Article View: sci.crypt
Article #1490time-release keys
From: Carl Ellison
Date: Tue, 10 Nov 1992 14:43
Date: Tue, 10 Nov 1992 14:43
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1681 bytes
For things like sealed archives (things kept secret for 30 years, for example) we depend on some human to obey the rules -- release the sealed material on time and not allow anyone to look at it early. If we were to have a radio relay station on the moon with ability to decrypt via its own RSA key (for example), we could send it a message and have the decrypted message come back precisely delayed from the time of transmission. No one could read it on its way out, so the delay meets the requirements I'd like to satisfy for sealed archives -- only the delay is a little short. We could encrypt millions of times over, using different keys, but the computation time preparing the secret might take longer than the transmission (or at least a sizeable fraction of it). Does anyone out there have an idea of how to achieve this time-release of info (probably of an encryption key rather than of a body of text) with the independence of human good behavior but a decent time interval? -- -- <<Disclaimer: All opinions expressed are my own, of course.>> -- Carl Ellison cme@sw.stratus.com -- Stratus Computer Inc. M3-2-BKW TEL: (508)460-2783 -- 55 Fairbanks Boulevard ; Marlborough MA 01752-1298 FAX: (508)624-7488
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Path: arc1-ca.pugleaf.net!sparky!uunet!zaphod.mps.ohio-state.edu!pacific.mps.ohio-state.edu!linac!att!bu.edu!transfer.stratus.com!ellisun.sw.stratus.com!cme From: cme@ellisun.sw.stratus.com (Carl Ellison) Newsgroups: sci.crypt Subject: time-release keys Message-ID: <1dohq8INNbs4@transfer.stratus.com> Date: 10 Nov 92 14:43:20 GMT Organization: Stratus Computer, Software Engineering Lines: 26 NNTP-Posting-Host: ellisun.sw.stratus.com