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Re: [openpgp] Fingerprints and their collisions resistance

2013-01-04 04:53:49
Hi Andrey,

On Thu, Jan 03, 2013 at 03:30:14PM -0800, Andrey Jivsov wrote:
Instead of 80 bit is security (birthday 
bounds) SHA-1 is listed as 51 bits on 
http://en.wikipedia.org/wiki/Message_digest.

Since you mention the 51 bits part again and again ...

Do you have any data / research underpinning this 51 (Besides
Wikipedia)?

After all, the cited Wikipedia page links to the retracted variant of
an article :-(

Otherwise, the best /theoretical/ result that I know of is just
above 60.


Best regards,
Christian



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