diff --git a/include/items.php b/include/items.php
index 64aeabceab..6d4d30e7cb 100644
--- a/include/items.php
+++ b/include/items.php
@@ -33,9 +33,6 @@ require_once 'mod/share.php';
 require_once 'include/enotify.php';
 require_once 'include/group.php';
 
-/// @TODO one day with composer autoloader no more needed
-require_once 'library/defuse/php-encryption-1.2.1/Crypto.php';
-
 function construct_verb($item) {
 	if ($item['verb']) {
 		return $item['verb'];
diff --git a/mod/dfrn_notify.php b/mod/dfrn_notify.php
index e0e30a2488..c8dc093d17 100644
--- a/mod/dfrn_notify.php
+++ b/mod/dfrn_notify.php
@@ -11,10 +11,8 @@ use Friendica\Core\Config;
 use Friendica\Database\DBM;
 use Friendica\Protocol\DFRN;
 
-require_once('include/items.php');
-require_once('include/event.php');
-
-require_once('library/defuse/php-encryption-1.2.1/Crypto.php');
+require_once 'include/items.php';
+require_once 'include/event.php';
 
 function dfrn_notify_post(App $a) {
 	logger(__function__, LOGGER_TRACE);
@@ -185,8 +183,8 @@ function dfrn_notify_post(App $a) {
 				break;
 			case 2:
 				try {
-					$data = Crypto::decrypt(hex2bin($data), $final_key);
-				} catch (InvalidCiphertext $ex) { // VERY IMPORTANT
+					$data = \Defuse\Crypto\Crypto::decrypt(hex2bin($data), $final_key);
+				} catch (\Defuse\Crypto\Exception\WrongKeyOrModifiedCiphertextException $ex) { // VERY IMPORTANT
 					/*
 					 * Either:
 					 *   1. The ciphertext was modified by the attacker,
@@ -196,12 +194,9 @@ function dfrn_notify_post(App $a) {
 					 */
 					logger('The ciphertext has been tampered with!');
 					xml_status(0, 'The ciphertext has been tampered with!');
-				} catch (Ex\CryptoTestFailed $ex) {
+				} catch (\Defuse\Crypto\Exception\EnvironmentIsBrokenException $ex) {
 					logger('Cannot safely perform dencryption');
 					xml_status(0, 'CryptoTestFailed');
-				} catch (Ex\CannotPerformOperation $ex) {
-					logger('Cannot safely perform decryption');
-					xml_status(0, 'Cannot safely perform decryption');
 				}
 				break;
 			default:
diff --git a/src/Protocol/DFRN.php b/src/Protocol/DFRN.php
index f400d033ea..6ba8ed7d10 100644
--- a/src/Protocol/DFRN.php
+++ b/src/Protocol/DFRN.php
@@ -1296,26 +1296,20 @@ class DFRN
 				case 2:
 					// RINO 2 based on php-encryption
 					try {
-						$key = Crypto::createNewRandomKey();
-					} catch (CryptoTestFailed $ex) {
+						$key = \Defuse\Crypto\Key::createNewRandomKey();
+					} catch (\Defuse\Crypto\Exception\CryptoException $ex) {
 						logger('Cannot safely create a key');
 						return -4;
-					} catch (CannotPerformOperation $ex) {
-						logger('Cannot safely create a key');
-						return -5;
 					}
 					try {
-						$data = Crypto::encrypt($postvars['data'], $key);
-					} catch (CryptoTestFailed $ex) {
+						$data = \Defuse\Crypto\Crypto::encrypt($postvars['data'], $key);
+					} catch (\Defuse\Crypto\Exception\CryptoException $ex) {
 						logger('Cannot safely perform encryption');
 						return -6;
-					} catch (CannotPerformOperation $ex) {
-						logger('Cannot safely perform encryption');
-						return -7;
 					}
 					break;
 				default:
-					logger("rino: invalid requested verision '$rino_remote_version'");
+					logger("rino: invalid requested version '$rino_remote_version'");
 					return -8;
 			}