text: **Note:**It is possible to use a passphrase for an SSH key. Although this action increases 
  security, it generates an extra step to log in with the SSH key because it requires the 
  passphrase input. 
  
  6. When prompted, enter a name (for example, sshkey.ppk), select a secure place as the 
  location, and click**Save**. 
  
  **Key generator:**The PuTTY key generator saves the PuTTY private key (PPK) with the 
  .ppk extension. 
  
  7. Close the PuTTY key generator. 