Re: The key is not stored
"Because I don't believe this is possible without some information unwittingly leaking out from the encrypted data due to a fault in the encryption algorithm"
I don't even pretend to understand homomorphic encryption, but that sir, is the logical fallacy of personal incredulity.
"The argument from incredulity is a logical fallacy that occurs when someone decides that something did not happen, because they cannot personally understand how it could happen." - Rational Wiki