diff options
Diffstat (limited to 'lib/cryptopp/gcm.h')
| -rw-r--r-- | lib/cryptopp/gcm.h | 106 |
1 files changed, 0 insertions, 106 deletions
diff --git a/lib/cryptopp/gcm.h b/lib/cryptopp/gcm.h deleted file mode 100644 index 272a51c9c..000000000 --- a/lib/cryptopp/gcm.h +++ /dev/null @@ -1,106 +0,0 @@ -#ifndef CRYPTOPP_GCM_H -#define CRYPTOPP_GCM_H - -#include "authenc.h" -#include "modes.h" - -NAMESPACE_BEGIN(CryptoPP) - -//! . -enum GCM_TablesOption {GCM_2K_Tables, GCM_64K_Tables}; - -//! . -class CRYPTOPP_DLL CRYPTOPP_NO_VTABLE GCM_Base : public AuthenticatedSymmetricCipherBase -{ -public: - // AuthenticatedSymmetricCipher - std::string AlgorithmName() const - {return GetBlockCipher().AlgorithmName() + std::string("/GCM");} - size_t MinKeyLength() const - {return GetBlockCipher().MinKeyLength();} - size_t MaxKeyLength() const - {return GetBlockCipher().MaxKeyLength();} - size_t DefaultKeyLength() const - {return GetBlockCipher().DefaultKeyLength();} - size_t GetValidKeyLength(size_t n) const - {return GetBlockCipher().GetValidKeyLength(n);} - bool IsValidKeyLength(size_t n) const - {return GetBlockCipher().IsValidKeyLength(n);} - unsigned int OptimalDataAlignment() const; - IV_Requirement IVRequirement() const - {return UNIQUE_IV;} - unsigned int IVSize() const - {return 12;} - unsigned int MinIVLength() const - {return 1;} - unsigned int MaxIVLength() const - {return UINT_MAX;} // (W64LIT(1)<<61)-1 in the standard - unsigned int DigestSize() const - {return 16;} - lword MaxHeaderLength() const - {return (W64LIT(1)<<61)-1;} - lword MaxMessageLength() const - {return ((W64LIT(1)<<39)-256)/8;} - -protected: - // AuthenticatedSymmetricCipherBase - bool AuthenticationIsOnPlaintext() const - {return false;} - unsigned int AuthenticationBlockSize() const - {return HASH_BLOCKSIZE;} - void SetKeyWithoutResync(const byte *userKey, size_t keylength, const NameValuePairs ¶ms); - void Resync(const byte *iv, size_t len); - size_t AuthenticateBlocks(const byte *data, size_t len); - void AuthenticateLastHeaderBlock(); - void AuthenticateLastConfidentialBlock(); - void AuthenticateLastFooterBlock(byte *mac, size_t macSize); - SymmetricCipher & AccessSymmetricCipher() {return m_ctr;} - - virtual BlockCipher & AccessBlockCipher() =0; - virtual GCM_TablesOption GetTablesOption() const =0; - - const BlockCipher & GetBlockCipher() const {return const_cast<GCM_Base *>(this)->AccessBlockCipher();}; - byte *HashBuffer() {return m_buffer+REQUIRED_BLOCKSIZE;} - byte *HashKey() {return m_buffer+2*REQUIRED_BLOCKSIZE;} - byte *MulTable() {return m_buffer+3*REQUIRED_BLOCKSIZE;} - inline void ReverseHashBufferIfNeeded(); - - class CRYPTOPP_DLL GCTR : public CTR_Mode_ExternalCipher::Encryption - { - protected: - void IncrementCounterBy256(); - }; - - GCTR m_ctr; - static word16 s_reductionTable[256]; - static volatile bool s_reductionTableInitialized; - enum {REQUIRED_BLOCKSIZE = 16, HASH_BLOCKSIZE = 16}; -}; - -//! . -template <class T_BlockCipher, GCM_TablesOption T_TablesOption, bool T_IsEncryption> -class GCM_Final : public GCM_Base -{ -public: - static std::string StaticAlgorithmName() - {return T_BlockCipher::StaticAlgorithmName() + std::string("/GCM");} - bool IsForwardTransformation() const - {return T_IsEncryption;} - -private: - GCM_TablesOption GetTablesOption() const {return T_TablesOption;} - BlockCipher & AccessBlockCipher() {return m_cipher;} - typename T_BlockCipher::Encryption m_cipher; -}; - -//! <a href="http://www.cryptolounge.org/wiki/GCM">GCM</a> -template <class T_BlockCipher, GCM_TablesOption T_TablesOption=GCM_2K_Tables> -struct GCM : public AuthenticatedSymmetricCipherDocumentation -{ - typedef GCM_Final<T_BlockCipher, T_TablesOption, true> Encryption; - typedef GCM_Final<T_BlockCipher, T_TablesOption, false> Decryption; -}; - -NAMESPACE_END - -#endif |