rfc9905v2.txt   rfc9905.txt 
Internet Engineering Task Force (IETF) W. Hardaker Internet Engineering Task Force (IETF) W. Hardaker
Request for Comments: 9905 USC/ISI Request for Comments: 9905 USC/ISI
Updates: 4034, 5155 W. Kumari Updates: 4034, 5155 W. Kumari
Category: Standards Track Google Category: Standards Track Google
ISSN: 2070-1721 October 2025 ISSN: 2070-1721 November 2025
Deprecating the Use of SHA-1 in DNSSEC Signature Algorithms Deprecating the Use of SHA-1 in DNSSEC Signature Algorithms
Abstract Abstract
This document deprecates the use of the RSASHA1 and This document deprecates the use of the RSASHA1 and
RSASHA1-NSEC3-SHA1 algorithms for the creation of DNS Public Key RSASHA1-NSEC3-SHA1 algorithms for the creation of DNS Public Key
(DNSKEY) and Resource Record Signature (RRSIG) records. (DNSKEY) and Resource Record Signature (RRSIG) records.
It updates RFCs 4034 and 5155 as it deprecates the use of these It updates RFCs 4034 and 5155 as it deprecates the use of these
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