Encrypt It. Compute on Ciphertext. Decrypt It.
Type two numbers below. They are encrypted, added while still encrypted, and decrypted — inside H33’s own FHE service (BFV, h33-xeon-api), not in this browser and not with a substitute cryptosystem. The page calls a server-side H33 edge that holds the authority; no credential ever reaches your browser. H33’s answer is shown beside the expected sum so you can check it.
What this proves. That H33’s production FHE service performed a homomorphic addition on ciphertext and returned the correct plaintext result. If the service does not execute it, this page says so and shows nothing — it will not compute a stand-in locally, and it no longer uses another cryptosystem to approximate the claim.
Step 1 · Your Data
Paste Sensitive Data
Try it now — Load Sample Mortgage Application
Real-world sensitive data: SSN, DOB, spouse, children, employer, income, bank accounts, credit score, loan amount
Paste →
Step 2 · Encrypted (Ciphertext)
This Is What the Server Sees
Waiting for encryption...
Step 3 · Compute on Ciphertext
AI Processes Without Decrypting
◆ Illustrative — this step shows sample results to depict what production FHE does. The H33 FHE Platform computes on encrypted data server-side.
Waiting for encrypted input...
Step 4 · Decrypt Result
Only You See the Answer
Waiting for computation...
Proof · What the Server Knew
How Production FHE Keeps Your Data Encrypted
What Production FHE Attests (illustrative)
Plaintext seen by serverNEVER
Encryption—
Computation—
Ciphertext hash (SHA3-256)—
Signature—
Total time—