Secure our website using JWT (JSON Web Token) in nodeJS or expressJS
Sandeep
Posted on December 18, 2021
here we are using JWT to secure our application or website from unauthenticated user they try to access our data.
In npmjs a library named is
jsonwebtoken
npm i jsonwebtoken
if we only check user isAuthenticated or not we simply pass the middleware in between request and response
auth.js
`export default function getTokenFromUser(req: Request) {
const authorization = req.headers.token;
var decoded = jwt.verify(authorization, 'secret');
if (!decoded) {
throw new TokenError("No Authorization Header");
}
try {
const token = decoded?.split("User data ")[1];
return token;
} catch {
throw new TokenError("Invalid Token Format");
}
}`
we simple pass this auth of in between req,res
app.post('/api/post',auth,(req,res)=>{
//if some operation on code we use middleware
const token=jwt.sign({
data: 'your data to store as token'
}, 'secret', { expiresIn: '1h' });
res.header('token',token).send("success")
});
we ensure that you can save your secret key in your config file.
💖 💪 🙅 🚩
Sandeep
Posted on December 18, 2021
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