Identifier change management apparatus, identifier change management method, and identifier change management program
US12354088B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 7, 2020 |
| Grant date | Jul 8, 2025 |
| Priority date | — |
| Expiry date | Feb 3, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/56
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An identifier change management apparatus according to an embodiment includes: a distributed ledger in which an identifier change program holding a public key and a first hash value; an identifier change key input unit that receives a secret key; a hash chain management unit that holds a seed value of a hash value used in the identifier change; a transaction issuing unit that issues an identifier change transaction including a signature value of an electronic signature that has been performed using the secret key and a second hash value generated using the seed value; and a program control management unit that changes the identifier, by the identifier change program, on condition that the signature value included in the identifier change transaction is verifiable by using the public key and a value obtained by applying a hash function to the second hash value becomes the first hash value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.