MULTICHANNEL SIGNATURE ANALYZER Russian patent published in 1998 - IPC

FIELD: computer engineering, information protection, verification of programs and data using signature analysis, information gamma encryption, protection of software against unauthorized use (by means of electronic key). SUBSTANCE: device is designed as input-output device which is connected to IBM PC. Device had input action generator, first signature generator, second signature generator, generator of pulse series control unit, OR gate 6, group of AND gates. EFFECT: increased validity of information integrity checking. 7 dwg, 1 tbl