[OTR-dev] Extra symmetric key

Dev Random c1.otr-dev at niftybox.net
Mon Jan 14 15:44:07 EST 2013


On 01/14/2013 09:04 AM, Kjell Braden wrote:
> On 01/14/2013 05:36 PM, Dev Random wrote:
>> On 01/14/2013 03:34 AM, Kjell Braden wrote:
>>> [sent this off-list earlier, sorry]
>>>
>>> The TLV8 is used to indicate to your partner's client that you intend
>>> to use the key, not to exchange key material (both sides know the key
>>> already). The contents are entirely application-defined.
>>
>> Yes, I realize that.  But what is the point of the key, if the content
>> of the TLV is *already encrypted* with the message key?
>>
>> Is the extra key meant to be used for out of band data?
>
> Yes, the key is not meant to be used in OTR-encrypted messages.
>

Thank you, that makes sense now.

--
Miron / devrandom




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