They aren't. Not to be rude, but aosmith is almost certainly wrong about what "Public/Private" means in this context. I have never seen a situation where the p

They aren't. Not to be rude, but aosmith is almost certainly wrong about what "Public/Private" means in this context. I have never seen a situation where the public and private key vary in length like that. It would also make no sense for the Private Key to be half the size as that key controls decryption and is the more important one to secure (and therefore be higher bit).