Towards Preserving the Confidentiality of Information in a Local Area Network (LAN) Messaging System

Messaging system remains preeminent as themedium of official communication. The fear of confidentialitybeing breached has led many organizations in developingvarious ways in checking the excesses of unwanted users. In themessaging system designed, users are allowed to send andreceive messages with the options of either encrypting the dataor not. The Substitution Permutation Network (SPN), an AESencryption algorithm, implemented in the messaging systemmakes information sent over the network ‘useless’ whencompromised so as to reduce the damage done wheneversensitive and classified information gets to the wrong hands. Theapplication was implemented and tested and was found to be effective.