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RWTH Single Sign-On: URL and Certificate Check

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When using Shibboleth, all authentication requests are processed via the domain sso.rwth-aachen.de.

On this page you will learn how to verify the URL and the security certificate for the domain.

RWTH Single Sign-On login mask

Starting April 23, 2026, the RWTH Single Sign‑On will be presented in a slightly modified design with a light‑gray background. This change is part of a technical update. The functionality remains unchanged, and the login continues to be secure and available as usual.

The old design:

RWTH Single Sign-On login mask

The new design:

Anmeldemaske RWTH Single Sign-On

Verifying URL

The URL of the RWTH Shibboleth authentication page (RWTH Single Sign-On) will be displayed in the following form in the address bar of the browser:

in Chrome: sso.rwth-aachen.de/idp/profile/SAML2/Redirect/SSO?execution=e2s1
in Firefox: https://sso.rwth-aachen.de/idp/profile/SAML2/POST/SSO?execution=e1s1

Verifying the security certificate in Chrome

Step 1
Click on the “Website information” icon in the address bar of your browser.

Step 2
Click on Connection is secure.

Screenshot of RWTH Single Sign-On in the Chrome browser. Next to the URL bar is the "Show website information" icon. Selecting it opens the "sso.rwth-aachen.de" drop-down menu opens with three sections. The first section is "Connection is secure."

Step 3
Click on Certificate is valid.

Screenshot from Chrome. The "Security sso.rwth-aachen.de" menu is open. Beneath a short note, you will find: "Certificate is valid."

You will now see information about the security certificate such as issuer, validity and fingerprints.

Screenshot of the certificate viewer for sso.rwth-aachen.de. The issuer should be RWTH Aachen University. Under "Issued by," the organization should be "GEANT TLS RSA 1/Hellenic Academic and Research Institutions CA." The date under "Validity period" should be current. The certificate fingerprint ends with b08b6b111. The public key ends with d0af8adc.

Verifying the security certificate in Firefox

Step 1
Click on the "Lock" symbol.

Step 2
Click on Connection is secure.

Screenshot of RWTH Single Sign-On in the Firefox browser. Next to the URL bar is the lock icon "Website Information." Selecting this opens the menu "Site Information for sso.rwth-aachen.de." The first item in the menu is "Connection Secure."

Step 3
Click on More information.

Screenshot from Firefox. The "Connection security for sso.rwth-aachen.de" menu is open. Below the short note is a button labeled "More information."

Step 4
Click on View certificate to check the certificate information.

Screenshot of the "http://sso.rwth-aachen.de" window, "Security" tab. Under "Website Identity," you will find the "View Certificate" button.

You will now see information about the security certificate such as issuer, validity and fingerprints.

Screenshot of the Certificate Viewer, tab "sso.rwth-aachen.de". The subject name should be "RWTH Aachen University." The organization "Hellenic Academic and Research Institutions CA/GEANT TLS RSA 1" should be listed under "Issuer Name." The date under "Validity" should be current. The SHA-256 certificate fingerprint should end with 1B:08:B6:B1:11.

last changed on 04/22/2026

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