wire / cbor-tag / 556

CBOR tag 556 — A CBOR tag that contains an X.509 certificate chain created…

CBOR tag 556 (data item: string): A CBOR tag that contains an X.509 certificate chain created by the concatenation of as many PEM encoded X.509 certificates as needed. The certificates MUST be concatenated in order that each directly certifies the one preceding..

cbor-tag kind tag status standard verification verified tier A iana-registry-row@1

registry record

value: 556

Tag	556
Data Item	string
Semantics	A CBOR tag that contains an X.509 certificate chain created by the concatenation of as many PEM encoded X.509 certificates as needed. The certificates MUST be concatenated in order that each directly certifies the one preceding.
Reference	[TCG DICE Endorsement Architecture for Devices][TCG Errata for DICE Endorsement Architecture for Devices Version 1.1][TCG]
Template

provenance

source: https://www.iana.org/assignments/cbor-tags/tags.csv
version: IANA registry, Last-Modified: Thu, 02 Apr 2026 23:51:20 GMT
retrieved: 2026-05-29 · updated: 2026-05-29

agent: curl -H 'accept: application/json' wire.phall.io/cbor-tag/556 or /cbor-tag/556.json