On Thu, Mar 16, 2017 at 06:04:56PM -0400, Jeff King wrote: > So here's my version. It's on top of the hash.h tweak, as well. > > [1/5]: add collision-detecting sha1 implementation > [2/5]: sha1dc: adjust header includes for git > [3/5]: sha1dc: disable safe_hash feature > [4/5]: Makefile: add USE_SHA1DC knob > [5/5]: t0013: add a basic sha1 collision detection test > [...] > t/t0013/shattered-1.pdf | Bin 0 -> 422435 bytes So obviously I had the same 100K problem you did on the first patch, but the fifth one also won't make it to the list. You can pull the whole thing from: https://github.com/peff/git.git jk/sha1dc -Peff