Re: How safe are signed git tags? Only as safe as SHA-1 or somehow safer?

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On Tue, Nov 25, 2014 at 1:14 AM, Nico Williams <nico@xxxxxxxxxxxxxxxx> wrote:
> Is there a plan for upgrading to a better hash function in the future?
>  (E.g., should it become an urgent need.)
>
> What are the roadblocks to adoption of a replacement hash function?
> Just documenting this would go a long way towards making it possible
> to upgrade some day.

The biggest obstacle is the assumption of SHA-1 everywhere in the
source code (e.g. assume the object name always takes 20 bytes). Brian
started on cleaning that up [1] but I think it's stalled. Then we need
to deal with upgrade path for SHA-1 repos.

[1] http://thread.gmane.org/gmane.comp.version-control.git/248054
-- 
Duy
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