Ecdsa vs rsa - Which should I use?
I read on ssh.com that there are new ECDSA ssh keys that one should be using to create the public / private key pair; and that's it's a US Government Standard based on elliptical curves (probably something mathy). I also noticed that they use fewer bits, so I'm unsure how it is supposed to be more secure. Have you heard anything about this, and if it uses fewer bits how on earth could it be more secure?
ecdsa vs rsa ECC keys can be much shorter than RSA keys, and still provide the same amount of security, in terms of the amount of brute force that an attacker would need to crack these keys. For example, a 224-bit ECC key would require about the same amount of brute force to crack as a 2048-bit RSA key. See https://wiki.openssl.org/index.php/Elliptic_Curve_Cryptography for more info.