IP Library Granted Patent US 12,470,394
Granted Patent B2
US 12,470,394 · App. 18/174,540 · Granted Nov 11, 2025

Electronic approval system, electronic approval server, and computer-readable storage medium

Inventor: Kiyoshi Toshimitsu (Tokyo, JP)
Assignee: Kabushiki Kaisha Toshiba
H04L9/3231H04L9/0825H04L9/0869
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Quick Facts
Patent No.
US 12,470,394
App. No.
18/174,540
Granted
Nov 11, 2025
Kind
B2
Abstract

According to an embodiment, an electronic approval system comprising at least one electronic approval device and an electronic approval server. The electronic approval device includes a biometric authentication unit and a security chip. The biometric authentication unit performs biometric authentication. The security chip generates reliability confirmation information using a private key stored in advance if a result of the biometric authentication is normal, and transmits the reliability confirmation information to the electronic approval server via the information processing device. The electronic approval server includes a processor. The processor stores an electronic approval record indicating that approval has been successfully performed in the electronic approval device based on a public key corresponding to the private key and the reliability confirmation information.

Claims (36)

1 . An electronic approval system comprising at least one electronic approval device and an electronic approval server,

the electronic approval device including:

a first connector which communicates with the electronic approval server via an information processing device;

a biosensor which performs biometric authentication; and

a security chip which generates reliability confirmation information using a private key stored in advance if a result of the biometric authentication is normal, and which transmits the reliability confirmation information to the electronic approval server via the information processing device, and

the electronic approval server including:

a second connector which communicates with the electronic approval device via the information processing device; and

a processor which stores an electronic approval record indicating that approval has been successfully performed in the electronic approval device based on a public key corresponding to the private key and the reliability confirmation information,

wherein the processor stores the electronic approval record based on the reliability confirmation information generated in a plurality of electronic approval devices in which different private keys are set in association with the electronic approval record, and a public key corresponding to the private key for each of the electronic approval devices.

2 . The electronic approval system of claim 1 , wherein the processor stores the electronic approval record if approval is successfully performed in all of the at least one electronic approval devices associated with the electronic approval record.

3 . The electronic approval system of claim 1 , wherein:

the electronic approval record is an electronic imprint image; and

the processor stores the electronic approval record by inserting the electronic imprint image into document data.

4 . The electronic approval system of claim 1 , wherein the processor:

transmits to an external server the reliability confirmation information received from the at least one electronic approval device and electronic approval record identification information for identifying the electronic approval record; and

receives from the external server information indicating whether approval in the at least one electronic approval device has been successfully performed.

5 . The electronic approval system of claim 1 , wherein:

the electronic approval record is an electronic signature image; and

the processor stores the electronic approval record by inserting the electronic signature image into document data.

6 . The electronic approval system of claim 1 , wherein:

the reliability confirmation information is a random number and encrypted data in which the random number is encrypted by a private key; and

the processor stores the electronic approval record if the encrypted data decrypted by the public key matches the random number.

7 . An electronic approval server comprising:

a connector that communicates via an information processing device and an electronic approval device including a biosensor which performs biometric authentication and a security chip which generates reliability confirmation information using a private key stored in advance when a result of the biometric authentication is normal; and

a processor which stores an electronic approval record indicating that approval in the electronic approval device has been successfully executed based on a public key corresponding to the private key and the reliability confirmation information,

wherein the processor stores the electronic approval record based on the reliability confirmation information generated in a plurality of electronic approval devices in which different private keys are set in association with the electronic approval record, and a public key corresponding to the private key for each of the electronic approval devices.

8 . A computer-readable storage medium storing an electronic approval program,

the computer-readable storage medium causing an electronic approval device to:

communicate with an electronic approval server via an information processing device;

perform biometric authentication;

generate reliability confirmation information using a private key stored in advance if a result of the biometric authentication is normal; and

transmit the reliability confirmation information to the electronic approval server via the information processing device, and

the computer-readable storage medium causing the electronic approval server to:

communicate with the electronic approval device via the information processing device; and

store an electronic approval record indicating that approval in the electronic approval device has been successfully executed based on a public key corresponding to the private key and the reliability confirmation information,

wherein the electronic approval server stores the electronic approval record based on the reliability confirmation information generated in a plurality of electronic approval devices in which different private keys are set in association with the electronic approval record, and a public key corresponding to the private key for each of the electronic approval devices.

Assignments (2)
MERGER Recorded Aug 11, 2025
From: TOSHIBA INFRASTRUCTURE SYSTEMS & SOLUTIONS CORPORATION
To: KABUSHIKI KAISHA TOSHIBA
Reel/Frame 072400/0314 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 24, 2023
From: TOSHIMITSU, KIYOSHI
To: KABUSHIKI KAISHA TOSHIBA; TOSHIBA INFRASTRUCTURE SYSTEMS & SOLUTIONS CORPORATION
Reel/Frame 062802/0374 →
Priority Claims (1)
JP 2020-147749 · Sep 2, 2020 · national
Continuity (2)
Continuation PCTJP2021031942 · Aug 31, 2021
Related Publication 20230308282A1 · Sep 28, 2023
References Cited (20)
US 10333707B1 · Pathak · 2019 [cited by examiner]
US 10659457B2 · Ito et al. · 2020 [cited by applicant]
US 20100191967A1 · Fujii et al. · 2010 [cited by applicant]
US 20110179289A1 · Guenther · 2011 [cited by examiner]
US 20180115546A1 · Ito et al. · 2018 [cited by applicant]
US 20200195660A1 · McIver et al. · 2020 [cited by applicant]
US 20200388094A1 · Lee · 2020 [cited by examiner]
US 20220038291A1 · Hong et al. · 2022 [cited by applicant]
CN 111428218A · 2020 [cited by applicant]
JP 2004214792A · 2004 [cited by applicant]
JP 4042564B2 · 2008 [cited by applicant]
JP 4847077B2 · 2011 [cited by applicant]
JP 201426311A · 2014 [cited by applicant]
JP 201874205 · 2018 [cited by applicant]
JP 201874205A · 2018 [cited by applicant]
WO WO2019093573A1 · 2019 [cited by applicant]
Japan Patent Office, Int'l Search Report in PCT/JP2021/031942, 2 pages (Oct. 26, 2021). [cited by applicant]
European Patent Office, Office Action in EP App. No. 21864332.8, 9 pages (Sep. 13, 2024). [cited by applicant]
Japan Patent Office, Office Action in JP App. No. 2020-147749, 5 pages, and machine translation, 5 pages (Oct. 29, 2024). [cited by applicant]
Intellectual Property Office of Singapore, Office Action in SG App. No. 11202301426S, (Aug. 18, 2025). [cited by applicant]