Cryptology ePrint Archive: Report 2012/568

On Transaction Pseudonyms with Implicit Attributes

Stefan G. Weber

Abstract: Transaction pseudonyms with implicit attributes are a novel approach to multilevel linkable transaction pseudonyms. We extend earlier work of Juels and Pappu on reencryption-based transaction pseudonyms, by developing new mechanisms for controlled pseudonym linkability. This includes mechanisms for cooperative, stepwise re-identi cation as well as individual authentication of pseudonyms. Our proposal makes use of efficient techniques from the area of secure multiparty computation and cryptographically secure PRNGs.

Category / Keywords: Pseudonymity, Privacy Protection, Accountability, Secure Multiparty Computation

Date: received 7 Oct 2012, last revised 7 Oct 2012

Contact author: StefanGeorgWeber at gmail com

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Note: Added keywords

Version: 20121007:202639 (All versions of this report)

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