Unsigned jars on RHEL4 rpm's

The following jars has not signed entries:

/usr/share/java/xml-commons-resolver.jar
/usr/share/java/repository.jboss.com/junit/3.8.2-brew/lib/junit.jar
/usr/share/java/libgcj-3.4.6.jar
/usr/share/java/struts-extras-1.3.8.jar
/usr/share/java/struts-extras.jar
/usr/share/java/junit-3.8.2.jar
/usr/share/java/servlet_api.jar
/usr/share/java/servletapi4.jar
/usr/share/java/jsp_1_2_api.jar
/usr/share/java/junit.jar
/usr/share/java/jsp_api.jar
/usr/share/java/struts.jar
/usr/share/java/libgcj-3.4.3.jar
/usr/share/java/xml-commons-resolver-1.1.jar
/usr/share/java/servlet_2_3_api.jar
/usr/share/java/servletapi4-4.0.4.jar
/usr/share/java/struts-1.3.8.jar

I'm not sure whether this is an ews issue as all the files are in the shared java directory.
However it was marked as a problem by the automated testsuite and most of the jars in /usr/shar/java
appears to be signed. So I would like to ask someone who knows whach must be signed to clarify, thanks.