INITIALIZATION, MAINTENANCE, RENEWAL AND RESTORATION OF PROTECTED MODE OF OPERATION OF INTEGRATED SYSTEM, USING DEVICE FOR CONTROLLING ACCESS TO DATA

摘要

FIELD: technology for processing requests and data transfer within limits of integrated system. ^ SUBSTANCE: method for providing protected operation mode for integrated system with several software levels includes decryption of initialization code, authentication of software of next level and limiting capacity of software of this next level for changing working characteristic of system. Method for initialization of protected operation mode of aforementioned system includes generation of at least one key, loading of starting code, repeating of system initialization. Method for transferring data includes encryption of data by means of first set of keys, decryption, repeating of encryption with usage of second set of keys, change of at least one working characteristic, connected to device for controlling access to data. Method for restoring functionality of integrated system includes blocking access to protected code and data present in the system and providing full restoration of functionality of this system. ^ EFFECT: expanded functional capabilities. ^ 4 cl, 16 dwg