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64 bit has 2⁶⁴ possible key combinations (18446744073709551616), 128 bit has 2¹²⁸. Remember that 2⁶⁸, for example, is sixteen times as much as 2⁶⁴.Interesting read, Naota. :)If it would take ten minutes to decrypt a 64 bit key, that's 2^64/10 attempts per minute. Seeing that a 128 bit key has the equalevant of (2⁶⁴)² possibilities, it would take 2⁶⁴ times as much tries to decode the key. That's 2⁶⁴*10 = 184467440737095516160 minutes.That's 184467440737095516160 / ( 60*24*365) = 350965450413043 years to decode the key.I think you're pretty safe with a 128 bit key. :)

That's 184467440737095516160 / ( 60*24*365) = 350965450413043 years to decode the key.I think you're pretty safe with a 128 bit key. :)

You haven't met the power of botnets have you?I have a friend who could decode 256bit encryptions in two hours.

That's 184467440737095516160 / ( 60*24*365) = 350965450413043 years to decode the key.I think you're pretty safe with a 128 bit key. :)

You haven't met the power of botnets have you?I have a friend who could decode 256bit encryptions in two hours.

That's either a very effecient bruteforcer, or a badly performed simulation.Processors can reach 40 gigaflops, that's about 12 billion tries per second. But if you hack a wireless network, you're bound to the low data speeds, plus the speed of the router. There's no way that you can try 2^256 keys in two hours.

Now you see how pointless it is to hack into a wireless router.But about 20k botnets can do that in about two hours.

Bleh, I have nothing to hide. Hack me if you wish. (Tech Support replies ftw )

That's 184467440737095516160 / ( 60*24*365) = 350965450413043 years to decode the key.I think you're pretty safe with a 128 bit key. :glasses:

You haven't met the power of botnets have you?I have a friend who could decode 256bit encryptions in two hours.

That's either a very effecient bruteforcer, or a badly performed simulation.Processors can reach 40 gigaflops, that's about 12 billion tries per second. But if you hack a wireless network, you're bound to the low data speeds, plus the speed of the router. There's no way that you can try 2^256 keys in two hours.

The process isn't as much as brute forcing, as.. (whisper whisper) things to do with downloading packets (whisper whisper)