Ok, one more update. The last error was entirely my fault. I was searching for an element that didn't exist.
But I'm still getting errors. Current configuration: BC provider at number 2. searching for text1 element. Still using j2se 1.4.2 This is the latest output and error: Data: DES Key encryption key stored in file:/C:/SampleCode/XMLencrypt/testXMLenc/kek [EMAIL PROTECTED] Key: [EMAIL PROTECTED] algorithmURI http://www.w3.org/2001/04/xmlenc#tripledes-cbc java.lang.IllegalArgumentException: Key length not 128/192/256 bits. at org.bouncycastle.crypto.engines.AESFastEngine.generateWorkingKey(AESFastEngine.java:606) at org.bouncycastle.crypto.engines.AESFastEngine.init(AESFastEngine.java:679) at org.bouncycastle.crypto.modes.CBCBlockCipher.init(CBCBlockCipher.java:79) at org.bouncycastle.crypto.paddings.PaddedBufferedBlockCipher.init(PaddedBufferedBlockCipher.java:74) at org.bouncycastle.jce.provider.JCEBlockCipher.engineInit(JCEBlockCipher.java:420) at org.bouncycastle.jce.provider.JCEBlockCipher.engineInit(JCEBlockCipher.java:473) at javax.crypto.Cipher.init(Cipher.java:370) at org.apache.xml.security.encryption.XMLCipher.encryptData(Unknown Source) at org.apache.xml.security.encryption.XMLCipher.encryptElementContent(Unknown Source) at org.apache.xml.security.encryption.XMLCipher.doFinal(Unknown Source) at Encrypter.main(Encrypter.java:212) Exception in thread "main"
