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A new approach for delegation using hierarchical delegation tokens

  • Yun Ding
  • Patrick Horster
  • Holger Petersen
Chapter
Part of the IFIP Advances in Information and Communication Technology book series (IFIPAICT)

Abstract

In this paper we give a classification of delegation schemes into four main classes. To solve the problem with simply chained tokens in cascaded delegations we introduce the concept of hierarchical delegation tokens. To realize this concept we use the Schnorr signature scheme and self—certified public keys introduced by Girault. We describe the first approach for hierarchical key generation based on an unregarded idea of Günther and the generation of designated verifier signatures. Using these tools, we present efficient delegation schemes for the four main classes, which are efficient in generating and using delegation keys compared with other existing approaches. This is one of the few works, that combines cryptographic algorithms and protocols to benefit for the complexity and the efficiency of the resulting delegation mechanisms.

Keywords

Delegation access control distributed systems hierarchical certificates 

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Copyright information

© IFIP International Federation for Information Processing 1996

Authors and Affiliations

  • Yun Ding
    • 1
  • Patrick Horster
    • 2
  • Holger Petersen
    • 2
  1. 1.Institute of Parallel and Distributed High-Performance SystemsUniversity of StuttgartStuttgartGermany
  2. 2.Theoretical Computer Science and Information SecurityUniversity of TechnologyChemnitzGermany

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