JSON WEB TOKEN to encrypt Your data in NODE JS 2022 (2024)

Applications used this time:

• vscode
• postman
• XAMPP (for windows) / LAMPP (for linux)
• node js / npm

before starting to program we have to install the jsonwebtoken package by writing the code in the terminal like this

npm i jsonwebtoken

in the .env file create a variable named SECRETE_TOKEN and fill it with your secret token as below:

# for JSON WEB TOKEN
SECRET_TOKEN=ThISIsSeCrEtETOkEN

3. Create New Token on Controller

previously import the jsonwebtoken package that was installed earlier and call the .env file like this

const jwt = require("jsonwebtoken");
require("dotenv").config();

in the userController we create a variable with the result of data encryption to which we will add the token we created and the expiration period

const token = await jwt.sign(
 {
 username: req.body.username,
 password: req.body.username,
 },
 process.env.SECRET_TOKEN,
 {
 expiresIn: "24h",
 }
);

4. Replace Token in Query Database

After creating the token variable, we replace the token in the database with req.body.username+req.body.password into the token variable that we created earlier, it looks like this:

Create New User

await model.user.create({
 username: req.body.username,
 password: req.body.password,
 token: token,
 })
 .then((result) => {
 res.status(201).json({
 message: "user successful created",
 data: {
 username: req.body.username,
 password: req.body.password,
 token: token,
 },
 });
});

Update User

await model.user.update(
 {
 username: req.body.username,
 password: req.body.password,
 token: token,
 },
 { where: { id: req.body.id } }
 );
 res.status(200).json({
 message: "update successful",
 data: {
 id: req.body.id,
 username: req.body.username,
 password: req.body.password,
 token: token,
 },
});

5. Test On Postman

Create New User

Update User

after creating a token with JWT in this article it will be easier for us to create authentication with middleware which we will discuss in the next article

See You ~~~