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Sprowk
Recently created keystore with keytool and Google Play will show this message after uploading apk. Did something change? Last year it worked flawlessly.
Upload failed
You uploaded an APK with an invalid signature (learn more about signing). Error from apksigner: ERROR (Jar signer private): JAR signature META-private uses digest algorithm SHA-256 and signature algorithm RSA which is not supported on API Level(s) 14-17 for which this APK is being verified
There is some personal data in that message you linked.
Your key is out of date, that is what the warning means. You will probably need to update your android SDK and try again.
How are you signing the keys?
One of already answered quiestion recommended this:
go to "C:\Program files\Java\jdk1.8.0_111\bin" instead and use this:"keytool -genkey -v -keystore Your_personal_file_title.keystore -alias Your_personal_alias -keyalg RSA -keysize 2048 -validity 10000"
change yourpersonalfiletitle name and yourpersonal_alias (you’ll use the alias and password later so write it up somewhere you’ll remember)
Sprowk | 2018-10-08 21:14
OK, I see the problem. You are manually signing the keys.
