google3 changes required for COS

As part of the Cusky signing design, we carry custom changes to the script in a fork of vboot_reference repository on google3.
To move the signing behavior from the BC to the BE, we will need to
port those changes from google3 to here.

The custom changes being ported here are the ones made in cl/316911016,
cl/317144168 and cl/318860928.

TEST=presubmit; merged signer container with BE container, patched these
changes in and ran this script (via in

Change-Id: Id3ecd8b5cf056d244f8cfd89f65d9f13322b0998
Tested-by: Cusky Presubmit Bot <>
Reviewed-by: Robert Kolchmeyer <>
Tested-by: Cusky QA Presubmit Bot <>
1 file changed