[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.
>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
>darcs-users mailing list
>darcs-users at darcs.net

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