Slovak University of Technology, Bratislava
Faculty of Electrical Engineering and Information Technology
Degree Course: INFORMATICS
Author: Bc. Pavol Markovič
Diploma thesis: Data security in database systems
Supervisor: Ing. Peter Matuška
Database systems have made a long journey from mainframe's computing halls towards common households, still the data security is one of today's most investigated problems. For a long time it was data access control which was taken much of the researcher's interest. But now with comming small single-user systems we need solution for problems which have been only partially solved in the past. This work tries to find simple but secure data encryption method which should be implemented in one of the small Java-based database systems - HSQLDB. For this task, the field encryption was chosen with respect to further research of component-based security. Both cryptanalysis and performance of implemented system are discussed here.