Patent ID: 11921834
Assignee: STMICROELECTRONICS (ROUSSET) SAS
Field: Computer technology (Electrical engineering)
Classification: CPC G  B | IPC B  G

Claim 0:
1. A method, comprising:
receiving, by a first electronic circuit from a second electronic circuit, a request to generate a first digital signature, the request identifying code executable by the first electronic circuit;
generating the first digital signature using the first electronic circuit, the generating of the first digital signature including combining digital states of a plurality of electric nodes distributed within the first electronic circuit according to a topography, wherein the first digital signature is calculated in parallel with execution of the code by the first electronic circuit, the execution of the code influencing the digital states of all or part of the plurality of electric nodes of the first electronic circuit;
generating a second digital signature using the second electronic circuit, the generating of the second digital signature including combining digital states of a plurality of electric nodes distributed within the second electronic circuit according to the topography;
comparing the first digital signature to the second digital signature; and
authenticating the first electronic circuit based on the comparison of the first digital signature to the second digital signature.