Intel SGX, if you trust Intel. But the amount of code that runs on SGX is limited so usually you'd run only critical parts there. A practical example: https://

Intel SGX, if you trust Intel. But the amount of code that runs on SGX is limited so usually you'd run only critical parts there. A practical example: https://signal.org/blog/private-contact-discovery/ https://signal.org/blog/private-contact-discovery/