[TLS] Weekly github digest (TLS Working Group Drafts)

2020-08-09 Thread Repository Activity Summary Bot
Issues -- * tlswg/draft-ietf-tls-esni (+2/-0/💬0) 2 issues created: - Nonce rationale clarity (by bemasc) https://github.com/tlswg/draft-ietf-tls-esni/issues/253 - Avoid padding cliff (by bemasc) https://github.com/tlswg/draft-ietf-tls-esni/issues/252 Pull requests ---

Re: [TLS] Possible blocking of Encrypted SNI extension in China

2020-08-09 Thread David Fifield
On Thu, Jul 30, 2020 at 11:16:50AM -0700, Christian Huitema wrote: > Thanks for the report. I think this relates to our ambivalence about the > requirement for ESNI to not "stick out". That requirement is hard to > meet, and designs have drifted towards an acceptation that it is OK to > stick out a

Re: [TLS] Possible blocking of Encrypted SNI extension in China

2020-08-09 Thread Blumenthal, Uri - 0553 - MITLL
I’m pretty sure your reasoning is wrong. In the ideal world, if *everybody* enabled ESNI - then *maybe* the GFW would relent. The way things are - is not smart pretending reality is not what it is. Using your terminology - better blend with the crowd, because you aren’t likely to live long en

Re: [TLS] Possible blocking of Encrypted SNI extension in China

2020-08-09 Thread Dmitry Belyavsky
I just want to remind you about my FakeSNI draft https://tools.ietf.org/html/draft-belyavskiy-fakesni-02 The idea behind it was cheating the solutions less sophisticated than GFW. Yes, in real life it will require deep cooperation between DNS and hosting and yes, the resource still can be blocked

Re: [TLS] Possible blocking of Encrypted SNI extension in China

2020-08-09 Thread Peter Gutmann
>From the writeups I've seen, what they're blocking is TLS 1.3, not ESNI. Since ESNI can be de-anonymised with a high degree of success (see various conference papers on this) and in any case doesn't matter for the most frequently-blocked sites like Facebook, Instagram, Twitter, etc, it may not eve

Re: [TLS] Possible blocking of Encrypted SNI extension in China

2020-08-09 Thread Christian Huitema
On 8/9/2020 8:31 PM, Peter Gutmann wrote: > >From the writeups I've seen, what they're blocking is TLS 1.3, not ESNI. > Since ESNI can be de-anonymised with a high degree of success (see various > conference papers on this) and in any case doesn't matter for the most > frequently-blocked sites li