XML (Extensible Markup Language) is used to store the data and exchange the data across the network. In the college or university student records contains very sensitive information like grade of student, address, roll no etc., accessing of these records are done only by some authenticate person. Suppose there are several branches in college if some authority like HOD of any department wants to see the information of their respective branch student than it should includes some security measure like that person should be authorized, or data should be confidential. In this paper, we are using XML encryption to maintain the security over the XML document while they are transmitting over unsecure web channel like internet.