Zero-Knowledge Encrypted Messaging: The Whatshush Privacy Web App
Client-side AES-256-GCM encryption with self-destructing secret notes.
1. The Engineering Challenge
Sharing sensitive API keys, passwords, and tokens via standard chat apps creates security vulnerabilities. Whatshush needed a simple web app where messages self-destruct after being read once.
2. Architectural Solution
We engineered Whatshush using client-side Web Crypto API. Encryption keys never leave the browser hash fragment, ensuring even the hosting server cannot read the payload.
Key Technical Architecture Highlights
- Client-side AES-256-GCM encryption and decryption
- Zero-knowledge backend storage storing only encrypted ciphertext blobs
- Atomic read-and-delete database operations
3. Business Impact & Results
Whatshush provides developers and privacy-conscious teams with a safe way to exchange confidential credentials without creating permanent logs.
Talk directly with an architect.
Bring us your product, platform, infrastructure, or AI challenge. We'll help you understand the technical path forward — what needs to change, what can stay, and what it will take to build it properly.