Technical
What Is Zero-Knowledge Encryption?
Quick Answer
Zero-knowledge encryption means the service provider is technically unable to access your data — not just promising not to, but cryptographically prevented from doing so.
Detailed Explanation
Zero-knowledge is a design philosophy where the system is built so the operator has zero ability to access user data. This is different from traditional services that encrypt data but hold the keys (like email providers). With zero-knowledge: encryption keys are generated on the user's device, never shared with the server, and the server only processes encrypted data it cannot decrypt. zkChat implements this by generating keys in the browser and embedding them in URL fragments (which browsers never send to servers). Our servers literally cannot read your messages — it's not about trust, it's about math.
Related Questions
How Does End-to-End Encryption Work?
Your device encrypts the message before sending it. Only the recipient's device can decrypt it. The server in between only sees scrambled data it cannot read.
What Is Metadata and Why Does It Matter?
Metadata is data about your communications — who you talked to, when, how often, from where. It can reveal your relationships, habits, and activities even without reading message content.
Is End-to-End Encryption Really Secure?
Yes. Properly implemented E2EE using algorithms like AES-256-GCM is mathematically secure — breaking it would take longer than the age of the universe with current technology.
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