private void encryptTitleKey()
{
commonKeyIndex = newKeyIndex;
byte[] ckey = CommonKey.GetStandardKey();
byte[] iv = BitConverter.GetBytes(Shared.Swap(titleId));
Array.Resize(ref iv, 16);
RijndaelManaged rm = new RijndaelManaged();
rm.Mode = CipherMode.CBC;
rm.Padding = PaddingMode.None;
rm.KeySize = 128;
rm.BlockSize = 128;
rm.Key = ckey;
rm.IV = iv;
ICryptoTransform encryptor = rm.CreateEncryptor();
MemoryStream ms = new MemoryStream(decryptedTitleKey);
CryptoStream cs = new CryptoStream(ms, encryptor, CryptoStreamMode.Read);
cs.Read(encryptedTitleKey, 0, encryptedTitleKey.Length);
cs.Dispose();
ms.Dispose();
encryptor.Dispose();
rm.Clear();
}
private void decryptTitleKey()
{
byte[] ckey;
if (dsitik)
{
ckey = CommonKey.GetDSiKey();
}
else
{
ckey = (commonKeyIndex == 0x01) ? CommonKey.GetKoreanKey() : CommonKey.GetStandardKey();
}
byte[] iv = BitConverter.GetBytes(Shared.Swap(titleId));
Array.Resize(ref iv, 16);
RijndaelManaged rm = new RijndaelManaged();
rm.Mode = CipherMode.CBC;
rm.Padding = PaddingMode.None;
rm.KeySize = 128;
rm.BlockSize = 128;
rm.Key = ckey;
rm.IV = iv;
ICryptoTransform decryptor = rm.CreateDecryptor();
MemoryStream ms = new MemoryStream(encryptedTitleKey);
CryptoStream cs = new CryptoStream(ms, decryptor, CryptoStreamMode.Read);
cs.Read(decryptedTitleKey, 0, decryptedTitleKey.Length);
cs.Dispose();
ms.Dispose();
decryptor.Dispose();
rm.Clear();
}