private static byte[] calculateDecryptedKey(byte[] encryptedKey, byte[] IV)
{
AESDecryption decryption = new AESDecryption(Settings.commonKey, IV)
{
};
return(decryption.decrypt(encryptedKey));
}
public NUSTitle loadNusTitle(NUSTitleConfig config)
{
NUSTitle result = new NUSTitle();
NUSDataProvider dataProvider = getDataProvider(result, config);
result.dataProvider = (dataProvider);
TMD tmd = TMD.parseTMD(dataProvider.getRawTMD());
result.TMD = (tmd);
if (tmd == null)
{
//MessageBox.Show("TMD not found.");
throw new Exception();
}
Ticket ticket = config.ticket;
if (ticket == null)
{
ticket = Ticket.parseTicket(dataProvider.getRawTicket());
}
result.ticket = ticket;
// System.out.println(ticket);
Content fstContent = tmd.getContentByIndex(0);
MemoryStream fstContentEncryptedStream = dataProvider.getInputStreamFromContent(fstContent, 0);
if (fstContentEncryptedStream == null)
{
return(null);
}
byte[] fstBytes = fstContentEncryptedStream.ToArray();// StreamUtils.getBytesFromStream(fstContentEncryptedStream, (int)fstContent.getEncryptedFileSize());
if (fstContent.isEncrypted())
{
AESDecryption aesDecryption = new AESDecryption(ticket.decryptedKey, new byte[0x10]);
fstBytes = aesDecryption.decrypt(fstBytes);
}
Dictionary <int, Content> contents = tmd.getAllContents();
FST fst = FST.parseFST(fstBytes, contents);
result.FST = (fst);
return(result);
}
public byte[] readDecryptedChunk(long readOffset, byte[] key, byte[] IV)
{
int chunkSize = 0x8000;
byte[] encryptedChunk = readEncryptedToByteArray(readOffset, 0, chunkSize);
byte[] decryptedChunk = new byte[chunkSize];
AESDecryption aesDecryption = new AESDecryption(key, IV);
decryptedChunk = aesDecryption.decrypt(encryptedChunk);
return(decryptedChunk);
}