Data encryption (Computer science) Computer science 386 Computer Communication Networks 309 Data protection 278 Information Systems 274 Computer software 184 Security measures 146 Computer security 142 Coding theory 109 Data structures (Computer science) 105 Computer networks 96 Cryptography 93 Software engineering 62 Computational complexity 61 Operating systems (Computers) 53 Telecommunication 40 Information storage and retrieval systems 37 Computers 35 Access control 33 Computer network architectures 33 Multimedia systems 31 Data processing 24 Database management 21 Electronic commerce 20 Computer vision 18 Internet 17 Public key cryptography 17 Mathematics 16 Biometrics 13 Field programmable gate arrays 13