Usability Assessment on Symmetric Cryptography Learning Module

Teaching information security requires lecturer to introduce several tools to encourage students performing hands on practices in better way in order to enhance their understanding. In this study, a novel learning module as a tool for student to perform symmetric cryptography exercises is introduced. It is called NgeXTEA, a novel learning module to describe how a simple yet powerful symmetric cryptography called Extended Tiny Encryption Algorithm (XTEA) works. The main objective of the study is to conduct assessment from usability point of view on NgeXTEA learning module using System Usability Scale (SUS) method. Finally, SUS based assessment indicated that the learning module is considered useful to enhance students' understanding and skills on the given topic.