CBOR Profile of X.509 Certificates

Document Type Replaced Internet-Draft (individual)
Authors Shahid Raza  , Joel Höglund  , Göran Selander  , John Preuß Mattsson  , Martin Furuhed 
Last updated 2020-03-09
Replaced by draft-mattsson-cose-cbor-cert-compress
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This document specifies a CBOR encoding and profiling of X.509 public key certificate suitable for Internet of Things (IoT) deployments. The full X.509 public key certificate format and commonly used ASN.1 DER encoding is overly verbose for constrained IoT environments. Profiling together with CBOR encoding reduces the certificate size significantly with associated known performance benefits. The CBOR certificates are compatible with the existing X.509 standard, enabling the use of profiled and compressed X.509 certificates without modifications in the existing X.509 standard.


Shahid Raza (shahid.raza@ri.se)
Joel Höglund (joel.hoglund@ri.se)
Göran Selander (goran.selander@ericsson.com)
John Preuß Mattsson (john.mattsson@ericsson.com)
Martin Furuhed (martin.furuhed@nexusgroup.com)

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)