lockable trapdoor one-way function

[Peter Fairbrother]

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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