Greenwald interview: NSA cannot break the code on Miranda's thumb drives.

[longship]

45. No back door to public key encryption.

The mathematics is well known and actually kind of simple.

It depends on mathematical functions that are one way, lacking an analytical solution to the inverse function except for exhaustive search.

If the key space is large enough there is not enough computer resources on the planet to crack the code in any reasonable amount of time.

Since the mathematics is fairly simple, usually depending on the product of very large prime numbers -- finding prime factors is not analytically solvable, the algorithms are fairly simple as well. The security is inherent because the functions are designed to be one way trap doors.

Many encryption programs are released in open source which cannot credibly be claimed has back doors. If there were the hundreds of programmers all over the world working on these programs would be aware of it. If you believe there are back doors, get the source code yourself and point it out.

And No! Strong encryption -- available on any home computer -- is not crackable either. So, it's secure.