public uint ReadOffset()
{
var offset = (uint)BaseStream.Position;
offset = (offset - FStart) ^ uint.MaxValue;
offset *= Hash;
offset -= CryptoConstants.WzOffsetConstant;
offset = CryptoConstants.RotateLeft(offset, (byte)(offset & 0x1F));
var encryptedOffset = ReadUInt32();
offset ^= encryptedOffset;
offset += FStart * 2;
return(offset);
}
public static WzMutableKey GenerateWzKey(byte[] WzIv)
{
return(new WzMutableKey(WzIv, CryptoConstants.GetTrimmedUserKey()));
}
public static WzMutableKey GenerateWzKey(byte[] wzIv) => new WzMutableKey(wzIv, CryptoConstants.GetTrimmedUserKey());
public static byte[] GenerateWzKey(byte[] WzIv)
{
return(GenerateWzKey(WzIv, CryptoConstants.getTrimmedUserKey()));
}
public WzBinaryReader(Stream input, byte[] wzIv)
: base(input)
{
WzKey = CryptoConstants.GenerateWzKey(wzIv);
}
public WzBinaryReader(Stream input, WzMapleVersion mapleVersion)
: base(input)
{
WzKey = new WzMutableKey(mapleVersion.EncryptionKey(), CryptoConstants.GetTrimmedUserKey(mapleVersion));
}
public WzBinaryReader(Stream input, byte[] WzIv)
: base(input)
{
WzKey = new WzMutableKey(WzIv, CryptoConstants.GetTrimmedUserKey());
}
/// <summary>
/// Encrypts data with AES and updates the IV
/// </summary>
/// <param name="data"> The data to crypt </param>
public void Crypt(byte[] data)
{
AESEncryption.AESCrypt(IV, data, data.Length, CryptoConstants.GetTrimmedUserKey());
UpdateIV();
}
