Please guide us in making those functions secret or encrypted so that others cannt use our functions.
Nope. You can make it marginally more difficult (encrypted) but you can't "prevent" it entirely .. and the harder you try to make it, the more fun you make it for crackers to reverse-engineer. About the best you could do to hide the "super secret sauce" (lol .. Vladis) is put it on a secure token (eg: SmartCard) and call it from there. While not foolproof, hardware is [generally] more difficult to hack. Cheers, Michael Holstein CISSP GCIA Cleveland State University _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/