java/7 : com/sun/org/apache/xml/internal/security/signature/Manifest.java

Manifest
https://openjdk.java.net/
GPLv2 + Classpath Exception
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 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
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package com.sun.org.apache.xml.internal.security.signature;

import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;

import javax.xml.parsers.ParserConfigurationException;

import com.sun.org.apache.xml.internal.security.c14n.CanonicalizationException;
import com.sun.org.apache.xml.internal.security.c14n.InvalidCanonicalizerException;
import com.sun.org.apache.xml.internal.security.exceptions.XMLSecurityException;
import com.sun.org.apache.xml.internal.security.transforms.Transforms;
import com.sun.org.apache.xml.internal.security.utils.Constants;
import com.sun.org.apache.xml.internal.security.utils.I18n;
import com.sun.org.apache.xml.internal.security.utils.SignatureElementProxy;
import com.sun.org.apache.xml.internal.security.utils.XMLUtils;
import com.sun.org.apache.xml.internal.security.utils.resolver.ResourceResolver;
import com.sun.org.apache.xml.internal.security.utils.resolver.ResourceResolverSpi;
import org.w3c.dom.Attr;
import org.w3c.dom.DOMException;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.xml.sax.SAXException;

Handles <ds:Manifest> elements.
 This element holds the Reference elements
/**
 * Handles <code>&lt;ds:Manifest&gt;</code> elements.
 * <p> This element holds the <code>Reference</code> elements</p>
 */
public class Manifest extends SignatureElementProxy {

    The maximum number of references per Manifest, if secure validation is enabled.
/**
     * The maximum number of references per Manifest, if secure validation is enabled.
     */
    public static final int MAXIMUM_REFERENCE_COUNT = 30;

    logging logging facility /** {@link org.apache.commons.logging} logging facility */
    private static java.util.logging.Logger log =
        java.util.logging.Logger.getLogger(Manifest.class.getName());

    Field references /** Field references */
    private List<Reference> references;
    private Element[] referencesEl;

    Field verificationResults[] /** Field verificationResults[] */
    private boolean verificationResults[] = null;

    Field resolverProperties /** Field resolverProperties */
    private Map<String, String> resolverProperties = null;

    Field perManifestResolvers /** Field perManifestResolvers */
    private List<ResourceResolver> perManifestResolvers = null;

    private boolean secureValidation;

    Constructs Manifest 
Params: doc – the Document in which XMLsignature is placed/**
     * Constructs {@link Manifest}
     *
     * @param doc the {@link Document} in which <code>XMLsignature</code> is placed
     */
    public Manifest(Document doc) {
        super(doc);

        XMLUtils.addReturnToElement(this.constructionElement);

        this.references = new ArrayList<Reference>();
    }

    Constructor Manifest
Params: element – 
baseURI – 
Throws: XMLSecurityException – /**
     * Constructor Manifest
     *
     * @param element
     * @param baseURI
     * @throws XMLSecurityException
     */
    public Manifest(Element element, String baseURI) throws XMLSecurityException {
        this(element, baseURI, false);

    }
    Constructor Manifest
Params: element – 
baseURI – 
secureValidation – 
Throws: XMLSecurityException – /**
     * Constructor Manifest
     *
     * @param element
     * @param baseURI
     * @param secureValidation
     * @throws XMLSecurityException
     */
    public Manifest(
        Element element, String baseURI, boolean secureValidation
    ) throws XMLSecurityException {
        super(element, baseURI);

        Attr attr = element.getAttributeNodeNS(null, "Id");
        if (attr != null) {
            element.setIdAttributeNode(attr, true);
        }
        this.secureValidation = secureValidation;

        // check out Reference children
        this.referencesEl =
            XMLUtils.selectDsNodes(
                this.constructionElement.getFirstChild(), Constants._TAG_REFERENCE
            );
        int le = this.referencesEl.length;
        if (le == 0) {
            // At least one Reference must be present. Bad.
            Object exArgs[] = { Constants._TAG_REFERENCE, Constants._TAG_MANIFEST };

            throw new DOMException(DOMException.WRONG_DOCUMENT_ERR,
                                   I18n.translate("xml.WrongContent", exArgs));
        }

        if (secureValidation && le > MAXIMUM_REFERENCE_COUNT) {
            Object exArgs[] = { le, MAXIMUM_REFERENCE_COUNT };

            throw new XMLSecurityException("signature.tooManyReferences", exArgs);
        }

        // create List
        this.references = new ArrayList<Reference>(le);

        for (int i = 0; i < le; i++) {
            Element refElem = referencesEl[i];
            Attr refAttr = refElem.getAttributeNodeNS(null, "Id");
            if (refAttr != null) {
                refElem.setIdAttributeNode(refAttr, true);
            }
            this.references.add(null);
        }
    }

    This addDocument method is used to add a new resource to the signed info. A Reference is built from the supplied values. 
Params: baseURI – the URI of the resource where the XML instance was stored
referenceURI – URI attribute in Reference for specifying
where data is
transforms – com.sun.org.apache.xml.internal.security.signature.Transforms object with an ordered
list of transformations to be performed.
digestURI – The digest algorithm URI to be used.
referenceId – 
referenceType – 
Throws: XMLSignatureException – /**
     * This <code>addDocument</code> method is used to add a new resource to the
     * signed info. A {@link com.sun.org.apache.xml.internal.security.signature.Reference} is built
     * from the supplied values.
     *
     * @param baseURI the URI of the resource where the XML instance was stored
     * @param referenceURI <code>URI</code> attribute in <code>Reference</code> for specifying
     * where data is
     * @param transforms com.sun.org.apache.xml.internal.security.signature.Transforms object with an ordered
     * list of transformations to be performed.
     * @param digestURI The digest algorithm URI to be used.
     * @param referenceId
     * @param referenceType
     * @throws XMLSignatureException
     */
    public void addDocument(
        String baseURI, String referenceURI, Transforms transforms,
        String digestURI, String referenceId, String referenceType
    ) throws XMLSignatureException {
        // the this.doc is handed implicitly by the this.getOwnerDocument()
        Reference ref =
            new Reference(this.doc, baseURI, referenceURI, this, transforms, digestURI);

        if (referenceId != null) {
            ref.setId(referenceId);
        }

        if (referenceType != null) {
            ref.setType(referenceType);
        }

        // add Reference object to our cache vector
        this.references.add(ref);

        // add the Element of the Reference object to the Manifest/SignedInfo
        this.constructionElement.appendChild(ref.getElement());
        XMLUtils.addReturnToElement(this.constructionElement);
    }

    The calculation of the DigestValues in the References must be after the
References are already added to the document and during the signing
process. This ensures that all necessary data is in place.
Throws: ReferenceNotInitializedException – 
XMLSignatureException – /**
     * The calculation of the DigestValues in the References must be after the
     * References are already added to the document and during the signing
     * process. This ensures that all necessary data is in place.
     *
     * @throws ReferenceNotInitializedException
     * @throws XMLSignatureException
     */
    public void generateDigestValues()
        throws XMLSignatureException, ReferenceNotInitializedException {
        for (int i = 0; i < this.getLength(); i++) {
            // update the cached Reference object, the Element content is automatically updated
            Reference currentRef = this.references.get(i);
            currentRef.generateDigestValue();
        }
    }

    Return the nonnegative number of added references.
Returns: the number of references/**
     * Return the nonnegative number of added references.
     *
     * @return the number of references
     */
    public int getLength() {
        return this.references.size();
    }

    Return the i^th reference. Valid i
values are 0 to {link@ getSize}-1.
Params: i – Index of the requested Reference
Throws: XMLSecurityException – 
Returns: the i^th reference/**
     * Return the <it>i</it><sup>th</sup> reference. Valid <code>i</code>
     * values are 0 to <code>{link@ getSize}-1</code>.
     *
     * @param i Index of the requested {@link Reference}
     * @return the <it>i</it><sup>th</sup> reference
     * @throws XMLSecurityException
     */
    public Reference item(int i) throws XMLSecurityException {
        if (this.references.get(i) == null) {
            // not yet constructed, so _we_ have to
            Reference ref =
                new Reference(referencesEl[i], this.baseURI, this, secureValidation);

            this.references.set(i, ref);
        }

        return this.references.get(i);
    }

    Sets the Id attribute
Params: Id – the Id attribute in ds:Manifest/**
     * Sets the <code>Id</code> attribute
     *
     * @param Id the <code>Id</code> attribute in <code>ds:Manifest</code>
     */
    public void setId(String Id) {
        if (Id != null) {
            this.constructionElement.setAttributeNS(null, Constants._ATT_ID, Id);
            this.constructionElement.setIdAttributeNS(null, Constants._ATT_ID, true);
        }
    }

    Returns the Id attribute
Returns: the Id attribute in ds:Manifest/**
     * Returns the <code>Id</code> attribute
     *
     * @return the <code>Id</code> attribute in <code>ds:Manifest</code>
     */
    public String getId() {
        return this.constructionElement.getAttributeNS(null, Constants._ATT_ID);
    }

    Used to do a reference
validation of all enclosed references using the Reference.verify method. This step loops through all References and does verify the hash values. If one or more verifications fail, the method returns false. If all verifications are successful,
it returns true. The results of the individual reference validations are available by using the getVerificationResult(int) method 
Throws: MissingResourceFailureException – if a Reference does not verify (throws a ReferenceNotInitializedException because of an uninitialized XMLSignatureInput
XMLSecurityException – 
See Also: Reference.verify
SignedInfo.verify()
MissingResourceFailureException
Returns: true if all References verify, false if one or more do not verify./**
     * Used to do a <A HREF="http://www.w3.org/TR/xmldsig-core/#def-ValidationReference">reference
     * validation</A> of all enclosed references using the {@link Reference#verify} method.
     *
     * <p>This step loops through all {@link Reference}s and does verify the hash
     * values. If one or more verifications fail, the method returns
     * <code>false</code>. If <i>all</i> verifications are successful,
     * it returns <code>true</code>. The results of the individual reference
     * validations are available by using the {@link #getVerificationResult(int)} method
     *
     * @return true if all References verify, false if one or more do not verify.
     * @throws MissingResourceFailureException if a {@link Reference} does not verify
     * (throws a {@link com.sun.org.apache.xml.internal.security.signature.ReferenceNotInitializedException}
     * because of an uninitialized {@link XMLSignatureInput}
     * @see com.sun.org.apache.xml.internal.security.signature.Reference#verify
     * @see com.sun.org.apache.xml.internal.security.signature.SignedInfo#verify()
     * @see com.sun.org.apache.xml.internal.security.signature.MissingResourceFailureException
     * @throws XMLSecurityException
     */
    public boolean verifyReferences()
        throws MissingResourceFailureException, XMLSecurityException {
        return this.verifyReferences(false);
    }

    Used to do a reference
validation of all enclosed references using the Reference.verify method. This step loops through all References and does verify the hash values. If one or more verifications fail, the method returns false. If all verifications are successful,
it returns true. The results of the individual reference validations are available by using the getVerificationResult(int) method 
Params: followManifests – 
Throws: MissingResourceFailureException – if a Reference does not verify (throws a ReferenceNotInitializedException because of an uninitialized XMLSignatureInput
XMLSecurityException – 
See Also: Reference.verify
SignedInfo.verify(boolean)
MissingResourceFailureException
Returns: true if all References verify, false if one or more do not verify./**
     * Used to do a <A HREF="http://www.w3.org/TR/xmldsig-core/#def-ValidationReference">reference
     * validation</A> of all enclosed references using the {@link Reference#verify} method.
     *
     * <p>This step loops through all {@link Reference}s and does verify the hash
     * values. If one or more verifications fail, the method returns
     * <code>false</code>. If <i>all</i> verifications are successful,
     * it returns <code>true</code>. The results of the individual reference
     * validations are available by using the {@link #getVerificationResult(int)} method
     *
     * @param followManifests
     * @return true if all References verify, false if one or more do not verify.
     * @throws MissingResourceFailureException if a {@link Reference} does not verify
     * (throws a {@link com.sun.org.apache.xml.internal.security.signature.ReferenceNotInitializedException}
     * because of an uninitialized {@link XMLSignatureInput}
     * @see com.sun.org.apache.xml.internal.security.signature.Reference#verify
     * @see com.sun.org.apache.xml.internal.security.signature.SignedInfo#verify(boolean)
     * @see com.sun.org.apache.xml.internal.security.signature.MissingResourceFailureException
     * @throws XMLSecurityException
     */
    public boolean verifyReferences(boolean followManifests)
        throws MissingResourceFailureException, XMLSecurityException {
        if (referencesEl == null) {
            this.referencesEl =
                XMLUtils.selectDsNodes(
                    this.constructionElement.getFirstChild(), Constants._TAG_REFERENCE
                );
        }
        if (log.isLoggable(java.util.logging.Level.FINE)) {
            log.log(java.util.logging.Level.FINE, "verify " + referencesEl.length + " References");
            log.log(java.util.logging.Level.FINE, "I am " + (followManifests
                ? "" : "not") + " requested to follow nested Manifests");
        }
        if (referencesEl.length == 0) {
            throw new XMLSecurityException("empty");
        }
        if (secureValidation && referencesEl.length > MAXIMUM_REFERENCE_COUNT) {
            Object exArgs[] = { referencesEl.length, MAXIMUM_REFERENCE_COUNT };

            throw new XMLSecurityException("signature.tooManyReferences", exArgs);
        }

        this.verificationResults = new boolean[referencesEl.length];
        boolean verify = true;
        for (int i = 0; i < this.referencesEl.length; i++) {
            Reference currentRef =
                new Reference(referencesEl[i], this.baseURI, this, secureValidation);

            this.references.set(i, currentRef);

            // if only one item does not verify, the whole verification fails
            try {
                boolean currentRefVerified = currentRef.verify();

                this.setVerificationResult(i, currentRefVerified);

                if (!currentRefVerified) {
                    verify = false;
                }
                if (log.isLoggable(java.util.logging.Level.FINE)) {
                    log.log(java.util.logging.Level.FINE, "The Reference has Type " + currentRef.getType());
                }

                // was verification successful till now and do we want to verify the Manifest?
                if (verify && followManifests && currentRef.typeIsReferenceToManifest()) {
                    if (log.isLoggable(java.util.logging.Level.FINE)) {
                        log.log(java.util.logging.Level.FINE, "We have to follow a nested Manifest");
                    }

                    try {
                        XMLSignatureInput signedManifestNodes =
                            currentRef.dereferenceURIandPerformTransforms(null);
                        Set<Node> nl = signedManifestNodes.getNodeSet();
                        Manifest referencedManifest = null;
                        Iterator<Node> nlIterator = nl.iterator();

                        findManifest: while (nlIterator.hasNext()) {
                            Node n = nlIterator.next();

                            if ((n.getNodeType() == Node.ELEMENT_NODE)
                                && ((Element) n).getNamespaceURI().equals(Constants.SignatureSpecNS)
                                && ((Element) n).getLocalName().equals(Constants._TAG_MANIFEST)
                            ) {
                                try {
                                    referencedManifest =
                                        new Manifest(
                                             (Element)n, signedManifestNodes.getSourceURI(), secureValidation
                                        );
                                    break findManifest;
                                } catch (XMLSecurityException ex) {
                                    if (log.isLoggable(java.util.logging.Level.FINE)) {
                                        log.log(java.util.logging.Level.FINE, ex.getMessage(), ex);
                                    }
                                    // Hm, seems not to be a ds:Manifest
                                }
                            }
                        }

                        if (referencedManifest == null) {
                            // The Reference stated that it points to a ds:Manifest
                            // but we did not find a ds:Manifest in the signed area
                            throw new MissingResourceFailureException("empty", currentRef);
                        }

                        referencedManifest.perManifestResolvers = this.perManifestResolvers;
                        referencedManifest.resolverProperties = this.resolverProperties;

                        boolean referencedManifestValid =
                            referencedManifest.verifyReferences(followManifests);

                        if (!referencedManifestValid) {
                            verify = false;

                            log.log(java.util.logging.Level.WARNING, "The nested Manifest was invalid (bad)");
                        } else {
                            if (log.isLoggable(java.util.logging.Level.FINE)) {
                                log.log(java.util.logging.Level.FINE, "The nested Manifest was valid (good)");
                            }
                        }
                    } catch (IOException ex) {
                        throw new ReferenceNotInitializedException("empty", ex);
                    } catch (ParserConfigurationException ex) {
                        throw new ReferenceNotInitializedException("empty", ex);
                    } catch (SAXException ex) {
                        throw new ReferenceNotInitializedException("empty", ex);
                    }
                }
            } catch (ReferenceNotInitializedException ex) {
                Object exArgs[] = { currentRef.getURI() };

                throw new MissingResourceFailureException(
                    "signature.Verification.Reference.NoInput", exArgs, ex, currentRef
                );
            }
        }

        return verify;
    }

    Method setVerificationResult
Params: index – 
verify – /**
     * Method setVerificationResult
     *
     * @param index
     * @param verify
     */
    private void setVerificationResult(int index, boolean verify) {
        if (this.verificationResults == null) {
            this.verificationResults = new boolean[this.getLength()];
        }

        this.verificationResults[index] = verify;
    }

    After verifying a Manifest or a SignedInfo using the verifyReferences() or SignedInfo.verify() methods, the individual results can be retrieved with this method. 
Params: index – an index of into a Manifest or a SignedInfo
Throws: XMLSecurityException – 
Returns: the results of reference validation at the specified index/**
     * After verifying a {@link Manifest} or a {@link SignedInfo} using the
     * {@link Manifest#verifyReferences()} or {@link SignedInfo#verify()} methods,
     * the individual results can be retrieved with this method.
     *
     * @param index an index of into a {@link Manifest} or a {@link SignedInfo}
     * @return the results of reference validation at the specified index
     * @throws XMLSecurityException
     */
    public boolean getVerificationResult(int index) throws XMLSecurityException {
        if ((index < 0) || (index > this.getLength() - 1)) {
            Object exArgs[] = { Integer.toString(index), Integer.toString(this.getLength()) };
            Exception e =
                new IndexOutOfBoundsException(
                    I18n.translate("signature.Verification.IndexOutOfBounds", exArgs)
                );

            throw new XMLSecurityException("generic.EmptyMessage", e);
        }

        if (this.verificationResults == null) {
            try {
                this.verifyReferences();
            } catch (Exception ex) {
                throw new XMLSecurityException("generic.EmptyMessage", ex);
            }
        }

        return this.verificationResults[index];
    }

    Adds Resource Resolver for retrieving resources at specified URI attribute
in reference element
Params: resolver – ResourceResolver can provide the implemenatin subclass of ResourceResolverSpi for retrieving resource./**
     * Adds Resource Resolver for retrieving resources at specified <code>URI</code> attribute
     * in <code>reference</code> element
     *
     * @param resolver {@link ResourceResolver} can provide the implemenatin subclass of
     * {@link ResourceResolverSpi} for retrieving resource.
     */
    public void addResourceResolver(ResourceResolver resolver) {
        if (resolver == null) {
            return;
        }
        if (perManifestResolvers == null) {
            perManifestResolvers = new ArrayList<ResourceResolver>();
        }
        this.perManifestResolvers.add(resolver);
    }

    Adds Resource Resolver for retrieving resources at specified URI attribute
in reference element
Params: resolverSpi – the implementation subclass of ResourceResolverSpi for retrieving the resource./**
     * Adds Resource Resolver for retrieving resources at specified <code>URI</code> attribute
     * in <code>reference</code> element
     *
     * @param resolverSpi the implementation subclass of {@link ResourceResolverSpi} for
     * retrieving the resource.
     */
    public void addResourceResolver(ResourceResolverSpi resolverSpi) {
        if (resolverSpi == null) {
            return;
        }
        if (perManifestResolvers == null) {
            perManifestResolvers = new ArrayList<ResourceResolver>();
        }
        perManifestResolvers.add(new ResourceResolver(resolverSpi));
    }

    Get the Per-Manifest Resolver List
Returns: the per-manifest Resolver List/**
     * Get the Per-Manifest Resolver List
     * @return the per-manifest Resolver List
     */
    public List<ResourceResolver> getPerManifestResolvers() {
        return perManifestResolvers;
    }

    Get the resolver property map
Returns: the resolver property map/**
     * Get the resolver property map
     * @return the resolver property map
     */
    public Map<String, String> getResolverProperties() {
        return resolverProperties;
    }

    Used to pass parameters like proxy servers etc to the ResourceResolver
implementation.
Params: key – the key
value – the value/**
     * Used to pass parameters like proxy servers etc to the ResourceResolver
     * implementation.
     *
     * @param key the key
     * @param value the value
     */
    public void setResolverProperty(String key, String value) {
        if (resolverProperties == null) {
            resolverProperties = new HashMap<String, String>(10);
        }
        this.resolverProperties.put(key, value);
    }

    Returns the value at specified key
Params: key – the key
Returns: the value/**
     * Returns the value at specified key
     *
     * @param key the key
     * @return the value
     */
    public String getResolverProperty(String key) {
        return this.resolverProperties.get(key);
    }

    Method getSignedContentItem
Params: i – 
Throws: XMLSignatureException – 
Returns: The signed content of the i reference./**
     * Method getSignedContentItem
     *
     * @param i
     * @return The signed content of the i reference.
     *
     * @throws XMLSignatureException
     */
    public byte[] getSignedContentItem(int i) throws XMLSignatureException {
        try {
            return this.getReferencedContentAfterTransformsItem(i).getBytes();
        } catch (IOException ex) {
            throw new XMLSignatureException("empty", ex);
        } catch (CanonicalizationException ex) {
            throw new XMLSignatureException("empty", ex);
        } catch (InvalidCanonicalizerException ex) {
            throw new XMLSignatureException("empty", ex);
        } catch (XMLSecurityException ex) {
            throw new XMLSignatureException("empty", ex);
        }
    }

    Method getReferencedContentPriorTransformsItem
Params: i – 
Throws: XMLSecurityException – 
Returns: The contents before transformation of the reference i./**
     * Method getReferencedContentPriorTransformsItem
     *
     * @param i
     * @return The contents before transformation of the reference i.
     * @throws XMLSecurityException
     */
    public XMLSignatureInput getReferencedContentBeforeTransformsItem(int i)
        throws XMLSecurityException {
        return this.item(i).getContentsBeforeTransformation();
    }

    Method getReferencedContentAfterTransformsItem
Params: i – 
Throws: XMLSecurityException – 
Returns: The contents after transformation of the reference i./**
     * Method getReferencedContentAfterTransformsItem
     *
     * @param i
     * @return The contents after transformation of the reference i.
     * @throws XMLSecurityException
     */
    public XMLSignatureInput getReferencedContentAfterTransformsItem(int i)
        throws XMLSecurityException {
        return this.item(i).getContentsAfterTransformation();
    }

    Method getSignedContentLength
Returns: The number of references contained in this reference./**
     * Method getSignedContentLength
     *
     * @return The number of references contained in this reference.
     */
    public int getSignedContentLength() {
        return this.getLength();
    }

    Method getBaseLocalName
@inheritDoc /**
     * Method getBaseLocalName
     *
     * @inheritDoc
     */
    public String getBaseLocalName() {
        return Constants._TAG_MANIFEST;
    }
}
Params:	element – baseURI –
Throws:	XMLSecurityException –
Params:	element – baseURI – secureValidation –
Throws:	XMLSecurityException –
Params:	baseURI – the URI of the resource where the XML instance was stored referenceURI – `URI` attribute in `Reference` for specifying where data is transforms – com.sun.org.apache.xml.internal.security.signature.Transforms object with an ordered list of transformations to be performed. digestURI – The digest algorithm URI to be used. referenceId – referenceType –
Throws:	XMLSignatureException –
Params:	i – Index of the requested `Reference`
Throws:	XMLSecurityException –
Returns:	the i^th reference
Throws:	MissingResourceFailureException – if a `Reference` does not verify (throws a `ReferenceNotInitializedException` because of an uninitialized `XMLSignatureInput` XMLSecurityException –
See Also:	Reference.verify SignedInfo.verify() MissingResourceFailureException
Returns:	true if all References verify, false if one or more do not verify.
Params:	followManifests –
Throws:	MissingResourceFailureException – if a `Reference` does not verify (throws a `ReferenceNotInitializedException` because of an uninitialized `XMLSignatureInput` XMLSecurityException –
See Also:	Reference.verify SignedInfo.verify(boolean) MissingResourceFailureException
Returns:	true if all References verify, false if one or more do not verify.
Params:	index – an index of into a `Manifest` or a `SignedInfo`
Throws:	XMLSecurityException –
Returns:	the results of reference validation at the specified index
Params:	i –
Throws:	XMLSignatureException –
Returns:	The signed content of the i reference.
/

java/ 7/ com/sun/org/apache/xml/internal/security/signature/Manifest.java
