Upgrade your SSH keys for you own security. Bye bye DSA, welcome Ed25519
▻https://blog.g3rt.nl/upgrade-your-ssh-keys.html
Whether you’re a software developer or a sysadmin, I bet you’re using SSH keys. Pushing your commits to Github or managing your Unix systems, it’s best practice to do this over SSH with public key authentication rather than passwords. However, as time flies, many of you are using older keys and not aware of the need to generate fresh ones to protect your privates much better. In this post I’ll demonstrate how to transition to an Ed25519 key smoothly, why you would want this and show some tips and tricks on the way there.
Tl;dr: Generate your new key with ssh-keygen -o -a 100 -t ed25519, specify a strong passphrase and read further if you need a smooth transition.
I’m planning to publish some more posts on SSH tips & tricks, so keep an eye on my blog for more. This post will focus (...)