Interface Reference

All Superinterfaces:

URIReference, XMLStructure

public interface Reference
extends URIReference, XMLStructure

<element name="Reference" type="ds:ReferenceType"/>
 <complexType name="ReferenceType">
   <sequence>
     <element ref="ds:Transforms" minOccurs="0"/>
     <element ref="ds:DigestMethod"/>
     <element ref="ds:DigestValue"/>
   </sequence>
   <attribute name="Id" type="ID" use="optional"/>
   <attribute name="URI" type="anyURI" use="optional"/>
   <attribute name="Type" type="anyURI" use="optional"/>
 </complexType>

 <element name="DigestValue" type="ds:DigestValueType"/>
 <simpleType name="DigestValueType">
   <restriction base="base64Binary"/>
 </simpleType>

XMLSignatureFactory factory = XMLSignatureFactory.getInstance("DOM");
   Reference ref = factory.newReference
     ("http://www.ietf.org/rfc/rfc3275.txt",
      factory.newDigestMethod(DigestMethod.SHA1, null));

Since:

1.6

See Also:

XMLSignatureFactory.newReference(String, DigestMethod), XMLSignatureFactory.newReference(String, DigestMethod, List, String, String)

Methods

getTransforms

List getTransforms()

Returns an unmodifiable list of Transforms that are contained in this Reference.

Returns:

an unmodifiable list of Transforms (may be empty but never null)

getDigestMethod

DigestMethod getDigestMethod()

Returns the digest method of this Reference.

Returns:

the digest method

getId

String getId()

Returns the optional Id attribute of this Reference, which permits this reference to be referenced from elsewhere.

Returns:

the Id attribute (may be null if not specified)

getDigestValue

byte[] getDigestValue()

Returns the digest value of this Reference.

Returns:

the raw digest value, or null if this reference has not been digested yet. Each invocation of this method returns a new clone to protect against subsequent modification.

getCalculatedDigestValue

byte[] getCalculatedDigestValue()

Returns the calculated digest value of this Reference after a validation operation. This method is useful for debugging if the reference fails to validate.

Returns:

the calculated digest value, or null if this reference has not been validated yet. Each invocation of this method returns a new clone to protect against subsequent modification.

validate

boolean validate(XMLValidateContext validateContext)
          throws XMLSignatureException

Parameters:

validateContext - the validating context

Returns:

true if this reference was validated successfully; false otherwise

Throws:

NullPointerException - if validateContext is null

XMLSignatureException - if an unexpected exception occurs while validating the reference

getDereferencedData

Data getDereferencedData()

Returns the dereferenced data, if reference caching is enabled. This is the result of dereferencing the URI of this reference during a validation or generation operation.

Returns:

the dereferenced data, or null if reference caching is not enabled or this reference has not been generated or validated

getDigestInputStream

InputStream getDigestInputStream()

Returns the pre-digested input stream, if reference caching is enabled. This is the input to the digest operation during a validation or signing operation.

Returns:

an input stream containing the pre-digested input, or null if reference caching is not enabled or this reference has not been generated or validated