content: That begs the question: Do you have evidence that the NSA said that? From the README (OP):  "Short DKIM keys can be cracked." When GMail first started DKIM signing, they used 1024 bit RSA keys. These are short enough that a nation state (like Russia) can crack them. But since 2012, they've been using 2048 bit RSA keys, which even all the nation states working together cannot crack. Note: that link is also yet another source verifying this key is the correct one.