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RFC 9257: Guidance for External Pre-Shared Key (PSK) Usage in TLS

In plain English — editorial summary, not part of the RFC

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.

Document record

Document ID
RFC9257
Published
July 2022
Authors
R. Housley; J. Hoyland; M. Sethi; C. A. Wood
Status
INFORMATIONAL
Stream
IETF
Area
sec
Pages
13
Also known as
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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.

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canonical URL: /rfc/9257-guidance-for-external-pre-shared-key-psk-usage-in-tls