Описание тега ws-trust

WS-Trust is a WS-* specification and OASIS standard that provides extensions to WS-Security

WS-Trust is a WS-* specification and OASIS standard that provides extensions to WS-Security, specifically dealing with the issuing, renewing, and validating of security tokens, as well as with ways to establish, assess the presence of, and broker trust relationships between participants in a secure message exchange.

WS-Trust defines a number of new elements, concepts and artifacts in support of that goal, including:

  • the concept of a Security Token Service (STS) - a web service that issues security tokens as defined in the WS-Security specification.
  • the formats of the messages used to request security tokens and the
    responses to those messages.
  • mechanisms for key exchange

http://en.wikipedia.org/wiki/WS-Trust