Hello Serge, I see several issues with this patch:
sun/security/ec/ECPrivateKeyImpl.java - ECUtil class is not referenced in the ECPrivateKeyImpl class. Import can be removed org/jcp/xml/dsig/internal/dom/DOMKeyValue.java - DomKeyValue class should be updated to instantiate ECParameters and NamedCurve classes in the correct namespace This class is modified in the original JDK9 patch [1] but missed in the JDK11 and JDK8 because of different XML Dsig implementation. [1] - http://hg.openjdk.java.net/jdk9/jdk9/jdk/rev/87fac66a55b4 Regards Alexey
