On Donnerstag, 25. Januar 2018 13:42:55 CET Jonas Wielicki wrote:
> URL: https://xmpp.org/extensions/xep-0380.html

I wasn’t aware of this XEP until I deferred it today, so here a few comments.


First, OMEMO definitions should be added to the table for completeness.

Second, I’m not sure the rule about not including the @name attribute by 
default on the sending side makes sense. I don’t think we should be needing 
namespace bumps of EME to add new values for @namespace, so if @name is 
supposed to be usable for error messages when encryption is *not* supported, 
it should always be included by the sender (but ignored by the receiver iff 
they know the @namespace).


I’m not sure the third requirement:
> Enable a client to offer the user a possibility to decrypt a received 
> message (depending on the encryption method).

makes sense to me. If a client is theoretically able to decrypt a given 
protocol, it would also be able to detect it based on characteristics of the 
<message/> (usually an additional element in a certain namespace). 

If the encryption protocol has had a namespace bump, EME doesn’t help with 
that either.

kind regards,
Jonas

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