Slovak University of Technology, Bratislava
Faculty of Electrical Engineering and Information Technology
Degree Course: INFORMATICS
Author: Bc. Barnabáš Pál
Diploma thesis: Application of the Chinese Remainder Theorem in Database Encryption
Supervisor: Mgr. Peter Rajský
December 2003

Database systems are one of the most important applications in informatics. The value of the information stored in a database can be hundred times higher than the cost of hardware and software. The loss of data could cause high losses to the owner.

This thesis deals with the implementation of an encrypted database system, in which encoding is based on the chinese remainder theorem. I have analysed the encryption algorithm for security and efficiency and proposed several methods of defense against possible attacks. I have implemented the system as an encryption layer over the Firebird database.