Devices use signing information to check an application's source
and validity before allowing it to access protected APIs. For
test purposes, you can create a signing key pair to sign an
application. The keys are as follows: A private key that is used
to create a digital signature, or certificate. A public key that
anyone can use to verify the authenticity of the digital
signature. You can create a key pair with the Keystores Manager
as described in Managing Keystores and Key Pairs.