You are creating an XML Web service named LegalService. This service exposes two Web methods named SendMessage and ReceiveMessage. SendMessage is used to send highly confidential messages to its customers. ReceiveMessage is used to receive highly confidential messages from its customers and to process these messages for future use. You need to ensure that these messages cannot be intercepted and viewed by anyone other than LegalService and the customers who access LegalService. Which security mechanism should you use?
A.
SSL
B.
authorization
C.
authentication
D.
impersonation