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| author | Nicolas Boichat <drinkcat@google.com> | 2017-05-31 12:41:01 +0800 |
|---|---|---|
| committer | chrome-bot <chrome-bot@chromium.org> | 2017-06-06 08:52:16 -0700 |
| commit | 6d05a31a4442c0475e2bcfc33692089e78c73da2 (patch) | |
| tree | fa4d3314ad290b46bba48a948749e01303af8194 /board/hammer | |
| parent | 39db721f9ace13cc210278c88c3f364b5d67b5b8 (diff) | |
| download | chrome-ec-6d05a31a4442c0475e2bcfc33692089e78c73da2.tar.gz | |
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>
Diffstat (limited to 'board/hammer')
| -rw-r--r-- | board/hammer/board.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/board/hammer/board.h b/board/hammer/board.h index 3bb4d6c0f4..a003bcb6c5 100644 --- a/board/hammer/board.h +++ b/board/hammer/board.h @@ -196,6 +196,7 @@ */ #define CONFIG_ROLLBACK #define CONFIG_ROLLBACK_SECRET_SIZE 32 +#define CONFIG_ROLLBACK_SECRET_LOCAL_ENTROPY_SIZE 32 #define CONFIG_FLASH_PROTECT_RW #ifdef SECTION_IS_RW #undef CONFIG_ROLLBACK_UPDATE |