[Security] XEP-0166, XEP-0167, XTLS - crypto and other stories.

[Dirk Meyer]

Justin Karneges wrote:
> If we consider SRTP to be a "Jingle crypto layer" then we have to make our 
> definition more complex by defining compatible application types or 
> introducing new transport types.  For example: ICE-UDP produces an unreliable 
> transport, Jingle SRTP consumes a reliable or unreliable transport and 
> produces an RTP transport, Jingle RTP consumes a reliable, unreliable, or RTP 
> transport.  Mess. :)
>
> My proposal does the least rocking of the boat.

Agreed. The crypto layer should only add security and should not change
the trasnport type. If you have a reliable transport and add crypto, the
result should be a secure transport with the same characteristics as
before. SRTP takes an unreliable transport but outputs something more.


Dirk

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