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:
Nov. 04, 2025
Filed:
Sep. 07, 2021
Hyundai Motor Company, Seoul, KR;
Kia Corporation, Seoul, KR;
Myongji University Industry and Academia Cooperation Foundation, Yongin-si, KR;
Min Ho Shin, Yongin-si, KR;
Hyundai Motor Company, Seoul, KR;
Kia Corporation, Seoul, KR;
Myongji University Industry and Academia Cooperation Foundation, Yongin-si, KR;
Abstract
Disclosed are a method and device for installing a certificate on the basis of encryption and decryption of a contract certificate private key for an electric vehicle communication controller. The method for installing the certificate comprises: a step in which the electric vehicle communication controller transmits, to a secondary actor, a certificate installation request message signed with a private key associated with a manufacturer's provisioning certificate; and a step of receiving, from the secondary actor, a certificate installation response message signed with a private key associated with a leaf certificate of a certificate provisioning service, wherein an encrypted private key element of the certificate installation response message stores a private key belonging to a new contract certificate which is encrypted for the electric vehicle communication controller without a trust platform module, the private key belonging to the new contract certificate is encrypted with AES-GCM-256 on the basis of an encryption key which is entered from a public key of the manufacturer's provisioning certificate and generated through an ECDH protocol, and the private key encrypted with the AES-GCM-256 is included in a ciphertext at 528-bits or 448-bits after an initial initialization vector of a contract certificate data packet.