zlacker

Well until 2 Israeli guys "rediscovered" differential cryptanalysis against DES in the late 80's no one knew about it either, no one with the exception of the NSA and the DES working group at IBM that is, even tho to them that weakness was known for almost 2 decades.

Additionally something like an effective attack against AES, RSA, or any other major encryption standard will probably be so compartmentalized that it won't even have a code word.

But on the other hand S31176 refers to a program which provides cryptanalysis against VPN (IPSEC, SSL and more) and it claims that they can decrypt (some of) the traffic. http://www.spiegel.de/media/media-35515.pdf