Fix: prevent zero padding in writeRandomPadMax16 causing message delivery failures (#1706)

2025-08-26 06:11:58 -03:00
parent fb08f3cadd
commit 478b08bf79
1 changed files with 2 additions and 7 deletions
@@ -70,14 +70,9 @@ export const getKeyAuthor = (key: proto.IMessageKey | undefined | null, meId = '

 export const writeRandomPadMax16 = (msg: Uint8Array) => {
 	const pad = randomBytes(1)
+	const padLength = (pad[0]! & 0x0f) + 1

-	if (pad[0]) {
-		pad[0] &= 0xf
-	} else {
-		pad[0] = 0xf
-	}
-
-	return Buffer.concat([msg, Buffer.alloc(pad[0], pad[0])])
+	return Buffer.concat([msg, Buffer.alloc(padLength, padLength)])
 }

 export const unpadRandomMax16 = (e: Uint8Array | Buffer) => {