Data Encryption & Hashing

Welcome to Data Encryption & Hashing! In today's digital world, protecting sensitive information is paramount. Whether it's user passwords, personal data, or financial details, securing this data is a core responsibility for any developer.

This lesson will equip you with the knowledge and tools to implement robust data protection strategies in your Node.js applications.

Before diving into techniques, let's understand two fundamental concepts:

• Encryption: A two-way process that transforms data (plaintext) into an unreadable format (ciphertext) using a key. It's reversible, meaning the ciphertext can be converted back to plaintext with the correct key.
• Hashing: A one-way process that transforms data of any size into a fixed-size string of characters (a hash value or digest). It's irreversible; you cannot get the original data back from its hash.

They serve different purposes!