NSA recommends the rule-of-two, I think even before quantum resistant algorithms: https://en.wikipedia.org/wiki/Multiple_encryption?utm_source=chatgpt.com#The_

NSA recommends the rule-of-two, I think even before quantum resistant algorithms: https://en.wikipedia.org/wiki/Multiple_encryption?utm_source=chatgpt.com#The_Rule_of_Two https://en.wikipedia.org/wiki/Multiple_encryption?utm_source... The rest of the article has some stuff on what can go wrong if the implementations aren't truly independent.