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Re: [TLS] DTLS epoch and resume session/handshake

Simon Bernard <contact@simonbernard.eu> Mon, 17 August 2015 14:21 UTC

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Date: Mon, 17 Aug 2015 16:20:53 +0200
From: Simon Bernard <contact@simonbernard.eu>
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To: Eric Rescorla <ekr@rtfm.com>, tls@ietf.org
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Archived-At: <http://mailarchive.ietf.org/arch/msg/tls/XSh7codkcl3yKLrxAE0g8Z206cw>
Subject: Re: [TLS] DTLS epoch and resume session/handshake
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I'm sorry to insist, but What did you mean by transport level connection 
? For me UDP was a connectionless protocol.

Simon

Le 31/07/2015 18:53, Eric Rescorla a écrit :
>
>
> On Fri, Jul 31, 2015 at 6:52 PM, Simon Bernard 
> <contact@simonbernard.eu <mailto:contact@simonbernard.eu>> wrote:
>
>     Thx.
>     What did you mean by connection ?
>
>
> transport level connection.
>
>     A resume handshake is a new connection ?
>
>
> You can also resume when you renegotiate.
>
> -Ekr
>
>
>     Le 31/07/2015 16:54, Eric Rescorla a écrit :
>
>         The epoch is set to 0 at the start of each connection and then
>         incremented
>         with each handshake on that connection.
>
>         -Ekr
>
>         On Fri, Jul 31, 2015 at 4:41 PM, Simon Bernard
>         <contact@simonbernard.eu <mailto:contact@simonbernard.eu>
>         <mailto:contact@simonbernard.eu
>         <mailto:contact@simonbernard.eu>>> wrote:
>
>             Hi,
>
>               I search in DTLS RFC 6347 if the epoch should be (re)set
>         to 0
>             when we start a resume handshake, or if we keep the last used
>             value, or the last used value+1 ? I can not any clue of
>         that in
>             the spec.
>               Any idea ?
>
>             Thx
>             Simon
>
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