feat: Add API key authentication (#1254)

Closes #945

server/api/helpers/utils/generate-random-string.js

@@ -0,0 +1,30 @@
+/*!
+ * Copyright (c) 2024 PLANKA Software GmbH
+ * Licensed under the Fair Use License: https://github.com/plankanban/planka/blob/master/LICENSE.md
+ */
+
+const crypto = require('crypto');
+
+const CHARS = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz';
+
+module.exports = {
+  sync: true,
+
+  inputs: {
+    size: {
+      type: 'number',
+      required: true,
+    },
+  },
+
+  fn(inputs) {
+    const bytes = crypto.randomBytes(inputs.size);
+
+    let result = '';
+    for (let i = 0; i < inputs.size; i += 1) {
+      result += CHARS[bytes[i] % 62];
+    }
+
+    return result;
+  },
+};