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Providing transparent accountability for electronic currencies

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If you have a question about this talk, please contact Gurchetan Grewal.

Privacy is a core human need, but society sometimes has the requirement to do targeted, proportionate investigations in order to provide security. To reconcile individual privacy and societal security, we develop an electronic currency which simultaneously provides quantifiable privacy guarantees to citizens, and allows law enforcement agencies unfettered access to payment data in order to determine the income of any individual or organisation. We prove both anonymity properties and accountability properties for the protocol, using a variant of labelled bisimulation in the applied pi calculus.

This talk is part of the Computer Security Seminars series.

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