NOTE: This field is now obsolete.
Use DataDescriptorSignature instead
Signature for data descriptor
public const int EXTSIG = 134695760;
Remarks
This is only used where the length, Crc, or compressed size isnt known when the entry is created and the output stream doesnt support seeking. The local entry cannot be 'patched' with the correct values in this case so the values are recorded after the data prefixed by this header, as well as in the central directory.