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:
Sep. 03, 2024
Filed:
Jun. 17, 2019
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Hiroki Watanabe, Musashino, JP;
Shigenori Ohashi, Musashino, JP;
Tatsuro Ishida, Musashino, JP;
Shigeru Fujimura, Musashino, JP;
Atsushi Nakadaira, Musashino, JP;
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Abstract
A permission terminal generates access information for content using a content public key of the content and a user public key of a browser of the content, and registers the access information in a blockchain. The access information includes an aggregate public key generated by aggregating the content public key and the user public key, a message for the content, and a content signature obtained by signing the message with a content private key corresponding to the content public key. A browsing terminal acquires access information of requested content from a blockchain and verifies, with the aggregate public key, an aggregate signature where a user signature in which a message of the access information is signed with a user private key and the content signature of the access information are aggregated, and transmits a content request including the user signature or the aggregate signature if the verification succeeds.