GCHQ Challenge Solution Explained

First time accepted submitter DrDevil writes "The British spy agency GCHQ recently published a puzzle at canyoucrackit.co.uk (as featured on Slashdot), now just a few days later an academic at the University of Greenwich in England has posted a full video explanation of the puzzle. The puzzle has three stages and is not at all simple — likely to challenge even the best computer science graduates."

Re:Opaque

[Robadob]

Because terrorists are yet to discover x64

Why crack it when you can bypass it?

[TripleP]

So if you can't crack it, but you can bypass the challenge, do you still win?

http://www.canyoucrackit.co.uk/soyoudidit.asp [canyoucrackit.co.uk]