Date Added: Jun 2010
Public key technology and digital certificates are emerging as the preferred enablers of strong security for a wide range of e-business messaging applications. In this paper, an overview is provided for Public Key Infrastructure (PKI) and its related technologies: cryptography, digital signature, and digital certificate. Current hot topics of PKI industry such as the trust models, cross-certification, interoperability and standards are described. Commercial PKI products are introduced with a website link to a detail product comparison report. References for further study have also been provided.