org.opensaml.common.impl
Class SAMLObjectContentReference

java.lang.Object
  org.opensaml.common.impl.SAMLObjectContentReference

All Implemented Interfaces:

ContentReference

public class SAMLObjectContentReference
extends Object
implements ContentReference

A content reference for SAML objects that will be signed. The reference is created per the SAML specification.

The default digest algorithm used is the value configured in the global security configuration's SecurityConfiguration.getSignatureReferenceDigestMethod(), if available, otherwise it will be SignatureConstants.ALGO_ID_DIGEST_SHA1.

The default set of transforms applied consists of SignatureConstants.TRANSFORM_ENVELOPED_SIGNATURE and SignatureConstants.TRANSFORM_C14N_EXCL_WITH_COMMENTS.

When generating an exclusive canonicalization transform, an inclusive namespace list is generated from the namespaces, retrieved from XMLObject.getNamespaces(), used by the SAML object to be signed and all of it's descendants.

Note that the SAML specification states that: 1) an exclusive canonicalization transform (either with or without comments) SHOULD be used. 2) transforms other than enveloped signature and one of the two exclusive canonicalizations SHOULD NOT be used. Careful consideration should be made before deviating from these recommendations.

Field Summary

private String	digestAlgorithm Algorithm used to digest the content.
private org.slf4j.Logger	log Class logger.
private SignableSAMLObject	signableObject SAMLObject this reference refers to.
private List<String>	transforms Transforms applied to the content.

Constructor Summary

SAMLObjectContentReference(SignableSAMLObject newSignableObject)
Constructor.

Method Summary

void	createReference(org.apache.xml.security.signature.XMLSignature signature)
String	getDigestAlgorithm() Gets the algorithm used to digest the content.
List<String>	getTransforms() Gets the transforms applied to the content prior to digest generation.
private void	populateNamespacePrefixes(Set<String> namespacePrefixes, XMLObject signatureContent) Populates the given set with the non-visibly used namespace prefixes used by the given XMLObject and all of its descendants, as determined by the signature content object's namespace manager.
private void	processExclusiveTransform(org.apache.xml.security.signature.XMLSignature signature, org.apache.xml.security.transforms.Transform transform) Populate the inclusive namspace prefixes on the specified Apache (exclusive) transform object.
void	setDigestAlgorithm(String newAlgorithm) Sets the algorithm used to digest the content.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

log

private final org.slf4j.Logger log

Class logger.

signableObject

private SignableSAMLObject signableObject

SAMLObject this reference refers to.

digestAlgorithm

private String digestAlgorithm

Algorithm used to digest the content.

transforms

private List<String> transforms

Transforms applied to the content.

Constructor Detail

SAMLObjectContentReference

public SAMLObjectContentReference(SignableSAMLObject newSignableObject)

Constructor.

Parameters:

newSignableObject - the SAMLObject this reference refers to

Method Detail

getTransforms

public List<String> getTransforms()

Gets the transforms applied to the content prior to digest generation.

Returns:

the transforms applied to the content prior to digest generation

getDigestAlgorithm

public String getDigestAlgorithm()

Gets the algorithm used to digest the content.

Returns:

the algorithm used to digest the content

setDigestAlgorithm

public void setDigestAlgorithm(String newAlgorithm)

Sets the algorithm used to digest the content.

Parameters:

newAlgorithm - the algorithm used to digest the content

createReference

public void createReference(org.apache.xml.security.signature.XMLSignature signature)

Specified by:

createReference in interface ContentReference

processExclusiveTransform

private void processExclusiveTransform(org.apache.xml.security.signature.XMLSignature signature,
                                       org.apache.xml.security.transforms.Transform transform)

Populate the inclusive namspace prefixes on the specified Apache (exclusive) transform object.

Parameters:

signature - the Apache XMLSignature object

transform - the Apache Transform object representing an exclusive transform

populateNamespacePrefixes

private void populateNamespacePrefixes(Set<String> namespacePrefixes,
                                       XMLObject signatureContent)

Populates the given set with the non-visibly used namespace prefixes used by the given XMLObject and all of its descendants, as determined by the signature content object's namespace manager.

Parameters:

namespacePrefixes - the namespace prefix set to be populated

signatureContent - the XMLObject whose namespace prefixes will be used to populate the set