[Uta] RFC 9852 on New Protocols Using TLS Must Require TLS 1.3
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Subject: [Uta] RFC 9852 on New Protocols Using TLS Must Require TLS 1.3
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A new Request for Comments is now available in online RFC libraries.
BCP 195
RFC 9852
Title: New Protocols Using TLS Must Require TLS 1.3
Author: R. Salz,
N. Aviram
Status: Best Current Practice
Stream: IETF
Date: July 2026
Mailbox: rsalz@akamai.com,
nimrod.aviram@gmail.com
Pages: 7
Updates: RFC 9325
I-D Tag: draft-ietf-uta-require-tls13-12
URL: https://www.rfc-editor.org/info/rfc9852
DOI: 10.17487/RFC9852
TLS 1.3 is widely used, has had comprehensive security proofs, and improves both security and privacy deficiencies in TLS 1.2. Therefore, new protocols that use TLS must require TLS 1.3. As DTLS 1.3 is not widely available or deployed, this prescription does not pertain to DTLS (in any DTLS version); it pertains to TLS only.
This document updates RFC 9325. It discusses post-quantum cryptography and the security and privacy improvements in TLS 1.3 as the rationale for the update.
This document is a product of the Using TLS in Applications Working Group of the IETF.
BCP: This document specifies an Internet Best Current Practices for the
Internet Community, and requests discussion and suggestions for
improvements. Distribution of this memo is unlimited.
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