com.sun.org.apache.xml.internal.security.keys.storage.StorageResolver Java Examples

The following examples show how to use com.sun.org.apache.xml.internal.security.keys.storage.StorageResolver. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example #1
Source File: KeyInfoReferenceResolver.java    From dragonwell8_jdk with GNU General Public License v2.0 6 votes vote down vote up 
/** {@inheritDoc}. */
public X509Certificate engineLookupResolveX509Certificate(Element element, String baseURI, StorageResolver storage)
    throws KeyResolverException {

    if (log.isLoggable(java.util.logging.Level.FINE)) {
        log.log(java.util.logging.Level.FINE, "Can I resolve " + element.getTagName());
    }

    if (!engineCanResolve(element, baseURI, storage)) {
        return null;
    }

    try {
        KeyInfo referent = resolveReferentKeyInfo(element, baseURI, storage);
        if (referent != null) {
            return referent.getX509Certificate();
        }
    } catch (XMLSecurityException e) {
        if (log.isLoggable(java.util.logging.Level.FINE)) {
            log.log(java.util.logging.Level.FINE, "XMLSecurityException", e);
        }
    }

    return null;
}
Example #2
Source File: KeyInfo.java    From jdk8u-dev-jdk with GNU General Public License v2.0 6 votes vote down vote up 
private X509Certificate applyCurrentResolver(
    String uri, KeyResolverSpi keyResolver
) throws KeyResolverException {
    Node currentChild = this.constructionElement.getFirstChild();
    while (currentChild != null)      {
        if (currentChild.getNodeType() == Node.ELEMENT_NODE) {
            for (StorageResolver storage : storageResolvers) {
                X509Certificate cert =
                    keyResolver.engineLookupResolveX509Certificate(
                        (Element) currentChild, uri, storage
                    );

                if (cert != null) {
                    return cert;
                }
            }
        }
        currentChild = currentChild.getNextSibling();
    }
    return null;
}
Example #3
Source File: KeyInfoReferenceResolver.java    From openjdk-jdk8u with GNU General Public License v2.0 6 votes vote down vote up 
/** {@inheritDoc}. */
public SecretKey engineLookupAndResolveSecretKey(Element element, String baseURI, StorageResolver storage)
    throws KeyResolverException {

    if (log.isLoggable(java.util.logging.Level.FINE)) {
        log.log(java.util.logging.Level.FINE, "Can I resolve " + element.getTagName());
    }

    if (!engineCanResolve(element, baseURI, storage)) {
        return null;
    }

    try {
        KeyInfo referent = resolveReferentKeyInfo(element, baseURI, storage);
        if (referent != null) {
            return referent.getSecretKey();
        }
    } catch (XMLSecurityException e) {
        if (log.isLoggable(java.util.logging.Level.FINE)) {
            log.log(java.util.logging.Level.FINE, "XMLSecurityException", e);
        }
    }

    return null;
}
Example #4
Source File: KeyInfo.java    From jdk1.8-source-analysis with Apache License 2.0 6 votes vote down vote up 
private X509Certificate applyCurrentResolver(
    String uri, KeyResolverSpi keyResolver
) throws KeyResolverException {
    Node currentChild = this.constructionElement.getFirstChild();
    while (currentChild != null)      {
        if (currentChild.getNodeType() == Node.ELEMENT_NODE) {
            for (StorageResolver storage : storageResolvers) {
                X509Certificate cert =
                    keyResolver.engineLookupResolveX509Certificate(
                        (Element) currentChild, uri, storage
                    );

                if (cert != null) {
                    return cert;
                }
            }
        }
        currentChild = currentChild.getNextSibling();
    }
    return null;
}
Example #5
Source File: SingleKeyResolver.java    From jdk8u-jdk with GNU General Public License v2.0 6 votes vote down vote up 
/**
 * Method engineResolvePrivateKey
 * @inheritDoc
 * @param element
 * @param baseURI
 * @param storage
 * @return resolved PrivateKey key or null if no {@link PrivateKey} could be obtained
 * @throws KeyResolverException
 */
public PrivateKey engineLookupAndResolvePrivateKey(
    Element element, String baseURI, StorageResolver storage
) throws KeyResolverException {
    if (log.isLoggable(java.util.logging.Level.FINE)) {
        log.log(java.util.logging.Level.FINE, "Can I resolve " + element.getTagName() + "?");
    }

    if (privateKey != null
        && XMLUtils.elementIsInSignatureSpace(element, Constants._TAG_KEYNAME)) {
        String name = element.getFirstChild().getNodeValue();
        if (keyName.equals(name)) {
            return privateKey;
        }
    }

    log.log(java.util.logging.Level.FINE, "I can't");
    return null;
}
Example #6
Source File: SingleKeyResolver.java    From TencentKona-8 with GNU General Public License v2.0 6 votes vote down vote up 
/**
 * Method engineLookupAndResolvePublicKey
 *
 * @param element
 * @param baseURI
 * @param storage
 * @return null if no {@link PublicKey} could be obtained
 * @throws KeyResolverException
 */
public PublicKey engineLookupAndResolvePublicKey(
    Element element, String baseURI, StorageResolver storage
) throws KeyResolverException {
    if (log.isLoggable(java.util.logging.Level.FINE)) {
        log.log(java.util.logging.Level.FINE, "Can I resolve " + element.getTagName() + "?");
    }

    if (publicKey != null
        && XMLUtils.elementIsInSignatureSpace(element, Constants._TAG_KEYNAME)) {
        String name = element.getFirstChild().getNodeValue();
        if (keyName.equals(name)) {
            return publicKey;
        }
    }

    log.log(java.util.logging.Level.FINE, "I can't");
    return null;
}
Example #7
Source File: KeyInfoReferenceResolver.java    From hottub with GNU General Public License v2.0 6 votes vote down vote up 
/** {@inheritDoc}. */
public X509Certificate engineLookupResolveX509Certificate(Element element, String baseURI, StorageResolver storage)
    throws KeyResolverException {

    if (log.isLoggable(java.util.logging.Level.FINE)) {
        log.log(java.util.logging.Level.FINE, "Can I resolve " + element.getTagName());
    }

    if (!engineCanResolve(element, baseURI, storage)) {
        return null;
    }

    try {
        KeyInfo referent = resolveReferentKeyInfo(element, baseURI, storage);
        if (referent != null) {
            return referent.getX509Certificate();
        }
    } catch (XMLSecurityException e) {
        if (log.isLoggable(java.util.logging.Level.FINE)) {
            log.log(java.util.logging.Level.FINE, "XMLSecurityException", e);
        }
    }

    return null;
}
Example #8
Source File: KeyInfoReferenceResolver.java    From jdk1.8-source-analysis with Apache License 2.0 6 votes vote down vote up 
/** {@inheritDoc}. */
public X509Certificate engineLookupResolveX509Certificate(Element element, String baseURI, StorageResolver storage)
    throws KeyResolverException {

    if (log.isLoggable(java.util.logging.Level.FINE)) {
        log.log(java.util.logging.Level.FINE, "Can I resolve " + element.getTagName());
    }

    if (!engineCanResolve(element, baseURI, storage)) {
        return null;
    }

    try {
        KeyInfo referent = resolveReferentKeyInfo(element, baseURI, storage);
        if (referent != null) {
            return referent.getX509Certificate();
        }
    } catch (XMLSecurityException e) {
        if (log.isLoggable(java.util.logging.Level.FINE)) {
            log.log(java.util.logging.Level.FINE, "XMLSecurityException", e);
        }
    }

    return null;
}
Example #9
Source File: SingleKeyResolver.java    From openjdk-jdk9 with GNU General Public License v2.0 6 votes vote down vote up 
/**
 * Method engineLookupAndResolvePublicKey
 *
 * @param element
 * @param baseURI
 * @param storage
 * @return null if no {@link PublicKey} could be obtained
 * @throws KeyResolverException
 */
public PublicKey engineLookupAndResolvePublicKey(
    Element element, String baseURI, StorageResolver storage
) throws KeyResolverException {
    if (log.isLoggable(java.util.logging.Level.FINE)) {
        log.log(java.util.logging.Level.FINE, "Can I resolve " + element.getTagName() + "?");
    }

    if (publicKey != null
        && XMLUtils.elementIsInSignatureSpace(element, Constants._TAG_KEYNAME)) {
        String name = element.getFirstChild().getNodeValue();
        if (keyName.equals(name)) {
            return publicKey;
        }
    }

    log.log(java.util.logging.Level.FINE, "I can't");
    return null;
}
Example #10
Source File: KeyInfo.java    From jdk8u_jdk with GNU General Public License v2.0 6 votes vote down vote up 
/**
 * Searches the library wide KeyResolvers for public keys
 *
 * @return The public key contained in this Node.
 * @throws KeyResolverException
 */
PublicKey getPublicKeyFromStaticResolvers() throws KeyResolverException {
    Iterator<KeyResolverSpi> it = KeyResolver.iterator();
    while (it.hasNext()) {
        KeyResolverSpi keyResolver = it.next();
        keyResolver.setSecureValidation(secureValidation);
        Node currentChild = this.constructionElement.getFirstChild();
        String uri = this.getBaseURI();
        while (currentChild != null) {
            if (currentChild.getNodeType() == Node.ELEMENT_NODE) {
                for (StorageResolver storage : storageResolvers) {
                    PublicKey pk =
                        keyResolver.engineLookupAndResolvePublicKey(
                            (Element) currentChild, uri, storage
                        );

                    if (pk != null) {
                        return pk;
                    }
                }
            }
            currentChild = currentChild.getNextSibling();
        }
    }
    return null;
}
Example #11
Source File: DEREncodedKeyValueResolver.java    From jdk1.8-source-analysis with Apache License 2.0 6 votes vote down vote up 
/** {@inheritDoc}. */
public PublicKey engineLookupAndResolvePublicKey(Element element, String baseURI, StorageResolver storage)
    throws KeyResolverException {

    if (log.isLoggable(java.util.logging.Level.FINE)) {
        log.log(java.util.logging.Level.FINE, "Can I resolve " + element.getTagName());
    }

    if (!engineCanResolve(element, baseURI, storage)) {
        return null;
    }

    try {
        DEREncodedKeyValue derKeyValue = new DEREncodedKeyValue(element, baseURI);
        return derKeyValue.getPublicKey();
    } catch (XMLSecurityException e) {
        if (log.isLoggable(java.util.logging.Level.FINE)) {
            log.log(java.util.logging.Level.FINE, "XMLSecurityException", e);
        }
    }

    return null;
}
Example #12
Source File: DEREncodedKeyValueResolver.java    From jdk8u_jdk with GNU General Public License v2.0 6 votes vote down vote up 
/** {@inheritDoc}. */
public PublicKey engineLookupAndResolvePublicKey(Element element, String baseURI, StorageResolver storage)
    throws KeyResolverException {

    if (log.isLoggable(java.util.logging.Level.FINE)) {
        log.log(java.util.logging.Level.FINE, "Can I resolve " + element.getTagName());
    }

    if (!engineCanResolve(element, baseURI, storage)) {
        return null;
    }

    try {
        DEREncodedKeyValue derKeyValue = new DEREncodedKeyValue(element, baseURI);
        return derKeyValue.getPublicKey();
    } catch (XMLSecurityException e) {
        if (log.isLoggable(java.util.logging.Level.FINE)) {
            log.log(java.util.logging.Level.FINE, "XMLSecurityException", e);
        }
    }

    return null;
}
Example #13
Source File: KeyInfoReferenceResolver.java    From JDKSourceCode1.8 with MIT License 6 votes vote down vote up 
/** {@inheritDoc}. */
public PrivateKey engineLookupAndResolvePrivateKey(Element element, String baseURI, StorageResolver storage)
    throws KeyResolverException {

    if (log.isLoggable(java.util.logging.Level.FINE)) {
        log.log(java.util.logging.Level.FINE, "Can I resolve " + element.getTagName());
    }

    if (!engineCanResolve(element, baseURI, storage)) {
        return null;
    }

    try {
        KeyInfo referent = resolveReferentKeyInfo(element, baseURI, storage);
        if (referent != null) {
            return referent.getPrivateKey();
        }
    } catch (XMLSecurityException e) {
        if (log.isLoggable(java.util.logging.Level.FINE)) {
            log.log(java.util.logging.Level.FINE, "XMLSecurityException", e);
        }
    }

    return null;
}
Example #14
Source File: KeyInfoReferenceResolver.java    From jdk8u_jdk with GNU General Public License v2.0 6 votes vote down vote up 
/** {@inheritDoc}. */
public X509Certificate engineLookupResolveX509Certificate(Element element, String baseURI, StorageResolver storage)
    throws KeyResolverException {

    if (log.isLoggable(java.util.logging.Level.FINE)) {
        log.log(java.util.logging.Level.FINE, "Can I resolve " + element.getTagName());
    }

    if (!engineCanResolve(element, baseURI, storage)) {
        return null;
    }

    try {
        KeyInfo referent = resolveReferentKeyInfo(element, baseURI, storage);
        if (referent != null) {
            return referent.getX509Certificate();
        }
    } catch (XMLSecurityException e) {
        if (log.isLoggable(java.util.logging.Level.FINE)) {
            log.log(java.util.logging.Level.FINE, "XMLSecurityException", e);
        }
    }

    return null;
}
Example #15
Source File: SecretKeyResolver.java    From jdk1.8-source-analysis with Apache License 2.0 6 votes vote down vote up 
/**
 * Method engineResolveSecretKey
 *
 * @param element
 * @param baseURI
 * @param storage
 * @return resolved SecretKey key or null if no {@link SecretKey} could be obtained
 *
 * @throws KeyResolverException
 */
public SecretKey engineResolveSecretKey(
    Element element, String baseURI, StorageResolver storage
) throws KeyResolverException {
    if (log.isLoggable(java.util.logging.Level.FINE)) {
        log.log(java.util.logging.Level.FINE, "Can I resolve " + element.getTagName() + "?");
    }

    if (XMLUtils.elementIsInSignatureSpace(element, Constants._TAG_KEYNAME)) {
        String keyName = element.getFirstChild().getNodeValue();
        try {
            Key key = keyStore.getKey(keyName, password);
            if (key instanceof SecretKey) {
                return (SecretKey) key;
            }
        } catch (Exception e) {
            log.log(java.util.logging.Level.FINE, "Cannot recover the key", e);
        }
    }

    log.log(java.util.logging.Level.FINE, "I can't");
    return null;
}
Example #16
Source File: KeyInfoReferenceResolver.java    From openjdk-8 with GNU General Public License v2.0 6 votes vote down vote up 
/** {@inheritDoc}. */
public PrivateKey engineLookupAndResolvePrivateKey(Element element, String baseURI, StorageResolver storage)
    throws KeyResolverException {

    if (log.isLoggable(java.util.logging.Level.FINE)) {
        log.log(java.util.logging.Level.FINE, "Can I resolve " + element.getTagName());
    }

    if (!engineCanResolve(element, baseURI, storage)) {
        return null;
    }

    try {
        KeyInfo referent = resolveReferentKeyInfo(element, baseURI, storage);
        if (referent != null) {
            return referent.getPrivateKey();
        }
    } catch (XMLSecurityException e) {
        if (log.isLoggable(java.util.logging.Level.FINE)) {
            log.log(java.util.logging.Level.FINE, "XMLSecurityException", e);
        }
    }

    return null;
}
Example #17
Source File: X509DigestResolver.java    From hottub with GNU General Public License v2.0 5 votes vote down vote up 
/** {@inheritDoc}. */
public boolean engineCanResolve(Element element, String baseURI, StorageResolver storage) {
    if (XMLUtils.elementIsInSignatureSpace(element, Constants._TAG_X509DATA)) {
        try {
            X509Data x509Data = new X509Data(element, baseURI);
            return x509Data.containsDigest();
        } catch (XMLSecurityException e) {
            return false;
        }
    } else {
        return false;
    }
}
Example #18
Source File: RetrievalMethodResolver.java    From hottub with GNU General Public License v2.0 5 votes vote down vote up 
/**
 * Retrieves a x509Certificate from the given information
 * @param e
 * @param baseURI
 * @param storage
 * @return
 * @throws KeyResolverException
 */
private static X509Certificate resolveCertificate(
    Element e, String baseURI, StorageResolver storage
) throws KeyResolverException {
    if (log.isLoggable(java.util.logging.Level.FINE)) {
        log.log(java.util.logging.Level.FINE, "Now we have a {" + e.getNamespaceURI() + "}"
            + e.getLocalName() + " Element");
    }
    // An element has been provided
    if (e != null) {
        return KeyResolver.getX509Certificate(e, baseURI, storage);
    }
    return null;
}
Example #19
Source File: X509DigestResolver.java    From jdk1.8-source-analysis with Apache License 2.0 5 votes vote down vote up 
/** {@inheritDoc}. */
public boolean engineCanResolve(Element element, String baseURI, StorageResolver storage) {
    if (XMLUtils.elementIsInSignatureSpace(element, Constants._TAG_X509DATA)) {
        try {
            X509Data x509Data = new X509Data(element, baseURI);
            return x509Data.containsDigest();
        } catch (XMLSecurityException e) {
            return false;
        }
    } else {
        return false;
    }
}
Example #20
Source File: RetrievalMethodResolver.java    From openjdk-8-source with GNU General Public License v2.0 5 votes vote down vote up 
/**
 * Retrieves a PublicKey from the given information
 * @param e
 * @param baseURI
 * @param storage
 * @return
 * @throws KeyResolverException
 */
private static PublicKey resolveKey(
    Element e, String baseURI, StorageResolver storage
) throws KeyResolverException {
    if (log.isLoggable(java.util.logging.Level.FINE)) {
        log.log(java.util.logging.Level.FINE, "Now we have a {" + e.getNamespaceURI() + "}"
            + e.getLocalName() + " Element");
    }
    // An element has been provided
    if (e != null) {
        return KeyResolver.getPublicKey(e, baseURI, storage);
    }
    return null;
}
Example #21
Source File: KeyResolverSpi.java    From jdk8u_jdk with GNU General Public License v2.0 5 votes vote down vote up 
/**
 * Method engineLookupAndResolvePrivateKey
 *
 * @param element
 * @param baseURI
 * @param storage
 * @return resolved PrivateKey key from the registered from the elements
 *
 * @throws KeyResolverException
 */
public PrivateKey engineLookupAndResolvePrivateKey(
    Element element, String baseURI, StorageResolver storage
) throws KeyResolverException {
    // This method was added later, it has no equivalent
    // engineResolvePrivateKey() in the old API.
    // We cannot throw UnsupportedOperationException because
    // KeyResolverSpi implementations who don't know about
    // this method would stop the search too early.
    return null;
}
Example #22
Source File: KeyInfo.java    From jdk1.8-source-analysis with Apache License 2.0 5 votes vote down vote up 
/**
 * Method addStorageResolver
 *
 * @param storageResolver
 */
public void addStorageResolver(StorageResolver storageResolver) {
    if (storageResolvers == nullList) {
        // Replace the default null StorageResolver
        storageResolvers = new ArrayList<StorageResolver>();
    }
    this.storageResolvers.add(storageResolver);
}
Example #23
Source File: KeyInfo.java    From JDKSourceCode1.8 with MIT License 5 votes vote down vote up 
/**
 * Searches the per-KeyInfo KeyResolvers for secret keys
 *
 * @return the secret key contained in this KeyInfo
 * @throws KeyResolverException
 */

SecretKey getSecretKeyFromInternalResolvers() throws KeyResolverException {
    for (KeyResolverSpi keyResolver : internalKeyResolvers) {
        if (log.isLoggable(java.util.logging.Level.FINE)) {
            log.log(java.util.logging.Level.FINE, "Try " + keyResolver.getClass().getName());
        }
        keyResolver.setSecureValidation(secureValidation);
        Node currentChild = this.constructionElement.getFirstChild();
        String uri = this.getBaseURI();
        while (currentChild != null)      {
            if (currentChild.getNodeType() == Node.ELEMENT_NODE) {
                for (StorageResolver storage : storageResolvers) {
                    SecretKey sk =
                        keyResolver.engineLookupAndResolveSecretKey(
                            (Element) currentChild, uri, storage
                        );

                    if (sk != null) {
                        return sk;
                    }
                }
            }
            currentChild = currentChild.getNextSibling();
        }
    }

    return null;
}
Example #24
Source File: X509CertificateResolver.java    From jdk8u60 with GNU General Public License v2.0 5 votes vote down vote up 
/**
 * Method engineResolveX509Certificate
 * @inheritDoc
 * @param element
 * @param BaseURI
 * @param storage
 *
 * @throws KeyResolverException
 */
public X509Certificate engineLookupResolveX509Certificate(
    Element element, String BaseURI, StorageResolver storage
) throws KeyResolverException {

    try {
        Element[] els =
            XMLUtils.selectDsNodes(element.getFirstChild(), Constants._TAG_X509CERTIFICATE);
        if ((els == null) || (els.length == 0)) {
            Element el =
                XMLUtils.selectDsNode(element.getFirstChild(), Constants._TAG_X509DATA, 0);
            if (el != null) {
                return engineLookupResolveX509Certificate(el, BaseURI, storage);
            }
            return null;
        }

        // populate Object array
        for (int i = 0; i < els.length; i++) {
            XMLX509Certificate xmlCert = new XMLX509Certificate(els[i], BaseURI);
            X509Certificate cert = xmlCert.getX509Certificate();
            if (cert != null) {
                return cert;
            }
        }
        return null;
    } catch (XMLSecurityException ex) {
        if (log.isLoggable(java.util.logging.Level.FINE)) {
            log.log(java.util.logging.Level.FINE, "XMLSecurityException", ex);
        }
        throw new KeyResolverException("generic.EmptyMessage", ex);
    }
}
Example #25
Source File: X509IssuerSerialResolver.java    From openjdk-8-source with GNU General Public License v2.0 5 votes vote down vote up 
/** @inheritDoc */
public PublicKey engineLookupAndResolvePublicKey(
    Element element, String baseURI, StorageResolver storage
) throws KeyResolverException {

    X509Certificate cert =
        this.engineLookupResolveX509Certificate(element, baseURI, storage);

    if (cert != null) {
        return cert.getPublicKey();
    }

    return null;
}
Example #26
Source File: RetrievalMethodResolver.java    From openjdk-jdk9 with GNU General Public License v2.0 5 votes vote down vote up 
/**
 * Retrieves a x509Certificate from the given information
 * @param e
 * @param baseURI
 * @param storage
 * @return
 * @throws KeyResolverException
 */
private static X509Certificate resolveCertificate(
    Element e, String baseURI, StorageResolver storage
) throws KeyResolverException {
    if (log.isLoggable(java.util.logging.Level.FINE)) {
        log.log(java.util.logging.Level.FINE, "Now we have a {" + e.getNamespaceURI() + "}"
            + e.getLocalName() + " Element");
    }
    // An element has been provided
    if (e != null) {
        return KeyResolver.getX509Certificate(e, baseURI, storage);
    }
    return null;
}
Example #27
Source File: X509IssuerSerialResolver.java    From openjdk-8 with GNU General Public License v2.0 5 votes vote down vote up 
/** @inheritDoc */
public PublicKey engineLookupAndResolvePublicKey(
    Element element, String baseURI, StorageResolver storage
) throws KeyResolverException {

    X509Certificate cert =
        this.engineLookupResolveX509Certificate(element, baseURI, storage);

    if (cert != null) {
        return cert.getPublicKey();
    }

    return null;
}
Example #28
Source File: X509SubjectNameResolver.java    From TencentKona-8 with GNU General Public License v2.0 5 votes vote down vote up 
/**
 * Method engineResolvePublicKey
 *
 * @param element
 * @param BaseURI
 * @param storage
 * @return null if no {@link PublicKey} could be obtained
 * @throws KeyResolverException
 */
public PublicKey engineLookupAndResolvePublicKey(
    Element element, String baseURI, StorageResolver storage
) throws KeyResolverException {

    X509Certificate cert =
        this.engineLookupResolveX509Certificate(element, baseURI, storage);

    if (cert != null) {
        return cert.getPublicKey();
    }

    return null;
}
Example #29
Source File: X509SubjectNameResolver.java    From jdk8u-jdk with GNU General Public License v2.0 5 votes vote down vote up 
/**
 * Method engineResolvePublicKey
 *
 * @param element
 * @param BaseURI
 * @param storage
 * @return null if no {@link PublicKey} could be obtained
 * @throws KeyResolverException
 */
public PublicKey engineLookupAndResolvePublicKey(
    Element element, String baseURI, StorageResolver storage
) throws KeyResolverException {

    X509Certificate cert =
        this.engineLookupResolveX509Certificate(element, baseURI, storage);

    if (cert != null) {
        return cert.getPublicKey();
    }

    return null;
}
Example #30
Source File: RetrievalMethodResolver.java    From openjdk-8 with GNU General Public License v2.0 5 votes vote down vote up 
/**
 * Retrieves a x509Certificate from the given information
 * @param e
 * @param baseURI
 * @param storage
 * @return
 * @throws KeyResolverException
 */
private static X509Certificate resolveCertificate(
    Element e, String baseURI, StorageResolver storage
) throws KeyResolverException {
    if (log.isLoggable(java.util.logging.Level.FINE)) {
        log.log(java.util.logging.Level.FINE, "Now we have a {" + e.getNamespaceURI() + "}"
            + e.getLocalName() + " Element");
    }
    // An element has been provided
    if (e != null) {
        return KeyResolver.getX509Certificate(e, baseURI, storage);
    }
    return null;
}