Encryption tool rekindles security debate

Encryption tool rekindles security debate - Technology - International Herald Tribune: "Zfone, that encrypts a computer-to- computer voice conversation so both parties can be confident that no one is listening in. It became available this year to Macintosh and Linux users of the calling system known as voice over Internet protocol.

What sets Zfone apart from comparable systems is that it does not require a web of computers to hold the keys, or long numbers, used in most encryption plans. Instead, it performs the key exchange inside the digital voice channel while the call is being set up, so no third party has the keys.

Zfone can automatically encrypt any call between users of freely available VOIP software programs like X-Lite, Gizmo or SJphone. It can be downloaded at www.philzimmermann.com."