> While spreading the news about the RC5 contest, I was asked the following > question about the 56bit key and I wonder how to answer: > What is the complication of this exhaustive search? I suppose it is > exponential, but to what number?
With a 56 bit key, there are 2 to the power of 56 possible keys: 72,057,594,037,927,936 A 100MHz Penium can try roughly 81,000 RC5 keys per second, or it can try 380,000 DES keys per second. See also: http://theory.lcs.mit.edu/~rivest/bsa-final-report.ascii -- TO UNSUBSCRIBE FROM THIS MAILING LIST: e-mail the word "unsubscribe" to [EMAIL PROTECTED] . Trouble? e-mail to [EMAIL PROTECTED]
