Parsing and generating CBOR certificates?

Blumenthal, Uri - 0553 - MITLL uri at
Thu Jan 21 00:35:24 UTC 2021

I meant not "CBOR protocol" (which,  in all likelihood, doesn't and shouldn't exist) but CBOR encoding of X.509 certificates (which, hopefully, does exists).

At least, I'm looking for a tool that would convert between these two encodings (DER and CBOR) for specific objects (X.509-conformant certificates).



> On Jan 20, 2021, at 19:26, Kaduk, Ben <bkaduk at> wrote:
> 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
> which is very much still a work in progress.
> -Ben
> ________________________________________
> From: Blumenthal, Uri - 0553 - MITLL <uri at>
> 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
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