Abstract
In this paper, we describe our approach to achieve non-repudiation for World Wide Web (WWW) based transactions. We designed and implemented protocols for preparing digital signatures on the server as well as the client machine. In our design, we use the popular Pretty Good Privacy (PGP) software for preparing and verifying digital signatures. The key-contribution is the deployment of a special purpose HTTP server, called signing server, on the client machine to communicate with the WWW browser. A signing server is specialized to handle digital signatures. This paper discusses the design and implementation of the signing server protocol to achieve non-repudiation transactions in a WWW based employee information system. The technique of deploying special purpose HTTP servers on the client machine has many applications beyond this. It inter-operates with all types of browsers and is an attractive alternative to browser dependent plug-ins.
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