> And Ed25519 is not supported by major CAs. Perhaps because until February 2023 (when FIPS 186-5 was published) it wasn't approved for US government use: *

> And Ed25519 is not supported by major CAs. Perhaps because until February 2023 (when FIPS 186-5 was published) it wasn't approved for US government use: * https://en.wikipedia.org/wiki/EdDSA#Standardization_and_implementation_inconsistencies https://en.wikipedia.org/wiki/EdDSA#Standardization_and_impl... So there would have been complications for a sizeable base of potential customers (US, contractors, allies).