[adastra22]

Yeah they unfortunately abused the good will they got from that. Once differential cryptanalysis was known and it was clear the NSA had strengthened the DES S-boxes, people started trusting them. And they started making lots of suggestions to various standards. Only now they were inserting back doors. It wasn’t until Snowden that the pendulum of public paranoia swung back the other way.

[tptacek]

You're using the plural for "backdoors" there; what's the other one you're aware of?

[adastra22]

https://www.atlasobscura.com/articles/a-brief-history-of-the...

[tptacek]

Unless you count Clipper as a "backdoor", this article asks the same question I am. The whole point of Clipper, of course, was that keys were escrowed.

[adastra22]

Clipper was deliberately backdoored (the key exchange had a trap door), with that backdoor only publicly found after its release. This was more the a just key escrow. Why would that not count?

[tptacek]

The entire point of Clipper was to field cryptography that NSA could break. That wasn't a later revelation. It was the understanding at the time. It's why there were "the crypto wars".

[dekhn]

the morris hexabox shunt