Error creating shaded jar: Invalid signature file digest for Manifest main attributes

Problem :


Exception in thread "main" java.lang.SecurityException: Invalid signature file digest for Manifest main attributes


Solution :

You need to add the following to pom.xml:


search for your maven-shade-plugin under <plugin> </plugin>

POM.xml

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<configuration> <filters> <filter> <artifact>*:*</artifact> <excludes> <exclude>META-INF/*.SF</exclude> <exclude>META-INF/*.DSA</exclude> <exclude>META-INF/*.RSA</exclude> </excludes> </filter> </filters> </configuration>

The above configuration filters all files in META-INF ending with .SF, .DSA, and .RSA for all artifacts (*:*) when creating uber-jar file.

The reason java.lang.SecurityException is raised is because some dependency jar files are signed jar files.  A jar file is signed by using jarsigner, which creates 2 additional files and places them in META-INF:
a signature file, with a .SF extension, and
a signature block file, with a .DSA, .RSA, or .EC extension.
Since the uber-jar file is created, the signatures and integrity of signed JAR files are no longer valid.  When the uber-jar file is executed, java.lang.SecurityException is thrown.