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Re: [PATCH 0/2] Re-integrate sha1dc

On Thu, Mar 16, 2017 at 03:23:59PM -0700, Junio C Hamano wrote:

> I am wondering if we should queue another one for .travis.yml on top
> to force use of USE_SHA1DC=YesPlease during the tests.  I expect
> that we'd be encouraging its use for ordinary users without any
> specific needs in the release notes in 2.13 release.

I don't think it would buy us much. There's not really any way for this
build to interact with the rest of the code in any interesting way, so
either it works as a SHA-1 implementation or it doesn't. If you just
want it exercised, I'll say that it's powering all of github.com right

I did wonder if we should ship with it as the default (instead of
openssl). It's definitely slower, but maybe widespread safety is a good
thing. OTOH, I think we have a fair bit of time before we see any
real-life collisions, just given the time and expense of generating