Re: [PATCH 0/6] Intel Secure Guard Extensions

[One Thousand Gnomes]

> Replay Protected Memory Block.  It's a device that allows someone to
> write to it and confirm that the write happened and the old contents
> is no longer available.  You could use it to implement an enclave that
> checks a password for your disk but only allows you to try a certain
> number of times.

rpmb is found in a load of hardware today notably MMC/SD cards. Android
phones often use it to store sensitive system data.

Alan