diff --git a/src/main/java/org/gcube/common/authorization/client/helper/Authorizable.java b/src/main/java/org/gcube/common/authorization/client/helper/Authorizable.java
deleted file mode 100644
index 8eef113..0000000
--- a/src/main/java/org/gcube/common/authorization/client/helper/Authorizable.java
+++ /dev/null
@@ -1,8 +0,0 @@
-package org.gcube.common.authorization.client.helper;
-
-public interface Authorizable {
-
-	String getServiceName();
-	
-	String getServiceClass();
-}
diff --git a/src/main/java/org/gcube/common/authorization/client/helper/Authorization.java b/src/main/java/org/gcube/common/authorization/client/helper/Authorization.java
deleted file mode 100644
index f28d68d..0000000
--- a/src/main/java/org/gcube/common/authorization/client/helper/Authorization.java
+++ /dev/null
@@ -1,101 +0,0 @@
-package org.gcube.common.authorization.client.helper;
-
-import static org.gcube.common.authorization.client.Constants.authorizationService;
-
-import java.lang.reflect.Method;
-import java.util.Arrays;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
-
-import javassist.util.proxy.MethodHandler;
-import javassist.util.proxy.ProxyFactory;
-import javassist.util.proxy.ProxyObject;
-
-import org.gcube.common.authorization.client.exceptions.UnauthorizedAccessException;
-import org.gcube.common.authorization.library.AuthorizationEntry;
-import org.gcube.common.authorization.library.PolicyUtils;
-import org.gcube.common.authorization.library.annotations.AuthorizationControl;
-import org.gcube.common.authorization.library.policies.Action;
-import org.gcube.common.authorization.library.policies.Policy;
-import org.gcube.common.authorization.library.provider.SecurityTokenProvider;
-import org.gcube.common.authorization.library.provider.ServiceIdentifier;
-
-
-/**
- * enables authorization control on classes using proxies
- * 
- * when a user in not allowed to call a method annotated with {@link AuthorizationControl}
- * an {@link UnauthorizedAccessException} is thrown
- *  
- * @author lucio lelii
- *
- */
-public class Authorization {
-
-	private static Map<Class<?>, Class<?>> proxyClassMap = new HashMap<Class<?>, Class<?>>();
-
-	private static ProxyFactory proxyfactory = new ProxyFactory();
-
-	private static Class<?> getProxied(Class<?> proxyClass){
-		if (proxyClassMap.containsKey(proxyClass))
-			return proxyClassMap.get(proxyClass);
-
-		proxyfactory.setSuperclass(proxyClass);
-		Class<?> proxied=proxyfactory.createClass();
-		proxyClassMap.put(proxyClass, proxied);
-		return proxied;
-	}
-
-	public static <T extends Authorizable> T getAuthorizedInstance(Class<T> proxyClass){
-		Class<?> proxied = getProxied(proxyClass);
-		
-		Object obj;
-		try {
-			obj = proxied.newInstance();
-			MethodHandler handler = new MethodHandler() {
-
-				public Object invoke(Object self, Method thisMethod, Method proceed,
-						Object[] args) throws Throwable {
-					if (thisMethod.isAnnotationPresent(AuthorizationControl.class) && !thisMethod.getName().equals("getServiceName")
-							&& !thisMethod.getName().equals("getServiceClass")){
-						if (SecurityTokenProvider.instance.get()==null)
-							throw new RuntimeException("the Security token is not set");
-						Authorizable obj = (Authorizable) self;
-						Action[] modes = null;
-						if (thisMethod.isAnnotationPresent(AuthorizationControl.class))
-							modes = thisMethod.getAnnotation(AuthorizationControl.class).check();
-						checkAuthorization(obj.getServiceClass(), obj.getServiceName(), modes);
-					}					
-					return proceed.invoke(self, args);
-				}
-			};
-			((ProxyObject)obj).setHandler(handler);
-			return proxyClass.cast(obj);			
-		} catch (InstantiationException | IllegalAccessException e) {
-			throw new RuntimeException(e);
-		}
-	}
-
-	public static void checkAuthorization(String serviceClass, String serviceName, Action ... modes) throws Exception{
-		if (modes==null || modes.length==0) return;
-		if (SecurityTokenProvider.instance.get()==null)
-			throw new UnauthorizedAccessException("the Security token is not set");
-
-		List<Action> modesList = Arrays.asList(modes);
-		
-		AuthorizationEntry entry = authorizationService().get(SecurityTokenProvider.instance.get());
-
-		if (entry.getPolicies()!=null){
-			//DO we need a library identifier ??
-			ServiceIdentifier serviceIdentifier = new ServiceIdentifier(serviceClass, serviceName, "*");
-			for (Policy policy: entry.getPolicies())
-				if (PolicyUtils.isPolicyValidForClient(policy.getServiceAccess(), serviceIdentifier))
-					if (modesList.contains(policy.getMode()) || policy.getMode()==Action.ALL)
-						throw new UnauthorizedAccessException("the invoked method is protected by the Authorization system, cannot be invoked by "+entry.getClientInfo().getId());
-
-		}
-	}
-
-
-}