From 18c0299aab07580e0dc1cf3348a195af4302792e Mon Sep 17 00:00:00 2001
From: shinigami-eyes <43276258+shinigami-eyes@users.noreply.github.com>
Date: Sat, 10 Jul 2021 10:18:45 +0000
Subject: [PATCH] Add comment

---
 extension/background.ts | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/extension/background.ts b/extension/background.ts
index f559bbd..5ee6847 100644
--- a/extension/background.ts
+++ b/extension/background.ts
@@ -573,6 +573,8 @@ async function encryptSubmission(plainObj: any): Promise<CipherSubmission> {
         hash: 'SHA-256'
     }, false, ['encrypt']);
 
+    // Since asymmetric encryption only supports limited data size, we encrypt data symmetrically
+    // and then protect the symmetric key asymmetrically.
     const symmetricKey = await crypto.subtle.generateKey(
         {
             name: 'AES-CBC',