On Sun, Oct 13, 2002 at 06:08:56PM +0200, Paul Gillingwater wrote: > With all the discussion on validating timestamps, I was thinking about > a cryptographic approach to signing data in such a way that the time > it was signed could be validated. > Does anyone know if there is a standard for this? There is no standard for this -- timeline entanglement is still a research topic. A fairly recent paper on the subject was published in usenix security '02 -- if you are interested in providing validated timestamps, this would be a good paper to start with. (Especially since it has a bibliography. :) Secure History Preservation through Timeline Entanglement Petros Maniatis and Mary Baker, Computer Science Department, Stanford University http://www.usenix.org/events/sec02/maniatis.html (It may be available for non-usenix members elsewhere.) -- Outlook users: please do not put my email address in your address book. This way, when you get infected with a virus, my address won't appear in the From: header. Thanks.
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