Brucie,

This is probably c or c++ code since Java designers dropped 'struct' and 'union' when they developed their single parent language. VB used collections instead of structures.

Hash addressing is used to fit data with large address spaces into smaller compartments. If you have 10,000 possible addresses to fit into 100 pigeon holes but only three pieces of mail, hashing will give you a way of deciding what holes the mail goes in.

You might be hitting server security at this free kuwait@defense.iq site. Appears to be an Apache server which would be running Java with hooks to c. If you are trying to hack the security you might want to study the code at, the Lysator, The Academic Computer Society in Sweden at:

http://www.google.ca/search?q=cache:27AWFPD0X2AJ:cvs.lysator.liu.se/viewcvs/viewcvs.cgi/lsh/src/client_keyexchange.c%3Fcvsroot%3Dlsh%26rev%3D1.3+%22struct+crypto_instance+*kex_make_encrypt%22&hl=en&lr=lang_en&ie=UTF-8

Cut and paste the whole url into your address bar if it isn't highlighted for clicking.

The society is at:
(http://www.lysator.liu.se/lysator/)