[Requirement] Most [Comments] An XKMS service that provides only a Location service for self authenticating key information such as Digital Certificates does not require authentication. [Security Issue] 
Response Authentication
C o n f i d e n t i a l i t y
R e q u e s t A u t h e n t i c a t i o n
R e s p o n s e A u t h e n t i c a t i o n
P e r s i s t e n t A u t h e n t i c a t i o n
M e s s a g e C o r r e s p o n d e n c e
R e q u e s t R e p l a y y
D e n i a l o f S e r v i c e