1 files changed, 56 insertions, 0 deletions
diff --git a/src/libs/7zip/win/CPP/7zip/Crypto/ZipCrypto.h b/src/libs/7zip/win/CPP/7zip/Crypto/ZipCrypto.h
new file mode 100644
index 000000000..6f104beb4
--- /dev/null
+++ b/src/libs/7zip/win/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