Before you upload your aab file on the Play store, you should sign your aab again with your key.
Currently, AppBundle signing is available with the jarsigner, and it must be used 'SHA-256' algorithm to upload on the Google Play store.
- The apkSigner is not available for AppBundle
- Zipalign is not required when you sign AppBundle with the jarsigner
jarsiner command
jarsigner -verbose -sigalg SHA256withRSA -digestalg SHA-256 -keystore {keystore_path} {aab_path} {keystore_alias_name}
Example use case
jarsigner -verbose -sigalg SHA256withRSA -digestalg SHA-256 -keystore d:\keystore_file d:\aab_file keystore_alias_name
References
Generally, the jarsigner is installed on the below path
%JDK_HOME%\bin
Kindly check the below link to understand signing AppBundle with the jarsigner.
https://docs.oracle.com/javase/8/docs/technotes/tools/windows/jarsigner.html