Google’s Fully Homomorphic Encryption Compiler

Re:Google’s Fully Homomorphic Encryption Compiler – A Primer by vintermann on Tuesday February 14, 2023 @05:15AM (#34787515)

Sure. And then, after you've transferred 5 dollars to me, I say "What 5 dollars? What are you talking about?" and refuse to hand over the thing that you thought you bought.

Add perfect anonymity to the mix and I get to do it over and over again, too.

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Re:Google’s Fully Homomorphic Encryption Compiler – A Primer by macrolime on Tuesday February 14, 2023 @05:28AM (#34787583)

You could set it up so whoever initiates a transfer could get a kind of receipt that proves they initiated a transfer of X dollars to whomever.

So if Alice transfers 5 dollars to Bob and Bob says "What 5 dollars? What are you talking about?", then Alice could say, well here's my receipt, that's signed by my private key and the private key of the FHE bank, that shows that I sent the money to Bob and the FHE bank executed the transfer.

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Re:Google’s Fully Homomorphic Encryption Compiler – A Primer by ricksunscreen on Tuesday February 14, 2023 @11:21AM (#34791611)

You get this for free with FHE. In the event of a dispute, you can reveal the randomness and message that produce the public ciphertext given the user's public key.

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Re:Google’s Fully Homomorphic Encryption Compiler – A Primer by 3np on Tuesday February 14, 2023 @05:27AM (#34787577)

You could still design the scheme such that the sender can produce a cryptographic proof. Equally applicable for tax auditing etc.

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