Trusted Exam Marks System at IUG using XML-signature

Appropriate security mechanisms used in an application will not significantly impair system´s performance but will greatly enhance its application scope. Point-to-point security mechanisms such as SSL and TLS are good for ensuring data integrity, confidentiality and authenticity but not non-repudiation. Ensuring non-reputability of multi-signed digital documents is a primary requirement for university´s examination marks system. This paper presents a general XML schema for the signed-document and its elements to ensuring integrity, confidentiality, authenticity as well as non-repudiation. It is then used to implement an EMS system at IUG.