Examples of org.apache.xml.security.keys.KeyInfo

org.apache.xml.security.keys.KeyInfo
This class stand for KeyInfo Element that may contain keys, names, certificates and other public key management information, such as in-band key distribution or key agreement data.
KeyInfo Element has two basic functions: One is KeyResolve for getting the public key in signature validation processing. the other one is toElement for getting the element in signature generation processing.
The lengthXXX() methods provide access to the internal Key objects:
- If the KeyInfo was constructed from an Element (Signature verification), the lengthXXX() methods searches for child elements of ds:KeyInfo for known types.
- If the KeyInfo was constructed from scratch (during Signature generation), the lengthXXX() methods return the number of XXX objects already passed to the KeyInfo
The addXXX() methods are used for adding Objects of the appropriate type to the KeyInfo. This is used during signature generation.
The itemXXX(int i) methods return the i'th object of the corresponding type.
The containsXXX() methods return whether the KeyInfo contains the corresponding type. @author $Author: vdkoogh $

            XMLCipher newCipher = XMLCipher.getInstance(keyTransportAlgorithm);
            newCipher.init(XMLCipher.WRAP_MODE, wrappingKey);
            EncryptedKey encryptedKey = newCipher.encryptKey(document, secretKey);
            if (includeWrappingKeyInfo && wrappingKey instanceof PublicKey) {
                // Create a KeyInfo for the EncryptedKey
                KeyInfo encryptedKeyKeyInfo = encryptedKey.getKeyInfo();
                if (encryptedKeyKeyInfo == null) {
                    encryptedKeyKeyInfo = new KeyInfo(document);
                    encryptedKeyKeyInfo.getElement().setAttributeNS(
                        "http://www.w3.org/2000/xmlns/", "xmlns:dsig", "http://www.w3.org/2000/09/xmldsig#"
                    );
                    encryptedKey.setKeyInfo(encryptedKeyKeyInfo);
                }
                encryptedKeyKeyInfo.add((PublicKey)wrappingKey);
            }
            
            EncryptedData builder = cipher.getEncryptedData();


            KeyInfo builderKeyInfo = builder.getKeyInfo();
            if (builderKeyInfo == null) {
                builderKeyInfo = new KeyInfo(document);
                builderKeyInfo.getElement().setAttributeNS(
                    "http://www.w3.org/2000/xmlns/", "xmlns:dsig", "http://www.w3.org/2000/09/xmldsig#"
                );
                builder.setKeyInfo(builderKeyInfo);
            }


            builderKeyInfo.add(encryptedKey);
        }
        
        XPathFactory xpf = XPathFactory.newInstance();
        XPath xpath = xpf.newXPath();
        xpath.setNamespaceContext(new DSNamespaceContext());

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        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.isDebugEnabled()) {
                log.debug("XMLSecurityException", e);
            }

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        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.isDebugEnabled()) {
                log.debug("XMLSecurityException", e);
            }

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        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.isDebugEnabled()) {
                log.debug("XMLSecurityException", e);
            }

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        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.isDebugEnabled()) {
                log.debug("XMLSecurityException", e);
            }

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            return null;
        }


        validateReference(referentElement);


        KeyInfo referent = new KeyInfo(referentElement, baseURI);
        referent.addStorageResolver(storage);
        return referent;
    }

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        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

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        markKeyInfoIdAttrs(doc);


        Element referenceElement = doc.getElementById("theReference");
        assertNotNull(referenceElement);


        KeyInfo keyInfo = new KeyInfo(referenceElement, "");
        assertEquals(rsaKeyControl, keyInfo.getPublicKey());
    }

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        markKeyInfoIdAttrs(doc);


        Element referenceElement = doc.getElementById("theReference");
        assertNotNull(referenceElement);


        KeyInfo keyInfo = new KeyInfo(referenceElement, "");
        assertEquals(certControl, keyInfo.getX509Certificate());
        assertEquals(certControl.getPublicKey(), keyInfo.getPublicKey());
    }

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        }


        Element referenceElement = doc.getElementById("theReference");
        assertNotNull(referenceElement);


        KeyInfo keyInfo = new KeyInfo(referenceElement, "");
        assertNull(keyInfo.getPublicKey());
    }

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