Re: [TLS] ESNI Android Implementation

Stephen Farrell <stephen.farrell@cs.tcd.ie> Fri, 14 February 2020 10:39 UTC

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To: Nick Sullivan <nick=40cloudflare.com@dmarc.ietf.org>, Justice Parham <justking100@gmail.com>
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From: Stephen Farrell <stephen.farrell@cs.tcd.ie>
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Date: Fri, 14 Feb 2020 10:39:50 +0000
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Subject: Re: [TLS] ESNI Android Implementation
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Sorry, I had meant to reply to this but forgot...

On 13/02/2020 21:34, Nick Sullivan wrote:
> Hi Justice,
> 
> Thanks for reaching out and welcome. At this point, another implementation
> of draft-02 wouldn't hurt, but it also likely won't contribute much to the
> development process for this document. We've learned what we can from -02
> and the upcoming draft version will likely be radically different from the
> existing published version, so you likely won't be able to re-use much
> code. If it's possible for your schedule I recommend waiting or exploring
> questions like how applications with different TLS stacks can get access to
> ESNI records if they're fetched system-wide.

I agree with Nick.

If you did want to play with draft-02 code on android,
then you could see if my fork of openssl [1] works. It
has support for drafts -02 to -04.

There is a CI setup that builds it for android but it
hasn't really been tested ever. Happy to help if that
was of interest.

Cheers,
S.

[1] https://github.com/sftcd/openssl/

> 
> Nick
> 
> On Tue, Jan 21, 2020 at 12:30 AM Justice Parham <justking100@gmail.com>;
> wrote:
> 
>> Hello tlsWG,
>>
>> First I would like to introduce myself to you. My name is Justice Parham
>> (github mrsylerpowers) a current Senior Undergraduate Student at North
>> Carolina A&T State University. As my senior project I decided to create a
>> android system wide implementation of the ESNI Draft. I am planning on
>> implementing draft-ietf-tls-esni-02 because this is the version that
>> cloudflare currently has published on their servers. I am planning on
>> upgrading to newer versions of ESNI as more implementations come out on the
>> server side
>>
>> My question to everyone is if creating this implementation will hurt or
>> help this document? I would really like for this to be a standard that is
>> used everywhere in every browser and in every computer. But I understand draft-ietf-tls-sni-encryption
>> 3.4
>> <https://tools.ietf.org/html/draft-ietf-tls-sni-encryption-09#section-3.4>'s
>> importance about not sticking out. Is there a time where vendors all plan
>> to implement or do you think this is a perfect time to create this?
>> _______________________________________________
>> TLS mailing list
>> TLS@ietf.org
>> https://www.ietf.org/mailman/listinfo/tls
>>
> 
> 
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