Add a script to generate a keypair for signing Rose RW firmware.

Rose decided to leverage the key format of Hammer therefore this script calls
Hammer's one to generate a key pair and renames them to key_rose*.

BUG=b:37693819
TEST=None
BRANCH=None

Change-Id: I1f31afe89a00895434a169401ab76b594ad0a403
Reviewed-on: https://chromium-review.googlesource.com/529504
Commit-Ready: Wei-Ning Huang <wnhuang@chromium.org>
Tested-by: Marco Chen <marcochen@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
1 file changed