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3. Log on to your old server. Go to shibboleth installation directory(/etc/shibboleth on Linux, c:\opt\shibboleth-sp on Windows). Verify the expiration day of the encryption certificate( signing certificate usually have has the same expiration day as the encryption certificate so you only need to verify encryption certificate)
Open sp-encrypt-cert.pem in text editor, copy the content and paste it in online certificate decoder: https://www.sslshopper.com/certificate-decoder.html. It will tell you the expiration day.
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