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Russ Housley, Jonathan Hoyland, Mohit Sethi, Christopher A. Wood
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.
RFC 9257: Guidance for External Pre-Shared Key (PSK) Usage in TLS
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