org.apache.wss4j.dom.util

Class EncryptionUtils

java.lang.Object

org.apache.wss4j.dom.util.EncryptionUtils

public final class EncryptionUtils
extends Object

Method Summary

Modifier and Type	Method and Description
static WSDataRef	decryptEncryptedData(Document doc, String dataRefURI, Element encData, SecretKey symmetricKey, String symEncAlgo, CallbackHandler attachmentCallbackHandler) Decrypt the EncryptedData argument using a SecretKey.
static Element	findEncryptedDataElement(Document doc, WSDocInfo wsDocInfo, String dataRefURI) Look up the encrypted data.
static Element	getCipherValueFromEncryptedData(Element encData)
static byte[]	getDecodedBase64EncodedData(Element element) Method getDecodedBase64EncodedData
static String	getDigestAlgorithm(Node encBodyData)
static String	getMGFAlgorithm(Node encBodyData)
static byte[]	getPSource(Node encBodyData)
static String	getXOPURIFromCipherValue(Element cipherValue)
static String	getXPath(Node decryptedNode)

Methods inherited from class java.lang.Object

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

Method Detail

findEncryptedDataElement

public static Element findEncryptedDataElement(Document doc,
                                               WSDocInfo wsDocInfo,
                                               String dataRefURI)
                                        throws WSSecurityException

Look up the encrypted data. First try Id="someURI". If no such Id then try wsu:Id="someURI".

Parameters:

doc - The document in which to find EncryptedData

wsDocInfo - The WSDocInfo object to use

dataRefURI - The URI of EncryptedData

Returns:

The EncryptedData element

Throws:

WSSecurityException - if the EncryptedData element referenced by dataRefURI is not found

decryptEncryptedData

public static WSDataRef decryptEncryptedData(Document doc,
                                             String dataRefURI,
                                             Element encData,
                                             SecretKey symmetricKey,
                                             String symEncAlgo,
                                             CallbackHandler attachmentCallbackHandler)
                                      throws WSSecurityException

Decrypt the EncryptedData argument using a SecretKey.

Parameters:

doc - The (document) owner of EncryptedData

dataRefURI - The URI of EncryptedData

encData - The EncryptedData element

symmetricKey - The SecretKey with which to decrypt EncryptedData

symEncAlgo - The symmetric encryption algorithm to use

attachmentCallbackHandler - The CallbackHandler from which to get attachments

Throws:

WSSecurityException

getCipherValueFromEncryptedData

public static Element getCipherValueFromEncryptedData(Element encData)

getXOPURIFromCipherValue

public static String getXOPURIFromCipherValue(Element cipherValue)

getXPath

public static String getXPath(Node decryptedNode)

Parameters:

decryptedNode - the decrypted node

Returns:

a fully built xpath (eg. "/soapenv:Envelope/soapenv:Body/ns:decryptedElement") if the decryptedNode is an Element or an Attr node and is not detached from the document. null otherwise

getDigestAlgorithm

public static String getDigestAlgorithm(Node encBodyData)
                                 throws WSSecurityException

Throws:

WSSecurityException

getMGFAlgorithm

public static String getMGFAlgorithm(Node encBodyData)
                              throws WSSecurityException

Throws:

WSSecurityException

getPSource

public static byte[] getPSource(Node encBodyData)
                         throws WSSecurityException

Throws:

WSSecurityException

getDecodedBase64EncodedData

public static byte[] getDecodedBase64EncodedData(Element element)
                                          throws WSSecurityException

Method getDecodedBase64EncodedData

Parameters:

element -

Returns:

a byte array containing the decoded data

Throws:

WSSecurityException