WS-Trust

WS-Trust

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.

The WS-Trust specification was authored by representatives of a number of companies, and was [http://www.oasis-open.org/archives/announce/200703/msg00004.html approved by OASIS] as a standard in March 2007.

Using the extensions defined in WS-Trust, applications can engage in secure communication designed to work within the Web services framework.

Overview

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

WS-Trust is then implemented within Web services libraries, provided by vendors or by open source collaborative efforts. Web services frameworks that implement the WS-Trust protocols for token request include: Microsoft's Windows Communication Foundation (WCF), Sun's WSIT framework, and others. In addition, vendors or other groups may deliver products that act as a Security Token Service, or STS. [http://labs.biztalk.net Microsoft's BizTalk Services] is one such service, available online today. Ping Identity Corporation also markets an STS.

Authors

The companies involved in defining WS-Trust were: including Actional Corporation, BEA Systems, Inc., Computer Associates International, Inc., International Business Machines Corporation, Layer 7 Technologies, Microsoft Corporation, Oblix Inc., OpenNetwork Technologies Inc., Ping Identity Corporation, Reactivity Inc., RSA Security Inc., and VeriSign Inc.

External links

* [http://docs.oasis-open.org/ws-sx/ws-trust/v1.3/ws-trust.html WS-Trust specification document, v1.3]
* [http://www.oasis-open.org/committees/tc_home.php?wg_abbrev=ws-sx OASIS' Web Services Secure Exchange (WS-SX) Technical Committee]
* [http://www.ibm.com/developerworks/library/specification/ws-trust/ IBM's page on Web Services Trust Language]
*WS-Trust specification document, February 2005 ("outdated") ( [http://specs.xmlsoap.org/ws/2005/02/trust/WS-Trust.pdf XMLsoap.org] ) ( [http://download.boulder.ibm.com/ibmdl/pub/software/dw/specs/ws-trust/ws-trust.pdf IBM] )
* WS-Trust specification v1.0, December 2002 ("outdated") ( [http://www.verisign.com/wss/WS-Trust.pdf Verisign] )

ee also

*Web Services
* List of Web service specifications
* [http://channel9.msdn.com/ShowPost.aspx?PostID=241455 Video explanation of WS-Trust]


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