Disaster coverable PKI model utilizing the existing PKI structure

Man Kim Bo, Young Choi Kyu, Dong Hoon Lee

Research output: Contribution to journalArticle

2 Citations (Scopus)


A Public Key Infrastructure (PKI) using a certificate has already been widely used in a variety of fields for the provision of security service. Accordingly a Certification Authority (CA) that issues a certificate must securely construct a Certification Authority System and manage it. It is significantly important for a CA to ensure its service to continue to operate properly by preparing for any disaster caused by a CA's private key compromise no matter what the cause is. In this paper, we provide the definitions of PKI disaster recovery and PKI business continuity, which are more clear and specific than ever before. We also present three requirements for a PKI model preparing for a disaster. Then we propose a PKI model that ensures business continuity in the event of a disaster in which a CA key is exposed. It is easily applied to the existing PKI structure. We stress that the proposed PKI model in this paper is the first to ensure both applicability to the existing models and business continuity in the event of a disaster.

Original languageEnglish
Pages (from-to)537-545
Number of pages9
JournalLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume4277 LNCS - I
Publication statusPublished - 2006 Dec 15



  • Business continuity
  • Forward secure signature scheme
  • PKI model
  • Public key infrastructure

ASJC Scopus subject areas

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

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