How to convert a .cer file in .pem

Question

I have a .cer certificate and I would like to convert it in .pem format.

If I remember correctly in the past (6 years ago), I have converted them simply exporting the .cer in Base64, and renaming it in .pem .

How to I convert it from .cer to .pem?

Answer 1

Convert a DER file (.crt .cer .der) to PEM

openssl x509 -inform der -in certificate.cer -out certificate.pem

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