When ASIC's come online it is absolutely guaranteed that no one in the world can even dream of taking Bitcoin down without carefully planning it and investing a hell of a lot of money. That IS an improvement.
The NSA specializes in cryptology and they don't have the right hardware?
http://www.pbs.org/wgbh/pages/frontline/homefront/preemption/nsa.html
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People talk about the NSA having the fastest supercomputers in the world and having the largest concentration of top mathematicians in the world. What is that about?
... You're dealing with fairly sophisticated communications, particularly government communications; a lot of that is encrypted. It's put in the form of a code. These are very sophisticated systems that are developed by computers, and the only way to break those codes or those encryption systems is to have faster and more powerful computers than the computers that put them together in the first place. So NSA has the largest collection of supercomputers in the world. It has one whole building, several floors -- it's called the Tordella Supercomputer Building -- where all they have are supercomputers, the fastest and most powerful computers in the world. Plus, they have parallel processing there, which ties large numbers of computers together and makes them seem like one very giant computer.
So NSA uses all this computer power for a number of reasons. One of them is to try to break these codes. The hardest way is what's known as brute force, which is when you take all that computer power and put it on one problem and use all that force to try to break that system using every possible word/letter/phrase combination you could possibly use, that kind of thing.
What they look for most often are breaks in the system, what they call busts, and that's where somebody does something wrong; somebody makes a mistake; somebody is about to type a password, and they think they're typing it into their secure system, and they accidentally type their password into an open system. That's a backdoor way to get into the system. ...
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so they have a building of computers working some number problems. ( trying to break encryption b4 anyone else can )
GOOD!
once they break today's encryption. and create another better encryption, bitcoin / all the world encryption can switch over to this new form of encryption
no they can not use their computing power to try and 51% bitcoin. their computers are needed for far more important number problems...
Sure, but if they needed to they could have.
That was my point.
Yes they could, exactly how I described. By making an ASIC themselves. Do you have any idea how much power it would take to 51% bitcoin without custom hardware?
Also, once again, since you didn't seem to catch on the first time, they specialize in breaking encryption. Hashing algorithms are a different ball game and have different computational requirements.