Patent RU-2608710-C1 (RU)
Title: Access authorization method and device for its implementation
Inventor: FOMCHENKO VIKTOR NIKOLAEVICH
IPC: E05B47/00
Filed: 2015-12-16
Granted: 2017-01-23
Abstract: FIELD: computer engineering. 
     SUBSTANCE: invention relates to computer engineering, in particular, to means of information cryptographic transformation, as well as to various objects protection equipment from unauthorized access and can be used for authorized access to storages, safe deposits and potentially hazardous technological processes. Access authorization method consists in fact, that to each electronic lock individual number is previously assigned and recorded. At preparatory stage common authentication key is assigned, generating electronic locks individual authentication keys by individual number cryptographical transformation and common authentication key for information pairs producing, each of which has individual number and individual authentication key, latter of which is recorded into corresponding electronic lock, and information pairs are recorded into control device crypto transformer memory, then, assigning common code and recording it into electronic locks and control device, at operation stage performing common authentication key input into control device for electronic locks individual authentication keys generation by individual numbers cryptographical transformation using common authentication key or performing search for electronic locks individual authentication keys by their individual number in control device information pairs, supplying number of electronic lock triggering values into control device non linear substitutions unit for code value conversion, which result is used for cryptographical transformation using individual authentication key for production of individual control sending, which is transmitted for reverse cryptographical transformation in electronic lock using individual authentication key, converted value is compared with stored code value converted in non linear substitutions unit controlled by number of electronic lock triggering value, at positive comparison result generating command to actuating device. Method implementation device comprises control device of, at least, one electronic lock, including actuating device, characterized by fact, that control device includes first memory device, first non linear substitutions unit, direct crypto transformer, crypto transformer with memory, which first input is device input, output is connected to direct crypto transformer first input, which second input is connected to first non linear substitutions unit output, which first input is connected to first memory device output, electronic lock additionally includes reverse crypto transformer, second, third and fourth memory devices, second non linear substitutions unit, counter with lock actuations number memory and comparison circuit, which output is connected to actuating device input, comparator circuit first input is connected to reverse crypto transformer output, and second input is connected to second non linear substitutions unit output, which first input is connected to third memory device output, and second input is connected to counter with memory output and to first non linear substitutions unit second input, direct crypto transformer output is connected to reverse crypto transformer first input, which second input is connected to second memory device output, fourth memory device output is connected to crypto transformer with memory second input. 
     EFFECT: achieved technical result is providing of automated authorized control over electronic locks group using individual variable transmissions, including under conditions of individual locks information compromising, included into group, with considerable reduction of operation complexity, not requiring electronic locks information servicing. 
     2 cl, 1 dwg