Re: [CFRG] Can you help me with this?

Adnan Rashid <adnanrashidpk@gmail.com> Sun, 25 July 2021 17:59 UTC

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From: Adnan Rashid <adnanrashidpk@gmail.com>
Date: Sun, 25 Jul 2021 19:59:06 +0200
Message-ID: <CAGm_1721w2z82c=UHg_NuU=TU+4JsRxuAubceSCA8P_ciEVh_A@mail.gmail.com>
To: "Scott Fluhrer (sfluhrer)" <sfluhrer@cisco.com>
Cc: Soatok Dreamseeker <soatok.dhole@gmail.com>, cfrg@irtf.org
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Subject: Re: [CFRG] Can you help me with this?
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I am on it. Thanks Scott. 😊

Regards,

Adnan Rashid

On Sun, Jul 25, 2021, 19:56 Scott Fluhrer (sfluhrer) <sfluhrer@cisco.com>
wrote:

> “Read the TLS RFC” isn’t a great answer, because TLS assumes a reliable
> transport; that is, records won’t be dropped or reordered (absent enemy
> action).  That assumption is mentioned in the first sentence of the
> introduction of the RFC, but the implications are not spelled out.
>
>
>
> Certainly, assuming a reliable transport is one viable approach.  However,
> if you can’t make that assumption (and sometimes we can’t), what we do is
> include the nonce in the encrypted packet; that way, it doesn’t matter if
> previous packets were dropped, as the current packet has sufficient context
> (that is, nonce) for the receiver to decrypt.
>
>
>
> *From:* CFRG <cfrg-bounces@irtf.org> *On Behalf Of *Soatok Dreamseeker
> *Sent:* Saturday, July 24, 2021 7:00 PM
> *To:* Adnan Rashid <adnanrashidpk@gmail.com>
> *Cc:* cfrg@irtf.org
> *Subject:* Re: [CFRG] Can you help me with this?
>
>
>
> 3. Check out the TLS 1.3 RFC for specifics.
>
>
>
>
>
>
>
> *Questions:*
>
>    1. How do Alice and Bob know the exact nonce for a particular packet?
>    Because packets may be dropped.
>
>
>
>
>
> Regards,
>
> ADNAN
>
>
>
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