General purpose (open) and application-specific (closed) PKIs are two main categories of PKI that support a variety of cryptographic operations for providing secure environment. SSL/TLS and SET are two distinct security protocols utilising these PKI categories for securing e-commerce transactions. While the former protocol categorised as a general purpose PKI has been playing an important role ...

Public Key Infrastructure around the world has had mixed success over the past ten years. Some jurisdictions (like Australia and the USA) have been left largely disillusioned by the hype, while others (like China and Korea) see PKI as indispensable infrastructure for e-business. The typical situation around Asia is that PKI is highly desirable but difficult and/ or costly to implement. Regulato...

Abstract 
 In a bid to implement the Electronic Transactions Act 2015, Tanzania initiated adoption of National Public Key infrastructure (PKI) framework. However, plan has not been executed as expected because certain gaps and ambiguities in laws. This article examines existing laws providing for legal validity, admissibility enforceability electronic signatures especially using PKI; ident...

This paper describes a security middleware for enhancing the interoperability of public key infrastructure (PKI). Security is a key concern in e-commerce and is especially critical in cross-enterprise transactions. Public key cryptography is widely accepted as an important mechanism for addressing the security needs of e-commerce transactions because of its ability to implement nonrepudiation. ...

In this paper a simulation analysis of certain trust models (complex PKI architectures) with regard to the security support of B2B applications on the Internet is presented. The objective of such an analysis has been the choice of the most efficient PKI architecture and a solution of the cryptographic interoperability problem. A simulation model of protected B2B e-commerce has also been present...