TKEY record

TKEY (transaction key) is a record type of the Domain Name System (DNS). TKEY resource records (RRs) can be used in a number of different modes to establish shared keys between a DNS resolver and name server.

TKEY record format

TKEY resource record fields
Field Description Length (octets)
NAME Key name, which must be unique on client and server Variable
TYPE TKEY (249) 2
CLASS Ignored, should be ANY (255) 2
TTL Ignored, should be 0 4
RDLENGTH Length of RDATA field 2
RDATA Variable-length structure containing the timestamp, algorithm, mode, hash data and error Variable, as per RDLENGTH

Mode field values

See also

References

  • RFC 2930, "Secret Key Establishment for DNS (TKEY RR)", D. Eastlake, September 2000
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