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 $

            // encrypt
            cipher = XMLCipher.getInstance(XMLCipher.AES_128);
            cipher.init(XMLCipher.ENCRYPT_MODE, key);
      EncryptedData builder = cipher.getEncryptedData();


      KeyInfo builderKeyInfo = builder.getKeyInfo();
      if (builderKeyInfo == null) {
        builderKeyInfo = new KeyInfo(d);
        builder.setKeyInfo(builderKeyInfo);
      }


      builderKeyInfo.add(encryptedKey);


            ed = cipher.doFinal(d, e);


            //decrypt
      key = null;

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            // encrypt
            cipher = XMLCipher.getInstance(XMLCipher.AES_256);
            cipher.init(XMLCipher.ENCRYPT_MODE, key);
      EncryptedData builder = cipher.getEncryptedData();


      KeyInfo builderKeyInfo = builder.getKeyInfo();
      if (builderKeyInfo == null) {
        builderKeyInfo = new KeyInfo(d);
        builder.setKeyInfo(builderKeyInfo);
      }


      builderKeyInfo.add(encryptedKey);


            ed = cipher.doFinal(d, e);
            log.debug("Encrypted document");
            log.debug(toString(ed));

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            // encrypt
            cipher = XMLCipher.getInstance(XMLCipher.AES_192);
            cipher.init(XMLCipher.ENCRYPT_MODE, key);
      EncryptedData builder = cipher.getEncryptedData();


      KeyInfo builderKeyInfo = builder.getKeyInfo();
      if (builderKeyInfo == null) {
        builderKeyInfo = new KeyInfo(d);
        builder.setKeyInfo(builderKeyInfo);
      }


      builderKeyInfo.add(encryptedKey);


            ed = cipher.doFinal(d, e);


            //decrypt
      key = null;

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            X509Certificate cert = null;
            PublicKey publicKey = null;
            
            
            // See also WSS4J SAMLUtil.getCredentialFromKeyInfo 
            KeyInfo keyInfo = signature.getKeyInfo();
            
            if (keyInfo != null) {
                cert = keyInfo.getX509Certificate();
                if (cert != null) {
                    valid = signature.checkSignatureValue(cert);
                } else {
                    publicKey = keyInfo.getPublicKey();
                    if (publicKey != null) {
                        valid = signature.checkSignatureValue(publicKey);
                    }
                } 
            } else if (!keyInfoMustBeAvailable) {

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      Element e = XMLUtils.getDirectChild(this._constructionElement,
                                          Constants._TAG_KEYINFO,
                                          Constants.SignatureSpecNS);


      if (e != null) {
         return new KeyInfo(e, this._baseURI);
      } else {
         return null;
      }
   }

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            "00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f"));
      Key contentKey = em.createSecretKeyFromBytes(
         org.apache.xml.security.utils.HexDump.hexStringToByteArray(
            "00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f"));
      byte ciphertext[] = em.wrap(contentKey, wrapKey);
      KeyInfo ki = new KeyInfo(doc);


      ki.add(new org.apache.xml.security.keys.content.KeyName(doc,
              "Christian Geuer-Pollmann"));


      EncryptedKey ed = new EncryptedKey(doc, em, ki,
                                         new CipherData(doc, ciphertext), null,
                                         null, "Christian Geuer-Pollmann", "",

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      Element e = XMLUtils.getDirectChild(this._constructionElement,
                                          Constants._TAG_KEYINFO,
                                          Constants.SignatureSpecNS);


      if (e != null) {
         return new KeyInfo(e, this._baseURI);
      } else {
         return null;
      }
   }

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      }


      Key cek;


      {
         KeyInfo ki = new KeyInfo(doc);


         ki.add(new org.apache.xml.security.keys.content.KeyName(doc,
                 "Christian Geuer-Pollmann"));


         EncryptedData ed =
            new EncryptedData(doc,
                              EncryptionConstants.ALGO_ID_BLOCKCIPHER_AES128,

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        boolean valid = false;
        Reference ref = null;
        try {
            XMLSignature signature = new XMLSignature(signatureElement, "");    
            // See also WSS4J SAMLUtil.getCredentialFromKeyInfo 
            KeyInfo keyInfo = signature.getKeyInfo();
            
            X509Certificate cert = keyInfo.getX509Certificate();
            if (cert != null) {
                valid = signature.checkSignatureValue(cert);
            } else {
                PublicKey pk = keyInfo.getPublicKey();
                if (pk != null) {
                    valid = signature.checkSignatureValue(pk);
                }
            }
            // is this call redundant given that signature.checkSignatureValue uses References ?
            ref = getReference(signature);
            Element signedElement = validateReference(root, ref);
            
            // validate trust 
            new TrustValidator().validateTrust(crypto, cert, keyInfo.getPublicKey());
            
            if (persistSignature) {
                message.setContent(XMLSignature.class, signature);
                message.setContent(Element.class, signedElement);
            }

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      Element keyInfoElem =XMLUtils.selectDsNode(this._constructionElement.getFirstChild(),
                               Constants._TAG_KEYINFO,0);


      // If it exists use it, but it's not mandatory
      if (keyInfoElem != null) {
         this._keyInfo = new KeyInfo(keyInfoElem, BaseURI);
      }
   }

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