TLS Extensions for Protecting SNI

Document Type Expired Internet-Draft (individual)
Author Kazuho Oku 
Last updated 2018-04-19 (latest revision 2017-07-18)
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This memo introduces TLS extensions and a DNS Resource Record Type that can be used to protect attackers from obtaining the value of the Server Name Indication extension being transmitted over a Transport Layer Security (TLS) version 1.3 handshake.


Kazuho Oku (

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