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PuTTY key generator

PuTTYgen is the PuTTY key generator. You can load in an existing private key and change your passphrase or generate a new public/private key pair.

Change Password for Existing Private Key

You can change the password of your SSH key with "PuTTY Key Generator". Make sure to backup the key.

  • Load your private key file with Load button.
  • Enter your current passphrase.
  • Change key passphrase.
  • Confirm key passphrase.
  • Save your private key with Save private key button.

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Generate a New Public/Private key pair

You can generate an additional public/private key pair and insert public key into authorized_keys file for authentication with your own private key.

  • Start with Generate button.

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  • Generate some randomness.

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  • Wait.

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  • Enter a comment for your key using format  'username@organization.example.com'.
    Enter key passphrase.
    Confirm key passphrase.
    Save your new private key in "*.ppk" format with Save private key button.

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  • Save the public key with Save public key button.
    You can copy public key out of the ‘Public key for pasting into authorized_keys file’ box.

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  • Export private key in OpenSSH format "id_rsa" using Conversion -> Export OpenSSH key

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  • Now you can insert additional public key into authorized_keys file for authentication with your own private key.
    You must log in using ssh key received after registration. Then proceed to How to add your own key.