From 26019ac7041e04c0abb6ed34bf7e9c232295d868 Mon Sep 17 00:00:00 2001
From: "Alexander \"PapaTutuWawa" <papatutuwawa@polynom.me>
Date: Tue, 2 Aug 2022 15:43:39 +0200
Subject: [PATCH] style: Move the X3DH info string into a constant

---
 lib/src/x3dh.dart | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/src/x3dh.dart b/lib/src/x3dh.dart
index 72feadd..2ec5283 100644
--- a/lib/src/x3dh.dart
+++ b/lib/src/x3dh.dart
@@ -6,6 +6,7 @@ import 'package:omemo_dart/src/errors.dart';
 import 'package:omemo_dart/src/key.dart';
 
 /// The overarching assumption is that we use Ed25519 keys for the identity keys
+const omemoX3DHInfoString = 'OMEMO X3DH';
 
 /// Performed by Alice
 class X3DHAliceResult {
@@ -81,7 +82,7 @@ Future<List<int>> kdf(List<int> km) async {
   final output = await algorithm.deriveKey(
     secretKey: SecretKey(input),
     nonce: List<int>.filled(32, 0x00),
-    info: utf8.encode('OMEMO X3DH'),
+    info: utf8.encode(omemoX3DHInfoString),
   );
 
   return output.extractBytes();