CHIPSET FUNCTION ACTIVATION METHOD AND CHIPSET Russian patent published in 2015 - IPC G06F21/71 H04L29/06 H04L9/08 

FIELD: physics, computer engineering.

SUBSTANCE: invention relates to cryptography. A chipset function activation method includes: receiving at least one of the following elements: a segmentation key, a general purpose key and a global cryptographic algorithm selector; transmitting at least two of the following elements: an initial value, the obtained segmentation key, the general purpose key and the global cryptographic algorithm selector to a computation module, wherein the initial value, the obtained segmentation key, the general purpose key and the global cryptographic algorithm selector are provided by at least two different organisations; generating in the computation module a temporary key using one of the following elements: at least one cryptographic algorithm of the computation module and at least two elements selected from a group including the initial value, the segmentation key, the general purpose key and the global cryptographic algorithm selector; receiving an activation message using the computation module; receiving an authentication code of said message using the computation module, wherein said message authentication code is calculated using the temporary key; authenticating said received message using the message authentication code and the temporary key; if the received message is authentic, activating the corresponding chipset function; if the received message is not authentic, prohibiting activation of said corresponding chipset function.

EFFECT: effective chipset protection.

11 cl, 1 dwg