Re: [TLS] Draft minutes for TLS at IETF 108

[Benjamin Kaduk <[e-mail]>]

On Wed, Aug 05, 2020 at 10:30:39AM +0000, tom petch wrote:
> From: TLS <[e-mail]> on behalf of Christopher Wood <[e-mail]>
> Sent: 04 August 2020 19:16
> 
> The official minutes are now up:
> 
>    https://urldefense.proofpoint.com/v2/url?u=https-3A__datatracker.ietf.org_doc_minutes-2D108-2Dtls_&d=DwICAg&c=96ZbZZcaMF4w0F4jpN6LZg&r=sssDLkeEEBWNIXmTsdpw8TZ3tAJx-Job4p1unc7rOhM&m=bJwecPEDnXCm7Huw2ovjHwHyzCjhyu2kGMG-qijduH0&s=ksaUzUpfyd4LFplcfnjfXdGBN-jTrMiqS2Z1vk_Iftw&e= 
> 
> <tp>
> What is Benjamin talking about at the end?
> 
> It looks as if you are proposing action on all or some RFC that have TLS 1.0 or 1.1 as MTI, related to oldversions-deprecate but that is a guess from reading between the lines and that topic is a live one for me so I would appreciate clarity.

oldversions-deprecate is already taking action on all RFCs that have TLS 1.0 or
1.1 as MTI (there are some 80-odd documents in the Updates: header).  The
particular itesm I was mentioning in the meeting relate to various subsets of
those documents that may need some additional handling on top of the basic
"don't use TLS 1.0/1.1; use 1.2 and 1.3 instead" that is currently the content
of the updates.  Details are at https://mailarchive.ietf.org/arch/msg/tls/K9_uA6m0dD_oQCw-5kAbha-Kq5M/
So:

- RFC 5469 defines DES and IDEA ciphers that are not in TLS 1.2; the
  document as a whole should be historic

- The downgrade-detection SCSV of RFC 7507 is probably in a similar boat

- We should be more clear about "if the document being updated says you
  MUST use TLS 1.0/1.1, that part is removed"

- No change proposed w.r.t. MTI ciphers (even though the old MTI ciphers
  are no longer considered very good)

Were there additional specific items you were unsure about?

-Ben