Install bcryptjs

• https://www.npmjs.com/package/bcryptjs ( 8L Weekly Downloads)

    npm i bcryptjs

Task Objective: Saving passwords in plain text is BAD practice.

• Encrypt the password and save it in DB.

    const bcrypt = require('bcryptjs');

    class Util {   

        static async getHashPassword(password){
            return await bcrypt.hash(password, 10)
        }

        static async comparePassword(plainText,hashPassword) {
            return await bcrypt.compare(plainText, hashPassword)
        }
    }

Task 1: During Registration, convert the plain text password to encrypted password.

    async function register(){
        //Register
        let user={name:"Naresh", "email":"n@gmail.com" ,password:"pass123"};
        console.log(user);

        //Encrypt password
        let encryptedPassword= await Util.getHashPassword(user.password);
        console.log(encryptedPassword);

        
    }
    register(); //test the register method

• Output

    //{ name: 'Naresh', password: 'pass123' }
    //$2a$10$mytiXZCF0qwpgxppdJs2r.GRfp.8nCcbQgoV3XL7IXueXwjnTlooe

Task 2: During Login, convert the plain input text password to encrypted password.

    async function login(){
        let user = {email:"n@gmail.com", password: "pass123"};
        let plainPassword = user.password;
        let encrytedPasswordInDB = "$2a$10$mytiXZCF0qwpgxppdJs2r.GRfp.8nCcbQgoV3XL7IXueXwjnTlooe";
        //compare plain password with hashed password
        let matched= await Util.comparePassword(plainPassword,encrytedPasswordInDB);
        console.log("Login Password Matched :" , matched);
        
    }
    login ();

• Output:

    Login Password Matched : true