Cryptography 38 Data encryption (Computer science) 19 Security measures 12 Computer security 7 Data protection 7 Dissertations, Academic 7 Dissertations 6 Access control 5 Data processing 5 Quantum communication 5 Quantum theory 5 Computers 4 Public key cryptography 4 Algorithms 3 Computer algorithms 3 Computer networks 3 Curves, Elliptic 3 Multimedia systems 3 Ciphers 2 Digital signatures 2 Mathematical models 2 Mobile computing 2 Technological innovations 2 Telecommunication 2 Adaptive computing systems 1 Algorithm 1 Biometric identification 1 Business communication 1 Cell phones 1 Code words 1