static void Write(IO.EndianWriter s, bool encrypt, IO.IEndianStreamable obj,
long size = 0, ulong userKey = 0, Action <IO.EndianWriter> writeLeftovers = null)
{
if (!encrypt)
{
obj.Write(s);
if (writeLeftovers != null)
{
writeLeftovers(s);
}
}
else
{
using (var ms = new System.IO.MemoryStream())
using (var sin = new IO.EndianWriter(ms, Shell.EndianFormat.Big))
using (var encrypted = new IO.EndianReader(ms, Shell.EndianFormat.Big))
{
obj.Write(sin);
if (writeLeftovers != null)
{
writeLeftovers(sin);
}
encrypted.Seek(0);
var tea = new Security.Cryptography.PhxTEA(encrypted, s);
tea.InitializeKey(Security.Cryptography.PhxTEA.kKeyGameFile, userKey);
tea.Encrypt(size);
}
}
}
static void Read(IO.EndianReader s, bool decrypt, IO.IEndianStreamable obj,
long size = 0, ulong userKey = 0, Action <IO.EndianReader> readLeftovers = null)
{
if (!decrypt)
{
obj.Read(s);
}
else
{
using (var ms = new System.IO.MemoryStream())
using (var sout = new IO.EndianWriter(ms, Shell.EndianFormat.Big))
using (var decrypted = new IO.EndianReader(ms, Shell.EndianFormat.Big))
{
long position = s.BaseStream.Position;
var tea = new Security.Cryptography.PhxTEA(s, sout);
tea.InitializeKey(Security.Cryptography.PhxTEA.kKeyGameFile, userKey);
tea.Decrypt(size);
decrypted.Seek(0);
obj.Read(decrypted);
if (readLeftovers != null)
{
readLeftovers(decrypted);
}
}
}
}
