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:
Apr. 01, 2025
Filed:
Jul. 31, 2019
Nec Corporation, Tokyo, JP;
Batnyam Enkhtaivan, Tokyo, JP;
Pooja Dhomse, Tokyo, JP;
NEC CORPORATION, Tokyo, JP;
Abstract
An apparatus publishes the first verification key generated in a first secure area outside the apparatus, acquires a second verification key that is generated in a second secure area of a data requesting apparatus and published by the data requesting apparatus, signs, in the first secure area, in response to a data delivery request, delivery target data using the first signature key, transmits transmission data obtained through the signing to the data requesting apparatus, receives certification data from the data requesting apparatus, verifies a signature of the certification data using the second verification key, and transmits, when the signature of the certification data is successfully verified using the second verification key, the certification data to the data providing apparatus.