Appendix B. "x5c" (X.509 Certificate Chain) Example

Appendix B. "x5c" (X.509 Certificate Chain) Example

This appendix provides an example of the "x5c" (X.509 certificate chain) Header Parameter. The "x5c" value contains a JSON array of base64-encoded (not base64url-encoded) DER PKIX certificate values.

The example demonstrates how X.509 certificates are formatted and included in the JWS Header as part of the key identification mechanism. Each certificate in the chain is base64-encoded and included as a string element in the JSON array.

For the complete example with actual certificate values, please refer to the official RFC 7515 document.