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Re: push race

From
Shawn Pearce <spearce@spearce.org>
Date
Oct 16, 2012, 02:09 UTC
Message-ID
<CAJo=hJu=eqgUhJvvpMLJ05AT6o+nVUDcm+tHV8en8OCX2-2qgA@mail.gmail.com>
In-Reply-To
<20121015185608.GC31658@sigill.intra.peff.net>
On Mon, Oct 15, 2012 at 11:56 AM, Jeff King <peff@peff.net> wrote:
Show 5 quoted lines
> Right. The only thing that needs locking is the refs, because the object
> database is add-only for normal operations, and by definition collisions
> mean you have the same content (or are astronomically unlucky, but your
> consolation prize is that you can write a paper on how you found a sha1
> collision).

Its worth nothing that a SHA-1 collision can be identified at the server because the server performs a byte-for-byte compare of both copies of the object to make sure they match exactly in every way. Its not fast, but its safe. :-)

Previous: Jeff KingNext: Jeff King
Message 10 of 20 in “push race”
  1. Angelo BorsottiOct 15, 2012
  2. Matthieu MoyOct 15, 2012
  3. Nguyen Thai Ngoc DuyOct 15, 2012
  4. Ævar Arnfjörð BjarmasonOct 15, 2012
  5. demerphqOct 15, 2012
  6. Marc BranchaudOct 15, 2012
  7. Angelo BorsottiOct 15, 2012
  8. Jeff KingOct 15, 2012
  9. Jeff KingOct 15, 2012
  10. Shawn PearceOct 16, 2012
  11. Jeff KingOct 16, 2012
  12. Nguyen Thai Ngoc DuyOct 16, 2012
  13. Jeff KingOct 16, 2012
  14. Nguyen Thai Ngoc DuyOct 16, 2012
  15. Jeff KingOct 16, 2012
  16. Junio C HamanoOct 16, 2012
  17. Jeff KingOct 16, 2012
  18. Junio C HamanoOct 16, 2012
  19. Angelo BorsottiOct 16, 2012
  20. Angelo BorsottiOct 15, 2012

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