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.