Question 1

Is CryptoJS still safe to use in new projects?

Accepted Answer

No, it's discontinued and unmaintained, so it's not safe for new projects. For legacy code, use version 4.0.0 or later to leverage native crypto for random number generation, but migrate to native Web Crypto API for better security and support.

Question 2

How to encrypt data with AES using CryptoJS?

Accepted Answer

Import the AES module, then call `CryptoJS.AES.encrypt` with your plaintext and key, and convert to string. For example, `var ciphertext = CryptoJS.AES.encrypt('message', 'key').toString();` as shown in the plain text encryption example in the README.

Question 3

CryptoJS vs native crypto module: which is better?

Accepted Answer

Native crypto module is better for modern applications—it's built-in, more secure, and actively maintained. CryptoJS is only suitable for legacy support or environments lacking native crypto, but it adds unnecessary bloat otherwise.

Question 4

Can CryptoJS run in React Native?

Accepted Answer

Version 4.0.0 and above rely on native crypto, which might not be available in React Native, as noted in release notes. You may need polyfills or alternative libraries, making it unreliable for such environments.

Question 5

What are good alternatives to CryptoJS for JavaScript?

Accepted Answer

Use the Web Crypto API for browsers and Node.js's crypto module for server-side. For additional features or polyfills, consider libraries like 'node-forge' or 'sjcl', but native options are preferred for security and performance.

Question 6

How to reduce bundle size with CryptoJS?

Accepted Answer

Use modular imports to include only needed algorithms, such as `import sha256 from 'crypto-js/sha256';` instead of the full library. This is highlighted in the modular include examples to keep code minimal.

crypto-js

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