It would take about 9 days to test every possible key at that rate.

Add one bit, to make it 769 bits long, and the number of possible keys doubles, the problem becomes much more difficult.

Here is a point that I would like to emphasize as a possible key to success.

There is no other source of information; not even its possible key can be conjectured.

But you don't have to try every possible key.

At the current rate (as of November 12, 2008), it will take approximately 1,000 years to test every possible key to complete the project.

He only has a possible key to the mystery.

With a key of length n bits, there are 2 possible keys.

Although the number of possible keys is very large (26!

Due to step 3, a brute force attack needs to test only 2 possible keys.