import com.sun.org.apache.xml.internal.security.keys.content.x509.XMLX509Digest; //导入依赖的package包/类
/**
 * Method itemDigest
 *
 * @param i
 * @return the X509Digest, null if not present
 * @throws XMLSecurityException
 */
public XMLX509Digest itemDigest(int i) throws XMLSecurityException {

    Element e =
        XMLUtils.selectDs11Node(
            this.constructionElement.getFirstChild(), Constants._TAG_X509DIGEST, i);

    if (e != null) {
        return new XMLX509Digest(e, this.baseURI);
    }
    return null;
}
 

import com.sun.org.apache.xml.internal.security.keys.content.x509.XMLX509Digest; //导入依赖的package包/类
/**
 * Resolves from the storage resolver the actual certificate represented by the digest.
 *
 * @param element
 * @param baseURI
 * @param storage
 * @return
 * @throws XMLSecurityException
 */
private X509Certificate resolveCertificate(Element element, String baseURI, StorageResolver storage)
    throws XMLSecurityException {

    XMLX509Digest x509Digests[] = null;

    Element x509childNodes[] = XMLUtils.selectDs11Nodes(element.getFirstChild(), Constants._TAG_X509DIGEST);

    if (x509childNodes == null || x509childNodes.length <= 0) {
        return null;
    }

    try {
        checkStorage(storage);

        x509Digests = new XMLX509Digest[x509childNodes.length];

        for (int i = 0; i < x509childNodes.length; i++) {
            x509Digests[i] = new XMLX509Digest(x509childNodes[i], baseURI);
        }

        Iterator<Certificate> storageIterator = storage.getIterator();
        while (storageIterator.hasNext()) {
            X509Certificate cert = (X509Certificate) storageIterator.next();

            for (int i = 0; i < x509Digests.length; i++) {
                XMLX509Digest keyInfoDigest = x509Digests[i];
                byte[] certDigestBytes = XMLX509Digest.getDigestBytesFromCert(cert, keyInfoDigest.getAlgorithm());

                if (Arrays.equals(keyInfoDigest.getDigestBytes(), certDigestBytes)) {
                    if (log.isLoggable(java.util.logging.Level.FINE)) {
                        log.log(java.util.logging.Level.FINE, "Found certificate with: " + cert.getSubjectX500Principal().getName());
                    }
                    return cert;
                }

            }
        }

    } catch (XMLSecurityException ex) {
        throw new KeyResolverException("empty", ex);
    }

    return null;
}
 

import com.sun.org.apache.xml.internal.security.keys.content.x509.XMLX509Digest; //导入依赖的package包/类
/**
 * Method addDigest
 *
 * @param x509certificate
 * @param algorithmURI
 * @throws XMLSecurityException
 */
public void addDigest(X509Certificate x509certificate, String algorithmURI)
    throws XMLSecurityException {
    this.add(new XMLX509Digest(this.doc, x509certificate, algorithmURI));
}
 

import com.sun.org.apache.xml.internal.security.keys.content.x509.XMLX509Digest; //导入依赖的package包/类
/**
 * Method add
 *
 * @param XMLX509Digest
 */
public void add(XMLX509Digest xmlX509Digest) {
    this.constructionElement.appendChild(xmlX509Digest.getElement());
    XMLUtils.addReturnToElement(this.constructionElement);
}