The goal of the hashing was to address the problem of keeping the list
of IPs out of the hands of spammers. I have looked into obtaining an IP
listing from existing RBLs and that seems to be their biggest concern.
Some even make you sign paperwork to that effect. I left the phrasing
generic ("one-way hashing function") because that is an area in which I
am weak and was hoping to receive feedback on. Is there no function
computationally intensive enough to use in this application?
-Pascal
Gordan wrote:
>
> On Thursday 25 Sep 2003 19:35, Pascal wrote:
> > ---RBL operator---
> > Periodically obtain a list of IP addresses to block. Convert each IP to
> > a 32bit integer and run it through a one-way hashing function saving the
> > resulting hashes to a file.
>
> Why is thishashing useful? Running through all 32-bit integers and hashing
> them to reveal what the actual IPs are is within the capabilities of any
> script kiddie with modern hardware. Just list the IPs and be done with it.
>
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