<?phphttps://imgur.com/yaJ1fQhhttps://imgur.com/yaJ1fQh
/*
Signature all fucked up...
*/
error_reporting(E_ALL);
ini_set('display_errors', 1);

  $image = new Imagick();
  $draw = new ImagickDraw();
  $pixel = new ImagickPixel('white');

  //Public key cryptography
  $rsakeypair = openssl_pkey_new(array(
    "private_key_bits" => 2048,
    "private_key_type" => OPENSSL_KEYTYPE_RSA,
));
  openssl_pkey_export($rsakeypair, $privatekey);
  $details = openssl_pkey_get_details($rsakeypair);
  $publickey = $details['key'];

  $fingerprint = hash("md5", $publickey);
  $data = $fingerprint . "data data data";
  $data = str_replace(' ', '', $data);
  openssl_sign($data, $signature, $privatekey, OPENSSL_ALGO_MD5);
  $verify = openssl_verify($data, $signature, $publickey,
    "md5WithRSAEncryption");

  $image->newImage(800, 350, $pixel);
  $draw->setFillColor('black');
  $draw->setFont('Bookman-DemiItalic');
  $draw->setFontSize(12);

  $image->annotateImage($draw, 10, 10, 0, "Fingerprint : " . $fingerprint);
  $image->annotateImage($draw, 10, 20, 0, "Signature : " . $signature);
  $image->annotateImage($draw, 10, 250, 0, "Verify : " . $verify);

  $image->setImageFormat('png');

  header('Content-type: image/png');
  echo $image;
?>