secure nslookup and secure dynamic update

[Steve WANG]

Hi, all,

Where can I find a nslookup package which provides secure lookup service?
It seems to me that the BIND822 nslookup does not provide secure lookups
(am I correct?).

Another question about the nsupdate: in BIND822, to send a dynamic update
request, the user needs to provide a shared key (correct me if I am wrong
here). How is this shared key stored in the DNS server? (how to configure
it)

Where can I get this kind of information?

Thank you!

Steve