tree c9afd24160cd88163aa1cbe0c6d0d6a6fd331ecf
parent 8804be8cbeccfca8085a45c76c0d510f030d9061
author Kevin Cernekee <cernekee@chromium.org> 1438129504 -0700
committer ChromeOS Commit Bot <chromeos-commit-bot@chromium.org> 1439239332 +0000

Add "tpmc pcrextend" command to extend a PCR

This is useful for testing different configurations without repeatedly
reflashing the firmware, e.g.

    # stop tcsd
    # tpmc pcr 0
    0000000000000000000000000000000000000000
    # tpmc pcrextend 0 c42ac1c46f1d4e211c735cc7dfad4ff8391110e9
    # tpmc pcr 0
    865aedd337518e56f648440b81b4cbd9359fdff3
    <reboot and try another value>

BUG=none
BRANCH=none
TEST=manual

Change-Id: Ie5814ca2a3a5cf5a0eaf0ffee0385315db09bf25
Signed-off-by: Kevin Cernekee <cernekee@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/289009
Reviewed-by: Luigi Semenzato <semenzato@chromium.org>
Reviewed-by: Kees Cook <keescook@chromium.org>