Interesting People mailing list archives
Re: Vanish: Self-destructing digital data
From: David Farber <dave () farber net>
Date: Thu, 23 Jul 2009 20:34:22 -0400
Begin forwarded message: From: Tim Pozar <pozar () lns com> Date: July 23, 2009 7:14:31 PM EDT To: dave () farber net Cc: ip <ip () v2 listbox com> Subject: Re: [IP] Re: Vanish: Self-destructing digital data It is practical in a controlled environment where everyone is agreeing to the procedures of document retention. You can do that with some success within a company. Typically you want to see that documents disappear after a time frame to minimize discover costs. If everyone is working for the same goal and are trained and follow the procedures, then systems like this work. I help start up an electronic document retention company called Disappearing Inc. We had very good technology but it is a difficult sell as it is an insurance policy. Many companies don't feel they need to use it until they get involved with a court case, and then it is too late. Of course this system falls apart once documents or email goes outside of the realm where everyone is pulling for the same goal. Tim on 7/23/09 2:54 PM David Farber said the following:
Begin forwarded message: From: Bruce Schechter <bruce () schechter com> Date: July 23, 2009 5:37:18 PM EDT To: David Farber <dave () farber net> Subject: RE: Vanish: Self-destructing digital data Hi Dave, For IP, if you wish... Forgive me if this is a naïve question, but can someone please explain the use case where self-destructing data is practical, given that arecipient of the data could copy it, save it, take a "screenshot", etc.,before the bullet is fired on self-destruction? Thanks, Bruce Bruce Schechter | bruce () schechter com -----Original Message----- From: David Farber [mailto:dave () farber net] Sent: Wednesday, July 22, 2009 4:17 PM To: Ip Ip Subject: Re: Vanish: Self-destructing digital data Begin forwarded message: From: "Ed Gerck, Ph.D." <egerck () nma com> Date: July 22, 2009 12:09:03 PM EDT To: dave () farber net Cc: ip <ip () v2 listbox com> Subject: Re: [IP] Vanish: Self-destructing digital data [Dave: for IP if you wish]From: Tadayoshi Kohno <yoshi () cs washington edu> Date: July 21, 2009 1:28:00 PM EDT To: dave () farber net Subject: Vanish: Self-destructing digital data Today the New York Times reported on our "Vanish" research project on "self-destructing data": http://www.nytimes.com/2009/07/21/science/21crypto.html .Congratulations on the NYT article. However, the significant point of using a trust model that does not depend on the integrity of third parties is not new, while relying on a peer-to-peer network for "key hiding" is by itself an unsolved problem today (both technically and commercially). The free "Zmail Basic" listed in "Ten Free Services To Send Self-Destructing Emails Which Expire/Disappear Automatically After Specified Time Interval" at <http://thinkabdul.com/2007/07/25/ten-free-services-to-send-self-destructing-emails-which-expiredisappear-automatically-after-specified-time-interval/also uses a trust model that does not depend on the integrity ofthird parties but the novelty there is that keys are not stored anywhere (each dialogue party holds a part of it), and uses a system of "minority control" to allow independent destruction of the capability to reassemble the entire key. Regarding legal issues surrounding the use of any "self-destruct" technology, where certain laws do require that corporations archive e- mails and make them accessible, the same "Zmail Basic" offers a solution based on both technology and the legal control offered by the US DMCA (and similar laws internationally), allowing senders to independently control the lifetime of the information they send -- which is legally- and technically-effective. Best regards, Ed Gerck (*) I designed Zmail Basic and Premium.
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- Vanish: Self-destructing digital data David Farber (Jul 22)
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- Re: Vanish: Self-destructing digital data David Farber (Jul 22)
- Re: Vanish: Self-destructing digital data David Farber (Jul 23)
- Re: Vanish: Self-destructing digital data David Farber (Jul 23)
- Re: Vanish: Self-destructing digital data David Farber (Jul 23)
- Re: Vanish: Self-destructing digital data David Farber (Jul 23)
- Re: Vanish: Self-destructing digital data David Farber (Jul 23)