SYSTEM OF PROTECTIVE MARKING AND DOCUMENT VERIFICATION Russian patent published in 2002 - IPC

FIELD: marking and verifying genuineness of notarial, financial, right-establishing documents and securities. SUBSTANCE: given system includes protective marking subsystem and verification subsystem. Protective marking subsystem has unit 1 to input information, computer terminal 2, unit 3 deriving verifying fragments, unit 4 forming electron digital signature, secret key carrier 5, encoding unit 6, printing unit 7, marked document 8. Verification subsystem includes unit 9 reading and converting line code, extractor 10 of verifying information, unit 11 deriving electron digital signature, former 12 of open key, unit 13 verifying digital electron digital signature, comparator 14 and display 15. Thanks to new package of signs realizing cryptographic algorithm of formation and verification of electron digital signature high degree of protection of information presented in document is achieved. EFFECT: high degree of protection of information presented in document. 2 cl, 7 dwg