UnRAR: Allow using key and IV instead of password

deps/unrar/crypt.cpp

@@ -91,6 +91,11 @@ bool CryptData::SetCryptKeys(bool Encrypt,CRYPT_METHOD Method,
   return true;
 }
 
+void CryptData::SetRijndalDecryptKey(byte *Key,byte *InitV)
+{
+  CryptData::Method=CRYPT_RAR30;
+  rin.Init(false,Key,128,InitV);
+}
 
 // Use the current system time to additionally randomize data.
 static void TimeRandomize(byte *RndBuf,size_t BufSize)

deps/unrar/crypt.hpp

@@ -81,6 +81,7 @@ class CryptData
     bool SetCryptKeys(bool Encrypt,CRYPT_METHOD Method,SecPassword *Password,
          const byte *Salt,const byte *InitV,uint Lg2Cnt,
          byte *HashKey,byte *PswCheck);
+    void SetRijndalDecryptKey(byte *Key,byte *InitV);
     void SetAV15Encryption();
     void SetCmt13Encryption();
     void EncryptBlock(byte *Buf,size_t Size);

deps/unrar/rdwrfn.cpp

@@ -292,6 +292,13 @@ void ComprDataIO::SetEncryption(bool Encrypt,CRYPT_METHOD Method,
 #endif
 }
 
+void ComprDataIO::InitRijindal(byte *Key,byte *InitV)
+{
+#ifndef RAR_NOCRYPT
+  Decryption=true;
+  Decrypt->SetRijndalDecryptKey(Key,InitV);
+#endif
+}
 
 #if !defined(SFX_MODULE) && !defined(RAR_NOCRYPT)
 void ComprDataIO::SetAV15Encryption()

deps/unrar/rdwrfn.hpp

@@ -70,6 +70,7 @@ class ComprDataIO
     void SetSubHeader(FileHeader *hd,int64 *Pos) {SubHead=hd;SubHeadPos=Pos;}
     void SetEncryption(bool Encrypt,CRYPT_METHOD Method,SecPassword *Password,
          const byte *Salt,const byte *InitV,uint Lg2Cnt,byte *HashKey,byte *PswCheck);
+    void InitRijindal(byte *Key,byte *InitV);
     void SetAV15Encryption();
     void SetCmt13Encryption();
     void SetUnpackToMemory(byte *Addr,uint Size);