1 // Crypto/MyAes.h 2 3 #ifndef __CRYPTO_MY_AES_H 4 #define __CRYPTO_MY_AES_H 5 6 #include "../../../C/Aes.h" 7 8 #include "../../Common/MyCom.h" 9 10 #include "../ICoder.h" 11 12 namespace NCrypto { 13 14 class CAesCbcCoder: 15 public ICompressFilter, 16 public ICryptoProperties, 17 public ICompressSetCoderProperties, 18 public CMyUnknownImp 19 { 20 AES_CODE_FUNC _codeFunc; 21 unsigned _offset; 22 unsigned _keySize; 23 bool _keyIsSet; 24 bool _encodeMode; 25 UInt32 _aes[AES_NUM_IVMRK_WORDS + 3]; 26 Byte _iv[AES_BLOCK_SIZE]; 27 28 bool SetFunctions(UInt32 algo); 29 public: 30 CAesCbcCoder(bool encodeMode, unsigned keySize); 31 MY_UNKNOWN_IMP2(ICryptoProperties, ICompressSetCoderProperties) 32 STDMETHOD(Init)(); 33 STDMETHOD_(UInt32, Filter)(Byte *data, UInt32 size); 34 STDMETHOD(SetKey)(const Byte *data, UInt32 size); 35 STDMETHOD(SetInitVector)(const Byte *data, UInt32 size); 36 STDMETHOD(SetCoderProperties)(const PROPID *propIDs, const PROPVARIANT *props, UInt32 numProps); 37 }; 38 39 struct CAesCbcEncoder: public CAesCbcCoder 40 { 41 CAesCbcEncoder(unsigned keySize = 0): CAesCbcCoder(true, keySize) {} 42 }; 43 44 struct CAesCbcDecoder: public CAesCbcCoder 45 { 46 CAesCbcDecoder(unsigned keySize = 0): CAesCbcCoder(false, keySize) {} 47 }; 48 49 50 } 51 52 #endif 53
