@SteveBellovin @jpgoldberg @feld @cendyne @drwho Err, right, "unrelated" isn't exactly the right word, but QC doesn't needs to exits for this to be an issue.

Recorded traffic is always an issue when it comes to cryptography, and the lack of those mitigations means it's very easy to break a key before it's changed, or typically never changed at all in cases like cryptographic identities.