On Feb 27, 2017, at 11:59 AM, Richard Hipp <d...@sqlite.org> wrote: > > nobody has yet devised two files that generate identical SHA1 and MD4 > hashes at the same time!
But Joux proved it not especially difficult in this paper, which came up in one of the earlier SHA-1 threads, to which you responded something like “interesting, thanks!” https://pdfs.semanticscholar.org/8d76/7e5daee98ba1879b8c8e66299b0e22c4fd95.pdf So you’re welcome again. :) Apparently this Joux guy has a lot of credibility in this area. His name keeps coming up in the literature, and in other places, like this slide deck: http://csrc.nist.gov/groups/ST/hash/sha-3/documents/kelsey_ches2013_presentation.pdf It is possible that Keccak, being so very different in construction from SHA-1 might solve this, but better ask a cryptographer if you want to make good on your wish to turn this into a bragging point over Git. _______________________________________________ fossil-dev mailing list fossil-dev@mailinglists.sqlite.org http://mailinglists.sqlite.org/cgi-bin/mailman/listinfo/fossil-dev
