How to Break DES for Euro 8,980

Sandeep Kumar, Chris­tof Paar, Jan Pelzl, G. Pfeiffer, Andy Rupp, M. Schimmler

2nd Workshop on Special-purpose Hardware for Attacking Cryptographic Systems - SHARCS 2006, Cologne, Germany, April 3-4, 2006.


Cryptanalysis of symmetric and asymmetric ciphers is computationally extremely de- manding. Since the security parameters of almost all practical crypto algorithms are cho- sen such that attacks with conventional computers are computationally infeasible, the only promising way to tackle existing ciphers (in the absence of mathematical breakthroughs) is to build special-purpose hardware. Dedicating those machines to the task of cryptanalysis holds the promise of a dramatically improved cost-performance ratio so that breaking of commercial ciphers comes within reach