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CBOR Object Signing and Encryption (COSE): Headers for carrying and referencing X.509 certificates

Document Type Replaced Internet-Draft (individual)
Author Jim Schaad
Last updated 2018-12-26
Replaced by draft-ietf-cose-x509
Stream (None)
Intended RFC status (None)
Expired & archived
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Stream Stream state (No stream defined)
Consensus boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Replaced by draft-ietf-cose-x509
Telechat date (None)
Responsible AD (None)
Send notices to (None)
This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at:


The CBOR Encoded Message (COSE) structure syntax uses the COSE Key structure for placing keys in a message. This document extends the way that keys can be identified and transported by providing parameters that refer to or contain X.509 certificates in messages and in the COSE Key structure. This document defines a set of hash algorithms for COSE. These algorithms are needed in order to have X.509 certificates referred to by a thumbprint.


Jim Schaad

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