XML签名验证

Question

我有一个问题,我无法弄清楚如何解决.我的应用程序收到(据称)签名的XML,我必须验证它是否正确.这是XML中接收内容的签名部分

<Signature xmlns="http://www.w3.org/2000/09/xmldsig#">
        <SignedInfo>
            <CanonicalizationMethod Algorithm="http://www.w3.org/TR/2001/REC-xml-c14n-20010315" />
            <SignatureMethod Algorithm="http://www.w3.org/2000/09/xmldsig#rsa-sha1" />
            <Reference URI="35121103220612000188550010000000131000009300">
                <Transforms>
                    <Transform Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-signature" />
                    <Transform Algorithm="http://www.w3.org/TR/2001/REC-xml-c14n-20010315" />
                </Transforms>
                <DigestMethod Algorithm="http://www.w3.org/2000/09/xmldsig#sha1" />
                <DigestValue>uLZ/66r6OoNLpj5v4cIsrv5zmyc=</DigestValue>
            </Reference>
        </SignedInfo>
        <SignatureValue>encoded</SignatureValue>
        <KeyInfo>
            <X509Data>
                <X509Certificate>encoded</X509Certificate>
            </X509Data>
        </KeyInfo>
    </Signature>

我在互联网上发现的所有验证都需要公钥.但我没有.我只有DigestValue.您知道是否可以仅使用DiggestValue进行验证吗？

这是我到目前为止所拥有的.问题是从哪里获取X509KeySelector的密钥

DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
    dbf.setNamespaceAware(true);
    DocumentBuilder builder = dbf.newDocumentBuilder();
    Document doc = builder.parse("/home/test.xml");
    Node nl = doc.getElementsByTagNameNS(XMLSignature.XMLNS, "Signature").item(0);
    DOMValidateContext valContext = new DOMValidateContext(new X509KeySelector(publicKey), nl);
    XMLSignatureFactory factory = XMLSignatureFactory.getInstance("DOM");
    XMLSignature signature = factory.unmarshalXMLSignature(valContext);
    System.out.println(signature.validate(valContext));

提前致谢.

Answer 1

您可以从嵌入式X509证书中获取X509密钥.

更新:

谷歌搜索"xml签名x509certificate"出现在这个页面,这似乎给你所需的所有答案.