By Philip Zimmermann
Secure Voice over IP: Zfone
14 Mar 2006 - I've just released Zfone, a new product that takes a new approach to make a secure telephone for the Internet.
I think it's better than the other approaches to secure VoIP, because it achieves security without reliance on a PKI, key certification, trust models, certificate authorities, or key management complexity that bedevils the email encryption world. It also does not rely on SIP signaling for the key management, and in fact does not rely on any servers at all.
This looks like it might be quite cool, shame I'm not using linux at work any more, I'll have to wait 'til this eve to have a play ;-)