忍
✦ CRYPTOGRAPHICALLY PRIVATE ✦
Search Like a Ninja
Your queries never leave your device in plaintext.
Zero-knowledge retrieval — the server learns nothing.
Ready to search
Connecting to server...
✦ CRYPTOGRAPHICALLY PRIVATE ✦
Your queries never leave your device in plaintext.
Zero-knowledge retrieval — the server learns nothing.
Ready to search
Your search intent is transformed into a cryptographic noise vector before leaving your device.
The server processes thousands of documents simultaneously — it cannot determine which one you want.
Your browser decodes the encrypted response using your private key. Results appear instantly.
No query logs. No user profiles. No surveillance. Search like a ghost in the digital dark.
In feudal Japan, Chunin (中忍, "middle ninja") were the elite operatives of the shinobi world — more than raw recruits, yet freer than their commanding Jonin superiors. They were the invisible hand behind intelligence gathering: move without being seen, learn without leaving a trace.
A Chunin's greatest weapon was not a blade — it was information superiority with zero footprint. They could retrieve any intelligence from any location without ever revealing their presence or intent to those who might be watching.
Chuninja carries this spirit into the digital age. When you search here, you are the Chunin: your query retrieves knowledge cryptographically — the server processes thousands of documents simultaneously and cannot determine which one you wanted. You learn. They learn nothing.
Chuninja is powered by Private Information Retrieval (PIR) — a cryptographic protocol that lets you fetch documents from a server without the server learning which document was fetched. We use BERT embeddings to find semantically relevant results, then PIR to retrieve them privately.