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My Number Card Kazashi Use Client Software (Usage Information for local government)

The My Number Card Kazashi Use Client Software is a general-purpose tool for Windows PCs that allows users to use face-to-face services with low required authentication strength by simply holding them up without entering their My Number Card password. We will introduce information necessary for using this tool in local government services.

Table of

1. What is the My Number Card Kazashi Client Software?

1. 1. Overview

The My Number Card Kazashi Use Client Software is provided for local government, private business, etc., and can be used by installing it on a client terminal (Windows) linked to the system of the service provider who performs Kazashi use.

1.2. Function

The My Number Card Kazashi Use Client Software supports the use of Windows PC Kazashi and provides some functions of the Public Personal Authentication AP, the Certificate Entry Auxiliary AP, and the Certificate Entry Confirmation AP. The My Number Card Kazashi Use Client Software can be used not only for public authorities but also for private business, etc. The details of each function provided by the My Number Card Kazashi Use Client Software are as follows.

1. 2.1. Use of My Number Card Displays

Through the revision of the Public Personal Authentication Act, regulations have been established for methods that do not require the entry of a personal identification number (PIN) in My Number Card. The amended Act will come into effect on the day specified by Cabinet Order within a period not more than one year and three months from the date of promulgation (June 9, 2023).

Available environments and requirements
  • Use for face-to-face, etc. (In addition to face-to-face environments, environments in facilities and areas that are managed and monitored, environments of terminals that are lent to and managed by users. Online and outdoor are not allowed.)
  • Situations where the required authentication strength is low
  • for the second and subsequent use (For the first registration, it is necessary to affix an electronic signature and an electronic certificate for user identification, etc., and to enter a personal identification number, etc.)
  • Confirmation of the genuineness of My Number Card
  • Verification of Validity of E-Certificate for User Identification

The My Number Card display client software supports these confirmation functions by implementation.

1.2. 2. Provision of Public Personal Authentication AP Functions

It provides a function to extract a E-Certificate for user authentication and a function to encrypt a random number with a private key using a random number and a PIN (4-digit personal identification number) as input.

1.2.3. Provision of the function of the certificate entry auxiliary AP

It provides an interface that matches the PIN (4-digit personal identification number) of the auxiliary AP and responds with the basic 4 information (name, address, date of birth, and sex).

1.2.4. Confirmation of matters on the face of the certificate Provision of AP (internal authentication) function

Internal authentication is performed using a PIN based on the date of birth of the AP (* 1), and the authenticity of the My Number Card held over the card reader is confirmed.

* 1 Only internal authentication using the date of birth PIN is supported, and functions such as obtaining the four basic information (name, address, date of birth, and sex), obtaining a face photo, and obtaining an image of the personal identification number are not applicable.

1.3. Introduction Procedure

The introduction procedure is as follows.

  1. Contact: Contact
  2. Submit a confidentiality agreement between Digital Agency and local government
  3. Receive necessary information such as interface specifications for client software using My Number Card Kazashi.
  4. Confirm the content of the information received with the system development vendor responsible for the existing system
  5. Renovate an existing system or make a development for a new system
  6. Development the screen conductor for calling the browser extension card access function and the IF calling function
  7. Install the screen conductor and IF call function described in 5. on the Windows terminal to be used.

2. Inquiries

For inquiries related to the My Number Card Kazashi Client Software, please contact the following.

Digital Agency Mykey Platform
E-mail: mykeypf _ atmark _ digital. go. jp
Subject: Enter "Inquiries about client software for using My Number Card Kazashi (local government name or business name)"
Main text: Enter the name of the local government or business operator, the name of the department, the name of the person in charge, and the contact information.

*To prevent unwanted e-mail, "@" is displayed as " _ atmark _ ". When sending e-mail, please change " _ atmark _ " to "@" (one byte).