feat: xor encryption

Author: LittleSwift

src/App.vue

@@ -15,6 +15,7 @@ import {petalCountLoggerInit} from "@/petalCountLogger.ts";
 import Api from "@/Api.vue";
 import '@/commands/builtin';
 import {gameChatUtilityInit} from "@/gameChat/gameChatUtility.ts";
+import XorEncryptor from "@/encryption/xor.ts";
 const { t } = useI18n();
 
 const webSocketServerAddress = import.meta.env.VITE_SERVER;
@@ -23,6 +24,9 @@ switch (import.meta.env.VITE_ENCRYPTION) {
   case 'none':
     webSocketService.applyEncryptor(new NoneEncryptor());
     break;
+  case 'xor':
+    webSocketService.applyEncryptor(new XorEncryptor(import.meta.env.VITE_ENCRYPTION_KEY));
+    break;
 }
 injectAPI().then(({ inventory, chatBase, chatOverflow }) => {
   petalCountLoggerInit(inventory);

src/encryption/xor.ts

@@ -0,0 +1,16 @@
+import {Encryptor} from "./encryption.ts";
+
+export default class XorEncryptor extends Encryptor{
+  private key: Uint8Array;
+  constructor(key: Uint8Array) {
+    super();
+    this.key = key;
+  }
+  async decrypt(data: Uint8Array) {
+    return data.map((byte, index) => byte ^ this.key[index % this.key.length]);
+  }
+
+  async encrypt(data: Uint8Array) {
+    return data.map((byte, index) => byte ^ this.key[index % this.key.length]);
+  }
+}