Research Paper On Implementation Issues In Xml

The following capabilities are particularly useful. However, we have encountered a variety of issues relating to the use of XML Signature and XML Encryption both separately and in combination. While real problems in the field have been rare to date, it is our expectation that as applications begin to take advantage of the capabilities of these specifications and the ones that use them, problems will become more frequent.Failure to resolve these issues, especially the ones causing spurious validation errors, could lead to abandonment of their use.An example would be when a SAML assertion is signed and then carried somewhere in a SOAP message.

This section describes issues relating to the use of XML Signature.

Our concerns about Canonicalization Algorithms relate mostly to the handling of namespace declarations, which in fact is the primary difference between the two most commonly implemented Canonicalization Algorithms.

In both cases, foo will be assigned the same value and will be included under the signature, but since it will appear within a different element, the signature value computed will be different.

Exclusive Canonicalization is also subject to the security risk that the namespace declarations will not be included under the signature if the prefix is used with an element or attribute value.

We have been shipping our implementations of XML Signature and XML Encryption in our products for several years now.

This paper reflects our experiences in implementing these standards, our customers experiences in using them and our experiences defining other standards which normatively reference them.It could be something as simple as a run away script or learning how to better use E-utilities, for more efficient work such that your work does not impact the ability of other researchers to also use our site.To restore access and understand how to better interact with our site to avoid this in the future, please have your system administrator contact [email protected] include SAML, XACML, Digital Signature Services, SPML, WS-Security, all developed at OASIS and the Basic Security Profile, developed at WS-I.Our uses of XML and XML security are primarily in the context of network protocols and our requirements are primarily shaped by the characteristics of such environments.We use cookies to make interactions with our website easy and meaningful, to better understand the use of our services, and to tailor advertising.For further information, including about cookie settings, please read our Cookie Policy .Consider signing this with Exclusive Canonicalization, including the foo prefix in the Inclusive Namespaces Prefix List.If an intermediary introduces the use of this namespace prefix in an ancestor, then the signature will break because xmlns:foo will be canonicalized with the To Be Signed element instead of the Data element.Exclusive XML Canonicalization retains only namespaces which are visibly used in the portion of the XML document being signed.This works extremely well when a self-contained XML document is constructed, signed and then inserted into some other XML document.


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