lkml.org 
[lkml]   [2016]   [Apr]   [3]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH 0/8] Replay Protected Memory Block (RPMB) subsystem
From
Date
On 04/03/2016 02:42 AM, Tomas Winkler wrote:
> Few storage technology such is EMMC, UFS, and NVMe support RPMB
> hardware partition with common protocol and frame layout.
> The RPMB partition cannot be accessed via standard block layer, but
> by a set of specific commands: WRITE, READ, GET_WRITE_COUNTER, and
> PROGRAM_KEY.
> Such a partition provides authenticated and replay protected access,
> hence suitable as a secure storage.
>
> A storage device registers its RPMB hardware (emmc) partition or
> RPMB W-LUN (ufs) with the RPMB layer providing an implementation for
> send_rpmb_req() handler.
> Tere is as well simulation platform device. This is handy as an RPMB
> key can be programmed only once at storage device lifetime.
>
> The RPMB layer aims to provide in-kernel API for Trusted Execution
> Environment (TEE) devices that are capable to securely compute block
> frame signature. A TEE driver can claim rpmb interface, for example,
> via class_interface_register ().

What's the workflow? Does the TEE ask the kernel to do RPMB operations
for it and supply the kernel with the authenticated request blobs to
forward to the RPMB?

--Andy

\
 
 \ /
  Last update: 2016-04-03 15:41    [W:0.691 / U:0.128 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site