[Closes #55] Generate predictable MAC address (but avoid sneaky data leakage)

lib/classes/Utils.ts

@@ -12,6 +12,7 @@ import { GlobalPosition } from './public/interfaces/GlobalPosition';
 import { Quaternion } from './Quaternion';
 import { Vector3 } from './Vector3';
 import Timeout = NodeJS.Timeout;
+import * as crypto from 'crypto';
 
 export class Utils
 {
@@ -28,6 +29,11 @@ export class Utils
         return Buffer.from(str + '\0', 'utf8');
     }
 
+    static SHA1String(str: string): string
+    {
+        return crypto.createHash('sha1').update(str).digest('hex');
+    }
+
     static BufferToStringSimple(buf: Buffer): string
     {
         if (buf.length === 0)