From df1d70e73f9f1c29c52684cb1338d872983302d7 Mon Sep 17 00:00:00 2001
From: Adrian Kunz <a.kunz@uni-kassel.de>
Date: Mon, 13 Nov 2023 11:16:01 +0100
Subject: [PATCH] fix(frontend): Better random task IDs

---
 frontend/src/app/assignment/services/task.service.ts | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/frontend/src/app/assignment/services/task.service.ts b/frontend/src/app/assignment/services/task.service.ts
index ce046b4a7..f49c6f22a 100644
--- a/frontend/src/app/assignment/services/task.service.ts
+++ b/frontend/src/app/assignment/services/task.service.ts
@@ -31,7 +31,10 @@ export class TaskService {
   }
 
   generateID(): string {
-    return (Date.now() + Math.random()).toString(36).replace('.', 'T').substring(0, 12);
+    // generate a random hex string with 16 characters (64 bit) securely
+    const array = new Uint8Array(8);
+    crypto.getRandomValues(array);
+    return Array.from(array, (byte) => byte.toString(16).padStart(2, '0')).join('');
   }
 
   createPointsCache(tasks: Task[], evaluations: Record<string, Evaluation | CreateEvaluationDto>): Record<string, number> {