00001 #ifndef CRYPTOPP_PANAMA_H
00002 #define CRYPTOPP_PANAMA_H
00003
00004 #include "seckey.h"
00005 #include "secblock.h"
00006 #include "iterhash.h"
00007 #include "strciphr.h"
00008
00009 NAMESPACE_BEGIN(CryptoPP)
00010
00011
00012 template <class B>
00013 class Panama
00014 {
00015 public:
00016 void Reset();
00017 void Iterate(unsigned int count, const word32 *p=NULL, word32 *z=NULL, const word32 *y=NULL);
00018
00019 protected:
00020 typedef word32 Stage[8];
00021 enum {STAGES = 32};
00022
00023 FixedSizeSecBlock<word32, 17*2 + STAGES*sizeof(Stage)> m_state;
00024 unsigned int m_bstart;
00025 };
00026
00027
00028 template <class B = LittleEndian>
00029 class PanamaHash : protected Panama<B>, public IteratedHash<word32, NativeByteOrder, 32>
00030 {
00031 public:
00032 enum {DIGESTSIZE = 32};
00033 PanamaHash() : IteratedHash<word32, NativeByteOrder, 32>(0) {Panama<B>::Reset();}
00034 unsigned int DigestSize() const {return DIGESTSIZE;}
00035 void TruncatedFinal(byte *hash, unsigned int size);
00036
00037 protected:
00038 void Init() {Panama<B>::Reset();}
00039 void vTransform(const word32 *data) {Iterate(1, data);}
00040 unsigned int HashMultipleBlocks(const word32 *input, unsigned int length);
00041 };
00042
00043
00044 template <class B = LittleEndian>
00045 class PanamaMAC_Base : public PanamaHash<B>, public VariableKeyLength<32, 0, UINT_MAX>, public MessageAuthenticationCode
00046 {
00047 public:
00048 void UncheckedSetKey(const byte *userKey, unsigned int keylength)
00049 {
00050 m_key.Assign(userKey, keylength);
00051 Restart();
00052 }
00053
00054 static const char * StaticAlgorithmName() {return B::ToEnum() == BIG_ENDIAN ? "Panama-BE" : "Panama-LE";}
00055
00056 protected:
00057 void Init()
00058 {
00059 PanamaHash<B>::Init();
00060 Update(m_key, m_key.size());
00061 }
00062
00063 SecByteBlock m_key;
00064 };
00065
00066
00067 template <class B = LittleEndian>
00068 class PanamaMAC : public MessageAuthenticationCodeTemplate<PanamaMAC_Base<B> >
00069 {
00070 public:
00071 PanamaMAC() {}
00072 PanamaMAC(const byte *key, unsigned int length=PanamaMAC_Base<B>::DEFAULT_KEYLENGTH)
00073 {SetKey(key, length);}
00074 };
00075
00076
00077 template <class B>
00078 struct PanamaCipherInfo : public VariableKeyLength<32, 32, 64, 32, SimpleKeyingInterface::NOT_RESYNCHRONIZABLE>
00079 {
00080 static const char * StaticAlgorithmName() {return B::ToEnum() == BIG_ENDIAN_ORDER ? "Panama-BE" : "Panama-LE";}
00081 };
00082
00083
00084 template <class B>
00085 class PanamaCipherPolicy : public AdditiveCipherConcretePolicy<word32, 32>,
00086 public PanamaCipherInfo<B>,
00087 protected Panama<B>
00088 {
00089 protected:
00090 void CipherSetKey(const NameValuePairs ¶ms, const byte *key, unsigned int length);
00091 void OperateKeystream(KeystreamOperation operation, byte *output, const byte *input, unsigned int iterationCount);
00092 bool IsRandomAccess() const {return false;}
00093 };
00094
00095
00096 template <class B = LittleEndian>
00097 struct PanamaCipher : public PanamaCipherInfo<B>, public SymmetricCipherDocumentation
00098 {
00099 typedef SymmetricCipherFinalTemplate<ConcretePolicyHolder<PanamaCipherPolicy<B>, AdditiveCipherTemplate<> > > Encryption;
00100 typedef Encryption Decryption;
00101 };
00102
00103 NAMESPACE_END
00104
00105 #endif