3 ms·
How can I use the same ed25519 key pair for minisign and age?
by rawandriddled 2y ago
How can I use the same ed25519 key pair for minisign and age?
- some_furry 2y agoYou can't. Age is X25519, not Ed25519.
- rawandriddled 2y agoEdit: (Apologies). Thank you! Even with "ssh-ed25519" [1]? I looked at a ssh-ed25519 example [2] but i don't see how it can be extracted from the minisign secret key format [3], for example: ssh-ed25519: ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIK0wmN/Cr3JXqmLW7u+g9pTh+wyqDHpSQEIQczXkVx9q gleb@reys.net minisign secret key format: untrusted comment: minisign encrypted secret key RWRTY0IyNKMZZ+uqJdb8VtvSTo9EwylBlcsnitMtEyQzVLq/7tUAAAACAAAAAAAAAEAAAAAANLUi4xncsLbGKL+8y/n692Imrb9iURwzfnVfRqxqU5kAnVVrs98xMBqtIOiS63HZ3BQIGU6jpBWbX3ELCALfL/Le6UL3DunYfWqNPvhAKhlY4gQEjMzrL6ytxTFCXLGJpBSZHkK3DIQ= [1] https://github.com/FiloSottile/age#user-content-ssh-keys https://github.com/FiloSottile/age#user-content-ssh-keys [2] https://www.unixtutorial.org/how-to-generate-ed25519-ssh-key/ https://www.unixtutorial.org/how-to-generate-ed25519-ssh-key... [3] https://jedisct1.github.io/minisign/#secret-key-format https://jedisct1.github.io/minisign/#secret-key-format
- some_furry 2y agoIt looks like age with SSH keys uses a birationally equivalent keypair. https://github.com/FiloSottile/age/blob/176e245b3cb3ada322c21eef0bce166dc5a5e4c7/agessh/agessh.go#L157 https://github.com/FiloSottile/age/blob/176e245b3cb3ada322c2... If you're using, for example, libsodium, you'd want the Ed25519 to X25519 functions to convert the two. (Note that you need to operate over raw bytes to do this.) In practice, you shouldn't do this. Use different keys for different purposes!