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)
/// \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;
};
/// \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
FixedKeyLength
Inherited by keyed algorithms with fixed key length.
Definition seckey.h:125
FixedSizeSecBlock
Fixed size stack-based SecBlock.
Definition secblock.h:1246
IteratedHash
Iterated hash base class.
Definition iterhash.h:127
MessageAuthenticationCodeFinal< TTMAC_Base >::MessageAuthenticationCodeFinal
MessageAuthenticationCodeFinal()
Definition seckey.h:375
MessageAuthenticationCode
Interface for message authentication codes.
Definition cryptlib.h:1304
NameValuePairs
Interface for retrieving values given their names.
Definition cryptlib.h:327
TTMAC_Base
TTMAC message authentication code information.
Definition ttmac.h:17
TTMAC_Base::DigestSize
unsigned int DigestSize() const
Provides the digest size of the hash.
Definition ttmac.h:22
TTMAC
Two-Track-MAC message authentication code.
Definition ttmac.h:40
word32
unsigned int word32
32-bit unsigned datatype
Definition config_int.h:72
LittleEndian
EnumToType< ByteOrder, LITTLE_ENDIAN_ORDER > LittleEndian
Provides a constant for LittleEndian.
Definition cryptlib.h:155
iterhash.h
Base classes for iterated hashes.
CryptoPP
Crypto++ library namespace.
secblock.h
Classes and functions for secure memory allocations.
seckey.h
Classes and functions for implementing secret key algorithms.