Hello Geoffrey, On Thu, 2003-09-04 at 10:38, Geoffrey Devantier wrote: > We are having significant difficluties in persuading various clients > that single DES based systems are not secure. While I could go and buy > a DES cracking machine (for under $1000) I was hoping that someone > would be able to enlighten me on any any PC based single DES cracking > software (distributed cracking software is great!). If anyone could > help I would really appreciate it.
Perhaps the EFF's "Cracking DES" (http://www.eff.org/descracker/) might help. The EFF created this project to demonstrate how DES is insecure and built a hardware device to win the RSA Laboratory's "DES Challenge II" contest. The book contains descriptions of the hardware, board schematics and such. But the potentially interesting part to you might be the source code and chip simulator. I don't know how fast this would be as you may have to run the cracking software on an emulator. However - you may be able to compile/run the software directly - code that was acceptable in 1998 should be pretty lean on today's boxen, so even if you have to run it on the simulated chip, things may not be so bad The book is out of print (http://www.oreilly.com/catalog/crackdes/) but a mirror (with source) is available at http://www.realitydiluted.com/mirrors/des-crack/ HTH -- Pat Deegan http://www.psychogenic.com/ PGP Key: http://www.keyserver.net 0x03F86A50
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