US 12,192,348 B2
Key management in an integrated circuit
Hans Aschauer, Munich (DE); Rainer Falk, Poing (DE); Christian Peter Feist, Munich (DE); Steffen Fries, Baldham (DE); Aliza Maftun, Munich (DE); Hermann Seuschek, Munich (DE); and Thomas Zeschg, Munich (DE)
Assigned to Siemens Aktiengesellschaft, Munich (DE)
Appl. No. 17/432,153
Filed by Siemens Aktiengesellschaft, Munich (DE)
PCT Filed Feb. 14, 2020, PCT No. PCT/EP2020/053900
§ 371(c)(1), (2) Date Aug. 19, 2021,
PCT Pub. No. WO2020/169470, PCT Pub. Date Aug. 27, 2020.
Claims priority of application No. 19158503 (EP), filed on Feb. 21, 2019.
Prior Publication US 2022/0191010 A1, Jun. 16, 2022
Int. Cl. H04L 9/08 (2006.01)
CPC H04L 9/088 (2013.01) 19 Claims
OG exemplary drawing
 
1. A method for key management in a field-programmable integrated part of an integrated circuit, the method comprising:
loading a hardware configuration for the field-programmable integrated part into the field-programmable integrated part, wherein the hardware configuration comprises a key derivation functionality; and
deriving, by operation of the hardware configuration in the field-programmable integrated part using the key derivation functionality, a cryptographic key based on information provided in the field-programmable integrated part,
wherein the information in the field-programmable integrated part comprises a fingerprint of a bitstream of the hardware configuration.