title: How to load Base64 RSA keys in Crypto++
body: <p>I'm trying to write helper functions for a program I'm making and I need to return the keys as strings. Found a way to convert the RSA keys from PrivateKey/PublicKey to Base64 string.</p>
  
  <pre class="lang-cpp prettyprint-override"><code>int main()
  {
      //Generate params
      AutoSeededRandomPool rng;
      InvertibleRSAFunction params;
      params.Initialize(rng, 4096);
  
      //Generate Keys
      RSA::PrivateKey privKey(params);
      RSA::PublicKey pubKey(params);
  
      //Encode keys to Base64
      string encodedPriv, encodedPub;
  
      Base64Encoder privKeySink(new StringSink(encodedPriv));
      privKey.DEREncode(privKeySink);
  
      Base64Encoder pubKeySink(new StringSink(encodedPub));
      privKey.DEREncode(pubKeySink);
  
      RSA::PrivateKey pvKeyDecoded;
      RSA::PublicKey pbKeyDecoded;
  
      //how to decode...
  
      system("pause");
      return 0;
  }
  </code></pre>
  
  <p>Now, how do I load the encoded keys back? I wasn't able to find any information on that.</p>