[comments in-line] On Fri, May 10, 2019 at 5:47 AM Martin Thomson <m...@lowentropy.net> wrote:
> It might pay to spend more time on explaining what you are trying to do. > > The goal appears to be to remove a dependency on signature schemes that > include these weaker hash functions. But the introduction just says that > the functions are bad. > > We've updated the draft. > You should be very clear about what effect this has on the use of SHA-1 in > HMAC for record protection. It looks like you don't intend to deprecate > that. Say that. > > Added. > The change to the enum is silly. Overall, I think that the updates to > 5246 are unnecessary. Concentrate on 7525. > > Removed change to enum. > The 7525 text starts with "When using RSA", so it could be read to not > apply to ECDSA. That would be a mistake. I recommend splitting the > paragraph into talking about the group size (the first sentence) and a > separate paragraph on hash functions used as part of the signing process. > > This change was also incorporated. > As part of that, this probably needs to be a MUST: "Clients SHOULD > indicate to servers that they request SHA-256, by using the "Signature > Algorithms" extension defined in TLS 1.2." > > And then I think we should publish something. Like David, I'm acutely > aware of the compatibility hazard that this presents, but it's no less > worth doing. > > We also agree with you. Latest draft is here: https://www.ietf.org/id/draft-lvelvindron-tls-md5-sha1-deprecate-04.txt > > On Fri, May 10, 2019, at 00:12, Loganaden Velvindron wrote: > > Hi all, > > > > Following the recent thread on TLS 1.0 and TLS 1.1 deprecation, we > > came up with a proposal to deprecate md5 and sha1 for digital > > signatures in the TLS 1.2 spec. > > > > Please find the draft at this url: > > https://tools.ietf.org/html/draft-lvelvindron-tls-md5-sha1-deprecate-03 > > > > We look forward to your feedback. > > > > _______________________________________________ > > TLS mailing list > > TLS@ietf.org > > https://www.ietf.org/mailman/listinfo/tls > > > > _______________________________________________ > TLS mailing list > TLS@ietf.org > https://www.ietf.org/mailman/listinfo/tls >
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