diff --git a/node/src/index.d.ts b/node/src/index.d.ts
index cc63aad..e386dad 100644
--- a/node/src/index.d.ts
+++ b/node/src/index.d.ts
@@ -1,4 +1,4 @@
 declare module '@wulkanowy/qr-node' {
   export function encode(password: string, content: string): string;
-  // export function decode(password: string, content: string): string;
-}
\ No newline at end of file
+  export function decode(password: string, content: string): string;
+}
diff --git a/node/src/index.js b/node/src/index.js
index e236cbb..5a6d2eb 100644
--- a/node/src/index.js
+++ b/node/src/index.js
@@ -7,27 +7,21 @@ const BASE64 = 'base64';
 const toArrayBuffer = (str) => new TextEncoder().encode(str);
 
 const encode = (password, content) => {
-  const pass = toArrayBuffer(password);
-  const cont = toArrayBuffer(content);
-  const cipher = crypto.createCipheriv(ALGORITHM, pass, Buffer.alloc(0));
-  let encrypted = cipher.update(cont, UTF8, BASE64);
+  const cipher = crypto.createCipheriv(ALGORITHM, toArrayBuffer(password), Buffer.alloc(0));
+  let encrypted = cipher.update(content, UTF8, BASE64);
   encrypted += cipher.final(BASE64);
   return encrypted;
 };
 
-/*
 const decode = (password, content) => {
-  const pass = toArrayBuffer(password);
-  const cont = toArrayBuffer(content);
-  const decipher = crypto.createDecipheriv(ALGORITHM, pass, Buffer.alloc(0));
-  let decrypted = decipher.update(cont, BASE64, UTF8);
+  const decipher = crypto.createDecipheriv(ALGORITHM, toArrayBuffer(password), Buffer.alloc(0));
+  let decrypted = decipher.update(content, BASE64, UTF8);
   decrypted += decipher.final(UTF8);
   return decrypted;
 };
-*/
 
 module.exports = {
   encode,
-  // decode,
+  decode,
   __esModule: true,
 };
diff --git a/node/src/test/test.js b/node/src/test/test.js
index 433405e..134231b 100644
--- a/node/src/test/test.js
+++ b/node/src/test/test.js
@@ -1,13 +1,20 @@
 const vulcanQR = require('../index');
 const assert = require('assert');
 
+const password = '0123456789ABCDEF';
+const content = 'CERT#https://api.fakelog.cf/Default/mobile-api#FK100000#ENDCERT';
+const base64 = '27Grk6d8ZDely5eeF7j2ngWrWV9eZa5Dz9ZmuiBavysDp74TCr6EHJOs6TaIXFh3HsROWSM11pv3cPvRGSi7Nw==';
+
 describe('encoder', () => {
   it('encodes', () => {
-    const password = '0123456789ABCDEF';
-    const content = 'CERT#https://api.fakelog.cf/Default/mobile-api#FK100000#ENDCERT';
-    const base64 = '27Grk6d8ZDely5eeF7j2ngWrWV9eZa5Dz9ZmuiBavysDp74TCr6EHJOs6TaIXFh3HsROWSM11pv3cPvRGSi7Nw==';
-
     const result = vulcanQR.encode(password, content);
     assert.equal(result, base64);
   });
 });
+
+describe('decoder', () => {
+  it('decodes', () => {
+    const result = vulcanQR.decode(password, base64);
+    assert.equal(result, content);
+  });
+});