title: SFTP Authentication using private RSA Key in libcurl
body: <p>I am using <code>stfp server</code> but it requires RSA key authentication, Here i want to upload files on my <code>sftp</code> server.</p>
  
  <p>So please any body can tell me how can i authenticate my SFTP server using private key of <code>RSA</code> programmatically in C. I want to do this thing in C</p>
  
  <p>i am using this <a href="http://curl.haxx.se/libcurl/c/fileupload.html" rel="nofollow">link</a> for refernce</p>
  
  <p>But Here its not mentioned how to do authentication of this SFTP using RSA key.</p>
  
  <p>Thanks</p>