XML Security and JCE

[Eric Tournier]

Hi :)
 
  I'm hoping this is the right list to be emailing this question to.
  I'm using a home-made XML Encryption implementation which uses
javax.crypto.* classes but unfortunately I'm not the developer of this
implementation. In order to test interoperability of it with well-known
API, I'm trying to encrypt a XML document with XML Security and decrypt
the result with my implementation, and vice-versa.
  I don't known how to do this and I feel a lilltle bit lost with all
the initialization and configuration paramters of XML Security. Could
someone teach me how to do ?
 
Here are XML Security encryption :
========
 
KeyGenerator keyGenerator = KeyGenerator.getInstance("DESede", "BC");
keyGenerator.init(secureRandom);
SecretKey sessionKey = keyGenerator.generateKey();

XMLCipher xmlCipherRSA =
XMLCipher.getProviderInstance(XMLCipher.RSA_v1dot5, "BC");
xmlCipherRSA.init(XMLCipher.WRAP_MODE, clefPublique);
EncryptedKey encryptedKey = xmlCipherRSA.encryptKey(doc, sessionKey);
 
Element rootElement = doc.getDocumentElement();
XMLCipher xmlCipher = XMLCipher.getProviderInstance(TRIPLEDES, "BC");
xmlCipher.init(XMLCipher.ENCRYPT_MODE, sessionKey);
 
EncryptedData encryptedData = xmlCipher.getEncryptedData();
KeyInfo keyInfo = encryptedData.getKeyInfo();
if (keyInfo == null)
{
  keyInfo = new KeyInfo(doc);
  encryptedData.setKeyInfo(keyInfo);
}
keyInfo.add(encryptedKey);
xmlCipher.doFinal(doc, rootElement, true);
========
 
Here are home-made encryption :
========
KeyGenerator keyGen;
keyGen = KeyGenerator.getInstance("DESede", "BC");
keyGen.init(secureRandom);
SecretKey key = keyGen.generateKey();
 
Cipher cipherRSA = Cipher.getInstance("RSA/NONE/PKCS1PADDING", "BC");
cipherRSA.init(Cipher.ENCRYPT_MODE, this.publicKey);
byte[] encryptedKey = cipherRSA.doFinal(key.getEncoded());
String sessionKey = new String(Base64.encodeBase64(encryptedKey,
false));
 
byte[] iv = { (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte)
0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00 };
 
Cipher cipher = Cipher.getInstance("DESede/CBC/ISO10126-2Padding",
"BC");
cipher.init(Cipher.ENCRYPT_MODE, key, new IvParameterSpec(iv));
 
byte[] encryptedBytes = cipher.doFinal(data.substring(begin + 1,
end).getBytes("UTF-8"));
 
byte[] ivBytes = concatanate(iv, encryptedBytes);
String cipherValue = new String(Base64.encodeBase64(ivBytes));
========
 
Thanks in advance for all 
Ticker