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:
Jan. 14, 2020
Filed:
Oct. 19, 2018
Lg Electronics, Inc., Seoul, KR;
University of São Paulo, São Paulo, BR;
Marcos A. Simplicio, Jr., São Paulo, BR;
Eduardo Lopes Cominetti, São Paulo, BR;
Harsh Kupwade Patil, Fremont, CA (US);
Jefferson E. Ricardini Fernandez, São Paulo, BR;
Marcos Vinicius M. Silva, São Paulo, BR;
LG ELECTRONICS, INC., Yeoui-Daero, Yeongeungpo-Gu, Seoul, KR;
UNIVERSITY OF SAO PAULO, Sao Paulo, BR;
Abstract
Pseudonym digital certificates () are generated for devices () by a Pseudonym Certificate Authority (PCA), which communicates with devices via another entity—registration authority (RA)—so that the PCA and RA cannot associate certificates with devices. Each certificate is associated with a public signature key, and with a public encryption key used by PCA to encrypt the certificate to hide it from the RA. Both keys are derived by PCA from a single key. For example, the signature key can be derived from the public encryption key rather than generated independently. However, high security is obtained even when the PCA does not sign the encrypted certificate. Reduced bandwidth and computational costs are obtained as a result. Other embodiments are also provided.
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