PEM vs CERT vs CER
A .pem format certificate will most likely be ASCII-readable. It will have a line -----BEGIN CERTIFICATE----- , followed by base64-encoded data, followed by a line -----END CERTIFICATE----- . There may be other lines before or after. Even though PEM encoded certificates are ASCII they are not human readable. Here are some commands that will let you output the contents of a certificate in human readable form; How to View PEM encoded certificate ---------------------------- Use the command that has the extension of your certificate replacing cert.xxx with the name of your certificate openssl x509 -in cert.pem -text -noout openssl x509 -in cert.cer -text -noout openssl x509 -in cert.crt -text -noout If you get the folowing error it means that you are trying to view a DER encoded certifciate and need to use the commands in the “View DER encoded certificate below” unable to load certificate 12626:error:0906D06C:PEM routines:PEM_read_bio:no start line:pem_lib.c:647:Expecti