Adler32 checksum no work

[elmagnificogi]

Adler32 checksum no work

In Formatter.cs use Adler32 as checksum

        static byte[] PackCompressedBlock(byte[] data, DataType dataType)
        {
            var adler = BitConverter.GetBytes(Adler32.Compute(data));
            using (var compressedStream = new MemoryStream())
            {
                compressedStream.WriteByte(0x58);
                compressedStream.WriteByte(0x85);

                using (var outputStream = new DeflateStream(compressedStream, CompressionMode.Compress, true))
                {
                    outputStream.Write(BitConverter.GetBytes((int)dataType), 0, 4);
                    outputStream.Write(BitConverter.GetBytes(data.Length), 0, 4);
                    outputStream.Write(data, 0, data.Length);
                    outputStream.Flush();
                }

                compressedStream.WriteByte(adler[3]);
                compressedStream.WriteByte(adler[2]);
                compressedStream.WriteByte(adler[1]);
                compressedStream.WriteByte(adler[0]);
                return compressedStream.ToArray();
            }
        }

But in Parse.cs, just jump the Adler32 checksum, extrac the compressed bytes

        static byte[] UnpackCompressedBlock(byte[] compressed, out DataType type)
        {
            byte[] data;
            using (var decompressed = new MemoryStream())
            {
                using (var compressedStream = new MemoryStream(compressed, 2, compressed.Length - 6))
                using (var decompressor = new DeflateStream(compressedStream, CompressionMode.Decompress))
                {
                    decompressor.CopyTo(decompressed);
                }

                decompressed.Position = 0;
                var buf = new byte[4];
                decompressed.Read(buf, 0, 4);
                type = (DataType)BitConverter.ToInt32(buf, 0);
                decompressed.Read(buf, 0, 4);
                var size = BitConverter.ToInt32(buf, 0);
                data = new byte[size];
                decompressed.Read(data, 0, size);
            }

            return data;
        }