title: pkcs11-tool doesn't recognise RSA key
body: <p><code>pkcs11-tool</code> fails to import the RSA private key, even though it's parsed correctly by openssl. It fails with:</p>
  
  <pre><code>error: OpenSSL error during RSA private key parsing
  Aborting.
  </code></pre>
  
  <p>The key is already in the DSA format and I'm trying to import it using:</p>
  
  <pre><code>pkcs11-tool --module ... -y privkey --slot ... -w some/path.der -l --id ...
  </code></pre>