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ITU-T (1993) The Directory—Overview of Concepts, Models and Service. X.500 Series of Recommen- dations, International Telecommunications Union, Geneva.

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• TITLE: Public Key Infrastructure: A Survey

  AUTHORS: Aysha Albarqi, Ethar Alzaid, Fatimah Al Ghamdi, Somaya Asiri, Jayaprakash Kar

  KEYWORDS: Impersonating Attack, Ephemeral Key, Compromise Attack, Certificate Repository

  JOURNAL NAME: Journal of Information Security, Vol.6 No.1, January 8, 2015

  ABSTRACT: As security is essential in communications through electronic networks, development of structures providing high levels of security is needed. Public Key Infrastructure (PKI) is a way of providing security measures by implementing the means of key pairs among users. In this paper, an overview of the public key infrastructure is discussed that includes various components and operation, some well known PKIs and their comparisons. Also we discuss current implementations, risk and challenges of PKIs.