1 files changed, 62 insertions, 0 deletions
diff --git a/unrar/unrar/crypt.hpp b/unrar/unrar/crypt.hpp
new file mode 100644
index 0000000..e70aaa3
--- /dev/null
+++ b/unrar/unrar/crypt.hpp
@@ -0,0 +1,62 @@
+#ifndef _RAR_CRYPT_
+#define _RAR_CRYPT_
+
+enum { OLD_DECODE=0,OLD_ENCODE=1,NEW_CRYPT=2 };
+
+
+struct CryptKeyCacheItem
+{
+#ifndef _SFX_RTL_
+  CryptKeyCacheItem()
+  {
+    *Password=0;
+  }
+
+  ~CryptKeyCacheItem()
+  {
+    memset(AESKey,0,sizeof(AESKey));
+    memset(AESInit,0,sizeof(AESInit));
+    memset(Password,0,sizeof(Password));
+  }
+#endif
+  byte AESKey[16],AESInit[16];
+  char Password[MAXPASSWORD];
+  bool SaltPresent;
+  byte Salt[SALT_SIZE];
+  bool HandsOffHash;
+};
+
+class CryptData
+{
+  private:
+    void Encode13(byte *Data,uint Count);
+    void Decode13(byte *Data,uint Count);
+    void Crypt15(byte *Data,uint Count);
+    void UpdKeys(byte *Buf);
+    void Swap(byte *Ch1,byte *Ch2);
+    void SetOldKeys(char *Password);
+
+    Rijndael rin;
+    
+    byte SubstTable[256];
+    uint Key[4];
+    ushort OldKey[4];
+    byte PN1,PN2,PN3;
+
+    byte AESKey[16],AESInit[16];
+
+    static CryptKeyCacheItem Cache[4];
+    static int CachePos;
+  public:
+    void SetCryptKeys(char *Password,byte *Salt,bool Encrypt,bool OldOnly,bool HandsOffHash);
+    void SetAV15Encryption();
+    void SetCmt13Encryption();
+    void EncryptBlock20(byte *Buf);
+    void DecryptBlock20(byte *Buf);
+    void EncryptBlock(byte *Buf,int Size);
+    void DecryptBlock(byte *Buf,int Size);
+    void Crypt(byte *Data,uint Count,int Method);
+    static void SetSalt(byte *Salt,int SaltSize);
+};
+
+#endif