Re: [Dtls-iot] New Version Notification for draft-jay-tls-psk-identity-extension-00.txt

Hannes Tschofenig <> Tue, 29 September 2015 16:57 UTC

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From: Hannes Tschofenig <>
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Cc: Raja ashok <>, Ashutosh prakash <>
Subject: Re: [Dtls-iot] New Version Notification for draft-jay-tls-psk-identity-extension-00.txt
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Hi Jay,

judging from the content of the document I unfortunately need to tell
you that the DICE working group is the wrong place to discuss such a

The DICE WG is focused on using DTLS as is (without making extensions
and modifications). The TLS group is the right place to discuss your draft.


On 09/29/2015 05:21 PM, Jayaraghavendran k wrote:
> Hi All,
> A new TLS extension draft for optimizing TLS/DTLS handshake when PSK is used has been submitted to the TLS WG. This extension allows the Client Hello & Server Hello messages to negotiate the PSK Identity to be used thereby reducing the handshake latency to 1 RTT.
> Requesting your views and comments on the same as it is useful for DTLS usage in IoT.
> Thanks!
> Regards,
> Jay
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> -----Original Message-----
> From: [] 
> Sent: 29 September 2015 02:05
> To: Jayaraghavendran k; Jayaraghavendran k; Raja ashok; Raja ashok
> Subject: New Version Notification for draft-jay-tls-psk-identity-extension-00.txt
> A new version of I-D, draft-jay-tls-psk-identity-extension-00.txt
> has been successfully submitted by Jayaraghavendran K and posted to the IETF repository.
> Name:		draft-jay-tls-psk-identity-extension
> Revision:	00
> Title:		TLS/DTLS PSK Identity Extension
> Document date:	2015-09-28
> Group:		Individual Submission
> Pages:		10
> URL:  
> Status:
> Htmlized:
> Abstract:
>    Pre-Shared Key (PSK) based Key Exchange Mechanism is primarily used
>    in constrained environments where resource intensive Asymmetric
>    Cryptography cannot be used. In the Internet of Things (IoT)
>    deployments, constrained devices are commonly used for collecting
>    data via sensors for use in home automation, smart energy etc. In
>    this context, DTLS is being considered as the primary protocol for
>    communication security at the application layer and in some cases, it
>    is also being considered for network access authentication.
>    This document provides a specification for a new extension for
>    Optimizing DTLS and TLS Handshake when the Pre-Shared Key (PSK) based
>    Key Exchange is used. This extension is aimed at reducing the number
>    of messages exchanged and the RTT of the TLS & DTLS Handshakes.
> Please note that it may take a couple of minutes from the time of submission until the htmlized version and diff are available at
> The IETF Secretariat
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