[XMLRPC-88] org.apache.xml.security.encryption.XMLCipher.removeContent

• Type: Bug
• Status: Closed
• Priority: Blocker
• Resolution: Invalid
• Affects Version/s: unspecified
• Component/s: Releases
• Environment: OS:Windows 2000; J2SE:1.5; JRE:1.5.0_06; Hardware: P-4 2.4 Ghz CPU, 2GB RAM.
• Assignee: Unassigned
• Reporter: Arpit Doshi
• Created: 21/Jun/06 17:47
• Updated: 23/Jun/06 12:18
• Resolved: 23/Jun/06 12:18

Description

Hello,

I am trying to encrypt a XML file using XMLCipher class. The size of the file is almost 35 MB, while encrypting the XML file it throws this error after around 3 minutes.
The program works perfectly fine for file size of less than 5 MB. This is very critical for our project and has to work as soon as possible.
Eventually we are going to port the application on AIX5.3
The piece of code I am using is:

public void encryptData() throws EncryptionException
{
final String methodName = "encryptData";

XMLCipher keyCipher,xmlCipher = null;
Document document = null;
String encryptedFileName = null;
Key symmetricKey = null;
Key keyEncryptKey = null;
boolean exceptionOccured = false;

try
{
System.out.println("now parsing document");
document=parseFile( fileToBeEncrypted );
// generate symmetric key
symmetricKey = GenerateSymmetricKey();

// Get a key to be used for encrypting the symmetric key
keyEncryptKey = GenerateKeyEncryptionKey();

// Write the key to a file
//and pass the key and the name of file in which it has to store the Key
storeKeyFile(keyEncryptKey,getKeyFileName(fileToBeEncrypted.toString()));

// initialize cipher and operation mode is to wrap a key
keyCipher =XMLCipher.getInstance(XMLCipher.TRIPLEDES_KeyWrap);
keyCipher.init(XMLCipher.WRAP_MODE, keyEncryptKey);

// encrypt symmetric key
EncryptedKey encryptedKey = keyCipher.encryptKey(document, symmetricKey);
// specify the element to encrypt, ideally it will be root element
Element rootElement = document.getDocumentElement();

Element elementToEncrypt = rootElement;

if (elementToEncrypt == null)

{ throw new EncryptionException("Element to Encrypt is null since the filename may not be correct" + "or the file to be encrypted may not be well formed" + "Please check in File" + "AMLFeederConfiguration.properties"); }

// initialize cipher for encrypting XML data using operation mode of ENCRYPT_MODE
xmlCipher = XMLCipher.getInstance(XMLCipher.TRIPLEDES);

xmlCipher.init(XMLCipher.ENCRYPT_MODE, symmetricKey);

// add key info to encrypted data element, so that within the encrypted data,
// there is also information about the key, that should be used to decrypt the data
EncryptedData encryptedDataElement = xmlCipher.getEncryptedData();
KeyInfo keyInfo = new KeyInfo(document);
keyInfo.add(encryptedKey);
encryptedDataElement.setKeyInfo(keyInfo);

Problem is caused while calling doFinal() // do the actual encryption
boolean encryptContentsOnly = true;
xmlCipher.doFinal(document, elementToEncrypt, encryptContentsOnly);

//this will return xxxxx_e.xml
encryptedFileName = getEncryptedFileNameToWrite(fileToBeEncrypted.toString());

// write the results to a file
writeEncryptedDocToFile(document, encryptedFileName);

this.encryptedFileName = encryptedFileName;

}
catch(FileNotFoundException fnfException){

}
catch (ContentHandlerAlreadyRegisteredException e) {
}
catch(XMLEncryptionException xeException){
}
catch( EncryptionException encryptionException )
{
}
catch(Exception e){
}
finally{

if(exceptionOccured)

{ moveToRejectedDir( this.fileToBeEncrypted ); moveToRejectedDir( this.keyFile ); }

document = null;
symmetricKey = null;
keyEncryptKey = null;
xmlCipher = null;

}

}

The exception I am getting is:
Exception in thread "main" java.lang.StackOverflowError
at org.apache.xerces.dom.ParentNode.internalRemoveChild(Unknown Source)
at org.apache.xerces.dom.ParentNode.removeChild(Unknown Source)
at org.apache.xml.security.encryption.XMLCipher.removeContent(Unknown So
urce)
at org.apache.xml.security.encryption.XMLCipher.removeContent(Unknown So
urce)
at org.apache.xml.security.encryption.XMLCipher.removeContent(Unknown So
urce)
at org.apache.xml.security.encryption.XMLCipher.removeContent(Unknown So
urce)
at org.apache.xml.security.encryption.XMLCipher.removeContent(Unknown So
urce)
at org.apache.xml.security.encryption.XMLCipher.removeContent(Unknown So
urce)
at org.apache.xml.security.encryption.XMLCipher.removeContent(Unknown So
urce)
at org.apache.xml.security.encryption.XMLCipher.removeContent(Unknown So
urce)
at org.apache.xml.security.encryption.XMLCipher.removeContent(Unknown So