A cryptographically secure ew database with selective random access

This paper describes the design and implementation of a high security EW database based on building up a hierarchical information system employing multilevel security classifications. Users activities in each classification are authorised via Personal Identification Numbers (PINs). The information is encrypted using the Software Optimised Encryption Algorithm (SEAL) which enables random access to and decryption of records in the database as well as guaranteeing the integrity of the retrieved records. the required record is decrypted; the database as stored on the permanent media remains fully encrypted at all times providing a very high degree of database confidentiality and integrity. The application has been particularly targeted towards Electronic Warfare libraries and tests conducted to determine its utility in real-time systems.