Registry Software and Protocol
The .nz registry uses open source software, which is periodically published on SourceForge. The protocol used by this software has non-repudiation built in to it using PGP, and unlike ".com" there is no concept of "locking" domains – transferring a domain requires only knowledge of a secret called a UDAI key which business rules dictate is sent to registrants during registration (and must be re-issued on demand at no cost). This prevents Domain hijacking. The protocol was contemporary with EPP, and due to these extra design features is now being ratified as an internet RFC.
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