diff --git a/composer.json b/composer.json
index f084d2d..cd85efe 100644
--- a/composer.json
+++ b/composer.json
@@ -24,8 +24,7 @@
     "require": {
         "php": ">=7.2.0",
         "ext-sodium": "*",
-        "ext-json": "*",
-        "illuminate/support": "^5.6"
+        "ext-json": "*"
     },
     "require-dev": {
         "phpunit/phpunit": "^7.0",
diff --git a/src/Encrypter.php b/src/Encrypter.php
index f9f3d0d..7a10347 100644
--- a/src/Encrypter.php
+++ b/src/Encrypter.php
@@ -2,6 +2,7 @@
 
 namespace LaravelAEAD;
 
+use Illuminate\Support\Arr;
 use LaravelAEAD\Ciphers;
 use LaravelAEAD\Contracts\Encrypter as EncrypterContract;
 use LaravelAEAD\Exceptions\DecryptException;
@@ -36,6 +37,11 @@ class Encrypter implements EncrypterContract
      */
     protected $cipher;
 
+    /**
+     * @var string $key
+     */
+    protected $key;
+
     /**
      * Create a new encrypter instance.
      *
@@ -50,6 +56,8 @@ public function __construct($key, $cipherName = 'XCHACHA20-POLY1305-IETF')
         // force the key into string.
         $key = (string)$key;
 
+        $this->key = $key;
+
         // create the instance of the cipher.
         $this->cipher = self::makeCipher($key, $cipherName);
     }
@@ -134,7 +142,7 @@ protected function decodePayload(string $payload) : array
         $payload = json_decode($this->decodeBase64($payload), true);
 
         // the payload should at least contain the 3 main keys.
-        if (!array_has($payload, ['value', 'nonce', 'ad'])) {
+        if (!Arr::has($payload, ['value', 'nonce', 'ad'])) {
             throw new DecryptException('Invalid Payload.');
         }
 
@@ -258,7 +266,7 @@ public static function getCiphers(): array
     public static function getCipherClass(string $cipherName): string
     {
         // retrieves the list of available ciphers
-        $cipherClass = array_get(self::getCiphers(), $cipherName, null);
+        $cipherClass = Arr::get(self::getCiphers(), $cipherName, null);
 
         // check if the cipher exists.
         if (!$cipherClass || !class_exists($cipherClass)) {
@@ -268,4 +276,8 @@ public static function getCipherClass(string $cipherName): string
         // returns the cipher class.
         return $cipherClass;
     }
-}
\ No newline at end of file
+
+    public function getKey(): string {
+        return $this->key;
+    }
+}
diff --git a/src/Providers/EncryptionServiceProvider.php b/src/Providers/EncryptionServiceProvider.php
index e6fbc8c..67b935d 100644
--- a/src/Providers/EncryptionServiceProvider.php
+++ b/src/Providers/EncryptionServiceProvider.php
@@ -5,6 +5,7 @@
 use LaravelAEAD\Encrypter;
 use Illuminate\Encryption\Encrypter as LaravelEncrypter;
 use Illuminate\Encryption\EncryptionServiceProvider as LaravelEncryptionServiceProvider;
+use Illuminate\Support\Arr;
 use Illuminate\Support\Str;
 use Illuminate\Contracts\Config\Repository as Config;
 
@@ -52,7 +53,7 @@ public function register()
      */
     protected function supported(string $cipher) : bool
     {
-        return array_has(Encrypter::getCiphers(), $cipher);
+        return Arr::has(Encrypter::getCiphers(), $cipher);
     }
 
     /**
@@ -80,4 +81,4 @@ protected function getConfigValue(string $key, $default = null)
         // retrieve the value for the key,
         return $value;
     }
-}
\ No newline at end of file
+}