Method of managing digital signature, apparatus for processing digital signature, and a computer readable medium for recording program of managing digital signature
US7574605B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 17, 2002 |
| Grant date | Aug 11, 2009 |
| Priority date | — |
| Expiry date | Feb 11, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/3265
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method of managing digital signature includes the steps of preparing a signature log file storing signature log entry information, generating a new digital signature for a transmission message by reflecting, in the new digital signature, signature log entry information registered to the signature log file in the past; generating signature log entry information associated with the new digital signature and registering the signature log entry information to the signature log file; and preparing a user search file in addition to the signature log file; registering, to the user search file, user identifier information indicating a transmission destination of the transmitted digital signature and a transmission source of the received digital signature, with a correspondence established between the information, the user identifier information, and each signature log entry information in the signature log file.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.