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Comment Re:searching for ASCII (Score 1) 186

by sciengines (#30969956) Attached to: Parallel Algorithm Leads To Crypto Breakthrough
As published in scientific papers in 2006 COPACOBANA, www.copacobana.org provides 2^35 keys per second. And RIVYERA it's successor broke DES in a day 2008. Both are commercial available products of the firm SciEngines gmbH, www.sciengines.com whith is a spin-off of the original university project. 2007 their personal key recovery tool showed that des key recovery is simple even for the standard user.
Encryption

Parallel Algorithm Leads To Crypto Breakthrough 186

Posted by timothy from the how-about-cluster-some-ipads dept.
Hugh Pickens writes "Dr. Dobbs reports that a cracking algorithm using brute force methods can analyze the entire DES 56-bit keyspace with a throughput of over 280 billion keys per second, the highest-known benchmark speeds for 56-bit DES decryption and can accomplish a key recovery that would take years to perform on a PC, even with GPU acceleration, in less than three days using a single, hardware-accelerated server with a cluster of 176 FPGAs. The massively parallel algorithm iteratively decrypts fixed-size blocks of data to find keys that decrypt into ASCII numbers. Candidate keys that are found in this way can then be more thoroughly tested to determine which candidate key is correct." Update by timothy, 2010-01-29 19:05 GMT: Reader Stefan Baumgart writes to point out prior brute-force methods using reprogrammable chips, including Copacobana (PDF), have achieved even shorter cracking times for DES-56. See also this 2005 book review of Brute Force, about the EFF's distributed DES-breaking effort that succeeded in 1997 in cracking a DES-encrypted message.

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