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:
May. 20, 2025
Filed:
Oct. 07, 2020
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Tokyo, JP;
Abstract
An identifier change management apparatus according to one embodiment includes: a key management unit configured to manage a group of private keys including a first private key; a message input unit configured to receive a message; a transaction issuing unit configured to issue an identifier change transaction including a hash value of the message and a first signature value generated from the first private key; a distributed ledger in which an identifier change program is registered, the identifier change program holding a pairing public key used when the identifier is changed and a second signature value; and a program control management unit configured to calculate a pairing signature value by the first and second signature values by the identifier change program and change the identifier on condition that the pairing signature value, the pairing public key, and the hash value satisfy an equation using a predetermined pairing function.