INFORMATION AUTHENTICATING METHOD Russian patent published in 2001 - IPC

FIELD: information authenticating means; marking objects. SUBSTANCE: paper medium is used as object and entire alphanumeric information or its part, as check information. In addition, open electronic numeric-signature check key is converted into bar code which is also applied to paper medium and used for authenticating electronic numeric signature; if electronic numeric signature is authentic, bar-code check information is visually compared with alphanumeric information applied to paper medium and results of comparison are used to decide if alphanumeric information on paper medium is authentic or not. EFFECT: improved reliability of authenticating alphanumeric information; facilitated check procedure. 3 cl, 5 dwg