public Key Id
Parameters
value
The identifier for the public key that verifies this signature. MUST be an RFC3986 conformant URI. * When possible, the key id should be an immutable reference, such as a cryptographic digest. Examples of valid values:
OpenPGP V4 public key fingerprint. See https://www.iana.org/assignments/uri-schemes/prov/openpgp4fpr for more details on this scheme.
openpgp4fpr:74FAF3B861BDA0870C7B6DEF607E48D2A663AEEA
RFC6920 digest-named SubjectPublicKeyInfo (digest of the DER serialization):
"ni:///sha-256;cD9o9Cq6LG3jD0iKXqEi_vdjJGecm_iXkbqVoScViaU"