5. IANA Considerations
The registries and registrations listed below were created during the processing of [RFC8152]. The majority of the actions are to update the references to point to this document.
5.1. CBOR Tags Registry
IANA created a registry titled "CBOR Tags" registry as part of processing RFC 7049, which was subsequently replaced by [RFC8949].
IANA has assigned a new tag for the CounterSignature type in the "CBOR Tags" registry.
Tag: 19 Data Item: COSE_Countersignature Semantics: COSE standalone V2 countersignature Reference: RFC 9338
5.2. COSE Header Parameters Registry
IANA created a registry titled "COSE Header Parameters" as part of processing [RFC8152].
IANA has registered the Countersignature version 2 (label 11) and Countersignature0 version 2 (label 12) in the "COSE Header Parameters" registry. For these entries, the "Value Type" and "Description" are shown in Table 1, the "Value Registry" is blank, and the "Reference" is "RFC 9338".
| Name | Label | Value Type | Description |
|---|---|---|---|
| Countersignature version 2 | 11 | COSE_Countersignature / [+ COSE_Countersignature ] | V2 countersignature attribute |
| Countersignature0 version 2 | 12 | COSE_Countersignature0 | V2 Abbreviated Countersignature |
Table 2: New Common Header Parameters
IANA has modified the existing "Description" field for "counter signature" (7) and "CounterSignature0" (9) to include the words "(Deprecated by RFC 9338)".