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Securing Web Services with WS-Security by David L. Remy, Jothy Rosenberg

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Chapter 5. Ensuring Confidentiality of XML Messages

Introduction to and Motivation for XML Encryption

In Chapter 4, “Safeguarding the Identity and Integrity of XML Messages,” we discussed XML Signature and its importance as a foundational XML security standard. In this chapter, we describe XML Encryption, which is designed to keep all or part of a SOAP message secret. Because XML Encryption followed XML Signature as a standard, the two are similar and share some of the same concepts, terminology, and XML elements. However, XML Encryption addresses different issues than XML Signature and, consequently, shows up in quite a different manner than XML Signature. We first discuss at a high level the relationship between XML Signature and XML Encryption ...

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