Transport Layer Security (TLS) Client Keyshare Extension

Document Type Expired Internet-Draft (individual)
Author Bingzheng Wu 
Last updated 2015-11-07 (latest revision 2015-05-06)
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This document defines an extension that allows a TLS client to carry Diffie-Hellman (DH) keyshares in ClientHello message, replacing the ClientKeyExchange message in the second round-trip, to reduce the full handshake latency to one network round-trip time (RTT).


Bingzheng Wu (

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