On Wednesday, December 02, 2015 01:00:26 pm Salz, Rich wrote:
> Encrypted SNI doesn't give you the kind of protection you think that it does. 
>  We (me and a colleague) did a pretty thorough analysis that showed this.  It 
> was not a conclusion we expected, or wanted, to reach.   It was presented at 
> the TLS Interim before the IETF in Toronto.  Slides should be online.  (For 
> example, the adversary will know the IP address or might not care about false 
> positives, etc.)

URL from Rich's previous email citing this:
https://drive.google.com/file/d/0B8YgrWYHqacSV2hnZmR3VjJtRUk/view

Please don't brush this argument off in favor of the "obvious" answer that 
encrypted SNI is helpful. The sad truth is that it's a lot of effort with a lot 
of risk for virtually no gain. I was quite in favor of encrypted SNI before 
reading it, and I had to concede the point after. If we can come up with a way 
to do it easily, ok, but it's not an avenue worth spending too much time on.


Dave

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