User Authentication in Node.js – Coding in Telugu

1. Passport.js for Authentication:

• Passport.js is a popular authentication middleware for Node.js.
• Supports various authentication strategies (Local, OAuth, JWT).

// Example: Setting up Passport.js Local Strategy
const passport = require('passport');
const LocalStrategy = require('passport-local').Strategy;

passport.use(new LocalStrategy(
    (username, password, done) => {
        // Check username and password
        // Call done() with user object on success, null on failure
    }
));

2. Hashing Passwords:

• Never store plain-text passwords in databases.
• Utilize hashing algorithms (e.g., bcrypt) for password security.

// Example: Hashing Passwords with bcrypt
const bcrypt = require('bcrypt');
const saltRounds = 10;

bcrypt.hash('user_password', saltRounds, (err, hash) => {
    if (err) throw err;
    // Store hash in the database
});

3. Session Management and Cookies:

• Sessions store user data on the server.
• Use secure cookies for session management.

// Example: Setting up Express.js with Express Session and Passport.js
const express = require('express');
const session = require('express-session');
const passport = require('passport');

const app = express();

app.use(session({ secret: 'your-secret-key', resave: true, saveUninitialized: true }));
app.use(passport.initialize());
app.use(passport.session());

Q: Why is user authentication important in web applications?
A: User authentication is crucial for verifying the identity of users and securing access to sensitive data, ensuring the integrity and security of web applications.

Q: What is Passport.js, and how does it work in Node.js?
A: Passport.js is an authentication middleware for Node.js. It supports various authentication strategies and makes it easy to implement authentication in Node.js applications.

Q: Why is password hashing necessary, and how is it done in Node.js?
A: Password hashing is essential for security, preventing the storage of plain-text passwords. In Node.js, libraries like bcrypt are commonly used to hash passwords.

Node.js user authentication tutorial
Implementing Passport.js in Node.js
Local authentication strategy in Passport.js
Secure password hashing in Node.js
bcrypt for password security in Node.js

Session management in Express.js
Using cookies for user sessions in Node.js
Best practices for user authentication in Node.js
Enhancing security with Passport.js in Node.js
Node.js authentication strategies comparison

User Authentication in Node.js – Learn Coding in Telugu, Learn Programming in Telugu, Learn Node Js in Telugu, Learn JavaScript in Telugu