You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
39 lines
1.2 KiB
39 lines
1.2 KiB
// 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" |
|
#include "secblock.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
|
|
|