RFC 9905: Deprecating the Use of SHA-1 in DNSSEC Signature Algorithms
In plain English — editorial summary, not part of the RFC
This document deprecates the use of the RSASHA1 and RSASHA1-NSEC3-SHA1 algorithms for the creation of DNS Public Key (DNSKEY) and Resource Record Signature (RRSIG) records. It updates RFCs 4034 and 5155 as it deprecates the use of these algorithms.
Document record
- Document ID
- RFC9905
- Published
- November 2025
- Authors
- W. Hardaker; W. Kumari
- Status
- PROPOSED STANDARD
- Stream
- IETF
- Area
- ops
- Pages
- 5
- Also known as
- —
Topics
Related documents
Ranked automatically by shared keywords, IETF area and stream — not by editorial selection.
- RFC 9906Deprecate Usage of ECC-GOST within DNSSECCurrent
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- RFC 9904DNSSEC Cryptographic Algorithm Recommendation Update ProcessCurrent
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- RFC 8509A Root Key Trust Anchor Sentinel for DNSSECCurrent
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- RFC 9824Compact Denial of Existence in DNSSECCurrent
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- RFC 9726Operational Considerations for Use of DNS in Internet of Things (IoT) DevicesCurrent
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- RFC 9364DNS Security Extensions (DNSSEC)Current
February 2023
- RFC 9276Guidance for NSEC3 Parameter SettingsCurrent
August 2022
- RFC 8976Message Digest for DNS ZonesCurrent
February 2021
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The document record above — title, authors, date, status, stream, area, relationships, DOI and errata — is imported verbatim from the public RFC Editor index. The “in plain English” section is editorial: written by The metasystema editorial team, not part of the RFC. Where the two differ, the RFC text governs.
Last checked against the RFC Editor index on . RFCs are never revised after publication; changes are issued as new documents.
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