The DNSKEY RR Presentation Format The presentation format of the RDATA portion is as follows: The Flag field MUST be represented as an unsigned decimal integer. Given the currently defined flags, the possible values are: 0, 256, and 257. The Protocol Field MUST be represented as an unsigned decimal integer with a value of 3. The Algorithm field MUST be represented either as an unsigned decimal integer or as an algorithm mnemonic as specified in Appendix A.1. The Public Key field MUST be represented as a Base64 encoding of the Public Key. Whitespace is allowed within the Base64 text. For a definition of Base64 encoding, see [RFC3548].