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RFC 9257
Title: Guidance for External Pre-Shared Key
(PSK) Usage in TLS
Author: R. Housley,
J. Hoyland,
M. Sethi,
C. A. Wood
Status: Informational
Stream: IETF
Date: July 2022
Mailbox: hous...@vigilsec.com,
jonathan.hoyl...@gmail.com,
mo...@iki.fi,
c...@heapingbits.net
Pages: 13
Updates/Obsoletes/SeeAlso: None
I-D Tag: draft-ietf-tls-external-psk-guidance-06.txt
URL: https://www.rfc-editor.org/info/rfc9257
DOI: 10.17487/RFC9257
This document provides usage guidance for external Pre-Shared Keys
(PSKs) in Transport Layer Security (TLS) 1.3 as defined in RFC 8446.
It lists TLS security properties provided by PSKs under certain
assumptions, then it demonstrates how violations of these assumptions
lead to attacks. Advice for applications to help meet these
assumptions is provided. This document also discusses PSK use cases
and provisioning processes. Finally, it lists the privacy and
security properties that are not provided by TLS 1.3 when external
PSKs are used.
This document is a product of the Transport Layer Security Working Group of the
IETF.
INFORMATIONAL: This memo provides information for the Internet community.
It does not specify an Internet standard of any kind. Distribution of
this memo is unlimited.
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