I generated a certificate signed by Let’s Encrypt thanks to this site: https://gethttpsforfree.com/
I took the CSR of the WebAuth certificate from the WLC controller to be able to generate the signed certificate. Then I add the Root certificate that is on the site: https://letsencrypt.org/certs/isrgrootx1.pem.txt
following the intermediate certificate. I have my final certificate which contains:
- signed certificate
- intermediate certificate
- Root certificate
Then I import the final certificate (final.pem) via the graphical interface of the WLC controller.
the controller tells me that the certificate is not correct. It seems that the certificate signed by let’s Encrypt and the intermediate certificate is in SHA2 while the Root certificate is in SHA1. How can I get a Let’s Encrypt Root certificate in SHA2 please?
Thanks and regards.