About the PEM Format

The PEM format is a standard certificate format that is Base64 encoded.

An example of a PEM-format certificate is as follows:

-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

When you create a trusted certificates list, you concatenate multiple PEM-format certificates into a single file. Line endings are auto-detected. The following example shows the format of a concatenated certificates list that contains two certificates.

-----BEGIN CERTIFICATE-----
<base64 content here>
-----END CERTIFICATE-----
-----BEGIN CERTIFICATE-----
<base64 content here>
-----END CERTIFICATE-----