mirror of
https://github.com/nillerusr/source-engine.git
synced 2024-12-23 14:46:53 +00:00
39 lines
1.1 KiB
C
39 lines
1.1 KiB
C
|
// ttmac.h - written and placed in the public domain by Kevin Springle
|
||
|
|
||
|
#ifndef CRYPTOPP_TTMAC_H
|
||
|
#define CRYPTOPP_TTMAC_H
|
||
|
|
||
|
#include "seckey.h"
|
||
|
#include "iterhash.h"
|
||
|
|
||
|
NAMESPACE_BEGIN(CryptoPP)
|
||
|
|
||
|
//! _
|
||
|
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 ¶ms);
|
||
|
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;
|
||
|
};
|
||
|
|
||
|
//! <a href="http://www.weidai.com/scan-mirror/mac.html#TTMAC">Two-Track-MAC</a>
|
||
|
/*! 160 Bit MAC with 160 Bit Key */
|
||
|
DOCUMENTED_TYPEDEF(MessageAuthenticationCodeFinal<TTMAC_Base>, TTMAC)
|
||
|
|
||
|
NAMESPACE_END
|
||
|
|
||
|
#endif
|