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Adding or changing a passphrase for an existing private key

You can change the passphrase for an existing private key without regenerating the keypair by typing the following command:

$ ssh-keygen -p -f ~/.ssh/id_rsa
> Enter old passphrase: [Type old passphrase]
> Key has comment ''
> Enter new passphrase (empty for no passphrase): [Type new passphrase]
> Enter same passphrase again: [Repeat the new passphrase]
> Your identification has been saved with the new passphrase.

If your key already has a passphrase, you will be prompted to enter it before you can change to a new passphrase.


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