One-time proxy signatures revisited

  • Authors:
  • Kemal Bicakci

  • Affiliations:
  • Informatics Institute, Middle East Technical University, Ankara, 06531, Turkey

  • Venue:
  • Computer Standards & Interfaces
  • Year:
  • 2007

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Abstract

Proxy signatures are useful constructions in grid computing, mobile agents and many other emerging applications. In a recent work [Huaxiong Wang and Josef Pieprzyk: Efficient One-Time Proxy Signatures. Proc. ASIACRYPT'03, LNCS 2894, Springer 2003.], Wang and Pieprzyk proposed a one-time signature scheme which allows full delegation to a proxy with an added feature that allows tracing the authorship of the signature in case of a dispute. In this paper we present a simple alternative approach that eliminates public-key cryptography in key generation, offers certainty and simplicity in the dispute resolution and avoids swallow attacks. We also introduce the concept of 1-out-of-n threshold traceable one-time signatures as an efficiency improvement.