[OTR-dev] OTR Encrypted File Transfer, Spec Draft

[Peter Lawler]

On 05/06/13 12:47, Hans-Christoph Steiner wrote:

> Oh yeah, I forgot to mention that OTR in-band might continue to work if a XMPP
> service decided to block XEP-0047 transfers.

My 2c.

If the point of OTR is to 'just work' on any protocol, surely OTR-FT 
should 'just work' on any protocol as well. Thus, if you're on Y! or MSN 
and they decide to snoop FT connection points or even simply shut down 
their FT service. I don't see limiting OTR-FT to XMPP as a 'good thing'.

Although in-band could, I guess, lead to a LOT of data being sent over 
the chat channel. Which could, in theory, result in the IM service 
'guessing' you're sending a file in-band. Maybe some steganographic 
techniques could be employed on services that utilise 'custom smilies' - 
but this does move away from protocol agnosticism.

Hmmmm....

Pete.