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java.lang.Objectorg.apache.xml.security.transforms.TransformSpi
org.apache.xml.security.transforms.implementations.TransformBase64Decode
public class TransformBase64Decode
Implements the http://www.w3.org/2000/09/xmldsig#base64
decoding
transform.
The normative specification for base64 decoding transforms is [MIME]. The base64 Transform element has no content. The input is decoded by the algorithms. This transform is useful if an application needs to sign the raw data associated with the encoded content of an element.
This transform requires an octet stream for input. If an XPath node-set (or sufficiently functional alternative) is given as input, then it is converted to an octet stream by performing operations logically equivalent to 1) applying an XPath transform with expression self::text(), then 2) taking the string-value of the node-set. Thus, if an XML element is identified by a barename XPointer in the Reference URI, and its content consists solely of base64 encoded character data, then this transform automatically strips away the start and end tags of the identified element and any of its descendant elements as well as any descendant comments and processing instructions. The output of this transform is an octet stream.
Base64
Field Summary | |
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static java.lang.String |
implementedTransformURI
Field implementedTransformURI |
Fields inherited from class org.apache.xml.security.transforms.TransformSpi |
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_transformObject |
Constructor Summary | |
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TransformBase64Decode()
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Method Summary | |
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protected java.lang.String |
engineGetURI()
Method engineGetURI |
protected XMLSignatureInput |
enginePerformTransform(XMLSignatureInput input,
java.io.OutputStream os,
Transform _transformObject)
The mega method which MUST be implemented by the Transformation Algorithm. |
protected XMLSignatureInput |
enginePerformTransform(XMLSignatureInput input,
Transform _transformObject)
Method enginePerformTransform |
Methods inherited from class org.apache.xml.security.transforms.TransformSpi |
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enginePerformTransform, setTransform |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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public static final java.lang.String implementedTransformURI
Constructor Detail |
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public TransformBase64Decode()
Method Detail |
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protected java.lang.String engineGetURI()
engineGetURI
in class TransformSpi
Transformation algorithm
protected XMLSignatureInput enginePerformTransform(XMLSignatureInput input, Transform _transformObject) throws java.io.IOException, CanonicalizationException, TransformationException
enginePerformTransform
in class TransformSpi
input
- _transformObject
- the Transform
XMLSignatureInput
as the result of transformation
CanonicalizationException
java.io.IOException
TransformationException
protected XMLSignatureInput enginePerformTransform(XMLSignatureInput input, java.io.OutputStream os, Transform _transformObject) throws java.io.IOException, CanonicalizationException, TransformationException
TransformSpi
enginePerformTransform
in class TransformSpi
input
- XMLSignatureInput
as the input of transformationos
- where to output this transformation._transformObject
- the Transform
XMLSignatureInput
as the result of transformation
java.io.IOException
CanonicalizationException
TransformationException
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