title: How do I convert public RSA key (in text form) to private PPK key file?
body: <p>I have been 'emailed' a "PUBLIC" AES 256 RSA Key (for example):</p>
  
  <blockquote>
    <p>"ssh-rsa
    AAASDHFhdfsdSDHF2SHdf932hSDF29SDFHSDF2SDFHSDF23SHDFewhw92sdfhSDFS29843SdhsdfZSDH=
    some@bunk"</p>
  </blockquote>
  
  <p>Now, I am being asked to use it for a WinSCP SFTP session connection. </p>
  
  <blockquote>
    <p>I see in the WinSCP connection information that there is the need for
    a "Private key file" that points to *.PPK.</p>
  </blockquote>
  
  <p><strong>How do I convert the public key I have in text form to a private PPK key?</strong></p>
  
  <p>The server I am working on (Windows Server 2003) has a copy of Putty. I have tried
  the various options but don't see any obvious area where my public key can be converted
  into the private PPK key I need. </p>
  
  <p>Please advise... </p>
  
  <p>Thanks.</p>