signer: fix accessory_rwsig signing
Require that the container passed in is the one containing
the specified key, and no other key. So if only one key is
present it must be the specified key.
BUG=chromium:863464
TEST=run locally
BRANCH=None
Change-Id: Ieeca5773f35b7bf92beae8a2192ed6e6fd9008e6
Reviewed-on: https://chromium-review.googlesource.com/1136910
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Tested-by: Nick Sanders <nsanders@chromium.org>
Reviewed-by: Bob Moragues <moragues@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
1 file changed
