Encyclopedia
TKEY record
Record type of the Domain Name System
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.
01TKEY record format
| 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 |
02Mode field values
- 0, Reserved
- 1, Server assignment
- 2, Diffie-Hellman key exchange
- 3, Generic Security Service Algorithm for Secret Key Transaction
- 4, Resolver assignment
- 5, Key deletion
- 6-65534, Available
- 65535, Reserved
Sources and credits
This article is adapted from the Wikipedia article “TKEY record”, written by its contributors and licensed under CC BY-SA 4.0. Fathomly has changed the layout, removed citation markers, navigation and maintenance notices, and adjusted punctuation. This adapted version is shared under the same license. For references, see the original article.
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