// generate keytools file
$ keytool -genkey -v -keystore mnjic.keystore -alias mnjic -keyalg RSA -keysize 2048 -validity 10000

// Sign app
$ cordova run android --release -- --keystore=mnjic.keystore --storePassword=abcd --alias=mnjic --password=abcd
// this command above will generate same entries as below mentioned in build.json
// review build.json
{ "android": { "debug": { "keystore": "../android.keystore", "storePassword": "android", "alias": "mykey1", "password" : "password", "keystoreType": "" }, "release": { "keystore": "../android.keystore", "storePassword": "", "alias": "mykey2", "password" : "password", "keystoreType": "" } } }