I am building a mailing list manager, using mysql 4 at the moment.  I want
to have a simply web interface where one can remove themselves from a
mailing list. This will most likely be supplied as a link in a email that
will be sent to them when they email in and request info about a mailing
list.  What I don't want is to have a link like [EMAIL PROTECTED]
but would rather mask that email address as a unique string.

I was thiking that on INSERT I can use a timestamp with some random and that
should be pretty much guaranteed to be unique, I could just use the PK but
then people could fiddle the url and mess with others accounts.  So I need
something non sequential, rather random looking at least, perhaps somehow
make mysql case sensitive on this one as well. (How does one make mysql case
senseitive on a field?)

Would MD5(user_email_address) pretty much be what I am after?

I don't suppose there is any way to "un-MD5" something?
-- 
-------------------------------------------------------------
Scott Haneda                                Tel: 415.898.2602
http://www.newgeo.com                       Fax: 313.557.5052
[EMAIL PROTECTED]                            Novato, CA U.S.A.



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