3.13

7zip/Crypto/Rar20/Rar20Crypto.h

@@ -0,0 +1,32 @@
+// Crypto/Rar20/Crypto.h
+
+#pragma once
+
+#ifndef __CRYPTO_RAR20_CRYPTO_H
+#define __CRYPTO_RAR20_CRYPTO_H
+
+namespace NCrypto {
+namespace NRar20 {
+
+class CData
+{
+  BYTE SubstTable[256];
+  UINT32 Keys[4];
+  UINT32 SubstLong(UINT32 t)
+  {
+    return (UINT32)SubstTable[(int)t & 255] | 
+           ((UINT32)SubstTable[(int)(t >> 8) & 255] << 8) |
+           ((UINT32)SubstTable[(int)(t >> 16) & 255] << 16) | 
+           ((UINT32)SubstTable[(int)(t >> 24) & 255] << 24);
+  }
+
+  void UpdateKeys(const BYTE *data);
+public:
+  void EncryptBlock(BYTE *Buf);
+  void DecryptBlock(BYTE *Buf);
+  void SetPassword(const BYTE *password, UINT32 passwordLength);
+};
+
+}}
+
+#endif