Initial Release v1.0.0: Full feature set with Docker automation, Nginx/Alpine stack

app/Helpers/EncryptionHelper.php

@@ -0,0 +1,54 @@
+<?php
+
+namespace App\Helpers;
+
+class EncryptionHelper {
+    
+    public static function encrypt($text) {
+        if (empty($text)) return '';
+        
+        $key = \App\Config\SiteConfig::getSecretKey();
+        
+        // Simple OpenSSL encryption
+        $iv_length = openssl_cipher_iv_length('aes-256-cbc');
+        $iv = openssl_random_pseudo_bytes($iv_length);
+        $encrypted = openssl_encrypt($text, 'aes-256-cbc', $key, 0, $iv);
+        
+        return base64_encode($encrypted . '::' . $iv);
+    }
+
+    public static function decrypt($text) {
+        if (empty($text)) return '';
+        
+        $key = \App\Config\SiteConfig::getSecretKey();
+        
+        try {
+            $decoded = base64_decode($text, true);
+            if ($decoded === false) return $text; // Not valid base64
+
+            $parts = explode('::', $decoded, 2);
+            if (count($parts) !== 2) {
+                return $text; // Not our encrypted format, likely legacy/plain
+            }
+
+            list($encrypted_data, $iv) = $parts;
+            return openssl_decrypt($encrypted_data, 'aes-256-cbc', $key, 0, $iv);
+        } catch (\Exception $e) {
+            return $text; // Fallback
+        }
+    }
+
+    public static function formatBytes($bytes, $precision = 2) { 
+        $units = array('B', 'KB', 'MB', 'GB', 'TB'); 
+    
+        $bytes = max($bytes, 0); 
+        $pow = floor(($bytes ? log($bytes) : 0) / log(1024)); 
+        $pow = min($pow, count($units) - 1); 
+    
+        // Uncomment one of the following alternatives
+        $bytes /= pow(1024, $pow); 
+        // $bytes /= (1 << (10 * $pow)); 
+    
+        return round($bytes, $precision) . ' ' . $units[$pow]; 
+    }
+}