Data encryption (Computer science) 47 Cryptography 19 Computer security 15 Security measures 15 Data protection 14 Dissertations 9 Dissertations, Academic 8 Data processing 7 Access control 5 Computer networks 5 Computers 4 Algorithm 3 Computer algorithms 3 Digital watermarking 3 Image processing 3 Medical records 3 Multimedia systems 3 Cloud computing 2 Confidential communications 2 Digital images 2 Digital media 2 Digital signatures 2 Embedded computer systems 2 Mathematical models 2 Mobile computing 2 Standards 2 Technological innovations 2 Video compression 2 Adaptive computing systems 1 Algebra 1