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Posted by JacobAppelbaum on Thu 14 Sep 2006 at 00:26
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I needed a method for sharing a secret that required multiple agents to coordinate before the secret could be recovered. This is useful for encrypting keys used in critical backups. I decided to use an implementation of Shamir's Secret Splitting Scheme (The S in RSA).

Currently I'm using a program called 'ssss' ( http://point-at-infinity.org/ssss/ ) to do secret sharing.

This program is also a Debian package in unstable (http://packages.debian.org/unstable/utils/ssss).

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