Initialer Commit

CPP/7zip/Crypto/ZipStrong.h

@@ -0,0 +1,58 @@
+// Crypto/ZipStrong.h
+
+#ifndef __CRYPTO_ZIP_STRONG_H
+#define __CRYPTO_ZIP_STRONG_H
+
+#include "../../Common/MyBuffer.h"
+
+#include "../IPassword.h"
+
+#include "MyAes.h"
+
+namespace NCrypto {
+namespace NZipStrong {
+
+/* ICompressFilter::Init() does nothing for this filter.
+  Call to init:
+    Decoder:
+      [CryptoSetPassword();]
+      ReadHeader();
+      [CryptoSetPassword();] Init_and_CheckPassword();
+      [CryptoSetPassword();] Init_and_CheckPassword();
+*/
+
+struct CKeyInfo
+{
+  Byte MasterKey[32];
+  UInt32 KeySize;
+  
+  void SetPassword(const Byte *data, UInt32 size);
+};
+
+class CBaseCoder:
+  public CAesCbcDecoder,
+  public ICryptoSetPassword
+{
+protected:
+  CKeyInfo _key;
+  CByteBuffer _buf;
+  Byte *_bufAligned;
+public:
+  STDMETHOD(Init)();
+  STDMETHOD(CryptoSetPassword)(const Byte *data, UInt32 size);
+};
+
+class CDecoder: public CBaseCoder
+{
+  UInt32 _ivSize;
+  Byte _iv[16];
+  UInt32 _remSize;
+public:
+  MY_UNKNOWN_IMP1(ICryptoSetPassword)
+  HRESULT ReadHeader(ISequentialInStream *inStream, UInt32 crc, UInt64 unpackSize);
+  HRESULT Init_and_CheckPassword(bool &passwOK);
+};
+
+}}
+
+#endif