PROTECTED STORAGE DEVICE Russian patent published in 2022 - IPC G06F21/56 G06F21/62 G06F21/78 

FIELD: computer security.

SUBSTANCE: system contains the first hardware processor and a protected storage device (hereinafter – SD). The protected SD contains the second hardware processor and a non-volatile SD element. The first hardware processor is configured so that: when the software running on the first hardware processor detects a request to save a data packet in the SD element, this processor encrypts the specified data packet, transmits an initial SD access request to a SD interface, wherein this initial SD access request contains an encrypted data packet, generates a simulated SD access request in accordance with a SD transfer protocol, which contains at least part of a cryptographic key, and transmits this simulated SD access request to the SD interface. The second hardware processor is configured so that: after receiving a message through the SD interface, the processor determines whether the message contains a simulated SD access request, if the message contains such a simulated SD access request, the processor determines a cryptographic key in accordance with the simulated SD access request, after receiving the initial SD access request, the processor uses the cryptographic key and decrypts the data packet, after which it determines whether the decrypted data packet contains malware.

EFFECT: increase in the reliability of data protection.

21 cl, 8 dwg