'.$ltikey['kid'].''; echo ''.$ltikey['privatekey'].''; function __mod_lti_verify_private_key() { global $error; if (!function_exists('openssl_random_pseudo_bytes')) { $error[] = "openssl must be loaded for openssl_random_pseudo_bytes to function"; return null; } // Create the private key. $kid = bin2hex(openssl_random_pseudo_bytes(10)); $config = array( "digest_alg" => "sha256", "private_key_bits" => 2048, "private_key_type" => OPENSSL_KEYTYPE_RSA, ); $res = openssl_pkey_new($config); openssl_pkey_export($res, $privatekey); return array( 'kid' => $kid, 'privatekey' => $privatekey, ); } ?>