Last Update:2025/04/21

SSO (Single Sign-On)
Student portal

Summary of this page

SSO (Single Sign-On) is one of the user authentication mechanisms for information services in Tohoku University. In addition to primarily functioning as an authentication window when accessing various information services on campus from the off-campus network, this service also serves as a gateway for the “student portal site,” which is a collection of links to various information services for students. This page explains fundamental information and operational methods regarding SSO authentication.
*SRP was concluded on April 1, 2024 and has been reborn as SSO.

0. Quick Guide

A short guide for SSO (Single Sign-On)Student portal is available here.

1. Service summary

1.1 Service details

The SSO (Single Sign-On) is one user authentication mechanism for information services in the university. This primarily functions as an authentication window when accessing various information services on campus from the off-campus network. In addition, the comprehensive collection of links to various student information services can be used as a login window for the “student portal site.” For some information services, when logging in, users must always go through the SSO authentication regardless of whether accessing from the campus network or from the off-campus network.

In SSO, to boost the security level, in addition to regular authentication using your Tohokudai ID and Tohokudai ID password, in certain cases it is necessary to implement the authentication process using a disposable password, referred to as an “one-time password authentication.”

1.2 Users

SSO is available for use by all the students (undergraduates and graduates). Procedures, including user registration, are not necessary for use but requires that a student must have a Tohokudai ID issued to them.

The student portal site can be used after going through SSO authentication, which is explained on this page.

1.3 Location and method of use

SSO is a web-based service. Possible to access from the campus network and the off-campus network.

2. Flow for SSO authentication

To receive authentication using SSO, the operating procedure for access from a campus network differs from that of access from an off-campus network.

2.1 Access from the campus network

  • Access the SSO login page.
  • Log in using your Tohokudai ID and Tohokudai ID password.
  • If authentication is successful, the student portal site will appear. It is possible to access various information services for students from this portal site.

2.2 Off-campus access

  • Access the SSO login page.
  • Log in using your Tohokudai ID and Tohokudai ID password.
  • After going through the authentication process using the ID and password, next use a one-time password for authentication. Read the explanation in Section 3 mainly concerning concrete operational methods.
  • After going through the one-time password authentication process, move to the student portal site.

3. One-time password authentication

3.1 Summary

In SSO, to boost the security level, in addition to regular authentication using your Tohokudai ID and Tohokudai ID password, in certain cases it is necessary to implement the authentication process using a disposable password, referred to as a “one-time password authentication.” One-time password authentication, when connecting from an off-campus network, can be executed after implementing regular authentication using your Tohokudai ID and Tohokudai ID password.

3.1 Preliminary preparation

Enable the DCMail service. View this page or the quick guide on how to use DCMail and for the set-up method.

3.2 Authentication method

  • Select the one-time password (email authentication), and click “Select.”
  • A one-time password will be sent to your DCMail. Example: 76110476
  • Input the one-time password (Example: 76110476). Then click “login.”

3.2.3 Supplemental information

  • One-time passwords are random at each time. Consequently, “76110476,” a password configured from the above example, is a “disposable” password only valid for one time. The same “disposable” password will not be valid after two (2) or more uses or after a certain period of time has passed.

4. Inquiries

Inquiries concerning SSO authentication should be addressed to the following.

Division for Information Technology, Center for Data-driven Science and Artificial Intelligence

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