including default value for ADD argument in webcrypto aes-gcm algorithm

paulmillr · Apr 28, 2024 · 3dd2734 · 3dd2734
1 parent 4d74d8d
commit 3dd2734
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/src/webcrypto.ts b/src/webcrypto.ts
@@ -75,7 +75,8 @@ type BlockMode = (typeof mode)[keyof typeof mode];
 function getCryptParams(algo: BlockMode, nonce: Uint8Array, AAD?: Uint8Array) {
   if (algo === mode.CBC) return { name: mode.CBC, iv: nonce };
   if (algo === mode.CTR) return { name: mode.CTR, counter: nonce, length: 64 };
-  if (algo === mode.GCM) return { name: mode.GCM, iv: nonce, additionalData: AAD };
+  if (algo === mode.GCM)
+    return { name: mode.GCM, iv: nonce, additionalData: AAD || new Uint8Array(0) };
   throw new Error('unknown aes block mode');
 }