diff --git a/app/providers/CallProvider/CallProvider.tsx b/app/providers/CallProvider/CallProvider.tsx
index 36202f1..1367d79 100644
--- a/app/providers/CallProvider/CallProvider.tsx
+++ b/app/providers/CallProvider/CallProvider.tsx
@@ -12,6 +12,7 @@ import { modals } from "@mantine/modals";
 import { Button, Flex, Text } from "@mantine/core";
 import { useSound } from "@/app/hooks/useSound";
 import useWindow from "@/app/hooks/useWindow";
+import { enableAudioE2EE } from "./audioE2EE";
 
 export interface CallContextValue {
     call: (callable: string) => void;
@@ -345,6 +346,8 @@ export function CallProvider(props : CallProviderProps) {
             localStream.getTracks().forEach(track => {
                 peerConnectionRef.current?.addTrack(track, localStream);
             });
+
+            await enableAudioE2EE(peerConnectionRef.current, Buffer.from(sharedSecret, 'hex'));
             /**
              * Отправляем свой оффер другой стороне
              */
diff --git a/app/providers/CallProvider/audioE2EE.ts b/app/providers/CallProvider/audioE2EE.ts
new file mode 100644
index 0000000..a35b94d
--- /dev/null
+++ b/app/providers/CallProvider/audioE2EE.ts
@@ -0,0 +1,76 @@
+function toArrayBuffer(src: Buffer | Uint8Array): ArrayBuffer {
+  const u8 = src instanceof Uint8Array ? src : new Uint8Array(src);
+  return u8.buffer.slice(u8.byteOffset, u8.byteOffset + u8.byteLength) as ArrayBuffer;
+}
+
+export async function enableAudioE2EE(pc: RTCPeerConnection, keyBuffer: Buffer | Uint8Array) {
+  const raw = toArrayBuffer(keyBuffer);
+  if (raw.byteLength !== 32) throw new Error("E2EE key must be 32 bytes");
+
+  const key = await crypto.subtle.importKey(
+    "raw",
+    raw,
+    { name: "AES-CTR" },
+    false,
+    ["encrypt", "decrypt"]
+  );
+
+  const makeCounter = (ts: number, dir: number) => {
+    const counter = new Uint8Array(16);
+    const dv = new DataView(counter.buffer);
+    dv.setUint32(0, dir, false);              // разделяем направление
+    dv.setBigUint64(8, BigInt(ts), false);    // nonce из timestamp кадра
+    return counter;
+  };
+
+  const attachSender = (sender: RTCRtpSender) => {
+    // @ts-ignore Chromium/Electron API
+    if (!sender.createEncodedStreams) return;
+    // @ts-ignore
+    const { readable, writable } = sender.createEncodedStreams();
+
+    const enc = new TransformStream({
+      async transform(frame: any, controller) {
+        const counter = makeCounter(frame.timestamp ?? 0, 1);
+        const out = await crypto.subtle.encrypt(
+          { name: "AES-CTR", counter, length: 64 },
+          key,
+          frame.data
+        );
+        frame.data = new Uint8Array(out); // тот же размер
+        controller.enqueue(frame);
+      }
+    });
+
+    readable.pipeThrough(enc).pipeTo(writable).catch(() => {});
+  };
+
+  const attachReceiver = (receiver: RTCRtpReceiver) => {
+    // @ts-ignore Chromium/Electron API
+    if (!receiver.createEncodedStreams) return;
+    // @ts-ignore
+    const { readable, writable } = receiver.createEncodedStreams();
+
+    const dec = new TransformStream({
+      async transform(frame: any, controller) {
+        const counter = makeCounter(frame.timestamp ?? 0, 1);
+        const out = await crypto.subtle.decrypt(
+          { name: "AES-CTR", counter, length: 64 },
+          key,
+          frame.data
+        );
+        frame.data = new Uint8Array(out); // тот же размер
+        controller.enqueue(frame);
+      }
+    });
+
+    readable.pipeThrough(dec).pipeTo(writable).catch(() => {});
+  };
+
+  pc.getSenders().forEach((s) => s.track?.kind === "audio" && attachSender(s));
+  pc.getReceivers().forEach((r) => r.track?.kind === "audio" && attachReceiver(r));
+
+  pc.addEventListener("track", (e) => {
+    if (e.track.kind === "audio") attachReceiver(e.receiver);
+  });
+}
\ No newline at end of file
diff --git a/tsconfig.web.json b/tsconfig.web.json
index eb4c3b3..9b4503a 100644
--- a/tsconfig.web.json
+++ b/tsconfig.web.json
@@ -5,6 +5,7 @@
     "composite": true,
     "jsx": "react-jsx",
     "baseUrl": ".",
+    "lib": ["DOM"],
     "esModuleInterop": true,
     "types": ["electron-vite/node"],
     "paths": {