我有一个数字签名的XML文件和签名者的公共证书，我想要验证这个签名。响应XML的原始内容返回false，但是当我修改XML时，它返回true。我的Java代码如下：
import java.io.FileInputStream;
import java.io.IOException;
import java.security.GeneralSecurityException;
import java.security.Security;
import java.security.cert.CertificateFactory;
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.bouncycastle.jce.provider.BouncyCastleProvider;
import org.w3c.dom.Document;
import org.w3c.dom.NodeList;
public class SignatureVerifierOneFile {
public static void main(String[] args){
Security.addProvider(new BouncyCastleProvider());
//Signed xml path
String signedXmlPath = "C:/signedXML.xml";
SignatureVerifierOneFile signatureVerifier = new SignatureVerifierOneFile();
boolean signatureStatus =
signatureVerifier.verify(signedXmlPath,"C:/Cert.cer");
System.out.println("xml signature validateionis " + signatureStatus);
}
public boolean verify(String signedXml,String publicKeyFile) {
boolean verificationResult = false;
try {
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
dbf.setNamespaceAware(true);
DocumentBuilder builder = dbf.newDocumentBuilder();
Document doc = builder.parse(signedXml);
NodeList nl = doc.getElementsByTagNameNS(XMLSignature.XMLNS, "Signature");
if (nl.getLength() == 0) {
throw new IllegalArgumentException("Cannot find Signature element");
}
XMLSignatureFactory fac = XMLSignatureFactory.getInstance("DOM");
DOMValidateContext valContext = new DOMValidateContext(getCertificateFromFile(publicKeyFile).getPublicKey(), nl.item(0));
XMLSignature signature = fac.unmarshalXMLSignature(valContext);
verificationResult = signature.validate(valContext);
} catch (Exception e) {
System.out.println("Error while verifying digital siganature" + e.getMessage());
e.printStackTrace();
}
return verificationResult;
}
private X509Certificate getCertificateFromFile(String certificateFile) throws GeneralSecurityException, IOException {
FileInputStream fis = null;
try {
CertificateFactory certFactory = CertificateFactory.getInstance("X.509", "BC");
fis = new FileInputStream(certificateFile);
return (X509Certificate) certFactory.generateCertificate(fis);
} finally {
if (fis != null) {
fis.close();
}
}
}
}
我原始的带签名XML如下：
<OTPResp resCode="25f341e7-8c72-47a6-b49b-46732e7b8494" status="1" ts="2016-03-31T10:54:07.575" txn="20160331052355192"><AadhaarResp>PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTgiIHN0YW5kYWxvbmU9InllcyI/PjxBZ2VudE90cFJlc3AgcmV0PSJ5IiB0cz0iMjAxNi0wMy0zMVQxMDo1NzoxMi41MzYrMDU6MzAiIGNvZGU9IjZkZjZhZTY1YzMwNjQzMmVhZTkyNzljYTgxZGNkNmJjIiB0eG49IjI1ZjM0MWU3LThjNzItNDdhNi1iNDliLTQ2NzMyZTdiODQ5NCIvPg==</AadhaarResp><Signature xmlns="http://www.w3.org/2000/09/xmldsig#"><SignedInfo><CanonicalizationMethod Algorithm="http://www.w3.org/TR/2001/REC-xml-c14n-20010315"></CanonicalizationMethod><SignatureMethod Algorithm="http://www.w3.org/2000/09/xmldsig#rsa-sha1"></SignatureMethod><Reference URI=""><Transforms><Transform Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-signature"></Transform></Transforms><DigestMethod Algorithm="http://www.w3.org/2000/09/xmldsig#sha1"></DigestMethod><DigestValue>vOND//Y2bsHBIkxkUfjH3d/CYC4=</DigestValue></Reference></SignedInfo><SignatureValue>HJG1vPQ4CSycCJ4B065faSeBaHGad9XYDUCOj9a/Fa/bWUUFYOpi9/jxVRCngSJACEIEVwUfcCKs9uUEr3DPcDiTB1UqM9BwUCVL28Tghn/HUSg53IQZziDrI3Ta2VyB7oHEoE/8cloArAbu44gDL/selJDD4ZtAsLAecO3NFiugMG3okV7hGcX50lIDm1on7ziFTxFfL1215gmcCfwJhF/zKI0GVBV6FcCDZxLeY7qMGp0Mj4EzicQm1LIZDHIfVskh97NrWi3MKBAv9dPGOevB3XaVw7dt9nct1VEirZaprM/dl5frCDTuwtmNlZN01dnBGHDCRi/+534mvN4oUQ==</SignatureValue></Signature></OTPResp>
我修改后可以验证的XML如下：
<OTPResp resCode="25f341e7-8c72-47a6-b49b-46732e7b8494" status="1" ts="2016-03-31T10:54:07.575" txn="20160331052355192"><AadhaarResp>PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTgiIHN0YW5kYWxvbmU9InllcyI/PjxBZ2VudE90cFJlc3AgcmV0PSJ5IiB0cz0iMjAxNi0wMy0zMVQxMDo1NzoxMi41MzYrMDU6MzAiIGNvZGU9IjZkZjZhZTY1YzMwNjQzMmVhZTkyNzljYTgxZGNkNmJjIiB0eG49IjI1ZjM0MWU3LThjNzItNDdhNi1iNDliLTQ2NzMyZTdiODQ5NCIvPg==</AadhaarResp><Signature xmlns="http://www.w3.org/2000/09/xmldsig#">
<SignedInfo>
<CanonicalizationMethod Algorithm="http://www.w3.org/TR/2001/REC-xml-c14n-20010315"></CanonicalizationMethod>
<SignatureMethod Algorithm="http://www.w3.org/2000/09/xmldsig#rsa-sha1"></SignatureMethod>
<Reference URI="">
<Transforms>
<Transform Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-signature"></Transform>
</Transforms>
<DigestMethod Algorithm="http://www.w3.org/2000/09/xmldsig#sha1"></DigestMethod>
<DigestValue>vOND//Y2bsHBIkxkUfjH3d/CYC4=</DigestValue>
</Reference>
</SignedInfo>
<SignatureValue>
HJG1vPQ4CSycCJ4B065faSeBaHGad9XYDUCOj9a/Fa/bWUUFYOpi9/jxVRCngSJACEIEVwUfcCKs
9uUEr3DPcDiTB1UqM9BwUCVL28Tghn/HUSg53IQZziDrI3Ta2VyB7oHEoE/8cloArAbu44gDL/se
lJDD4ZtAsLAecO3NFiugMG3okV7hGcX50lIDm1on7ziFTxFfL1215gmcCfwJhF/zKI0GVBV6FcCD
ZxLeY7qMGp0Mj4EzicQm1LIZDHIfVskh97NrWi3MKBAv9dPGOevB3XaVw7dt9nct1VEirZaprM/d
l5frCDTuwtmNlZN01dnBGHDCRi/+534mvN4oUQ==
</SignatureValue>
</Signature></OTPResp>
我无法弄清楚我做错了什么？谢谢提前。