Examples of org.apache.xml.security.encryption.XMLCipher

Package org.apache.xml.security.encryption

Examples of org.apache.xml.security.encryption.XMLCipher

org.apache.xml.security.encryption.XMLCipher
XMLCipher encrypts and decrypts the contents of Documents, Elements and Element contents. It was designed to resemble javax.crypto.Cipher in order to facilitate understanding of its functioning. @author Axl Mattheus (Sun Microsystems) @author Christian Geuer-Pollmann

        boolean includeWrappingKeyInfo,
        Document document,
        List<String> localNames,
        boolean content
    ) throws Exception {
        XMLCipher cipher = XMLCipher.getInstance(algorithm);
        cipher.init(XMLCipher.ENCRYPT_MODE, secretKey);
        
        if (wrappingKey != null) {
            XMLCipher newCipher = XMLCipher.getInstance(keyTransportAlgorithm);
            newCipher.init(XMLCipher.WRAP_MODE, wrappingKey);
            EncryptedKey encryptedKey = newCipher.encryptKey(document, secretKey);
            if (includeWrappingKeyInfo && wrappingKey instanceof PublicKey) {
                // Create a KeyInfo for the EncryptedKey
                KeyInfo encryptedKeyKeyInfo = encryptedKey.getKeyInfo();
                if (encryptedKeyKeyInfo == null) {
                    encryptedKeyKeyInfo = new KeyInfo(document);

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            String algorithm,
            SecretKey secretKey,
            Key wrappingKey,
            Document document
    ) throws Exception {
        XMLCipher cipher = XMLCipher.getInstance(algorithm);
        cipher.init(XMLCipher.DECRYPT_MODE, secretKey);
        if (wrappingKey != null) {
            cipher.setKEK(wrappingKey);
        }


        NodeList nodeList = document.getElementsByTagNameNS(
                XMLSecurityConstants.TAG_xenc_EncryptedData.getNamespaceURI(),
                XMLSecurityConstants.TAG_xenc_EncryptedData.getLocalPart()
        );
        Element ee = (Element) nodeList.item(0);
        return cipher.doFinal(document, ee);
    }

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        String algorithm, 
        SecretKey secretKey,
        Key wrappingKey,
        Document document
    ) throws Exception {
        XMLCipher cipher = XMLCipher.getInstance(algorithm);
        cipher.init(XMLCipher.DECRYPT_MODE, secretKey);
        if (wrappingKey != null) {
            cipher.setKEK(wrappingKey);
        }
        
        NodeList nodeList = document.getElementsByTagNameNS(
                XMLSecurityConstants.TAG_xenc_EncryptedData.getNamespaceURI(),
                XMLSecurityConstants.TAG_xenc_EncryptedData.getLocalPart()
            );
        Element ee = (Element)nodeList.item(0);
        return cipher.doFinal(document, ee);
    }

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    protected void doDOMEncryptionOutbound(File file, int tagCount) throws Exception {


        DocumentBuilder builder = XMLUtils.createDocumentBuilder(false);
        Document document = builder.parse(file);


        XMLCipher cipher = XMLCipher.getInstance("http://www.w3.org/2001/04/xmlenc#aes256-cbc");
        cipher.init(XMLCipher.ENCRYPT_MODE, encryptionSymKey);
        document = cipher.doFinal(document, document.getDocumentElement());


        XMLUtils.outputDOM(document, new BufferedOutputStream(new FileOutputStream(new File(getTmpFilePath(), "encryption-dom-" + tagCount + ".xml"))));
    }

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    protected void doDOMDecryptionInbound(File file, int tagCount) throws Exception {


        DocumentBuilder builder = XMLUtils.createDocumentBuilder(false);
        Document document = builder.parse(file);


        XMLCipher cipher = XMLCipher.getInstance("http://www.w3.org/2001/04/xmlenc#aes256-cbc");
        cipher.init(XMLCipher.DECRYPT_MODE, encryptionSymKey);
        cipher.doFinal(document, document.getDocumentElement());
    }

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                XMLSecurityConstants.TAG_xenc_EncryptedData.getLocalPart()
            );
        Element ee = (Element)nodeList.item(0);


        // Need to pre-load the Encrypted Data so we can get the key info
        XMLCipher cipher = XMLCipher.getInstance();
        cipher.init(XMLCipher.DECRYPT_MODE, null);
        EncryptedData encryptedData = cipher.loadEncryptedData(document, ee);


        XMLCipher kwCipher = XMLCipher.getInstance();
        kwCipher.init(XMLCipher.UNWRAP_MODE, keyWrappingKey);
        KeyInfo ki = encryptedData.getKeyInfo();
        EncryptedKey encryptedKey = ki.itemEncryptedKey(0);
        Key symmetricKey = 
            kwCipher.decryptKey(
                encryptedKey, encryptedData.getEncryptionMethod().getAlgorithm()
            );


        cipher.init(XMLCipher.DECRYPT_MODE, symmetricKey);
        return cipher.doFinal(document, ee);

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        Key kek = options.getKeyEncryptionKey();
        String dalg = options.getDataCipherAlgorithm();
        String kalg = options.getKeyCipherAlgorithm();
        boolean includeki = options.includeKeyInfo();
        EncryptedKey enckey = null;
        XMLCipher xmlCipher = XMLCipher.getInstance(dalg);
        xmlCipher.init(XMLCipher.ENCRYPT_MODE, dek);
        if (includeki && kek != null && dek != null) {
          XMLCipher keyCipher = XMLCipher.getInstance(kalg);
          keyCipher.init(XMLCipher.WRAP_MODE, kek);
          enckey = keyCipher.encryptKey(dom, dek);
          EncryptedData encdata = xmlCipher.getEncryptedData();
          KeyInfo keyInfo = new KeyInfo(dom);
          keyInfo.add(enckey);
          encdata.setKeyInfo(keyInfo);
        }

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      try {
        org.w3c.dom.Document dom = fomToDom(doc, options);
        Key kek = options.getKeyEncryptionKey();
        Key dek = options.getDataEncryptionKey();
        org.w3c.dom.Element element = dom.getDocumentElement();
        XMLCipher xmlCipher = XMLCipher.getInstance();
        xmlCipher.init(XMLCipher.DECRYPT_MODE, dek);
        xmlCipher.setKEK(kek);
        dom = xmlCipher.doFinal(dom, element);
        return domToFom(dom, options);
      } catch (Exception e) {
        throw new SecurityException(e);
      }
  }

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            addEncryptedKeyElement(encryptedDataElement, receiverCert, encryptedSecretKey,
                                   keyEncAlgo, digestAlgo);
        }
               
        // encrypt payloadDoc
        XMLCipher xmlCipher = 
            EncryptionUtils.initXMLCipher(symEncAlgo, XMLCipher.ENCRYPT_MODE, symmetricKey);
        
        Document result = xmlCipher.doFinal(payloadDoc, payloadDoc.getDocumentElement(), false);
        NodeList list = result.getElementsByTagNameNS(WSConstants.ENC_NS, "CipherValue");
        if (list.getLength() != 1) {
            throw new WSSecurityException("Payload CipherData is missing", null);
        }
        String cipherText = ((Element)list.item(0)).getTextContent().trim();

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    protected byte[] decryptPayload(Element root, 
                                    byte[] secretKeyBytes,
                                    String symEncAlgo) throws WSSecurityException {
        SecretKey key = WSSecurityUtil.prepareSecretKey(symEncAlgo, secretKeyBytes);
        try {
            XMLCipher xmlCipher = 
                EncryptionUtils.initXMLCipher(symEncAlgo, XMLCipher.DECRYPT_MODE, key);
            return xmlCipher.decryptToByteArray(root);
        } catch (XMLEncryptionException ex) {
            throw new WSSecurityException(
                WSSecurityException.UNSUPPORTED_ALGORITHM, null, null, ex
            );
        }

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