Universal PSKs for TLS

Document Type Expired Internet-Draft (individual)
Author David Benjamin 
Last updated 2018-12-16 (latest revision 2018-06-14)
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This document describes universal PSKs (Pre-Shared Keys) for TLS. Universal PSKs abstract the TLS 1.3 requirement that each PSK can only be used with a single hash function. This allows PSKs to be provisioned without depending on details of the TLS negotiation, which may change as TLS evolves. Additionally, this document describes a compatibility profile for using TLS 1.3 with PSKs provisioned for the TLS 1.2 PSK mechanism.


David Benjamin (davidben@google.com)

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)