Information theory Data structures (Computer science) 521 Data Structures and Information Theory 520 Coding theory 370 Coding and Information Theory 360 Cryptography 306 Cryptology 303 Data encryption (Computer science) 303 Computer networks  297 Computer Communication Networks 279 Data and Information Security 206 Data protection 206 Computer science-Mathematics 164 Database management 149 Database Management 148 Algorithms 144 Application software 144 Computer and Information Systems Applications 142 Computer science 135 Théorie de l'information 116 Information storage and retrieval systems 100 Information Storage and Retrieval 99 Discrete mathematics 96 Artificial intelligence 93 Information Theory 92 Artificial Intelligence 91 Telecommunication 87 Discrete Mathematics in Computer Science 85 Theory of Computation 84 Communications Engineering, Networks 83