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