import com.sun.org.apache.xml.internal.security.keys.KeyInfo; //导入依赖的package包/类
/**
 * @param element
 * @return a new KeyInfo
 * @throws XMLEncryptionException
 */
KeyInfo newKeyInfo(Element element) throws XMLEncryptionException {
    try {
        KeyInfo ki = new KeyInfo(element, null);
        ki.setSecureValidation(secureValidation);
        if (internalKeyResolvers != null) {
            int size = internalKeyResolvers.size();
            for (int i = 0; i < size; i++) {
                ki.registerInternalKeyResolver(internalKeyResolvers.get(i));
            }
        }
        return ki;
    } catch (XMLSecurityException xse) {
        throw new XMLEncryptionException("Error loading Key Info", xse);
    }
}
 

import com.sun.org.apache.xml.internal.security.keys.KeyInfo; //导入依赖的package包/类
/** {@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 {
        KeyInfo referent = resolveReferentKeyInfo(element, baseURI, storage);
        if (referent != null) {
            return referent.getPublicKey();
        }
    } catch (XMLSecurityException e) {
        if (log.isLoggable(java.util.logging.Level.FINE)) {
            log.log(java.util.logging.Level.FINE, "XMLSecurityException", e);
        }
    }

    return null;
}
 

import com.sun.org.apache.xml.internal.security.keys.KeyInfo; //导入依赖的package包/类
/** {@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;
}
 

import com.sun.org.apache.xml.internal.security.keys.KeyInfo; //导入依赖的package包/类
/** {@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;
}
 

import com.sun.org.apache.xml.internal.security.keys.KeyInfo; //导入依赖的package包/类
/** {@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;
}
 

import com.sun.org.apache.xml.internal.security.keys.KeyInfo; //导入依赖的package包/类
/**
 * Validate the Element referred to by the KeyInfoReference.
 *
 * @param referentElement
 *
 * @throws XMLSecurityException
 */
private void validateReference(Element referentElement) throws XMLSecurityException {
    if (!XMLUtils.elementIsInSignatureSpace(referentElement, Constants._TAG_KEYINFO)) {
        Object exArgs[] = { new QName(referentElement.getNamespaceURI(), referentElement.getLocalName()) };
        throw new XMLSecurityException("KeyInfoReferenceResolver.InvalidReferentElement.WrongType", exArgs);
    }

    KeyInfo referent = new KeyInfo(referentElement, "");
    if (referent.containsKeyInfoReference()) {
        if (secureValidation) {
            throw new XMLSecurityException("KeyInfoReferenceResolver.InvalidReferentElement.ReferenceWithSecure");
        } else {
            // Don't support chains of references at this time. If do support in the future, this is where the code
            // would go to validate that don't have a cycle, resulting in an infinite loop. This may be unrealistic
            // to implement, and/or very expensive given remote URI references.
            throw new XMLSecurityException("KeyInfoReferenceResolver.InvalidReferentElement.ReferenceWithoutSecure");
        }
    }

}