diff --git a/src/core/operations/PseudoRandomNumberGenerator.mjs b/src/core/operations/PseudoRandomNumberGenerator.mjs
index 033aa859..53150566 100644
--- a/src/core/operations/PseudoRandomNumberGenerator.mjs
+++ b/src/core/operations/PseudoRandomNumberGenerator.mjs
@@ -52,8 +52,12 @@ class PseudoRandomNumberGenerator extends Operation {
         let bytes;
 
         if (isWorkerEnvironment() && self.crypto) {
-            bytes = self.crypto.getRandomValues(new Uint8Array(numBytes));
-            bytes = Utils.arrayBufferToStr(bytes.buffer);
+            bytes = new ArrayBuffer(numBytes);
+            const CHUNK_SIZE = 65536;
+            for (let i = 0; i < numBytes; i += CHUNK_SIZE) {
+                self.crypto.getRandomValues(new Uint8Array(bytes, i, Math.min(numBytes - i, CHUNK_SIZE)));
+            }
+            bytes = Utils.arrayBufferToStr(bytes);
         } else {
             bytes = forge.random.getBytesSync(numBytes);
         }