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

Eric Rescorla <ekr@rtfm.com> Mon, 17 August 2015 14:25 UTC

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From: Eric Rescorla <ekr@rtfm.com>
Date: Mon, 17 Aug 2015 07:24:29 -0700
Message-ID: <CABcZeBM88ASJ0rjxBunnLQYJ+idosKydLrp8g5wUFhoNLOmaFw@mail.gmail.com>
To: Simon Bernard <contact@simonbernard.eu>
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Cc: "tls@ietf.org" <tls@ietf.org>
Subject: Re: [TLS] DTLS epoch and resume session/handshake
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Please see RFC 6347 S 4.2.8

-Ekr


On Mon, Aug 17, 2015 at 7:20 AM, Simon Bernard <contact@simonbernard.eu>
wrote:

> 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>
> 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>> 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
>>>
>>>     _______________________________________________
>>>     TLS mailing list
>>>     TLS@ietf.org <mailto:TLS@ietf.org>
>>>     https://www.ietf.org/mailman/listinfo/tls
>>>
>>>
>>>
>>
>
>

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