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// Crypto/MyAes.h
#ifndef __CRYPTO_MY_AES_H
#define __CRYPTO_MY_AES_H
#include "../../../C/Aes.h"
#include "../../Common/MyCom.h"
#include "../ICoder.h"
namespace NCrypto {
class CAesCbcCoder:
public ICompressFilter,
public ICryptoProperties,
public ICompressSetCoderProperties,
public CMyUnknownImp
{
AES_CODE_FUNC _codeFunc;
unsigned _offset;
unsigned _keySize;
bool _keyIsSet;
bool _encodeMode;
UInt32 _aes[AES_NUM_IVMRK_WORDS + 3];
Byte _iv[AES_BLOCK_SIZE];
bool SetFunctions(UInt32 algo);
public:
CAesCbcCoder(bool encodeMode, unsigned keySize);
virtual ~CAesCbcCoder() {}; // we need virtual destructor for derived classes
MY_UNKNOWN_IMP3(ICompressFilter, ICryptoProperties, ICompressSetCoderProperties)
INTERFACE_ICompressFilter(;)
STDMETHOD(SetKey)(const Byte *data, UInt32 size);
STDMETHOD(SetInitVector)(const Byte *data, UInt32 size);
STDMETHOD(SetCoderProperties)(const PROPID *propIDs, const PROPVARIANT *props, UInt32 numProps);
};
struct CAesCbcEncoder: public CAesCbcCoder
{
CAesCbcEncoder(unsigned keySize = 0): CAesCbcCoder(true, keySize) {}
};
struct CAesCbcDecoder: public CAesCbcCoder
{
CAesCbcDecoder(unsigned keySize = 0): CAesCbcCoder(false, keySize) {}
};
}
#endif
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