EFS: Add key generator for EC EFS

This patch adds a script which generates a key pair for signing
& verifying EC-RW copies.

BUG=b:66956286
BRANCH=none
TEST=Verify the script generates indented key pair

Change-Id: Ia5aff7130587d4f1e18bcdfa514a953caa0cf183
Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/731824
Reviewed-by: C Shapiro <shapiroc@google.com>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
1 file changed