Nordic Semiconductor has been granted a patent for an integrated-circuit device with a physical-unclonable-function (PUF) unit, a secure module, and an interconnect system. The device securely transfers a PUF key from the PUF unit to the secure module using a unique method involving random values and bitwise XOR operations. GlobalData’s report on Nordic Semiconductor gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Nordic Semiconductor, M2M communication interfaces was a key innovation area identified from patents. Nordic Semiconductor's grant share as of April 2024 was 32%. Grant share is based on the ratio of number of grants to total number of patents.
Puf key transfer between puf unit and secure module
A recently granted patent (Publication Number: US11968306B2) discloses an integrated-circuit device that includes a physical-unclonable-function (PUF) unit, a secure module, and an interconnect system. The secure module is equipped with a memory for storing the unmasked PUF key and can perform cryptographic operations using a hardware cryptographic engine or processor. Additionally, the secure module generates random values and sends them to the PUF unit, ensuring secure key transfer within the device.
Furthermore, the integrated-circuit device prevents unauthorized access during key transfer processes and boot-up sequences, safeguarding against debugger interference and unauthorized software execution. The method of operating the device involves the secure module generating random values, sending them to the PUF unit, and performing XOR operations to transfer and unmask the PUF key securely. This innovative approach enhances the security of the integrated-circuit device, particularly in preventing unauthorized access and ensuring the integrity of cryptographic operations within the system.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
