Re: [Linphone-developers] ZRTP advance mode

[javier falbo]

Hi Werner,

Yes, this seems an easy solution, but you could implement a selectable language dictionary on the zrtp setup and you also solve this problem. Militar keycodes are sent in words format (Alpha, Bravo, Charlie, etc) as single letters are complicate to handle during a voice contact. So the 2 letters words is more efficent on field operations that the 4 letters.

What about the selectable AES? i dont see any option to configurate 128 or the standard 256 AES on the zrtp.
By default the software connects on 128 which is below average the encryption. I would like to have default 256

regards.
Javier

> Date: Sat, 27 Dec 2014 09:42:11 +0100
> From: address@hidden
> To: address@hidden
> Subject: Re: [Linphone-developers] ZRTP advance mode
>
> May I step in here regarding the SAS:
>
> If you use SAS dictionary (as you describe it) then *never* translate the words into
> local languages because this will lead to SAS mismtach. For example if one party has
> a English setup and thus uses the English words and the other party hase a Spanish
> setup then this party would use the Spanish words. In this case the parties cannot
> compare the SAS and verify it.
>
> It's of utmost importance to have *same* list of words on both sides. This
> is the reason why the 4-character mode (base32) SAS is easier to handle internationally.
> Many people, even in arabic ountries for example, are able to spell single latin
> characters and digits but it's very hard for them to read the sometimes complex
> English words.
>
>
> Regards,
> Werner
>
>
> Am 26.12.2014 um 17:34 schrieb javier falbo:
> > Hi,
> >
> > I was searching how to configurate the AES key exchange in linphone zrto option.
> > As seems by default uses the 128 kbytes. I will like to be 256 kbytes AES by default.
> > How could i do it? i dont see any ADVANCE configuration on zrtp option.
> >
> > Also, it will be good to expand the 4 SAS letters, to a dictionary base 2 words same as silent circle do.
> > So it is easier and we could implement to local letters. Example spanish letters.
> >
> > Hope also linphoneweb adds the ZRTP option soon.
> >
> > regards,
> > javier
> >
> >
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> >
>
> --
> Werner Dittmann
> email: address@hidden
> cell: +49 173 44 37 659
> PGP key: 82EF5E8B
>
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