Subject：Digital signatures. ; Computer Science. ; Data Encryption. ; Data Structures, Cryptology and Information Theory. ; Computer Communication Networks. ; Computer Systems Organization and Communication Networks. ; Coding and Information Theory. ; Communications Engineering, Networks.
Subject：Electronic data processing|Distributed processing ; Mobile computing ; Wireless communication systems ; Computer networks ; Computer Science. ; Computer Communication Networks. ; Computer Systems Organization and Communication Networks. ; Data Encryption. ; Systems and Data Security. ; System Performance and Evaluation. ; Algorithm Analysis and Problem Complexity.
Subject：Internet in public administration ; Electronic commerce ; Business|Data processing ; Computer Science. ; e-Commerce/e-business. ; Management of Computing and Information Systems. ; Computers and Society. ; Computer Communication Networks. ; Information Systems Applications (incl.Internet) ; Data Encryption.
Subject：Computer networks|Security measures|Economic aspects ; Data encryption (Computer science)|Economic aspects ; Electronic commerce|Security measures ; Computers|Access control|Economic aspects ; Computer Science. ; Systems and Data Security. ; Economics/Management Science, general. ; Computer Communication Networks. ; Data Structures, Cryptology and Information Theory. ; Computer Systems Organization and Communication Networks.
Subject：Computer security ; Sensor networks ; Software engineering ; Computer Science. ; Computer Communication Networks. ; Data Encryption. ; Data Structures, Cryptology and Information Theory. ; Math Applications in Computer Science. ; Models and Principles. ; Software Engineering/Programming and Operating Systems.
Subject：Information technology|Moral and ethical aspects. ; Information technology|Social aspects. ; Computers and civilization. ; Information society. ; Computer Science. ; Information Systems Applications (incl.Internet) ; Data Encryption. ; Computers and Society. ; User Interfaces and Human Computer Interaction. ; Social Sciences, general. ; Philosophy of Technology.
