50% := 1- ( 1- 2^64/ N ) ^ (known key stream segments) We choose N = 128 build on pessimistic assumptions on known key stream (and optimistic assumptions on the bit error rate). Each key stream segment is 64 bit; segments can be overlapping -- i.e., a 70bit key stream segments gives you six 64-bit segments.
On Dec 1, 2009, at 4:11 PM, p q wrote: > in different messages the success probability of this attack has > been discussed , as its 50% . i couldnt collect all the info > together and fully understand it > would you please gather these info in one place and explain why > would you believe the success rate is 50% ? > thanks > _______________________________________________ > A51 mailing list > [email protected] > http://lists.lists.reflextor.com/cgi-bin/mailman/listinfo/a51 _______________________________________________ A51 mailing list [email protected] http://lists.lists.reflextor.com/cgi-bin/mailman/listinfo/a51
