TKEY (transaction key) is a record type of the Domain Name System.
TKEY RRs can used in number of different modes to establish shared keys between a DNS resolver and Server.
Contents |
| Field | Description | Length (octets) |
|---|---|---|
| NAME | Key name, which must be unique on client and server | (variable) |
| TYPE | TKEY (249) | 2 |
| CLASS | ANY (255) | 2 |
| TTL | 0 (since TKEY records must not be cached) | 4 |
| RDLENGTH | Length of RDATA field | 2 |
| RDATA | Variable-length structure containing the timestamp, algorithm, mode, hash data and error | (variable) |