Password hashing with bcrypt in Node.js - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to import bcrypt in a Node.js file.

Node.js

const bcrypt = require('[1]');

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Ahttp

Bcrypto

Cexpress

Dbcrypt

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'crypto' instead of 'bcrypt' for password hashing.

Forgetting to install bcrypt before requiring it.

We use require('bcrypt') to import the bcrypt library for password hashing.

2fill in blank

medium

Complete the code to hash a password asynchronously with bcrypt.

Node.js

const hashedPassword = await bcrypt.[1](password, 10);

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Acompare

BgenSalt

Chash

DhashSync

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'hashSync' which is synchronous instead of 'hash'.

Using 'compare' which is for checking passwords, not hashing.

Use bcrypt.hash to hash a password asynchronously with a salt rounds value.

3fill in blank

hard

Fix the error in the code to compare a plain password with a hashed password.

Node.js

const isMatch = await bcrypt.[1](plainPassword, hashedPassword);

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Acompare

BgenSalt

Chash

DhashSync

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'hash' instead of 'compare' to check passwords.

Using synchronous methods in async code.

Use bcrypt.compare to check if the plain password matches the hashed password.

4fill in blank

hard

Fill both blanks to generate a salt and then hash a password using that salt.

Node.js

const salt = await bcrypt.[1](12);
const hashed = await bcrypt.[2](password, salt);

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AgenSalt

Bhash

Ccompare

DhashSync

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'compare' instead of 'hash' for hashing.

Using synchronous methods in async code.

First generate a salt with genSalt, then hash the password with hash using that salt.

5fill in blank

hard

Fill all three blanks to create a function that hashes a password with 10 salt rounds and returns the hashed password.

Node.js

async function [1](password) {
  const salt = await bcrypt.[2](10);
  const hashed = await bcrypt.[3](password, salt);
  return hashed;
}

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AhashPassword

BgenSalt

Chash

Dcompare

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'compare' inside the hashing function.

Not awaiting asynchronous bcrypt methods.

The function is named hashPassword. It generates a salt with genSalt and hashes the password with hash.