XML数字签名Java

Question

我需要在JAVA中对我的XML消息进行数字签名： 生成的XML签名应具有以下格式：

<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/2001/04/xmldsig-more#rsa-sha256" />
<Reference URI="">
<Transforms>
<Transform Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-signature"/>
</Transforms>
<DigestMethod Algorithm="http://www.w3.org/2001/04/xmlenc#sha256" />
<DigestValue>DsP5NLca+plhp9tZvGwykfb2whQYt3CQ5sbsVd9Q9aE=</DigestValue>
</Reference>
</SignedInfo>
<SignatureValue>
LrfE0po3YPvVxB/m77iBWWiR07Ghiuhuj7tO2C2LKqZK2cLrAiidt+3tjbJ3m16quCFxfh7bmjRtJsGi7a3HKtK
qY4auqrjNB62AtYrxvm+7Qd/cRacom4e3M9uF9JD1zTfoGun9w4WDfDrDaoZ+ZwUgNtf6sTYO5Ctcj5sYcD0=
</SignatureValue>
<KeyInfo>
<KeyName>7D665C81ABBE1A7D0E525BFC171F04D276F07BF2</KeyName>
</KeyInfo>
</Signature>

有人能提供一些代码方面的帮助吗？

编辑：

我写了这段代码：

private static Document sign(Document doc) throws InstantiationException, IllegalAccessException, ClassNotFoundException,
            NoSuchAlgorithmException, InvalidAlgorithmParameterException, KeyException, MarshalException, XMLSignatureException,
            FileNotFoundException, TransformerException {

        String providerName = System.getProperty("jsr105Provider", "org.jcp.xml.dsig.internal.dom.XMLDSigRI");

        XMLSignatureFactory fac = XMLSignatureFactory.getInstance("DOM", (Provider) Class.forName(providerName).newInstance());

        Reference ref = fac.newReference("", fac.newDigestMethod(DigestMethod.SHA256, null));

        // Create the SignedInfo
        SignedInfo si = fac.newSignedInfo(
                fac.newCanonicalizationMethod(CanonicalizationMethod.EXCLUSIVE, (C14NMethodParameterSpec) null),
                fac.newSignatureMethod(SignatureMethod.RSA_SHA1, null), Collections.singletonList(ref));

        KeyPairGenerator kpg = KeyPairGenerator.getInstance("RSA");
        kpg.initialize(512);
        KeyPair kp = kpg.generateKeyPair();

        KeyInfoFactory kif = fac.getKeyInfoFactory();
        KeyValue kv = kif.newKeyValue(kp.getPublic());

        KeyInfo ki = kif.newKeyInfo(Collections.singletonList(kv));

        DOMSignContext dsc = new DOMSignContext(kp.getPrivate(), doc.getDocumentElement());

        XMLSignature signature = fac.newXMLSignature(si, ki);
        signature.sign(dsc);

        TransformerFactory tf = TransformerFactory.newInstance();
        Transformer trans = tf.newTransformer();
        trans.transform(new DOMSource(doc), new StreamResult(new FileOutputStream("mySignedFile")));

        return doc;
    }

但问题是我收到了以下信息：

<SignatureMethod Algorithm="http://www.w3.org/2000/09/xmldsig#rsa-sha1"/>

而不是：

<SignatureMethod Algorithm="http://www.w3.org/2001/04/xmldsig-more#rsa-sha256" />

- kozla13

Answer 1

以下是解决方案：

我在这个链接上找到了解决方案：http://mail-archives.apache.org/mod_mbox/santuario-dev/200907.mbox/[e-mail]%3E，问题出在RSA-SHA256算法上。

下面是相应的代码：

private static Document sign(Document doc) throws InstantiationException, IllegalAccessException, ClassNotFoundException,
            NoSuchAlgorithmException, InvalidAlgorithmParameterException, KeyException, MarshalException, XMLSignatureException,
            FileNotFoundException, TransformerException {

        String providerName = System.getProperty("jsr105Provider", "org.jcp.xml.dsig.internal.dom.XMLDSigRI");

        XMLSignatureFactory fac = XMLSignatureFactory.getInstance("DOM", (Provider) Class.forName(providerName).newInstance());

        DigestMethod digestMethod = fac.newDigestMethod(DigestMethod.SHA256, null);
        Transform transform = fac.newTransform(ENVELOPED, (TransformParameterSpec) null);
        Reference reference = fac.newReference("", digestMethod, singletonList(transform), null, null);
        SignatureMethod signatureMethod = fac.newSignatureMethod("http://www.w3.org/2001/04/xmldsig-more#rsa-sha256", null);
        CanonicalizationMethod canonicalizationMethod = fac.newCanonicalizationMethod(EXCLUSIVE, (C14NMethodParameterSpec) null);

        // Create the SignedInfo
        SignedInfo si = fac.newSignedInfo(canonicalizationMethod, signatureMethod, singletonList(reference));


        KeyPairGenerator kpg = KeyPairGenerator.getInstance("RSA");
        kpg.initialize(2048);

        KeyPair kp = kpg.generateKeyPair();

        KeyInfoFactory kif = fac.getKeyInfoFactory();
        KeyValue kv = kif.newKeyValue(kp.getPublic());

        // Create a KeyInfo and add the KeyValue to it
        KeyInfo ki = kif.newKeyInfo(Collections.singletonList(kv));
        DOMSignContext dsc = new DOMSignContext(kp.getPrivate(), doc.getDocumentElement());

        XMLSignature signature = fac.newXMLSignature(si, ki);
        signature.sign(dsc);

        TransformerFactory tf = TransformerFactory.newInstance();
        Transformer trans = tf.newTransformer();

        // output the resulting document
        OutputStream os;

        os = new FileOutputStream("xmlOut.xml");

        trans.transform(new DOMSource(doc), new StreamResult(os));
        return doc;

    }

- kozla13

Answer 2

您得到了<SignatureMethod Algorithm="http://www.w3.org/2000/09/xmldsig#rsa-sha1"/>，因为这是您要求的：fac.newSignatureMethod(SignatureMethod.RSA_SHA1, null)。 正如您发现的并且https://blogs.oracle.com/mullan/entry/using_stronger_xml_signature_algorithms所述，fac.newSignatureMethod("http://www.w3.org/2001/04/xmldsig-more#rsa-sha256", (SignatureMethodParameterSpec) null)将为您提供<SignatureMethod Algorithm="http://www.w3.org/2001/04/xmldsig-more#rsa-sha256" />。

- Torsten Kirschner

Answer 3

这些是标准的XML签名。请参阅W3有关“XML签名语法和处理”的文档，了解如何完成此操作的规范。在谷歌上进行快速搜索会导致Oracle编写的有关Java中XML签名集成的howto：XML数字签名API。如果您有任何进一步的问题，请向我们展示您已经尝试过的内容。

- theomega