HTTP registry: keyid
Key identifier for the signing and verification keys used to create this signature
HTTP parameter values extend negotiation, framing, preferences, range handling, or other protocol components. keyid is registered in HTTP Signature Metadata Parameters. Defining reference: RFC 9421, Section 2.3.
Identifier (http)
keyid
Key identifier for the signing and verification keys used to create this signature
Interpret parameters only in the context that defines them; unknown parameters must not silently change security or framing behavior.
This registry value is currently marked active by IANA. Follow the defining specification before sending, accepting, or proxying it.
IANA registry: http-message-signature/signature-metadata-parameters
Registry reference: RFC 9421, Section 2.3