Generate a self-signed certificate:

    key  = Ronin::Support::Crypto::Key::RSA.random
    cert = Ronin::Support::Crypto::Cert.generate(
      key: key,
      subject: {
        common_name:         'localhost',
        organization:        'Test Co..',
        organizational_unit: 'Test Dept',
        locality:            'Test City',
        state:               'XX',
        country:             'US'
      },
      extensions: {
        'subjectAltName' => 'DNS: localhost, IP: 127.0.0.1'
      }
    )
    key.save('cert.key')
    cert.save('cert.pem')