public static void Decrypt(int I, string file)
{
KKtIO reader = KKtIO.OpenReader(file);
if (reader.ReadInt64() != 0x454C494641564944)
{
reader.Close();
Encrypt(I, file);
}
else
{
Console.Title = "PD_Tool: DIVAFILE Decryptor - File: " + Path.GetFileName(file);
reader.ReadUInt32();
int StreamLenght = (int)reader.Length;
int FileLenght = reader.ReadInt32();
byte[] decrypted = new byte[StreamLenght];
reader.Seek(0, 0);
using (AesManaged crypto = new AesManaged())
{
crypto.Key = Key;
crypto.IV = new byte[16];
crypto.Mode = CipherMode.ECB;
crypto.Padding = PaddingMode.Zeros;
using (CryptoStream cryptoData = new CryptoStream(reader.BaseStream,
crypto.CreateDecryptor(crypto.Key, crypto.IV), CryptoStreamMode.Read))
cryptoData.Read(decrypted, 0, StreamLenght);
}
KKtIO writer = KKtIO.OpenWriter(file, FileLenght);
for (int i = 0x10; i < StreamLenght && i < FileLenght + 0x10; i++)
{
writer.Write(decrypted[i]);
}
writer.Close();
}
Console.Title = "PD_Tool";
}
public void UnPack(string file, bool SaveToDisk)
{
Files = null;
Signature = Farc.FArC;
FT = false;
Console.Title = "PD_Tool: FARC Extractor - Archive: " + Path.GetFileName(file);
if (File.Exists(file))
{
KKtIO reader = KKtIO.OpenReader(file);
string directory = Path.GetFullPath(file).Replace(Path.GetExtension(file), "");
Signature = (Farc)reader.ReadInt32Endian(true);
if (Signature == Farc.FARC)
{
Directory.CreateDirectory(directory);
int HeaderLenght = reader.ReadInt32Endian(true);
int Mode = reader.ReadInt32Endian(true);
reader.ReadUInt32();
bool GZip = (Mode & 2) == 2;
bool ECB = (Mode & 4) == 4;
int FARCType = reader.ReadInt32Endian(true);
FT = FARCType == 0x10;
bool CBC = !FT && FARCType != 0x40;
if (ECB && CBC)
{
byte[] Header = new byte[HeaderLenght - 0x08];
FT = true;
reader.Close();
FileStream stream = new FileStream(file, FileMode.Open,
FileAccess.ReadWrite, FileShare.ReadWrite);
stream.Seek(0x10, 0);
using (CryptoStream cryptoStream = new CryptoStream(stream,
GetAes(true, null).CreateDecryptor(), CryptoStreamMode.Read))
cryptoStream.Read(Header, 0x00, HeaderLenght - 0x08);
Header = SkipData(Header, 0x10);
KKtIO CBCreader = new KKtIO(new MemoryStream(Header));
CBCreader.BaseStream.Seek(0, 0);
FARCType = CBCreader.ReadInt32Endian(true);
FT = FARCType == 0x10;
if (CBCreader.ReadInt32Endian(true) == 1)
{
Files = new FARCFile[CBCreader.ReadInt32Endian(true)];
}
CBCreader.ReadUInt32();
HeaderReader(HeaderLenght, ref Files, ref CBCreader);
CBCreader.Close();
}
else
{
if (reader.ReadInt32Endian(true) == 1)
{
Files = new FARCFile[reader.ReadInt32Endian(true)];
}
reader.ReadUInt32();
HeaderReader(HeaderLenght, ref Files, ref reader);
reader.Close();
}
for (int i = 0; i < Files.Length; i++)
{
int FileSize = ECB || Files[i].ECB ? (int)Main.
Align(Files[i].SizeComp, 0x10) : Files[i].SizeComp;
FileStream stream = new FileStream(file, FileMode.Open,
FileAccess.ReadWrite, FileShare.ReadWrite);
stream.Seek(Files[i].Offset, 0);
Files[i].Data = new byte[FileSize];
bool Encrypted = false;
if (ECB)
{
if ((FT && Files[i].ECB) || CBC)
{
using (CryptoStream cryptoStream = new CryptoStream(stream,
GetAes(true, null).CreateDecryptor(), CryptoStreamMode.Read))
cryptoStream.Read(Files[i].Data, 0, FileSize);
Files[i].Data = SkipData(Files[i].Data, 0x10);
}
else
{
using (CryptoStream cryptoStream = new CryptoStream(stream,
GetAes(false, null).CreateDecryptor(), CryptoStreamMode.Read))
cryptoStream.Read(Files[i].Data, 0, FileSize);
}
Encrypted = true;
}
bool Compressed = false;
bool LocalGZip = (FT && Files[i].GZip) || GZip && Files[i].SizeUnc != 0;
if (LocalGZip)
{
GZipStream gZipStream;
if (Encrypted)
{
gZipStream = new GZipStream(new MemoryStream(
Files[i].Data), CompressionMode.Decompress);
stream.Close();
}
else
{
gZipStream = new GZipStream(stream, CompressionMode.Decompress);
}
Files[i].Data = new byte[Files[i].SizeUnc];
gZipStream.Read(Files[i].Data, 0, Files[i].SizeUnc);
Compressed = true;
}
if (!Encrypted && !Compressed)
{
Files[i].Data = new byte[Files[i].SizeUnc];
stream.Read(Files[i].Data, 0, Files[i].SizeUnc);
stream.Close();
}
if (SaveToDisk)
{
KKtIO writer = KKtIO.OpenWriter(Path.Combine(directory, Files[i].Name), true);
writer.Write(Files[i].Data);
writer.Close();
Files[i].Data = null;
}
}
}
else if (Signature == Farc.FArC)
{
Directory.CreateDirectory(directory);
int HeaderLength = reader.ReadInt32Endian(true);
reader.ReadUInt32();
HeaderReader(HeaderLength, ref Files, ref reader);
reader.Close();
for (int i = 0; i < Files.Length; i++)
{
FileStream stream = new FileStream(file, FileMode.Open,
FileAccess.ReadWrite, FileShare.ReadWrite);
stream.Seek(Files[i].Offset, 0);
Files[i].Data = new byte[Files[i].SizeComp];
stream.Read(Files[i].Data, 0, Files[i].SizeComp);
stream.Close();
using (MemoryStream memorystream = new MemoryStream(Files[i].Data))
{
GZipStream gZipStream = new GZipStream(memorystream, CompressionMode.Decompress);
Files[i].Data = new byte[Files[i].SizeUnc];
gZipStream.Read(Files[i].Data, 0, Files[i].SizeUnc);
}
KKtIO writer = KKtIO.OpenWriter(Path.Combine(directory, Files[i].Name), true);
writer.Write(Files[i].Data);
writer.Close();
Files[i].Data = null;
}
}
else if (Signature == Farc.FArc)
{
Directory.CreateDirectory(directory);
int HeaderLength = reader.ReadInt32Endian(true);
reader.ReadUInt32();
HeaderReader(HeaderLength, ref Files, ref reader);
for (int i = 0; i < Files.Length; i++)
{
FileStream stream = new FileStream(file, FileMode.Open,
FileAccess.ReadWrite, FileShare.ReadWrite);
stream.Seek(Files[i].Offset, 0);
Files[i].Data = new byte[Files[i].SizeUnc];
stream.Read(Files[i].Data, 0, Files[i].SizeUnc);
stream.Close();
KKtIO writer = KKtIO.OpenWriter(Path.Combine(directory, Files[i].Name), true);
writer.Write(Files[i].Data);
writer.Close();
Files[i].Data = null;
}
}
else
{
Console.WriteLine("Unknown signature");
reader.Close();
}
}
else
{
Console.WriteLine("File {0} doesn't exist.", Path.GetFileName(file));
}
Console.Clear();
Console.Title = "PD_Tool: FARC Extractor";
}
