title: How to load an RSA key from a PEM file and use it in python-crypto
body: <p>I have not found a way to load an RSA private key from a PEM file to use it in python-crypto (signature).</p>
  
  <p>python-openssl can load a PEM file but the PKey object can't be used to retrieved key information (p, q, ...) to use with Crypto.PublicKey.construct().</p>