Downgrade zend-math / zend-crypt from 3.0 to 2.4.0

composer.json

@@ -3,8 +3,8 @@
   "description": "Class to generate scrypt password hashes that are compatible with the wg/scrypt Java implementation",
   "require": {
     "php": "^5.6 || ^7.0",
-    "zendframework/zend-crypt": "^3.0",
-    "zendframework/zend-math": "^3.0"
+    "zendframework/zend-crypt": "~2.4.0",
+    "zendframework/zend-math": "~2.4.0"
   },
   "suggest": {
     "ext-scrypt": "This module will be excruciatingly slow without it."

test/hash.php

+<?php
+    require __DIR__ . '/../vendor/autoload.php';
+
+    use ModDev\Password\Scrypt;
+
+    $scrypt = new Scrypt();
+    $securePass = $scrypt->create('123456789Aeroplanes');
+
+    echo $securePass;
\ No newline at end of file

test/verify.php

+<?php
+    require __DIR__ . '/../vendor/autoload.php';
+
+    use ModDev\Password\Scrypt;
+
+    $scrypt = new Scrypt();
+    echo $scrypt->verify('123456789Aeroplaness', '$s0$b0401$w290Ht6icdUjTU+ee6U7yQ==$q81kkJGf+xiuJOz/sEAgsOrKOiwOBiT7e/v9rJtdSlY=') ? 'OK' : 'Nok';