No. OpenSSL does not include any CBOR protocol support. I'm also not sure what you mean by "CBOR-encoded certificate"; I don't know of any such thing other than https://datatracker.ietf.org/doc/draft-mattsson-cose-cbor-cert-compress/ which is very much still a work in progress. -Ben ________________________________________ From: Blumenthal, Uri - 0553 - MITLL <uri@xxxxxxxxxx> Sent: Wednesday, January 20, 2021 4:22 PM To: openssl-users Subject: Parsing and generating CBOR certificates? I need to work with CBOR-encoded certificates. Is there any way to use OpenSSL to parse and/or generate certs in CBOR encoding? Thanks Regards, Uri