title: Does passphrase need to be the same as the git hosting provider password
body: <p>I use <code>ssh-keygen -T rsa</code> to create a public key for accessing my git hosting provider.</p>
  
  <p>a) Does the passphrase entered here should be the same as the git hosting provider account password?
  Enter passphrase (empty for no passphrase):
  Enter same passphrase again:</p>
  
  <p>b) Can I use an empty password in the above step</p>
  
  <p>c) What is the significance of providing "<code>-C</code>" option, if given the key contains this value else it contains the domainname\accountname in the key</p>
  
  <p>d) I connect to 2 different git hosting providers (github and a private git hosting vendor). So I am assuming you have to create 2 keys OR having 1 key is enough for both the providers? Note: id_rsa.pub will erase the original copy if we create it twice.</p>
  
  <p>Kindly clarify</p>