Date Added: Aug 2012
Different organizations make use of internet for intercommunication. To ensure confidentiality, integrity, authentication and non-repudiation, there is a requirement to have a secure communication system like PKI. Since, the requirement of each organization for security is different therefore they adopt different PKI policies for the purpose. The problem arises due to inoperability between the organizations due to different PKI policies. Different solutions have been suggested so far but these have made the system more complex. There is a requirement to have a comparatively simple system but providing all security services, i.e., confidentiality, integrity, authentication and non-repudiation.