4 ms·

There is no reason to reuse the same key though...

• brenden2 7y ago
  If you used a different key for each datum then you wouldn't be able to do this type of analyses. This analyses depends on the property of the same values producing the same ciphertext, which also mean you're leaking information.
  • ummonk 7y ago
    No it doesn’t. The model is trained on unencrypted data. It is then run on encrypted data sent by the client to generate an encrypted classification. The client then uses its decryption key to decrypt the encrypted classification. This process is possible because the model is built to commute with encryption.