The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 14, 2021
Filed:
Nov. 30, 2018
Thales Dis France SA, Meudon, FR;
Mariya Georgieva, Meudon, FR;
Aline Gouget, Meudon, FR;
THALES DIS FRANCE SA, Meudon, FR;
Abstract
Secure cryptography operations on a white-box cryptography device. Receiving a first message. Receiving a cryptographic key encrypted using a homomorphic encryption scheme. Performing a cryptographic operation, e.g., decryption or digital signature, using the encrypted cryptographic key. Performing a homorphically encrypted tracer calculation that traces the performance of the cryptography operations on the white-box cryptography device thereby allowing verification that all steps of the cryptography operation has been performed without external manipulation. Performing a key-exchange operation. Decrypting the key-exchange output using an alternate cryptographic key stored on the cryptographic device.