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draft-ietf-cose-cbor-encoded-cert-03

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CBOR Encoded X.509 Certificates (C509 Certificates) (Internet-Draft, 2022)

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CBOR Encoded X.509 Certificates (C509 Certificates)

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https://datatracker.ietf.org/doc/html/draft-ietf-cose-cbor-encoded-cert-03

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IETF Datatracker

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This document specifies a CBOR encoding of X.509 certificates. The resulting certificates are called C509 Certificates. The CBOR encoding supports a large subset of RFC 5280 and all certificates compatible with the RFC 7925, IEEE 802.1AR (DevID), CNSA, RPKI, GSMA eUICC, and CA/Browser Forum Baseline Requirements profiles. When used to re-encode DER encoded X.509 certificates, the CBOR encoding can in many cases reduce the size of RFC 7925 profiled certificates with over 50%. The CBOR encoded structure can alternatively be signed directly ("natively signed"), which does not require re- encoding for the signature to be verified. The document also specifies C509 COSE headers, a C509 TLS certificate type, and a C509 file format.

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