[darcs-users] Why Bitkeeper still wins
Daan Leijen
daan at cs.uu.nl
Tue Mar 22 15:02:45 UTC 2005
[sorry for the previous mail, I accidentally hit send..]
Hi Jamie,
Jamie Webb wrote:
>>>That depends on your definition of useful. The break in SHA1 is
>>>largely theoretical at this point.
>>>
>>ell, Bruce Schneier seems to say that it is definitely broken (as of
>>February 15, 2005):
>>
>>
>
>Yes. It's broken, as I said. It now takes 2^69 ops to find a
>collision, rather than the 2^80 required for a brute force attack.
>
>[snip]
>
>In summary: feel free to object to Monotone. I don't use it either.
>But the fact that it currently uses SHA1 is not a sound reason.
>
>
Thanks for your sound explanation. I didn't realize that it was so much
harder to
find a collision for a specific given message. Seems that it is indeed
mostly of theoretical
importance -- certainly not for a version control system in the
foreseeable future.
All the best,
-- Daan.
>-- Jamie Webb
>
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>
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