RFC 2065:Domain Name System Security Extensions
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protocol octet


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... The RDATA for a KEY RR consists of flags, a protocol octet, the algorithm number, and the public key ...
... The meaning of the KEY RR owner name, flags, and protocol octet are described in Sections 3.2, 3.3 and 3.4 below respectively. The flags and algorithm ...
... The Protocol Octet ...
... and/or email bit set). The protocol octet is provided to indicate that a key is valid for such use and, for end entity ...
... experimental range of the protocol octet. If demand for widespread deployment for the indefinite future warrants, a value in the ...



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