Generate A New Ssh Host Key

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  1. Generate Ssh Host Key Fingerprint
  2. Generate New Ssh Key Mac
  3. Generate A New Ssh Host Key Changed

If you are running Windows and PuTTYTray for SSH, you can use the built-in key generator from PuTTY to create a new key pair. Click the Keygen button at the bottom of the PuTTY Configuration window to get started. Then in the Key Generator window, check that the Type of key to generate at the bottom is set to SSH-2 RSA. The older SSH-1 was. From the PuTTY Key Generator dialog, click the Generate button. As the SSH key generates, hover your mouse over the blank area in the dialog. It may take a minute or two. When SSH key generation is complete, you see the public key and a few other fields. Enter a passphrase for your SSH key in the Key passphrase and Confirm passphrase fields. A key pair consists of two files, idrsa and idrsa.pub which are private and public keys respectively. The public key resides on the server side, whereas the private key is used when accessing it over SSH protocol. In the following example ssh-keygen command is used to generate the key pair.

How to Generate a Public/Private KeyPair for Use With Solaris Secure Shell

Users must generate a public/private key pair when their site implementshost-based authentication or user public-key authentication. For additionaloptions, see the ssh-keygen(1) manpage.

Before You Begin

Determine from your system administrator if host-based authenticationis configured.

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  1. Start the key generation program.


    where -t is the type of algorithm, one of rsa, dsa, or rsa1.

  2. Specify the path to the file that will hold the key.

    Bydefault, the file name id_rsa, which represents an RSAv2 key, appears in parentheses. You can select this file by pressing the Return key. Or, you can type an alternative file name.


    The file name of the public key is created automatically by appendingthe string .pub to the name of the private key file.

  3. Type a passphrase for using your key.

    This passphraseis used for encrypting your private key. A null entry is stronglydiscouraged. Note that the passphrase is not displayed when youtype it in.

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  4. Retype the passphrase to confirm it.


  5. Check the results.

    Check that the path to the keyfile is correct.


    At this point, you have created a public/private key pair.

  6. Choose the appropriate option:

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    • If your administrator has configuredhost-based authentication, you might need to copy the local host's publickey to the remote host.

      You can now log in to the remote host.For details, see How to Log In to a Remote Host With Solaris Secure Shell.

      1. Type the command on one line with no backslash.


      2. When you are prompted, supply your login password.


    • If your site uses user authentication with public keys, populateyour authorized_keys file on the remote host.

      1. Copy your public key to the remote host.

        Type thecommand on one line with no backslash.


      2. When you are prompted, supply your login password.

        Whenthe file is copied, the message “Key copied” is displayed.


  7. (Optional) Reduce the prompting for passphrases.

    For a procedure, see How to Reduce Password Prompts in Solaris Secure Shell. For more information, see the ssh-agent(1) and ssh-add(1) man pages.

Generate New Ssh Key Mac

Example 19–2 Establishing a v1 RSA Key for a User

In the following example, the user cancontact hosts that run v1 of the Solaris Secure Shell protocol. To be authenticated by v1hosts, the user creates a v1 key, then copies the public key portion to theremote host.

Generate A New Ssh Host Key Changed