Re: [Acme] ALPN based TLS challenge

2018-02-26 Thread Salz, Rich
It’s good to see that there is a great deal of outside interest in this draft. It would be *really way much better* if we first had the main document done. Folks involved in that, please don’t get distracted by this – there will be plenty of time later. But first let’s get the main document in

Re: [Acme] ALPN based TLS challenge

2018-02-26 Thread Matthew D. Hardeman
I would concur that this mechanism far exceeds the original TLS-SNI-0x proposals. Significantly, it no longer abuses SNI routing flows over which initial assumptions about web host behavior were not borne out in the field. Instead, it requires that the server-side end of the TLS conversation b

Re: [Acme] ALPN based TLS challenge

2018-02-26 Thread Doug Beattie
Hopefully the validation summit next week will lay out the assumptions on what needs to happen outside of the CAs’ control to properly perform domain validation. Accurate technical descriptions of what’s needed for successful domain validation will help evaluate each method and we’ll be able to

Re: [Acme] ALPN based TLS challenge

2018-02-26 Thread Ryan Sleevi
On Mon, Feb 26, 2018 at 3:33 PM, Doug Beattie wrote: > > > I would find it a bit surprising if the CABF adopted a domain validation > method that relied on the web hosting provider claiming to do the right > thing (to separate users on shared IP addresses so they cannot request > certs from the o

Re: [Acme] ALPN based TLS challenge

2018-02-26 Thread Doug Beattie
I would find it a bit surprising if the CABF adopted a domain validation method that relied on the web hosting provider claiming to do the right thing (to separate users on shared IP addresses so they cannot request certs from the other customers on that IP address). Has anyone discussed this

Re: [Acme] ALPN based TLS challenge

2018-02-26 Thread Daniel McCarney
+1 The WG should adopt this document. I will volunteer to help review if adopted. On Mon, Feb 26, 2018 at 12:02 PM, Richard Barnes wrote: > +1 > > This approach is a major improvement from earlier efforts at a TLS-based > challenge. It follows normal TLS processing logic much more closely, >

Re: [Acme] ALPN based TLS challenge

2018-02-26 Thread Richard Barnes
+1 This approach is a major improvement from earlier efforts at a TLS-based challenge. It follows normal TLS processing logic much more closely, differing only in the fact that the certificate presented has an extra extension. Minimizing the differences w.r.t. normal behavior seems like a good a