A controllable anonymous proxy signature scheme with revocation

  • Authors:
  • Jianhong Zhang;Jilin Wang

  • Affiliations:
  • College of Science, North China University of Technology, Beijing, P.R. China;Zhejiang University of Finance & Economy, Hangzhou, China

  • Venue:
  • ICIC'10 Proceedings of the Advanced intelligent computing theories and applications, and 6th international conference on Intelligent computing
  • Year:
  • 2010

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Abstract

Anonymous authentication is an important means of authorizing a user without identification. It serves as a breakthrough to enhance the privacy of the user and yet preserve the security of the system. Due to limited bandwidth, permanent connections between customers and servers are unnecessary and impracticable. To ensure service availability to the customers distributed in the networks, the server must delegate his rights to other parties in the systems. In the paper, to realize anonymous authentication and delegating right, we put forth a new primitive: controllable anonymous proxy signature with revocation, by combining proxy signature, ring signature and the proposed new knowledge-proof-signauture technology. Then we give formal definitions of security and show them to be satisfiable by constructing an instantiation under RSA assumption proven secure in the random oracle model.