Fun fact: most implementations actually always use 65537 as the public RSA key (17 was more common earlier, but rare now). It makes computations easier and faster, and doesn’t affect security much as long as you pick a hard-to-guess private key. The modulus is the thing that varies in public certificates.
Fun fact: most implementations actually always use 65537 as the public RSA key (17 was more common earlier, but rare now). It makes computations easier and faster, and doesn’t affect security much as long as you pick a hard-to-guess private key. The modulus is the thing that varies in public certificates.
This is only partially true.
RSA public keys consist of two parts:
If the public key were always completely the same, then there would be no point in making different private keys.
Isn’t RSA wholly deprecated for like… years by now?
Oh looked it up. It’s ssh-rsa that’s deprecated because of SHA-1, and NIST wants to phase out RSA-2048 by 2030.