ANALYSIS OF TIME DISTANCES OF ENCRYPTION/DECRYPTION OF MEDICAL INFORMATION SYSTEMS DATABASES FILES

Abstract

In the article on the specific example the results of studies medical information systems databases files encryption/decryptiontime have been presented. The present studies are performed using the developed three fundamentally different algorithms, that include Blowfish encryption algorithm as a part.

The studies were performed using a specially developed (in the programming environment Delphi 7) computer program "Generators" (author's title) and two computers having obsolete configuration and assembled with the Intel Core 2 Duo E8400 processor and the DualCore Intel Pentium E2180 processor.

The studies have established that the encryption/decryption of files using the first developed algorithm during execution of which multiple access to the hard drive for reading/writing of 8-byte information blocks of is implemented, takes much longer time (about 10 times) than the encryption/decryption using the second and third algorithms during execution of which access to the hard drive for a file reading/writing is performed once.