UserManagementService getPassword/getDigestPassword always null

[GillesH ()]

Hello,

a submission already exist for this issue but without a solution.

UserManagementService mgtService  = (UserManagementService) col.getService("UserManagementService", "1.0")
User u  = mgtService.getUser("someone");
System.out.println(u.getName() >>>>> OK
System.out.println(u.getDigestPassword())  >>>>> ALWAYS NULL !
System.out.println(u.Password())  >>>>> ALWAYS NULL !

Is there a protection on theses method ?
Does I  change something in the conf.xml, I did not find it if it is the case ?
In advance many thanks for your help
Gilles