This dissertation was written as a part of the MSc in ICT Systems at the International Hellenic University. Electronic communication is a vast piece of modern technology which is constantly evolving and creating more and more, problems. For instance, in e-commerce and more generally to electronic communications, one of the biggest issues is the security of transactions. The information security issues are contemporary problems faced by all systems and directly affect the IT infrastructure. The issues of information security in virtually all areas of applications such as: corporations - organizations, the government and individual privacy, can only be ensured with information security sys-tems and cryptography.
The goal of this current dissertation is to develop in an existing application an e-learning tool for education in cryptography. In Chapter 1, security, cryptography and e-learning are introduced and defined. In Chapter 2, a presentation of the history of cryp-tography is made from the ancient times until today. In Chapter 3, the problems and dif-ficulties that appeared over the years in the sector of cryptography are discussed. In Chapter 4, a detailed description of the development of the e-learning tool upon an ex-isting instant messaging application is presented. Lastly, in Chapter 5, the results of the application are concluded, how helpful the application is in the education sector in un-derstanding the different methods of cryptography and if it can be extended to other sec-tors e.g. enterprise (employee training against security threats).
Initially, I would like to thank my supervisor, Assistant Professor Vasilis Katos, for giving me the opportunity to work with the specific and interesting subject. His support, guidance and patience played a significant role to the development and completion of this thesis. Special thanks to Assistant Professor and PhD candidate, Konstantinos Mo-kos, for his valuable assistance and counseling on the development of the e-learning tool for education in cryptography. Finally, I am deeply grateful for the support of my family during the research and writing of this dissertation.
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