"I look at software the same way cryptologists look at encryption algorythms--they should both be open for inspection, but still be secure.
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Well, then you don't know much about cryptologists. The NSA has many algos they use and are classified Top Secret and above.
I admit I'm being anal here, but no such thing as above Top Secret, just different compartments within Top Secret. NSA crypto would probably be TS/SCI/SI (Top Secret, Special Compartmented Information, Special Intelligence).