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How to protect node.js (server-side) deliverables from piracy?

Any server-side applications built in NodeJS for clients, that have often to be hosted on the client's servers. It also opens up the possibility of easy reverse-engineering or reuse of our apps without our awareness.

So, how do we protect the Node.js code against stealing business logic, and reusing them somewhere else?



Node.js is a cross-platform JavaScript runtime that provides a light, scalable and open-source server environment for building real-time web applications at the enterprise level also. Overall it increases the efficiency of the development process as it fills the gap between frontend and backend applications.

However, the Javascript can’t be protected and so protecting the Node.js deliverables from piracy can be challenging too. I do not see any industry-proven direct solution for that, but there are some best practices (workarounds!) that can be followed to increase the security of your code to an extent. Here is the list of techniques found on the Internet for our reference.

Obfuscation 

The process of transforming code to make it more difficult to understand while retaining its functionality. UglifyJS and JavaScript-Obfuscator are well-known tools.

Ref: https://obfuscator.io/

Code-signing 

A technique used to verify the authenticity of code by digitally signing it with a certificate. Node-Signer tool can be used to implement code signing in your Node.js applications.

Ref: https://github.com/sigstore/sigstore-js

License keys 

License keys are unique codes that are used to activate or authenticate software. By requiring users to enter a valid license key to use your software, you can limit unauthorized usage and distribution.

Ref: https://www.npmjs.com/package/nodejs-license-key

Watermarking 

A technique that adds unique identifiers to your code to help you track its usage. This can be useful for identifying pirated copies of your software and taking legal action against violators.

NPM Protect

Using a package manager like NPM can help protect your code by allowing you to control access to your code and limit distribution. By keeping your code in a private registry or only sharing it with trusted users, you can limit the risk of piracy

Ref: https://www.npmjs.com/package/code-protect

Conclusion
Experimenting above techniques may help find a suitable solution depending on core application design or, by using a combination of these techniques can make it more difficult for pirates to copy and distribute your code while protecting your intellectual property.

Lastly, Cloud-based apps are less susceptible to software piracy so a SaaS model licensing should be a modern alternative with out of box security features in my view.

Happy Solutioning!
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