java - 加密 XML 后丢失 x 509 证书信息，冗余命名空间

Question

我正在使用 Java Security 和 Javax XML Crypto 进行 X509 证书签名。使用 XMLSignature 签名后，它工作得很好

XMLSignature signature = xmlsignaturefactory.newXMLSignature(signedinfo, keyinfo);

signature.sign(domsigncontext);

我的 xml 文件已正确签名并且格式如下:

<?xml version="1.0" encoding="UTF-8"?>
<bxd:ApplicationRequest xmlns:bxd="http://bxd.fi/xmldata/">
    <bxd:CustomerId>zzz</bxd:CustomerId>
    <bxd:Command>UploadFile</bxd:Command>
    <bxd:Timestamp>2011-11-17T09:30:47Z</bxd:Timestamp>
    <bxd:Environment>TEST</bxd:Environment>
    <bxd:Encryption>true</bxd:Encryption>
    <bxd:Compression>true</bxd:Compression>
    <bxd:CompressionMethod>gzip</bxd:CompressionMethod>
    <bxd:SoftwareId>CustomerSoftwareId</bxd:SoftwareId>
    <bxd:FileType>pain.001.001.02</bxd:FileType>
    <bxd:Content>testtesttest</bxd:Content>
    <Signature xmlns="http://www.w3.org/2000/09/xmldsig#">
        <SignedInfo>
            <CanonicalizationMethod Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/>
            <SignatureMethod Algorithm="http://www.w3.org/2000/09/xmldsig#rsa-sha1"/>
            <Reference URI="">
                <Transforms>
                    <Transform Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-signature"/>
                    <Transform Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/>
                </Transforms>
                <DigestMethod Algorithm="http://www.w3.org/2000/09/xmldsig#sha1"/>
                <DigestValue>AdsaH3fjwrbbcYxX3Nv5few+eFyEuTww=</DigestValue>
            </Reference>
        </SignedInfo>
        <SignatureValue>valuehere</SignatureValue>
        <KeyInfo>
            <X509Data>
                <X509Certificate>certificatehere</X509Certificate>
                <X509IssuerSerial>
                    <X509IssuerName>CN=test,OU=Unknown,O=Unknown,L=Unknown,ST=Unknown,C=Unknown</X509IssuerName>
                    <X509SerialNumber>2312434323</X509SerialNumber>
                </X509IssuerSerial>
            </X509Data>
        </KeyInfo>
    </Signature>
</bxd:ApplicationRequest>

之后，我使用生成的 key 通过 3DES 对其进行加密，之后，我使用 RSA 1.5 和证书中的公钥对该 key 进行加密。我为此使用 Apache Santuario。我的问题是加密后我丢失了证书信息。此外，每个标签都有

xmlns:xenc="http://www.w3.org/2001/04/xmlenc#"

除了这里的一个地方之外，添加了我不想要的命名空间 ->

<xenc:EncryptedData xmlns:xenc="http://www.w3.org/2001/04/xmlenc#"
Type="http://www.w3.org/2001/04/xmlenc#Element">

当前输出:

<?xml version="1.0" encoding="UTF-8"?>
<bxd:ApplicationRequest xmlns:bxd="http://bxd.fi/xmldata/">
    <xenc:EncryptedData Type="http://www.w3.org/2001/04/xmlenc#Content" xmlns:xenc="http://www.w3.org/2001/04/xmlenc#">
        <xenc:EncryptionMethod Algorithm="http://www.w3.org/2001/04/xmlenc#tripledes-cbc" xmlns:xenc="http://www.w3.org/2001/04/xmlenc#"/>
        <ds:KeyInfo xmlns:ds="http://www.w3.org/2000/09/xmldsig#">
            <xenc:EncryptedKey xmlns:xenc="http://www.w3.org/2001/04/xmlenc#">
                <xenc:EncryptionMethod Algorithm="http://www.w3.org/2001/04/xmlenc#rsa-1_5" xmlns:xenc="http://www.w3.org/2001/04/xmlenc#"/>
                <xenc:CipherData xmlns:xenc="http://www.w3.org/2001/04/xmlenc#">
                    <xenc:CipherValue xmlns:xenc="http://www.w3.org/2001/04/xmlenc#">ciphervalueone</xenc:CipherValue>
                </xenc:CipherData>
            </xenc:EncryptedKey>
        </ds:KeyInfo>
        <xenc:CipherData xmlns:xenc="http://www.w3.org/2001/04/xmlenc#">
            <xenc:CipherValue xmlns:xenc="http://www.w3.org/2001/04/xmlenc#">cipherval</xenc:CipherValue>
        </xenc:CipherData>
    </xenc:EncryptedData>
</bxd:ApplicationRequest>

处理加密的代码:

public class Encryption
{
    static
    {
        org.apache.xml.security.Init.init();
    }

public static EncryptedKey encryptKey(Document document, SecretKey keyToBeEncrypted, PublicKey keyUsedToEncryptSecretKey) throws org.apache.xml.security.encryption.XMLEncryptionException {
    XMLCipher keyCipher = null;
    String pubKeyAlg = keyUsedToEncryptSecretKey.getAlgorithm();

    try {
        String keyWrapAlgo = XMLCipher.RSA_v1dot5;
        keyCipher = XMLCipher.getInstance(keyWrapAlgo);

        keyCipher.init(XMLCipher.WRAP_MODE, keyUsedToEncryptSecretKey);
        //return keyCipher.encryptKey(document, keyToBeEncrypted);
    } catch (Exception e) {
        e.printStackTrace();
    }
    return keyCipher.encryptKey(document, keyToBeEncrypted);
}

private static SecretKey GenerateSymmetricKey()
        throws Exception
{
    String jceAlgorithmName = "DESede";
    KeyGenerator keyGenerator =
            KeyGenerator.getInstance(jceAlgorithmName);
    return keyGenerator.generateKey();
}

public static Document EncryptDocument(Document document, String elementToEncode, KeyPair pair)
        throws Exception
{
    // generate symmetric key
    SecretKey symmetricKey = GenerateSymmetricKey();

    EncryptedKey encKey = encryptKey(document,symmetricKey, pair.getPublic());

    Element rootElement = document.getDocumentElement();
    Element elementToEncrypt = rootElement;

    XMLCipher xmlCipher =
            XMLCipher.getInstance(XMLCipher.TRIPLEDES);
    xmlCipher.init(XMLCipher.ENCRYPT_MODE, symmetricKey);

    // add key info to encrypted data element
    EncryptedData encryptedDataElement =
            xmlCipher.getEncryptedData();
    KeyInfo keyInfo = new KeyInfo(document);
    keyInfo.add(encKey);
    encryptedDataElement.setKeyInfo(keyInfo);

    // do the actual encryption
    //boolean encryptContentsOnly = false;
    xmlCipher.doFinal(document,
            elementToEncrypt, true);

    // write the results to a file
    return document;
}
}

预期结果:

<xenc:EncryptedData Type="http://www.w3.org/2001/04/xmlenc#Element" xmlns:xenc="http://www.w3.org/2001/04/xmlenc#">
    <xenc:EncryptionMethod Algorithm="http://www.w3.org/2001/04/xmlenc#tripledes-cbc"/>
    <dsig:KeyInfo xmlns:dsig="http://www.w3.org/2000/09/xmldsig#">
        <xenc:EncryptedKey>
            <xenc:EncryptionMethod Algorithm="http://www.w3.org/2001/04/xmlenc#rsa-1_5"/>
            <dsig:KeyInfo>
                <dsig:X509Data>
                    <dsig:X509Certificate>DigitalSignatureOfCertificateHere</dsig:X509Certificate>
                </dsig:X509Data>
            </dsig:KeyInfo>
            <xenc:CipherData>
                <xenc:CipherValue>CipherValueofEncryptedKeyHere</xenc:CipherValue>
            </xenc:CipherData>
        </xenc:EncryptedKey>
    </dsig:KeyInfo>
    <xenc:CipherData>
        <xenc:CipherValue>CipherValueOfProvidedXMLHere</xenc:CipherValue>
    </xenc:CipherData>
</xenc:EncryptedData>

Answer 1

我成功地正确编码并加密了 xml 文件。回答以供将来引用。

问题出在加密期间向 KeyInfo 添加信息时。在签署 xml 文件期间，已正确添加有关证书的信息。但在加密过程中，信息也被加密。解决方案是再次将证书数据添加到 KeyInfo 中。

EncryptedData encryptedDataElement =
        xmlCipher.getEncryptedData();
KeyInfo keyInfo = new KeyInfo(document);
X509Data x509data = new org.apache.xml.security.keys.content.X509Data(document);
x509data.addCertificate(cert);
keyInfo.add(x509data);
keyInfo.add(encKey);

encryptedDataElement.setKeyInfo(keyInfo);

// do the actual encryption
xmlCipher.doFinal(document,
        rootElement, true);