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Re: [tor-talk] Chaum Fathers Bastard Child To RubberHose ... PrivaTegrity cMix



Bryan Ford:
> Travis Biehn wrote:
>> It was surprising (to me) that Chaum should be the one to produce the first
>> of the modern 'solving the key escrow problem' algorithms. Academia has
>> been ignoring this particular problem for quite a while - I expect that
>> more proposed solutions will follow, solutions that will be more difficult
>> to prove insecureâ
> 
> Not quite true.  Although itâs not a âhot topicâ in academia, we and a few others have written a few papers exploring privacy-preserving approaches to controlled, limited data collection for law enforcement.  For example:
> 
> - âRestructuring the NSA metadata programâ: http://outsourcedbits.org/2014/03/10/restructuring-the-nsa-metadata-program/
> - âSecure protocols for accountable warrant executionâ: https://freedom-to-tinker.com/blog/felten/secure-protocols-for-accountable-warrant-execution/
> - âCatching Bandits and Only Bandits: Privacy-Preserving Intersection Warrants for Lawful Surveillanceâ: http://dedis.cs.yale.edu/dissent/papers/bandits-abs
> 
> None of these papers really suggest or call for âkey escrowâ or âbackdoorsâ, especially not against general-purpose end-to-end encryption or mobile devices.  But even so, this line of research understandably tends not to get much love either from many die-hard privacy purists. :)

https://anon.inf.tu-dresden.de/publications/KWF2006ETRICSRevocableAnonymity.pdf

is probably one, in the context of the AN.ON/JonDonym system. See as
well: http://freehaven.net/anonbib/cache/sassaman-pet2008.pdf

Georg

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