Patent ID: 11968306
Assignee: NORDIC SEMICONDUCTOR ASA
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. An integrated-circuit device comprising:
a physical-unclonable-function (PUF) unit;
a secure module;
an interconnect system communicatively coupled to the PUF unit and to the secure module,, wherein the integrated-circuit device is configured for transferring a PUF key from the PUF unit to the secure module, over the interconnect system, by:
the secure module generating a random value;
the secure module sending the random value to the PUF unit;
the PUF unit performing a bitwise XOR operation between the received random value and the PUF key, to generate a masked value;
the PUF unit transferring the masked value over the interconnect system to the secure module; and
the secure module unmasking the PUF key by performing a bitwise XOR operation between the received masked value and the random value.