I am thinking of buying USB flash disk with Security Element(stores Private-Key/Secret-Key/X.509-Certificates) and some encrypted data(8 Megabyte). The disk has to be protected against cloning and possibly maintains logs of insert history with UNIX timestamp & USB Host ID when inserted.
I found YubiKey & NitroKey, but they does not have additional storage. Is there a USB Device like that satisfy above requirements.
(Or) Is there any cost effective SoC+Security Element Over USB with flash storage available to implement my requirement using Opensource?