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// Crypto/MyAes.h
#ifndef ZIP7_INC_CRYPTO_MY_AES_H
#define ZIP7_INC_CRYPTO_MY_AES_H
#include "../../../C/Aes.h"
#include "../../Common/MyBuffer2.h"
#include "../../Common/MyCom.h"
#include "../ICoder.h"
namespace NCrypto {
#ifdef Z7_EXTRACT_ONLY
#define Z7_IFACEN_IAesCoderSetFunctions(x)
#else
#define Z7_IFACEN_IAesCoderSetFunctions(x) \
virtual bool SetFunctions(UInt32 algo) x
#endif
class CAesCoder:
public ICompressFilter,
public ICryptoProperties,
#ifndef Z7_EXTRACT_ONLY
public ICompressSetCoderProperties,
#endif
public CMyUnknownImp
{
Z7_COM_QI_BEGIN2(ICompressFilter)
Z7_COM_QI_ENTRY(ICryptoProperties)
#ifndef Z7_EXTRACT_ONLY
Z7_COM_QI_ENTRY(ICompressSetCoderProperties)
#endif
Z7_COM_QI_END
Z7_COM_ADDREF_RELEASE
public:
Z7_IFACE_COM7_IMP_NONFINAL(ICompressFilter)
Z7_IFACE_COM7_IMP(ICryptoProperties)
private:
#ifndef Z7_EXTRACT_ONLY
Z7_IFACE_COM7_IMP(ICompressSetCoderProperties)
#endif
protected:
bool _keyIsSet;
// bool _encodeMode;
// bool _ctrMode;
// unsigned _offset;
unsigned _keySize;
unsigned _ctrPos; // we need _ctrPos here for Init() / SetInitVector()
AES_CODE_FUNC _codeFunc;
AES_SET_KEY_FUNC _setKeyFunc;
private:
// UInt32 _aes[AES_NUM_IVMRK_WORDS + 3];
CAlignedBuffer1 _aes;
Byte _iv[AES_BLOCK_SIZE];
// UInt32 *Aes() { return _aes + _offset; }
protected:
UInt32 *Aes() { return (UInt32 *)(void *)(Byte *)_aes; }
Z7_IFACE_PURE(IAesCoderSetFunctions)
public:
CAesCoder(
// bool encodeMode,
unsigned keySize
// , bool ctrMode
);
virtual ~CAesCoder() {} // we need virtual destructor for derived classes
void SetKeySize(unsigned size) { _keySize = size; }
};
#ifndef Z7_EXTRACT_ONLY
struct CAesCbcEncoder: public CAesCoder
{
CAesCbcEncoder(unsigned keySize = 0): CAesCoder(keySize)
{
_setKeyFunc = Aes_SetKey_Enc;
_codeFunc = g_AesCbc_Encode;
}
Z7_IFACE_IMP(IAesCoderSetFunctions)
};
#endif
struct CAesCbcDecoder: public CAesCoder
{
CAesCbcDecoder(unsigned keySize = 0): CAesCoder(keySize)
{
_setKeyFunc = Aes_SetKey_Dec;
_codeFunc = g_AesCbc_Decode;
}
Z7_IFACE_IMP(IAesCoderSetFunctions)
};
#ifndef Z7_SFX
struct CAesCtrCoder: public CAesCoder
{
private:
// unsigned _ctrPos;
// Z7_IFACE_COM7_IMP(ICompressFilter)
// Z7_COM7F_IMP(Init())
Z7_COM7F_IMP2(UInt32, Filter(Byte *data, UInt32 size))
public:
CAesCtrCoder(unsigned keySize = 0): CAesCoder(keySize)
{
_ctrPos = 0;
_setKeyFunc = Aes_SetKey_Enc;
_codeFunc = g_AesCtr_Code;
}
Z7_IFACE_IMP(IAesCoderSetFunctions)
};
#endif
}
#endif
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