Migrate to ECC Encryption Keys
With COVID-extra spring cleaning time, a PSA post
on updating your security keys. We’re going to move your ssh and gpg keys from RSA algos to the more compact, efficient ECC (Elliptical Curve Cryptography) keys of ED59515. This is how you create them and how to swap them out on services and tools you use.
Most security experts now say to switch from RSA keys to using curves derived from the mathematical properties of elliptical curves, ECC (Elliptical Curve Cryptography). Increasing computing power, has made RSA style keys below 4096 bits vulnerable as well as their now being purpose-made tools around cracking passwords on those secret keys (there are countermeasures).