METHOD OF PROTECTING DATA IN A COMPUTING SYSTEM Russian patent published in 2020 - IPC G06F21/62 

FIELD: data protection.

SUBSTANCE: method of protecting data in a computer system involves generating a key for encrypting data in a secure file storage area; calculating a key hash value; generating metadata containing hash function value; storing metadata; encrypting data in files of secure file storage area using key; if a user application request is received, including a key, to read file data from the secure file storage area, then using the control application, obtaining a key for accessing the secure storage area of files; calculating a key hash value; if key hash function value is equal to key hash function value stored in metadata, then availability of application access is determined, otherwise – absence of access; if user application does not have access, data is returned without decryption; if the user application has access, then decrypting the data using the key; returning the decrypted data to the user application.

EFFECT: improved protection against unauthorized access to files inside the protected file storage area.

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