XADES4J-XML签名验证错误-SignaturePolicyNotAvailableException

Question

我收到带有Xades EPES签名的XML发票，我必须控制它。所以我尝试用Xades4j做到这一点。我已经修复了很多错误，但我坚持错误:

errxades4j.verification.SignaturePolicyNotAvailableException: Verification failed for property 'SignaturePolicyIdentifier': signature policy document is not available
    at xades4j.verification.SignaturePolicyVerifier.verify(SignaturePolicyVerifier.java:67)
    at xades4j.verification.SignaturePolicyVerifier.verify(SignaturePolicyVerifier.java:38)
    at xades4j.verification.QualifyingPropertiesVerifierImpl.verifyProperties(QualifyingPropertiesVerifierImpl.java:58)
    at xades4j.verification.XadesVerifierImpl.verify(XadesVerifierImpl.java:202)

Java代码用于验证签名 :

FileInputStream fis = new FileInputStream("keystore.jks");
KeyStore trustAnchors = KeyStore.getInstance("jks");
trustAnchors.load(fis,"password".toCharArray());
fis.close();

CertificateValidationProvider certValidator = new PKIXCertificateValidationProvider(trustAnchors, false);
XadesVerificationProfile p = new XadesVerificationProfile(certValidator);
XadesVerifier v = p.newVerifier();

DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
dbf.setNamespaceAware(true);
DocumentBuilder db =  dbf.newDocumentBuilder();
FileInputStream is = new FileInputStream(filename);
Document doc = db.parse(is);

Element sigElem = (Element)doc.getElementsByTagNameNS(Constants.SignatureSpecNS, Constants._TAG_SIGNATURE).item(0);
XAdESVerificationResult r = null;
r = v.verify(sigElem,null);

如有必要，我可以发布我尝试在匿名后验证的XML文件的提取。

谢谢.我已经看过并尝试了所有我发现的（在网上，xades4j示例，xades4j junit类。..）但似乎没有解决我的错误。

Answer 1

您需要像这样指定自己的策略文档提供程序: p.withPolicyDocumentProvider().并且您必须实现自己的策略提供程序来实现接口 SignaturePolicyInfoProvider 和 SignaturePolicyDocumentProvider.（至少我是这样做的）

编辑您的评论:

你需要实现 SignaturePolicyInfoProvider.getSignaturePolicyDocumentStream(), ，它返回一个 InputStream.这可以是一个 FileInputStream

例子：:

public class FilebasedSignaturePolicyProvider implements  SignaturePolicyDocumentProvider {

    @Override
    public InputStream getSignaturePolicyDocumentStream(ObjectIdentifier sigPolicyId) {
        String oid = sigPolicyId.getIdentifier();

        try {
            return new FileInputStream("directory-to-my-policy-files/" + oid);
        } catch (FileNotFoundException e) {
            // handle error
        }
    }
}