Efficient revocation of security capability in certificateless public key cryptography

Hak Soo Ju, Dae Youb Kim, Dong Hoon Lee, Jong In Lim, Kilsoo Chun

Research output: Contribution to journalArticle

19 Citations (Scopus)


This paper presents the first mediated certificateless public key encryption and signature schemes. We also extend our schemes into hierarchical schemes. Our schemes does not suffer from the key escrow property that seems to be inherent in the mediated identity-based schemes. Key escrow is not always a good property for all applications because the exposure of a master key enable all the users' private keys to be leaked. Our mediated certificateless public key encryption and hierarchical schemes also support role based access control (RBAC) without the key escrow to manage the access to resources of a system. We finally describe security of our schemes and compare our schemes with the mediated identity based schemes from efficiency points of view.

Original languageEnglish
Pages (from-to)453-459
Number of pages7
JournalLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume3682 LNAI
Publication statusPublished - 2005 Dec 1


ASJC Scopus subject areas

  • Computer Science(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Theoretical Computer Science

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