http://forums.w5j6stm77zs6652pgsij4awcjeel3eco7kvipheu6mtr623eyyehj4yd.onion/t/ram-encryption-confidential-cloud/635
**Describe the solution you'd like**
> a high-speed device, connected via a serial or perhaps USB interface, to manage authentication. This device can send an authentication challenge, receive a response, measure its timing, and verify it.