Nicolas Boichat 6d05a31a44 rollback: Include board-generated entropy when adding entropy
Mix in board-generated entropy with the externally provided one,
which should help make the per-device secret stronger.

BRANCH=none
BUG=b:38486828
TEST=reboot; rollbackaddent Hello => works fine when USB is connected,
     fails otherwise, as board-generated entropy relies on USB timing.

Change-Id: I314f44759c5f8b859913a748db95e9d42b5cdd11
Reviewed-on: https://chromium-review.googlesource.com/518609
Commit-Ready: Nicolas Boichat <drinkcat@chromium.org>
Tested-by: Nicolas Boichat <drinkcat@chromium.org>
Reviewed-by: Mattias Nissler <mnissler@chromium.org>
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
2017-06-06 08:52:16 -07:00
2016-11-10 21:28:33 -08:00
2012-05-11 09:11:52 -07:00
2014-04-02 19:58:53 +00:00
2015-12-08 20:05:05 -08:00

For an overview of the Embedded Controller firmware, refer to

http://www.chromium.org/chromium-os/2014-firmware-summit

For instructions on building from source, refer to

http://www.chromium.org/chromium-os/ec-development/getting-started-building-ec-images-quickly
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