CRYPTO MODULE WITH EXTERNAL PROTECTION CIRCUIT MONITORING FUNCTION Russian patent published in 2024 - IPC G06F12/14 G06F21/70 H04L9/00 

FIELD: cryptography.

SUBSTANCE: invention relates to a cryptomodule with a function for monitoring an external protection circuit. Cryptomodule is equipped with an external protection circuit made in the form of a volatile memory installed under the protective cover and supplied with a battery, and two contacts brought to the interface connector. External protection circuit is activated by contact closure and a command to the cryptomodule to turn on the external protection circuit, wherein the crypto keys are transferred from the volatile memory of the internal protection circuit to the volatile memory of the external protection circuit, and the crypto keys in the volatile memory of the internal protection circuit are deleted. As a result, when the contacts are opened, the crypto keys are deleted from the volatile memory of the external protection circuit. Command to the cryptomodule to turn on the external protection circuit is accompanied by setting a password which is used when the external protection circuit is disconnected.

EFFECT: high level of protection of the master device, into which the cryptomodule is installed, from unauthorized access.

3 cl, 4 dwg, 1 tbl