Algorithm which was used to generate the digest from the public key.
Defines the type of key. It can be either a KSK (key-signing-key, value 257) or ZSK (zone-signing-key, value 256). Using KSK is always encouraged. Only use ZSK if your DNS provider isn't Route 53 and you don’t have KSK available.
The base64-encoded public key part of the key pair that is passed to the registry.