Extended Design and Implementation of Certificate Authorities

The most important security services of Public Key Infrastructure (PKI) such as e authentication, integrity, confidentiality and non- repudiation enables its clients to maintain a level of trust. It enables clients to exchange information over unsecure public network such as Internet. PKI proves the identity of an individual or an organization via digital certificates which binds information of client and public key. Public keys are store in public key directory. A PKI system works by having a Certificate Authority (CA) that is responsible for issuing and revoking certificates. Certificates are basic source of trust in online transactions. The aim of this paper is to design and implement a CA that can create and manage public key certificates. We have proposed a trusted hierarchical trust model which is extension of work done by Janabi et al.. [4]. The proposed system is designed and implemented using JAVA programming language, MYSQL database server and Apache web server.