Spamproofing the Archives

From: Jeffrey Sharp <jss_at_subatomix.com>
Date: Sat Dec 7 00:27:00 2002

On Friday, December 6, 2002, Adrian Vickers wrote:
> > http://www.subatomix.com/cgi-bin/email?asf3uhh0239q0bs
> >
> > The script generates a page that asks the user to type in a specific
> > string to prove they're human. The query string above is the email
> > address with some some simple sort of encryption.
>
> I'd suggest an MD5 hash code - it's not necessarily unique, although that
> shouldn't be a problem, and it's non-reversable.

:-) The way I had thunk it, it would need to be both unique and reversable.
The confirm/reveal script would decode it to figure out what email address
to show to the user. Gotta be deterministic on the decode, you see. At least
for the first part, anyway.
||||||||||||||||||||
vvvvvvvvvvvvvvvvvvvv
alkfhpauu3efh09ashfa,abcabcabc
                     ^^^^^^^^^
                     |||||||||
Now the second part up there need not be unique or reversable. If the right
numbers are tacked on there at the end, the script would know to actually
show the email address instead of generate a confirm page.

But this is all moot, because another post has got my mind 90% changed to
something simpler.

-- 
Jeffrey Sharp
Received on Sat Dec 07 2002 - 00:27:00 GMT

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