NSA: chuckles hey here’s a recommendation for improving your encryption standard. We’re not telling you why we are recommending this.

Everyone, 20 years later: what the fuck bro how did you have this one absurdly nuanced exploit figured out back then? How was that even computationally feasible at the time?

NSA: chuckles hey here’s a recommendation for improving your post-quantum encryption standard. We’re not telling you why we are recommending this.