Sign Android App Bundle from Command Line

Probably you've already found a way to solve your problem. Nevertheless, since it may help someone in the future, I just wanted to say that I had the same problem and changing the hashing algorithm to SHA-256 helped me to overcome it.

jarsigner -verbose -sigalg SHA256withRSA -digestalg SHA-256 -keystore xample.jks bundle.aab keystoreAlias

I had the same error for another situation (or maybe the same).

I was trying to re-package *.aab bundle with some changes. At first, I used a zip or jar to create an unsigned archive. After that, I signed it using jarsigner tool.I found that *.aab is not an ordinary zip using bundletool

> java -jar bundletool.jar validate --bundle application.aab[BT:0.12.0] Error: The App Bundle zip file contains directory zip entry 'base/' which is not allowed.com.android.tools.build.bundletool.model.exceptions.BundleFileTypesException$DirectoryInBundleException: The App Bundle zip file contains directory zip entry 'base/' which is not allowed.        at com.android.tools.build.bundletool.validation.BundleZipValidator.validateBundleZipEntry(BundleZipValidator.java:29)        at com.android.tools.build.bundletool.validation.ValidatorRunner.lambda$validateBundleZipFile$1(ValidatorRunner.java:47)        at com.google.common.collect.ImmutableList.forEach(ImmutableList.java:406)        at com.android.tools.build.bundletool.validation.ValidatorRunner.validateBundleZipFile(ValidatorRunner.java:46)        at com.android.tools.build.bundletool.validation.AppBundleValidator.validateFile(AppBundleValidator.java:92)        at com.android.tools.build.bundletool.commands.ValidateBundleCommand.execute(ValidateBundleCommand.java:78)        at com.android.tools.build.bundletool.BundleToolMain.main(BundleToolMain.java:92)        at com.android.tools.build.bundletool.BundleToolMain.main(BundleToolMain.java:46)

So I used that utility to create *.aab, after that signed it using jarsigner.You need to zip the contents of base/* subfolder into a separated archive.

> java -jar bundletool.jar build-bundle --modules base.zip --output application.aab> jarsigner -keystore $KEYSTORE -storetype $STORETYPE -storepass $STOREPASS -digestalg SHA1 -sigalg SHA256withRSA application.zip $KEYALIAS> java -jar bundletool.jar validate --bundle application.aabApp Bundle information------------Feature modules:    Feature module: base            File: assets/META-INF/AIR/application.xml            ...