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Create an SSH Signing Key for Git

The instructions provided below are basic and do not cover advanced features of ssh-keygen and Git. For more detailed instructions on creating SSH signing keys for Git, refer to other resources available on the web.


Ensure that you have installed:

  • Git version 2.34 or newer (run git -v to check)
  • OpenSSH 8.8 or newer (run ssh -V to check)


Step 1: Create an SSH Signing Key

Run the following command in your terminal:

ssh-keygen -t ed25519 -C "" -N "" -f my_signing_key

This command will generate two files:

  • my_signing_key - the private key file
  • - the public key file

You can store the public key file anywhere, even public locations. However, ensure that your private key file remains private. A common location to store SSH key files is the local directory ~/.ssh/, where other SSH keys are often kept.

Step 2: Configure Git to Use Your SSH Signing Key

First, configure Git to use SSH keys for signing instead of GPG keys:

git config --global gpg.format ssh

Next, let Git know the location of your private SSH signing key. For example:

git config --global user.signingkey ~/.ssh/my_signing_key

Save the file somewhere for future access. You will use it to create a signed succession.