title: Permissions 0644 for 'id_rsa_bblc' are too open
body: <p>I am running a job in jenkins. But when I create a build I get below error.</p>
  
  <pre><code>Permissions 0644 for 'id_rsa_bblc' are too open.
  It is required that your private key files are NOT accessible by others.
  This private key will be ignored.
  bad permissions: ignore key: id_rsa_bblc
  Permission denied, please try again.
  Permission denied, please try again.
  Permission denied (publickey,password).
  </code></pre>
  
  <p>While googling for a solution I found that I will have to change file permission to 400 or 600. So I tried to build job again after changing permission (using both 400 and 600) but still there is no use, the error still remains.</p>
  
  <p>Please help me resolve this issue.</p>