Title:
DEVICE, METHOD, AND PROGRAM FOR CONFIRMING ELECTRONIC SIGNATURE
Document Type and Number:
WIPO Patent Application WO/2020/036208
Kind Code:
A1
Abstract:
The purpose of the present invention is to facilitate utilization of electronic signature. First, an apparatus 120 acquires data for signature and a signature (S501). Then, the apparatus 120 verifies the signature by determining, using a public key, whether the signature has been given by an owner of the public key (S502). The verification of the signature may be performed in a verification device (not shown) that the apparatus 120 can access, and the verification result may be returned to the apparatus 120. If the verification of the signature has been successful, the apparatus 120 overlays a predetermined seal on a document image 201 and displays the image on a display screen of the apparatus 120 (S503). In this way, the user of the apparatus 120 can visually confirm that the electronic signature has been given by someone having approval authority.
Inventors:
KOMIYAMA TAKAFUMI (JP)
Application Number:
PCT/JP2019/031998
Publication Date:
February 20, 2020
Filing Date:
August 14, 2019
Export Citation:
Assignee:
BITFLYER BLOCKCHAIN INC (JP)
International Classes:
G06F21/64; H04L9/32; G09C1/00; H04N1/387
Foreign References:
| US20160055552A1 | 2016-02-25 | |||
| JP2005045486A | 2005-02-17 | |||
| JP2005184052A | 2005-07-07 | |||
| JP2010028689A | 2010-02-04 | |||
| JPH11298469A | 1999-10-29 | |||
| JP2016192719A | 2016-11-10 | |||
| JP2006107099A | 2006-04-20 |
Other References:
See also references of EP 3840285A4
Attorney, Agent or Firm:
OTANI Kan (JP)
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