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This post will self-destruct in five minutes

By | July 22, 2009, 8:35 AM PDT

Not really. But future posts might.

It’s all thanks to a technology called Vanish, now being perfected at the University of Washington. Once made part of a Firefox plug-in, as planned, Vanish will let users not only set the destruction of messages, but erase every cached copy as well.

The technique combines encryption and peer-to-peer technologies. A message encrypted with a public key is then timed to re-encrypt at a specific point, and then all copies run through the Vuze BitTorrent hash table.

The current system supports time-out periods of 8-9 hours, although that can be adjusted.

The lead designer of Vanish is Tadayeshi Kohno, an assistant professor at the University of Washington. He was assisted by department chair Hank Levy, graduate student Roxana Geambasu, and undergraduate Amit Levy.

The technique, once perfected, could have wide application. Even someone with a warrant could not take back a Vanished message. Spies could send one another messages with full security, even against audit trails. So could corporate spies.

How will you use it?

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Dana Blankenhorn

About Dana Blankenhorn

Dana Blankenhorn was a contributing editor for SmartPlanet from 2009 to 2010.

Dana Blankenhorn

Dana Blankenhorn

Contributing Editor

Dana Blankenhorn has written for the Chicago Tribune, Advertising Age's "NetMarketing" supplement and founded the Interactive Age Daily for CMP Media. He holds degrees from Rice and Northwestern universities. He is based in Atlanta.

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Dana Blankenhorn

Dana Blankenhorn

Dana Blankenhorn has been a technology reporter since 1982, a business reporter since 1978, and a writer for as long as he can remember. His Schwab IRA has a few tech stocks in it, most notably some Intel and Applied Materials bought over 10 years ago. But the vast majority of his tiny fortune (emphasis on the word tiny) is invested in mutual funds. He presently writes for no one else but ZDNet, SmartPlanet and himself. But if you've got an opportunity let him know. If he takes the gig he"ll first add it to this disclosure page.

He writes for SmartPlanet and is not an employee of CBS.

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RE: This post will self-destruct in five minutes
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Posted by psbecerra@...
22nd Jul 2009
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