SSH Keys

SSH Keys Overview

When creating a new SSH Key, these are the command line instructions to create it. The instructions are geared toward a Linux local machine install.

ssh-keygen -t ed25519 -C "<email address>" -f ~/.ssh/ed25519
eval "$(ssh-agent -s)"
ssh-add ~/.ssh/ed25519
git config core.sshCommand "ssh -i ~/.ssh/ed25519 -o IdentitiesOnly=yes"

SSH Key Generator

• The -t ed25519 reference is the algorithm GitHub uses to generate the key.
• The -C reference is the email address of the GitHub account holder where the repo resides.
• The -f reference is where the key file resides on your local machine.

SSH Key Authentication

These two commands links the SSH Key to the SSH Agent.

eval "$(ssh-agent -s)"
ssh-add ~/.ssh/ed25519

SSH Key Authentication

The core.sshCommand configuration variable in Git allows you to specify a custom SSH command for repository authentication.

git config core.sshCommand "ssh -i ~/.ssh/ed25519 -o IdentitiesOnly=yes"

Once these are done, then git push and git pull commands can operate seamlesly.

Also, you can create multiple SSH Keys, all that is required is to copy and change the -f reference, so that e25519 becomes ed25519_repo2 or whatever you want to call it, and run a new Key Gen code:

ssh-keygen -t ed25519 -C "<email address>" -f ~/.ssh/ed25519_repo2