Key ID format: short or long?
mkesper at fsfe.org
Sun Oct 26 20:33:05 CET 2008
* Jens Peter Secher <jpsecher at gmail.com> [2008-10-26 15:05:51 +0100]:
> 2008/10/22 Michael Kesper <mkesper at fsfe.org>:
> > what: There were collisions with other existing keys if you only would have
> > looked at the last 8 chars of the fingerprint.
> That was quite unlucky, because there should be approximately 77000
> people gathered together to get a probability of 50% of a collision,
> according to http://en.wikipedia.org/wiki/Birthday_attack. :-)
I double-checked. There were no collisions among the participating people
but some of the participating keys short IDs collided with other existing
So, to be sure, always use 16 digits.
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