使用 X509 证书验证 SOAP 请求

Question

我有一个 SOAP 服务器。在服务器接收的 SOAP 请求具有 ws 安全标头。以下是请求 XML 的主要节点。

1. BinarySecurityToken（X509PKIPathv1 证书）
2. 摘要法
3. 摘要值
4. 签名值

5. SecurityTokenReference

6. 数据（由 SOAP 正文中的客户端）

我必须使用客户端（请求的发送者）提供的证书（.cer 文件）验证请求。

验证请求的步骤是什么？请解释一下这个概念。没有库可用于执行此操作。经过长时间的研究，我能够将BinarySecurityToken 与base64_encode($certFile) 匹配，$certFile 是请求者的证书。现在我正在研究如何将DigestValue 与什么匹配。

Answer 1

WS-Security 标头可以通过以下方式进行验证。我为此编写了一个实用程序。看看它。

import java.io.FileInputStream;
import java.io.InputStream;
import java.io.StringReader;
import java.security.KeyStore;
import java.security.Provider;
import java.security.PublicKey;
import java.security.cert.X509Certificate;

import javax.xml.crypto.dsig.XMLSignature;
import javax.xml.crypto.dsig.XMLSignatureFactory;
import javax.xml.crypto.dsig.dom.DOMValidateContext;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;

import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.xml.sax.InputSource;


public class WSUtil {
    public static void main(String[] args) throws Exception {

        String req = "SOAPMESSAGE";
        Document p = createXMLDocument(req);
        InputStream inStream = new FileInputStream("certificate.p12"); //Provide your certificate file

        KeyStore ks = KeyStore.getInstance("PKCS12");
        ks.load(inStream, "pass".toCharArray()); //Certificate password - pass

        String alias = ks.aliases().nextElement();
        X509Certificate certificate = (X509Certificate) ks.getCertificate(alias);

        validateSignature(p.getElementsByTagName("ds:Signature").item(0),p.getElementsByTagName("soapenv:Body").item(0),certificate.getPublicKey());//True if the message is valid
    }

    public static Document createXMLDocument(String xmlString) throws Exception {
        DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
        factory.setNamespaceAware(true);
        DocumentBuilder builder;
        Document document = null;
        try {
            builder = factory.newDocumentBuilder();
            document = builder.parse(new InputSource(
                    new StringReader(xmlString)));
        } catch (Exception e) {
            throw e;
        }
        return document;
    }

    private static boolean validateSignature(Node signatureNode, Node bodyTag, PublicKey publicKey) {
        boolean signatureIsValid = false;
        try {
            // Create a DOM XMLSignatureFactory that will be used to unmarshal the
            // document containing the XMLSignature
            String providerName = System.getProperty
                    ("jsr105Provider", "org.jcp.xml.dsig.internal.dom.XMLDSigRI");
            XMLSignatureFactory fac = XMLSignatureFactory.getInstance("DOM",
                    (Provider) Class.forName(providerName).newInstance());

            // Create a DOMValidateContext and specify a KeyValue KeySelector
            // and document context
            DOMValidateContext valContext = new DOMValidateContext(new X509KeySelector(publicKey), signatureNode);
            valContext.setIdAttributeNS((Element) bodyTag, "http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd", "Id");

            // Unmarshal the XMLSignature.
            XMLSignature signature = fac.unmarshalXMLSignature(valContext);
            // Validate the XMLSignature.
            signatureIsValid = signature.validate(valContext); 

        } catch (Exception ex) {
            ex.printStackTrace();
        }

        return signatureIsValid;
    }
}

注意 您必须按原样提供 SOAP 消息。您不应该在某处使用任何 XML 格式或任何空白空间。添加了安全性的 SOAP 消息非常敏感。即使末尾有空格也会使 SOAP 消息无效。

Answer 2

X509KeySelector 构造函数类型不正确