Millions of high-security crypto keys crippled by newly discovered flaw

Factorization weakness lets attackers impersonate key holders and decrypt their data.
This includes ID cards, TPM and OpenPGP keys generated on a some card-like devices (e.g. yubikey) (as opposed to those generated on a computer, that are safe).
Thanks for sharing, will have to check more into it later, but this is very interesting finds.