https://www.schneier.com/blog/archives/2004/10/the_legacy_of_d.html
It tells about how DES made the cryptography turn into the public scientific domain in the course of the post-WWII history
trollge
> The S-boxes that had prompted those suspicions were designed by the NSA to remove a backdoor they secretly knew (differential cryptanalysis). However, the NSA also ensured that the key size was drastically reduced so that they could break the cipher by brute force attack.
Wikipedia quote to the same reference link on Schneier's blog... though Schneier notes that NSA really improved the algorithm against a certain type of attack, he didnt name the one...
> It took the academic community two decades to figure out that the NSA “tweaks” actually improved the security of DES.
trollge
So does it mean NSA both enhanced DES against very private type of attack according to Wiki, but made it vulnerable against bruteforcing that a TLA of any major country can do? What is the reason for them in enhancing the algorithm then?..✎
trollge
So does it mean NSA both enhanced DES against very private type of attack according to Wiki, but made it vulnerable against bruteforcing that a TLA of any major country can do, according to Bernstein? What is the reason for them in enhancing the algorithm against one attack but leaving it open to the single ultimate attack then?.. ✏