byte[] InitEncrypted(int key, NpaTitleId game_id, byte[] key_table)
{
var position = Position;
if (0 != position)
{
Position = 0;
}
byte[] buffer = new byte[m_encrypted_length];
m_encrypted_length = m_stream.Read(buffer, 0, m_encrypted_length);
Position = position;
if (game_id == NpaTitleId.LAMENTO)
{
for (int i = 0; i < m_encrypted_length; i++)
{
buffer[i] = (byte)(key_table[buffer[i]] - key);
}
}
else
{
for (int i = 0; i < m_encrypted_length; i++)
{
buffer[i] = (byte)(key_table[buffer[i]] - key - i);
}
}
return(buffer);
}
int GetEncryptedLength(NpaEntry entry, NpaTitleId game_id)
{
int length = 0x1000;
if (game_id != NpaTitleId.LAMENTO)
{
length += entry.RawName.Length;
}
return(length);
}
internal static int GetArchiveKey(NpaTitleId game_id, int key1, int key2)
{
if (NpaTitleId.LAMENTO == game_id)
{
return(key1 + key2);
}
else
{
return(key1 * key2);
}
}
public EncryptionScheme(NpaTitleId id, uint key, byte[] order)
{
TitleId = id;
NameKey = key;
Order = order;
}
