On Mon, Jan 4, 2021 at 3:44 PM Poul-Henning Kamp <p...@phk.freebsd.dk> wrote: > Shattered is less impressive when you take into account that you > can stuff as much much garbage into a PDF file as you need, without > affecting the files normal function. > > Compact data formats, formats which leave no wiggle-room and do not > offer extension-space for "attic-junk", are much harder to produce > *meaningful* collisions for. > > (I take no opinion in where git is on that spectrum.)
FWIW, a coworker of mine had a little hobby of introducing commits into our internal repro that had hashes that all started with deadc0de. As I understand it, it was able to do this by adding an bogus attribute with the right value to the commit object. Now, brute-forcing 8 digits in the hash is one thing and doing it for all 40 is quite another, but I suspect that this demonstrates that it's *possible* to do it for a git hash, given enough computing resources. _______________________________________________ freebsd-current@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"
