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Short-lived signatures

Title:

Short-lived signatures

Colburn, Michael (2018) Short-lived signatures. Masters thesis, Concordia University.

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Abstract

A short-lived signature is a digital signature with one distinguishing feature: with the passage of time, the validity of the signature dissipates to the point where valid signatures are no longer distinguishable from simulated forgeries (but the signing key remains secure and reusable). This dissipation happens "naturally" after signing a message and does not require further involvement from the signer, verifi�er, or a third party. This thesis introduces several constructions built from sigma protocols and proof of work algorithms and a framework by which to evaluate future constructions. We also describe some applications of short-lived signatures and proofs in the domains of secure messaging and voting.

Divisions:Concordia University > Gina Cody School of Engineering and Computer Science > Concordia Institute for Information Systems Engineering
Item Type:Thesis (Masters)
Authors:Colburn, Michael
Institution:Concordia University
Degree Name:M.A. Sc.
Program:Information Systems Security
Date:28 August 2018
Thesis Supervisor(s):Clark, Jeremy
ID Code:984260
Deposited By: MICHAEL COLBURN
Deposited On:16 Nov 2018 16:21
Last Modified:16 Nov 2018 16:21
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