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81 lines
1.5 KiB
C++
Executable File
81 lines
1.5 KiB
C++
Executable File
// Crypto/ZipCrypto.h
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#ifndef ZIP7_INC_CRYPTO_ZIP_CRYPTO_H
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#define ZIP7_INC_CRYPTO_ZIP_CRYPTO_H
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#include "../../Common/MyCom.h"
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#include "../ICoder.h"
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#include "../IPassword.h"
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namespace NCrypto {
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namespace NZip {
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const unsigned kHeaderSize = 12;
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/* ICompressFilter::Init() does nothing for this filter.
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Call to init:
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Encoder:
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CryptoSetPassword();
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WriteHeader();
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Decoder:
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[CryptoSetPassword();]
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ReadHeader();
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[CryptoSetPassword();] Init_and_GetCrcByte();
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[CryptoSetPassword();] Init_and_GetCrcByte();
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*/
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class CCipher:
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public ICompressFilter,
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public ICryptoSetPassword,
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public CMyUnknownImp
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{
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Z7_COM_UNKNOWN_IMP_1(ICryptoSetPassword)
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Z7_COM7F_IMP(Init())
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public:
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Z7_IFACE_COM7_IMP(ICryptoSetPassword)
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protected:
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UInt32 Key0;
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UInt32 Key1;
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UInt32 Key2;
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UInt32 KeyMem0;
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UInt32 KeyMem1;
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UInt32 KeyMem2;
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void RestoreKeys()
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{
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Key0 = KeyMem0;
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Key1 = KeyMem1;
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Key2 = KeyMem2;
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}
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public:
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virtual ~CCipher()
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{
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Key0 = KeyMem0 =
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Key1 = KeyMem1 =
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Key2 = KeyMem2 = 0;
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}
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};
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class CEncoder Z7_final: public CCipher
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{
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Z7_COM7F_IMP2(UInt32, Filter(Byte *data, UInt32 size))
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public:
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HRESULT WriteHeader_Check16(ISequentialOutStream *outStream, UInt16 crc);
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};
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class CDecoder Z7_final: public CCipher
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{
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Z7_COM7F_IMP2(UInt32, Filter(Byte *data, UInt32 size))
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public:
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Byte _header[kHeaderSize];
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HRESULT ReadHeader(ISequentialInStream *inStream);
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void Init_BeforeDecode();
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};
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}}
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#endif
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