Crack that crypto!

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1) Testing security is essential having good security. Understanding the capabilities an adversary may have in performing a brute-force attack is required to implement real-world security that really works. Keeping an attack secret just lulls lots of people into thinking they have security, when they don't. So, the disparaging comments implying Pico is terrorist or anti-USA are unfounded. 2) A retry-delay can be a useful counter-measure in some cases. But, more often, if the attacker has the ciphertext he can make as many attempts as he wants to guess the key (without delays) using his own off-line hardware. 3) Note that using special hardware to mount an attack on the relatively short 56-bit DES key has been done before... a long time ago. (See EFF_DES_cracker on Wikipedia.) In 1998 EFF and CRI built a machine named "Deep Crack" that could test 90 billion keys per second, only about three times slower than Pico reported in Jan. 2010,nearly 12 years later. Another machine ("COPACOBANA") repeated Deep Crack's performance (approx.) in 2006, but at a lower cost. Deep Crack was significant in that it helped advance the well-founded perception that DES' 56-bit key was not long enough to be safe, culminating in the much improved 128-bit AES standard being issued in 2002 and the general relaxation of export restrictions on cryptographic products strong enough to be used for commerce.

The toughest thing to beat in any encryption scheme is simply a delay prior to accepting another key attempt, whenever a key attempt is incorrect. Am I missing something here? Anyone who allows 280B key attempts per second doesn't deserve any security.

Figures Bezerkeley would be helping people break crypto. Is their server named Ho Chi Mihn, like the park?

If you would only stop by boinc.berkeley.edu/projects.php and visit teh mathematics section you would see the above is not the only approach. Enjoy

Hi: In this time of Internet bandits and terrorism are you advertising this capapability?