diff options
Diffstat (limited to 'plugins/CryptoPP/crypto/src/vmac.h')
| -rw-r--r-- | plugins/CryptoPP/crypto/src/vmac.h | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/plugins/CryptoPP/crypto/src/vmac.h b/plugins/CryptoPP/crypto/src/vmac.h new file mode 100644 index 0000000000..a2c85ace03 --- /dev/null +++ b/plugins/CryptoPP/crypto/src/vmac.h @@ -0,0 +1,77 @@ +#ifndef CRYPTOPP_VMAC_H
+#define CRYPTOPP_VMAC_H
+
+#include "iterhash.h"
+#include "seckey.h"
+
+NAMESPACE_BEGIN(CryptoPP)
+
+#define CRYPTOPP_BLOCK_1(n, t, s) t* m_##n() {return (t *)(m_aggregate+0);} size_t SS1() {return sizeof(t)*(s);} size_t m_##n##Size() {return (s);}
+#define CRYPTOPP_BLOCK_2(n, t, s) t* m_##n() {return (t *)(m_aggregate+SS1());} size_t SS2() {return SS1()+sizeof(t)*(s);} size_t m_##n##Size() {return (s);}
+#define CRYPTOPP_BLOCK_3(n, t, s) t* m_##n() {return (t *)(m_aggregate+SS2());} size_t SS3() {return SS2()+sizeof(t)*(s);} size_t m_##n##Size() {return (s);}
+#define CRYPTOPP_BLOCK_4(n, t, s) t* m_##n() {return (t *)(m_aggregate+SS3());} size_t SS4() {return SS3()+sizeof(t)*(s);} size_t m_##n##Size() {return (s);}
+#define CRYPTOPP_BLOCK_5(n, t, s) t* m_##n() {return (t *)(m_aggregate+SS4());} size_t SS5() {return SS4()+sizeof(t)*(s);} size_t m_##n##Size() {return (s);}
+#define CRYPTOPP_BLOCK_6(n, t, s) t* m_##n() {return (t *)(m_aggregate+SS5());} size_t SS6() {return SS5()+sizeof(t)*(s);} size_t m_##n##Size() {return (s);}
+#define CRYPTOPP_BLOCK_7(n, t, s) t* m_##n() {return (t *)(m_aggregate+SS6());} size_t SS7() {return SS6()+sizeof(t)*(s);} size_t m_##n##Size() {return (s);}
+#define CRYPTOPP_BLOCK_8(n, t, s) t* m_##n() {return (t *)(m_aggregate+SS7());} size_t SS8() {return SS7()+sizeof(t)*(s);} size_t m_##n##Size() {return (s);}
+#define CRYPTOPP_BLOCKS_END(i) size_t SST() {return SS##i();} void AllocateBlocks() {m_aggregate.New(SST());} AlignedSecByteBlock m_aggregate;
+
+/// .
+class VMAC_Base : public IteratedHashBase<word64, MessageAuthenticationCode>
+{
+public:
+ std::string AlgorithmName() const {return std::string("VMAC(") + GetCipher().AlgorithmName() + ")-" + IntToString(DigestSize()*8);}
+ unsigned int IVSize() const {return GetCipher().BlockSize();}
+ void Resynchronize(const byte *IV);
+ void GetNextIV(RandomNumberGenerator &rng, byte *IV);
+ unsigned int DigestSize() const {return m_is128 ? 16 : 8;};
+ void UncheckedSetKey(const byte *userKey, unsigned int keylength, const NameValuePairs ¶ms);
+ void TruncatedFinal(byte *mac, size_t size);
+ unsigned int BlockSize() const {return m_L1KeyLength;}
+ ByteOrder GetByteOrder() const {return LITTLE_ENDIAN_ORDER;}
+
+protected:
+ virtual BlockCipher & AccessCipher() =0;
+ virtual int DefaultDigestSize() const =0;
+ const BlockCipher & GetCipher() const {return const_cast<VMAC_Base *>(this)->AccessCipher();}
+ void HashEndianCorrectedBlock(const word64 *data);
+ size_t HashMultipleBlocks(const word64 *input, size_t length);
+ void Init() {}
+ word64* StateBuf() {return NULL;}
+ word64* DataBuf() {return (word64 *)m_data();}
+
+ void VHASH_Update_SSE2(const word64 *data, size_t blocksRemainingInWord64, int tagPart);
+#if !(defined(_MSC_VER) && _MSC_VER < 1300) // can't use function template here with VC6
+ template <bool T_128BitTag>
+#endif
+ void VHASH_Update_Template(const word64 *data, size_t blockRemainingInWord128);
+ void VHASH_Update(const word64 *data, size_t blocksRemainingInWord128);
+
+ CRYPTOPP_BLOCK_1(polyState, word64, 4*(m_is128+1))
+ CRYPTOPP_BLOCK_2(nhKey, word64, m_L1KeyLength/sizeof(word64) + 2*m_is128)
+ CRYPTOPP_BLOCK_3(data, byte, m_L1KeyLength)
+ CRYPTOPP_BLOCK_4(l3Key, word64, 2*(m_is128+1))
+ CRYPTOPP_BLOCK_5(nonce, byte, IVSize())
+ CRYPTOPP_BLOCK_6(pad, byte, IVSize())
+ CRYPTOPP_BLOCKS_END(6)
+
+ bool m_is128, m_padCached, m_isFirstBlock;
+ int m_L1KeyLength;
+};
+
+/// <a href="http://www.cryptolounge.org/wiki/VMAC">VMAC</a>
+template <class T_BlockCipher, int T_DigestBitSize = 128>
+class VMAC : public SimpleKeyingInterfaceImpl<VMAC_Base, SameKeyLengthAs<T_BlockCipher, SimpleKeyingInterface::UNIQUE_IV, T_BlockCipher::BLOCKSIZE> >
+{
+public:
+ static std::string StaticAlgorithmName() {return std::string("VMAC(") + T_BlockCipher::StaticAlgorithmName() + ")-" + IntToString(T_DigestBitSize);}
+
+private:
+ BlockCipher & AccessCipher() {return m_cipher;}
+ int DefaultDigestSize() const {return T_DigestBitSize/8;}
+ typename T_BlockCipher::Encryption m_cipher;
+};
+
+NAMESPACE_END
+
+#endif
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