On 8/9/06, Nikolas Britton <[EMAIL PROTECTED]> wrote:
On 8/9/06, Igor Robul <[EMAIL PROTECTED]> wrote:
> On Tue, Aug 08, 2006 at 09:30:42PM -0300, Marc G. Fournier wrote:
> > Could create problems long term .. one thing I will be using the
> > IPs to do is:
> >
> > SELECT ip, count(1) FROM systems GROUP BY ip ORDER BY count DESC;
> >
> > to look for any 'abnormalities' like todays with Armenia ...
> >
> > hashing it would make stuff like that fairly difficult ...
> You can make _two_ hashes and then concatenate to form unique key.
> Then you still be able to see "a lot of single IPs". Personaly, I dont
> care very much about IP/hostname disclosure :-)
I still like my idea the best for unique keys. It's a better way to
detect hosts behind NATs, here it is again, four versions to pick
from:
# ifconfig | sha256
cbcc2f55a340c248af7e8a10871150d827af11d7051bbc782eefa04b0603248b
# ifconfig | sha1
b607b9d45e6ad40c02ab20800e0d70245ab6db68
# ifconfig | md5
22a2a3eca61166fb113f1a688b3dd842
# ifconfig | cksum
3977021799 540
The only down side is it still can be faked, just like everything else.
Based on the man pages: http://www.freebsd.org/cgi/man.cgi?
md5 first appeared in 1.1.5.1-RELEASE
sha1 first appeared in 4.10-RELEASE
sha256 first appeared in 6.0-RELEASE, 5.5-RELEASE.
That rules out sha256 and sha1, cksum was never a contender so this leaves md5.
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