Learner-centered design: addressing, finally, the unique needs of learners
CHI 98 Cconference Summary on Human Factors in Computing Systems
Cryptography: Theory and Practice,Second Edition
Cryptography: Theory and Practice,Second Edition
Introduction to Cryptography with Java Applets
Introduction to Cryptography with Java Applets
Visualization of cryptographic protocols with GRACE
Journal of Visual Languages and Computing
Visualizing secure Hash algorithm (SHA-1) on the web
AMT'11 Proceedings of the 7th international conference on Active media technology
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The Data Encryption Standard (DES) is a secret key encryption scheme adopted as standard in the USA in 1977. Most cryptographic courses and textbooks include DES, and its variations. Interaction and visualization are key factors supporting the learning process. We present a dynamic interactive educational system that visualizes DES, and its variations. The aim of the system is to facilitate teaching and learning DES, and its variants for undergraduate and postgraduate students. The system has been used in Ain Shams University - Faculty of Science, in the course "Cryptography". The analysis of the data emerging from the evaluation study of our system has shown that students found the system attractive and easy to use. On the whole, student interactions within the system helped them to become aware of DES, to conceptualize it, to overcome learning difficulties, and to correct themselves.