Title:
MANAGEMENT DEVICE AND PROGRAM
Document Type and Number:
WIPO Patent Application WO/2022/091415
Kind Code:
A1
Abstract:
The present invention provides a management device and a program with which it is possible to easily discriminate between the alteration and correction of an electronic document. A management device 1 for managing a user's electronic documents, the management device 1 comprising: a document acquisition unit 11 for acquiring an electronic document; an indication acquisition unit 12 for acquiring an indication to create a signature for the acquired electronic document; a generation unit 14 for generating unique text information on the basis of the acquired indication to create; a write unit 15 for writing signature information that includes the generated text information and time information that includes a signing time-of-day into the electronic document; a calculation unit 18 for calculating the hash value of the electronic document; a holding unit 16 for holding with respect to the signature information, time information and hash value in a management file that manages the electronic document; and an output unit 19 for outputting the electronic document that includes the written-in signature information and time information.
Inventors:
OGURA TAKASHI (JP)
Application Number:
PCT/JP2020/041090
Publication Date:
May 05, 2022
Filing Date:
November 02, 2020
Export Citation:
Assignee:
OGURA TAKASHI (JP)
International Classes:
G06F21/64
Domestic Patent References:
| WO2016043197A1 | 2016-03-24 |
Foreign References:
| JP2007027920A | 2007-02-01 | |||
| JPH0883045A | 1996-03-26 | |||
| JP2004326572A | 2004-11-18 | |||
| JP2009015445A | 2009-01-22 | |||
| JP2018067807A | 2018-04-26 |
Attorney, Agent or Firm:
SAITO Takuya et al. (JP)
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