC with 160-bit key
//! \sa MessageAuthenticationCode(), <a href="http://www.weidai.com/scan-mirror/mac.html#TTMAC">Two-Track-MAC</a>
DOCUMENTED_TYPEDEF(MessageAuthenticationCodeFinal<TTMAC_Base>, TTMAC)
NAMESPACE_END
#endif
EnumToType
Converts a typename to an enumerated value.
Definition: cryptlib.h:115
secblock.h
Classes and functions for secure memory allocations.
FixedKeyLength
Inherited by keyed algorithms with fixed key length.
Definition: seckey.h:128
TTMAC
Two-Track-MAC message authentication code.
Definition: ttmac.h:42
seckey.h
Classes and functions for implementing secret key algorithms.
FixedSizeSecBlock< word32, 10 >
TTMAC_Base
TTMAC message authentication code information.
Definition: ttmac.h:17
CryptoPP
Crypto++ library namespace.
MessageAuthenticationCode
Interface for message authentication codes.
Definition: cryptlib.h:1107
MessageAuthenticationCodeFinal< TTMAC_Base >
NameValuePairs
Interface for retrieving values given their names.
Definition: cryptlib.h:277
IteratedHash
_
Definition: iterhash.h:55