SYSTEM AND METHOD OF CHECKING FILE EDS Russian patent published in 2019 - IPC G06F21/33 G06F21/51 

FIELD: cryptography.

SUBSTANCE: invention relates to verification of EDS file certificates. Method includes recognizing by means of verification means of EDS certificate of detected file valid, if EDS certificate is complete and certificate of certifying center issuing said EDS certificate is also valid; wherein validation of the EDS certificate is carried out using certificates from a certificate database, which stores certificates for at least two operating systems; recognizing, using the EDS check means, the detected file is valid, if the EDS certificate is valid, and the detected file is integral; valid means of validating a valid EDS certificate by a trusted method for performing a request to a database of trusted certificates; by means of the verification means, the detected file is recognized as belonging to the category of trusted files, if the electronic digital signature of the file is valid, and the EDS certificate is trusted.

EFFECT: reducing errors of the first kind when determining the category of a file transmitted over a network through a data transmission device.

5 cl, 5 dwg