private static bool __isforwarded(Stream stream, NEncrypt.enc_type eType)
{
if (!stream.CanSeek)
{
return(false);
}
int num = (int)stream.Length;
if (num == 0)
{
return(false);
}
if (num < 24)
{
return(false);
}
int num2 = num;
byte[] array = new byte[num2];
BinaryReader binaryReader = new BinaryReader(stream);
array = binaryReader.ReadBytes(num);
NEncrypt.Crypto crypto = NEncrypt.Crypto.Create(eType);
bool result = false;
NEncrypt.enc_args enc_args = new NEncrypt.enc_args(eType, array, (uint)array.Length, null, false);
if (crypto != null)
{
result = crypto.IsForwarded(enc_args);
}
return(result);
}
private static bool Encrypt(NEncrypt.enc_args _enc_args, char key = ' ')
{
bool result = false;
NEncrypt.Crypto crypto = NEncrypt.Crypto.Create(_enc_args.type);
if (!crypto.IsForwarded(_enc_args) && crypto.Verify_File_Format(_enc_args.pSrcBuf))
{
crypto.Forward(_enc_args, key);
result = true;
}
return(result);
}
public static bool Decrypt(NEncrypt.enc_args _enc_args, char key = ' ')
{
bool result = false;
NEncrypt.Crypto crypto = NEncrypt.Crypto.Create(_enc_args.type);
if (crypto == null)
{
return(false);
}
if (crypto.IsForwarded(_enc_args))
{
crypto.Backward(_enc_args, key);
result = true;
}
return(result);
}
private static bool IsForwarded(byte[] pBuffer, uint nBufSize, NEncrypt.enc_type eType)
{
NEncrypt.Crypto crypto = NEncrypt.Crypto.Create(eType);
NEncrypt.enc_args enc_args = new NEncrypt.enc_args(eType, pBuffer, nBufSize, null, false);
if (eType == NEncrypt.enc_type.ENC_DEFAULT)
{
enc_args.uiSrcFileSize = nBufSize;
}
bool result = false;
if (crypto != null)
{
result = crypto.IsForwarded(enc_args);
}
return(result);
}
public static NEncrypt.Crypto Create(NEncrypt.enc_type eType)
{
NEncrypt.Crypto result = null;
switch (eType)
{
case NEncrypt.enc_type.ENC_DEFAULT:
return(new NEncrypt._Default());
case NEncrypt.enc_type.ENC_NIF:
return(new NEncrypt._NIF());
case NEncrypt.enc_type.ENC_DDS:
return(new NEncrypt._DDS());
case NEncrypt.enc_type.ENC_TGA:
return(new NEncrypt._TGA());
default:
return(result);
}
}
