diff options
Diffstat (limited to 'src/libs/7zip/unix/CPP/7zip/Crypto/ZipCrypto.h')
-rw-r--r-- | src/libs/7zip/unix/CPP/7zip/Crypto/ZipCrypto.h | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/src/libs/7zip/unix/CPP/7zip/Crypto/ZipCrypto.h b/src/libs/7zip/unix/CPP/7zip/Crypto/ZipCrypto.h new file mode 100644 index 000000000..6f104beb4 --- /dev/null +++ b/src/libs/7zip/unix/CPP/7zip/Crypto/ZipCrypto.h @@ -0,0 +1,56 @@ +// Crypto/ZipCrypto.h + +#ifndef __CRYPTO_ZIP_CRYPTO_H +#define __CRYPTO_ZIP_CRYPTO_H + +#include "Common/MyCom.h" + +#include "../ICoder.h" +#include "../IPassword.h" + +namespace NCrypto { +namespace NZip { + +const unsigned kHeaderSize = 12; + +class CCipher: + public ICompressFilter, + public ICryptoSetPassword, + public CMyUnknownImp +{ + UInt32 Keys[3]; + UInt32 Keys2[3]; + +protected: + void UpdateKeys(Byte b); + Byte DecryptByteSpec(); + void RestoreKeys() + { + for (int i = 0; i < 3; i++) + Keys[i] = Keys2[i]; + } + +public: + STDMETHOD(Init)(); + STDMETHOD(CryptoSetPassword)(const Byte *data, UInt32 size); +}; + +class CEncoder: public CCipher +{ +public: + MY_UNKNOWN_IMP1(ICryptoSetPassword) + STDMETHOD_(UInt32, Filter)(Byte *data, UInt32 size); + HRESULT WriteHeader(ISequentialOutStream *outStream, UInt32 crc); +}; + +class CDecoder: public CCipher +{ +public: + MY_UNKNOWN_IMP1(ICryptoSetPassword) + STDMETHOD_(UInt32, Filter)(Byte *data, UInt32 size); + HRESULT ReadHeader(ISequentialInStream *inStream); +}; + +}} + +#endif |