RFC 2065:Domain Name System Security Extensions
RFC-Ref

DNS Response


Click on the red underlined text to get to the source

... Section 3 discusses the KEY resource record, its structure, use in DNS responses, and file representation. These resource records represent the public keys ...
... digital signature resource record, its structure, use in DNS responses, and file representation. These resource records are used to authenticate ...
... Section 5 discusses the NXT resource record and its use in DNS responses. The NXT RR permits authenticated denial in the DNS ...



Google
Web
RFC-Ref