Create multiple EdDSA SSH keys

Question

I've read a bunch on how to do using rsa. Now, how can I create multiple ssh keys using EdDSA i.e. id_ed25519

I can't add the same existing key to multiple github accounts I own (key already in use)
While attempting to create a second key, I'm unable to write a custom name (like one does when using rsa) inside the script

ssh-keygen -t ed25519_customname -C "[email protected]"

How can I create multiple EdDSA SSH keys?

Can you be more clear about the problem? Running that command works just fine (the argument to -C is appended to the public key as expected). — larsks
– larsks, Commented Feb 2, 2023 at 1:25
the issue isn't the command. That command was used when creating the first key. To create a second one I'd need to modify the file name with a custom name. Which is the heart of the issue — Jonca33
– Jonca33, Commented Feb 2, 2023 at 1:39
This is the docs: linux.die.net/man/1/ssh-keygen . What you need is the first syntax: ssh-keygen -t ed25519 -f ~/.ssh/ed25519_customname -C "[email protected]" — phd
– phd, Commented Feb 2, 2023 at 1:52
stackoverflow.com/a/62973365/7976758 Found in stackoverflow.com/search?q=%5Bssh-keygen%5D+different+name — phd
– phd, Commented Feb 2, 2023 at 1:54
thanks @phd I'll spend sometime reading those docs and learning more about those flags — Jonca33
– Jonca33, Commented Feb 2, 2023 at 2:05

Poom Chan · Accepted Answer · 2023-11-09 01:17:59Z

2

Do not specify the custom name under the -t tag.

Simply run ssh-keygen -t ed25519 Then, you will be prompted to enter the file path. The default, of course, is ~/.ssh/id_ed25519.

Instead, enter the path with your custom file name, for example ~/.ssh/my_custom_id_ed25519.

Now, you will have another key created and can be added to another GitHub account.

answered Nov 9, 2023 at 1:17

Poom Chan

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