Cross Reference: /frameworks/base/tools/signedconfig

`Name`	`Date`	`Size`
Up to higher level directory
`debug_key.pem`	22-Oct-2020	`227`
`debug_public.pem`	22-Oct-2020	`178`
`debug_sign.sh`	22-Oct-2020	`209`
`gen_priv_key.sh`	22-Oct-2020	`250`
`prod_public.pem`	22-Oct-2020	`179`
`verify_b64.sh`	22-Oct-2020	`808`