EncryptedKey encryptedKey = cipher.encryptKey(d, key);
// encrypt
cipher = XMLCipher.getInstance(XMLCipher.AES_192);
cipher.init(XMLCipher.ENCRYPT_MODE, key);
EncryptedData builder = cipher.getEncryptedData();
KeyInfo builderKeyInfo = builder.getKeyInfo();
if (builderKeyInfo == null) {
builderKeyInfo = new KeyInfo(d);
builder.setKeyInfo(builderKeyInfo);
}
builderKeyInfo.add(encryptedKey);
ed = cipher.doFinal(d, e);
//decrypt
key = null;
ee = (Element) ed.getElementsByTagName("xenc:EncryptedData").item(0);
cipher = XMLCipher.getInstance();
cipher.init(XMLCipher.DECRYPT_MODE, null);
EncryptedData encryptedData = cipher.loadEncryptedData(ed, ee);
if(encryptedData == null) {
System.out.println("ed is null");
}
else if (encryptedData.getKeyInfo() == null) {
System.out.println("ki is null");
}
EncryptedKey ek = encryptedData.getKeyInfo().itemEncryptedKey(0);
if (ek != null) {
XMLCipher keyCipher = XMLCipher.getInstance();
keyCipher.init(XMLCipher.UNWRAP_MODE, kek);
key = keyCipher.decryptKey(ek, encryptedData.getEncryptionMethod().getAlgorithm());
}
// Create a new cipher just to be paranoid
XMLCipher cipher3 = XMLCipher.getInstance();
cipher3.init(XMLCipher.DECRYPT_MODE, key);