Domain Name System Security (DNSSEC) Algorithm Numbers

Created

2003-11-03

Last Updated

2025-06-10

Available Formats

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Plain text

Registries Included Below

• DNS Security Algorithm Numbers
• DNS KEY Record Diffie-Hellman Prime Lengths
• DNS KEY Record Diffie-Hellman Well-Known Prime/Generator Pairs

DNS Security Algorithm Numbers

Registration Procedure(s)

Standards Action or Specification Required

Expert(s)

Unassigned

Reference

[RFC4034][RFC3755][RFC6014][RFC6944][RFC-ietf-dnsop-rfc8624-bis-13]

Note

Adding a new entry to the "DNS System Algorithm Numbers" registry with
a recommended value of "MAY" in the "Use for DNSSEC Signing", "Use for
DNSSEC Validation", "Implement for DNSSEC Signing", or "Implement for
DNSSEC Validation" columns will subject to the "Specification Required"
policy as defined in [RFC8126] in order to promote continued evolution
of DNSSEC algorithms and DNSSEC agility. New entries added through
the "Specification Required" process will have the value of "MAY"
for all columns.

Adding a new entry to, or changing existing values in, the "DNS System
Algorithm Numbers" registry for the "Use for DNSSEC Signing", "Use for
DNSSEC Validation", "Implement for DNSSEC Signing", or "Implement for
DNSSEC Validation" columns to any other value than "MAY" requires a
Standards Action.

If an item is not marked as "RECOMMENDED", it does not necessarily mean
that it is flawed; rather, it indicates that the item either has not been
through the IETF consensus process, has limited applicability, or is
intended only for specific use cases.
    

Note

The KEY, SIG, DNSKEY, RRSIG, DS, and CERT RRs use an 8-bit number used
to identify the security algorithm being used.

All algorithm numbers in this registry may be used in CERT RRs. Zone
signing (DNSSEC) and transaction security mechanisms (SIG(0) and TSIG)
make use of particular subsets of these algorithms. Only algorithms
usable for zone signing may appear in DNSKEY, RRSIG, and DS RRs.
Only those usable for SIG(0) and TSIG may appear in SIG and KEY RRs.

* There has been no determination of standardization of the use of this
algorithm with Transaction Security.
    

Available Formats

CSV

DNS KEY Record Diffie-Hellman Prime Lengths

Registration Procedure(s)

IETF Review

Reference

[RFC2539]

Available Formats

CSV

DNS KEY Record Diffie-Hellman Well-Known Prime/Generator Pairs

Reference

[RFC2539]

Available Formats

CSV