From cf354d58800c8e3ab2c2b65efa289ef2f5acb69f Mon Sep 17 00:00:00 2001
From: Tim Glasgow <tim.glasgow@atonalsoftware.com>
Date: Sun, 31 Jul 2022 23:27:37 -0500
Subject: [PATCH] cryptographically secure RNG

---
 squarenotsquare/src/libs/Random.js | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/squarenotsquare/src/libs/Random.js b/squarenotsquare/src/libs/Random.js
index aeea885..ceec7c6 100644
--- a/squarenotsquare/src/libs/Random.js
+++ b/squarenotsquare/src/libs/Random.js
@@ -1,11 +1,20 @@
+import 'react-native-get-random-values';
+
 export function generateKey() {
   let result = [];
   const characters = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
   let charactersLength = characters.length;
+
+  let uintArray = new Uint8Array(64);
+  let newKey = crypto.getRandomValues(uintArray);
   
   for (let i = 0; i < 64; i++) {
+    let newCharIndex = newKey[i];
+    while(newCharIndex > charactersLength){
+      newCharIndex -= charactersLength;
+    }
     result.push(
-      characters.charAt(Math.floor(Math.random() * charactersLength)),
+      characters.charAt(newCharIndex),
     );
   }