How I built a file-sharing tool where even I can't read your files (zero-knowledge architecture in Next.js)

📰 Dev.to · Akshay Sharma

Learn how to build a zero-knowledge file-sharing tool using Next.js, ensuring end-to-end encryption and privacy

intermediate Published 14 Apr 2026

Action Steps

Build a Next.js application with end-to-end encryption using libraries like Crypto-JS
Configure a zero-knowledge architecture to ensure only the sender and recipient can access the files
Implement client-side encryption to protect files in transit and at rest
Use a secure storage solution like a cloud-based object store to store encrypted files
Test the application to ensure the zero-knowledge architecture is working correctly

Who Needs to Know This

Developers and engineers building secure file-sharing applications can benefit from this approach, as it ensures the privacy and security of sensitive files

Key Insight

💡 Zero-knowledge architecture ensures that even the developer cannot access the sensitive files, providing an additional layer of security and privacy