lockable trapdoor one-way function

From: Peter Fairbrother (zenadsl6186_at_zen.co.uk)
Date: 11/26/03 

Date: Wed, 26 Nov 2003 20:30:40 +0000

Does anyone know of a trapdoor one-way function whose trapdoor can be locked
after use?

It can be done with secure hardware and/or distributed trust, just delete
the trapdoor key, and prove (somehow?) you've deleted it.

It looks hard to do in "trust-the-math-only" mode... 

-- 
Peter Fairbrother

Relevant Pages

  • Re: lockable trapdoor one-way function
    ... > Does anyone know of a trapdoor one-way function whose trapdoor can be ... > It can be done with secure hardware and/or distributed trust, ... party alone has the entire secret trap door data. ...
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  • Re: lockable trapdoor one-way function
    ... Peter Fairbrother writes: ... > Does anyone know of a trapdoor one-way function whose trapdoor can be locked ... using the trapdoor means using a secret parameter that it has. ... Without secure hardware, how do you prove you don't know something? ...
    (sci.crypt)