Re: [PATCH v2 00/13] Base SHA-256 implementation

>
> This series provides an actual SHA-256 implementation and wires it up,
> along with some housekeeping patches to make it suitable for testing.
>
> New in this version is a patch which reverts the change to limit hashcmp
> to 20 bytes.  I've taken care to permit the compiler to inline as much
> as possible for efficiency, but it would be helpful to see what the
> performance impact of these changes is on real-life workflows, or with
> MSVC and other non-GCC and non-clang compilers.  The resulting change is
> uglier and more duplicative than I wanted, but oh, well.
>
> I didn't attempt to pull in the full complement of code from libtomcrypt
> to try to show the changes made, since that would have involved
> importing a significant quantity of code in order to make things work.
>
> I realize the increase to GIT_MAX_HEXSZ will result in an increase in
> memory usage, but we're going to need to do it at some point, and the
> sooner the code is in the codebase, the sooner people can play around
> with it and test it.
>
> This piece should be the final piece of preparatory work required for a
> fully functioning SHA-256-only Git.  Additional work should be able to
> come into the testsuite and codebase without needing to build on work in
> any series after this one.