Comment Re:No reason to distrust Rijndael (Score 3, Insightful) 168
Good points. But then again remember that the NSA, having approved the cipher for use with classified documents, now has to use it themselves if they want to exchange top secret classified information with the rest of the US government! I think it's much more likely that they did apply even more of their vaunted cryptanalytic prowess to it when NIST gave their approval in 2000, and when by 2003 they found no significant weaknesses, they approved it for use with classified information. If they had found a significant weakness in AES and approved it anyway for such use, how arrogant and stupid would that make them? Their own supposedly secure communications with the rest of the government would be compromised as a result! As I said you can accuse the NSA of being many things, but I don't think stupidity is one of them.
Snowden himself said it: "Encryption works. Properly implemented strong crypto systems are one of the few things that you can rely on." Emphasis added. The real trouble is there are too many systems out there that use otherwise sound cryptographic primitives in insecure ways, either by incompetence or by design. The NSA has been known to pressure manufacturers of security equipment to do the latter, and naturally they will only certify equipment that hasn't been thus back-doored for government use.
And no, I don't think breaking AES would be career suicide for an academic cryptanalyst. Fermat's Last Theorem would also have been considered career suicide for centuries for the same reasons you cite, but now Andrew Wiles is one of the most famous mathematicians in the world. True, it's a hard problem, but if you manage to publish a workable break of AES you would become the most famous cryptographer in the world.