US 12,245,024 B2
Method and apparatus for performing UWB secure ranging
Sehee Han, Gyeonggi-do (KR); and Sungkyu Cho, Gyeonggi-do (KR)
Assigned to Samsung Electronics Co., Ltd, (KR)
Filed by Samsung Electronics Co., Ltd., Gyeonggi-do (KR)
Filed on May 17, 2022, as Appl. No. 17/746,316.
Claims priority of application No. 10-2021-0063701 (KR), filed on May 17, 2021.
Prior Publication US 2022/0369103 A1, Nov. 17, 2022
Int. Cl. H04W 12/03 (2021.01); H04B 1/7163 (2011.01); H04L 9/32 (2006.01)
CPC H04W 12/03 (2021.01) [H04B 1/71632 (2013.01); H04L 9/3263 (2013.01); H04B 2201/71634 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method for performing a secure ranging by a first ultra-wide band (UWB) device, the method comprising:
obtaining, from a UWB sub-system of the first UWB device, first encryption data including a symmetric key encrypted with a public key of a secure application of the first UWB device;
transferring the first encryption data to the secure application;
obtaining, from the secure application, second encryption data including a ranging data set (RDS) encrypted with the symmetric key;
transferring the second encryption data to the UWB sub-system, and
performing the secure ranging with a second UWB device based on the second encryption data,
wherein the symmetric key is generated and encrypted by the UWB sub-system,
wherein the RDS includes a ranging session key used to secure an UWB ranging session,
wherein the secure application is included in a trusted execution environment (TEE) area,
wherein the public key is generated by the secure application and transferred to the UWB sub-system via a certificate of the secure application, and
wherein the certificate of the secure application is stored in the UWB sub-system.