First of all, someone has factored a 512-bit RSA key (the one used to
protect a TI programmable calculator, it seems). It took 73 days on a
dual-core 1900Mhz Athlon64. It took just under 5 gigs of storage and
around 2.5 gigs of RAM. In other words: not much at all. It's not
some big distributed project - rather it's a single guy who wanted to
factor it and just left it running in the background for 2 and a half
months. (This is actually a month old - forgot to send it before now).
http://www.unitedti.org/index.php?showtopic=8888
Also, here's the Stick Figure Guide to AES:
http://www.moserware.com/2009/09/stick-figure-guide-to-advanced.html
David
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