Added encryption func + test

Author: AmitBu

src/Utils.php

@@ -66,7 +66,7 @@ public static function serialize($obj)
 
     public static function decrypt($cipherText, $cipherKey)
     {
-        $key = mb_convert_encoding(substr($cipherKey, 0, 32), "utf-8");
+        $key = mb_convert_encoding(substr($cipherKey, 0, AES_KEY_SIZE), "utf-8");
         $contents = hex2bin($cipherText);
 
         $iv = substr($contents, 0, BLOCK_SIZE);
@@ -79,4 +79,16 @@ public static function decrypt($cipherText, $cipherKey)
             return "";
         }
     }
+
+    public static function encrypt($plainText, $cipherKey) {
+        $iv = openssl_random_pseudo_bytes(BLOCK_SIZE);
+
+        if ($encrypted = openssl_encrypt($plainText, ALGORITHM, $cipherKey, true, $iv)) {
+            return bin2hex($iv) . bin2hex($encrypted);
+        } else {
+            Logger::debug("Decrypt error", openssl_error_string());
+            return "";
+        }
+
+    }
 }

tests/SecureNativeTest.php

@@ -57,11 +57,21 @@ public function testBasicVerify()
         $this->assertEquals($response, new VerifyResult());
     }
 
-    public function testDecription() {
+    public function testDecryption()
+    {
         $cookie = "821cb59a6647f1edf597956243e564b00c120f8ac1674a153fbd707da0707fb236ea040d1665f3d294aa1943afbae1b26b2b795a127f883ec221c10c881a147bb8acb7e760cd6f04edc21c396ee1f6c9627d9bf1315c484a970ce8930c2ed1011af7e8569325c7edcdf70396f1abca8486eabec24567bf215d2e60382c40e5c42af075379dacdf959cb3fef74f9c9d15";
         $apikey = "6EA4915349C0AAC6F6572DA4F6B00C42DAD33E75";
         $d = Utils::decrypt($cookie, $apikey);
         $e = "{\"cid\":\"198a41ff-a10f-4cda-a2f3-a9ca80c0703b\",\"fp\":\"6d8cabd95987f8318b1fe01593d5c2a5.24700f9f1986800ab4fcc880530dd0ed\"}";
         $this->assertEquals($e, $d);
     }
+
+    public function testEncrypt()
+    {
+        $api_key = '6EA4915349C0AAC6F6572DA4F6B00C42DAD33E75';
+        $data = "{\"cid\":\"198a41ff-a10f-4cda-a2f3-a9ca80c0703b\",\"fp\":\"6d8cabd95987f8318b1fe01593d5c2a5.24700f9f1986800ab4fcc880530dd0ed\"}";
+        $enc = Utils::encrypt($data, $api_key);
+        $dec = Utils::decrypt($enc, $api_key);
+        $this->assertEquals($data, $dec);
+    }
 }