Encrypting API Responses in a MERN App with AES-256

📰 Medium · JavaScript

Learn how to encrypt API responses in a MERN app using AES-256, keeping your data secure without modifying React components

intermediate Published 20 Jun 2026

Action Steps

Install the crypto-js library using npm or yarn to handle AES encryption
Generate a secret key for encryption and decryption
Modify your Express API to encrypt responses using AES-256
Implement decryption in your React frontend using the same secret key
Test your encrypted API responses to ensure seamless integration

Who Needs to Know This

Backend developers and security engineers can benefit from this guide to enhance API security, while frontend developers can ensure seamless integration without modifying React components

Key Insight

💡 AES-256 encryption can be easily integrated into a MERN app to protect API responses without modifying React components

Key Takeaways

Learn how to encrypt API responses in a MERN app using AES-256, keeping your data secure without modifying React components

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Title: Encrypting API Responses in a MERN App with AES-256

URL Source: https://medium.com/@vg22chb0b35/encrypting-api-responses-in-a-mern-app-with-aes-256-0d7afdab8d38?source=rss------javascript-5

Published Time: 2026-06-20T07:06:54Z

Markdown Content:
# Encrypting API Responses in a MERN App with AES-256 | by Vinod Helambe | Jun, 2026 | Medium

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# Encrypting API Responses in a MERN App with AES-256

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`Without Touching Your React Components`

_A walkthrough API that your backend encrypts, your frontend decrypts automatically and your components never know the difference._

If you’ve ever opened your browser’s Network tab and watched your API happily hand over plaintext JSON to anyone who’s curious, you’ve probably wondered: _could I scramble this before it goes out?_

Turns out, yes we can and it’s less intimidating than it sounds. In this guide, we’ll build a small

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Encrypting API Responses in a MERN App with AES-256

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