2 · Pick transactions to score (up to 5 at a time — this sample stream runs ~10% fraud; real traffic is ~0.5%)
| Amount | Merchant | Category | Cardholder | Location | When | Truth | Verdict |
|---|
The browser generates the CKKS key pair and evaluation keys, keeps the secret key, and uploads only the evaluation material (cc + mk + rk ≈ 1.9 GB, once per session). The server can compute on your ciphertext but can never read it.
| Amount | Merchant | Category | Cardholder | Location | When | Truth | Verdict |
|---|