title: How do I create an ECDSA certificate with the OpenSSL command-line
body: <p>I'm building a server app in C++ that needs to accept a certificate containing an ECDSA public key.  It must validate the certificate and, upon verification, use the public key contained in the certificate to authenticate a message sent along with the certificate.  </p>
  
  <p>I have all this working using ECDSA keypairs generated on the fly - i.e. my code is working nicely - but now I need to do the certificate piece.  </p>
  
  <p>And I figured I could use OpenSSL's command-line to create the certificate which is installed on the client (along with the ECDSA private key in a separate file).</p>
  
  <p>Can anyone help?</p>