[14815] in cryptography@c2.net mail archive
lockable trapdoor one-way function
daemon@ATHENA.MIT.EDU (Peter Fairbrother)
Wed Nov 26 18:22:01 2003
X-Original-To: cryptography@metzdowd.com
X-Original-To: cryptography@metzdowd.com
Date: Wed, 26 Nov 2003 20:50:44 +0000
From: Peter Fairbrother <zenadsl6186@zen.co.uk>
To: <cryptography@metzdowd.com>
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
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