From 398f34b57f4d3a017eaef7fb2e56f2e06d1680d1 Mon Sep 17 00:00:00 2001
From: Franck Royer <franck@status.im>
Date: Thu, 26 Aug 2021 15:22:42 +1000
Subject: [PATCH] Fixed Buffer.concat error when using symmetric encryption in
 the browser

---
 CHANGELOG.md                      | 3 +++
 src/lib/waku_message/version_1.ts | 2 +-
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2f23985dec..b419a7cdd6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Changed
 - **Breaking**: Moved `startTime` and `endTime` for history queries to a `timeFilter` property as both or neither must be passed; passing only one parameter is not supported.
 
+### Fixed
+- Buffer concat error when using symmetric encryption in the browser.
+
 ## [0.11.0] - 2021-08-20
 
 ### Added
diff --git a/src/lib/waku_message/version_1.ts b/src/lib/waku_message/version_1.ts
index ca681579ef..95fa2922b5 100644
--- a/src/lib/waku_message/version_1.ts
+++ b/src/lib/waku_message/version_1.ts
@@ -147,7 +147,7 @@ export async function encryptSymmetric(
 
   // Returns `cipher | tag`
   const cipher = await symmetric.encrypt(iv, hexToBuf(key), Buffer.from(data));
-  return Buffer.concat([cipher, iv]);
+  return Buffer.concat([cipher, Buffer.from(iv)]);
 }
 
 /**