On Fri, Mar 3, 2023 at 11:25 AM Sean Turner <s...@sn3rd.com> wrote:

> just want to point of out that at least in the IETF that RFC 9325 [1] was
> recently published.
>

Right. A salient sentence here: "Therefore, this document replaces
[RFC7525], with an explicit goal to encourage migration of most uses of TLS
1.2 to TLS 1.3."

Also, many TLS libraries have started to disentangle TLS 1.2 from TLS 1.3
code. The one I use most often is Rustls, and there's a build flag for this:
https://github.com/rustls/rustls/blob/25bc1b3ecd559ea70c6ae8a83533d430dd67db35/rustls/Cargo.toml#L24

I ship TLS 1.3-only all the time. I wouldn't do that for a really popular
website just yet, but it's usually fine.

thanks,
Rob
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