In my app, I get the package info with android.content.pm.PackageManager.getPackageInfo() and then check the signature in PackageInfo.signatures. It's easy to know what signature to check against when I sign the app myself, but how do I know what signature to expect when my app is signed by Amazon as part of the submission process?
The default signature applied to your app is a certificate supplied by Amazon that is unique to your developer account. Please raise a ContactUs (
https://developer.amazon.com/help/contactus.html) with us along with your app details and we will send you the signature (hash-key value) for your app.