/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.wss4j.stax.impl.processor.output;
import org.apache.commons.codec.binary.Base64;
import org.apache.wss4j.common.derivedKey.AlgoFactory;
import org.apache.wss4j.common.derivedKey.DerivationAlgorithm;
import org.apache.wss4j.common.ext.WSPasswordCallback;
import org.apache.wss4j.common.ext.WSSecurityException;
import org.apache.wss4j.stax.ext.WSSConstants;
import org.apache.wss4j.stax.ext.WSSSecurityProperties;
import org.apache.wss4j.stax.ext.WSSUtils;
import org.apache.wss4j.stax.securityToken.WSSecurityTokenConstants;
import org.apache.xml.security.exceptions.XMLSecurityException;
import org.apache.xml.security.stax.config.JCEAlgorithmMapper;
import org.apache.xml.security.stax.ext.*;
import org.apache.xml.security.stax.ext.stax.XMLSecAttribute;
import org.apache.xml.security.stax.ext.stax.XMLSecEvent;
import org.apache.xml.security.stax.impl.securityToken.GenericOutboundSecurityToken;
import org.apache.xml.security.stax.impl.util.IDGenerator;
import org.apache.xml.security.stax.securityToken.OutboundSecurityToken;
import org.apache.xml.security.stax.securityToken.SecurityToken;
import org.apache.xml.security.stax.securityToken.SecurityTokenProvider;
import javax.crypto.spec.SecretKeySpec;
import javax.xml.namespace.QName;
import javax.xml.stream.XMLStreamException;
import java.io.UnsupportedEncodingException;
import java.security.Key;
import java.security.cert.X509Certificate;
import java.util.ArrayList;
import java.util.List;
public class DerivedKeyTokenOutputProcessor extends AbstractOutputProcessor {
public DerivedKeyTokenOutputProcessor() throws XMLSecurityException {
super();
}
@Override
public void processEvent(XMLSecEvent xmlSecEvent, OutputProcessorChain outputProcessorChain) throws XMLStreamException, XMLSecurityException {
try {
String tokenId = outputProcessorChain.getSecurityContext().get(WSSConstants.PROP_USE_THIS_TOKEN_ID_FOR_DERIVED_KEY);
if (tokenId == null) {
throw new WSSecurityException(WSSecurityException.ErrorCode.FAILURE);
}
SecurityTokenProvider<OutboundSecurityToken> wrappingSecurityTokenProvider = outputProcessorChain.getSecurityContext().getSecurityTokenProvider(tokenId);
if (wrappingSecurityTokenProvider == null) {
throw new WSSecurityException(WSSecurityException.ErrorCode.FAILURE);
}
final OutboundSecurityToken wrappingSecurityToken = wrappingSecurityTokenProvider.getSecurityToken();
if (wrappingSecurityToken == null) {
throw new WSSecurityException(WSSecurityException.ErrorCode.FAILURE);
}
final String wsuIdDKT = IDGenerator.generateID(null);
int offset = 0;
int length = 0;
XMLSecurityConstants.Action action = getAction();
if (WSSConstants.SIGNATURE_WITH_DERIVED_KEY.equals(action)) {
if (((WSSSecurityProperties)getSecurityProperties()).getDerivedSignatureKeyLength() > 0) {
length = ((WSSSecurityProperties)getSecurityProperties()).getDerivedSignatureKeyLength();
} else {
length = JCEAlgorithmMapper.getKeyLengthFromURI(getSecurityProperties().getSignatureAlgorithm()) / 8;
}
} else if (WSSConstants.ENCRYPT_WITH_DERIVED_KEY.equals(action)) {
if (((WSSSecurityProperties)getSecurityProperties()).getDerivedEncryptionKeyLength() > 0) {
length = ((WSSSecurityProperties)getSecurityProperties()).getDerivedEncryptionKeyLength();
} else {
length = JCEAlgorithmMapper.getKeyLengthFromURI(getSecurityProperties().getEncryptionSymAlgorithm()) / 8;
}
}
byte[] label;
try {
String defaultLabel = WSSConstants.WS_SecureConversation_DEFAULT_LABEL + WSSConstants.WS_SecureConversation_DEFAULT_LABEL;
label = defaultLabel.getBytes("UTF-8");
} catch (UnsupportedEncodingException e) {
throw new WSSecurityException(WSSecurityException.ErrorCode.FAILURE, "empty", e, "UTF-8 encoding is not supported");
}
byte[] nonce = WSSConstants.generateBytes(16);
byte[] seed = new byte[label.length + nonce.length];
System.arraycopy(label, 0, seed, 0, label.length);
System.arraycopy(nonce, 0, seed, label.length, nonce.length);
DerivationAlgorithm derivationAlgorithm =
AlgoFactory.getInstance(WSSConstants.P_SHA_1);
byte[] secret;
if (WSSecurityTokenConstants.SecurityContextToken.equals(wrappingSecurityToken.getTokenType())) {
WSPasswordCallback passwordCallback = new WSPasswordCallback(wsuIdDKT, WSPasswordCallback.SECRET_KEY);
WSSUtils.doSecretKeyCallback(((WSSSecurityProperties)securityProperties).getCallbackHandler(), passwordCallback, wsuIdDKT);
if (passwordCallback.getKey() == null) {
throw new WSSecurityException(WSSecurityException.ErrorCode.FAILURE, "noKey", wsuIdDKT);
}
secret = passwordCallback.getKey();
} else {
secret = wrappingSecurityToken.getSecretKey("").getEncoded();
}
final byte[] derivedKeyBytes = derivationAlgorithm.createKey(secret, seed, offset, length);
final GenericOutboundSecurityToken derivedKeySecurityToken =
new GenericOutboundSecurityToken(wsuIdDKT, WSSecurityTokenConstants.DerivedKeyToken) {
@Override
public Key getSecretKey(String algorithmURI) throws WSSecurityException {
Key key = null;
try {
key = super.getSecretKey(algorithmURI);
} catch (XMLSecurityException e) {
throw new WSSecurityException(WSSecurityException.ErrorCode.FAILURE, e);
}
if (key != null) {
return key;
}
String algoFamily = JCEAlgorithmMapper.getJCEKeyAlgorithmFromURI(algorithmURI);
key = new SecretKeySpec(derivedKeyBytes, algoFamily);
setSecretKey(algorithmURI, key);
return key;
}
};
derivedKeySecurityToken.setKeyWrappingToken(wrappingSecurityToken);
wrappingSecurityToken.addWrappedToken(derivedKeySecurityToken);
SecurityTokenProvider<OutboundSecurityToken> derivedKeysecurityTokenProvider =
new SecurityTokenProvider<OutboundSecurityToken>() {
@Override
public OutboundSecurityToken getSecurityToken() throws WSSecurityException {
return derivedKeySecurityToken;
}
@Override
public String getId() {
return wsuIdDKT;
}
};
if (WSSConstants.SIGNATURE_WITH_DERIVED_KEY.equals(action)) {
outputProcessorChain.getSecurityContext().put(WSSConstants.PROP_USE_THIS_TOKEN_ID_FOR_SIGNATURE, wsuIdDKT);
} else if (WSSConstants.ENCRYPT_WITH_DERIVED_KEY.equals(action)) {
outputProcessorChain.getSecurityContext().put(WSSConstants.PROP_USE_THIS_TOKEN_ID_FOR_ENCRYPTION, wsuIdDKT);
}
outputProcessorChain.getSecurityContext().registerSecurityTokenProvider(wsuIdDKT, derivedKeysecurityTokenProvider);
FinalDerivedKeyTokenOutputProcessor finalDerivedKeyTokenOutputProcessor =
new FinalDerivedKeyTokenOutputProcessor(derivedKeySecurityToken, offset, length, new String(Base64.encodeBase64(nonce)),
((WSSSecurityProperties)getSecurityProperties()).isUse200512Namespace(),
wrappingSecurityToken.getSha1Identifier());
finalDerivedKeyTokenOutputProcessor.setXMLSecurityProperties(getSecurityProperties());
finalDerivedKeyTokenOutputProcessor.setAction(getAction());
if (wrappingSecurityToken.getProcessor() != null) {
finalDerivedKeyTokenOutputProcessor.addBeforeProcessor(wrappingSecurityToken.getProcessor());
} else {
finalDerivedKeyTokenOutputProcessor.addAfterProcessor(ReferenceListOutputProcessor.class.getName());
}
finalDerivedKeyTokenOutputProcessor.init(outputProcessorChain);
derivedKeySecurityToken.setProcessor(finalDerivedKeyTokenOutputProcessor);
} finally {
outputProcessorChain.removeProcessor(this);
}
outputProcessorChain.processEvent(xmlSecEvent);
}
class FinalDerivedKeyTokenOutputProcessor extends AbstractOutputProcessor {
private final OutboundSecurityToken securityToken;
private final int offset;
private final int length;
private final String nonce;
private final boolean use200512Namespace;
private final String sha1Identifier;
FinalDerivedKeyTokenOutputProcessor(OutboundSecurityToken securityToken, int offset,
int length, String nonce, boolean use200512Namespace,
String sha1Identifier) throws XMLSecurityException {
super();
this.securityToken = securityToken;
this.offset = offset;
this.length = length;
this.nonce = nonce;
this.use200512Namespace = use200512Namespace;
this.sha1Identifier = sha1Identifier;
}
@Override
public void processEvent(XMLSecEvent xmlSecEvent, OutputProcessorChain outputProcessorChain)
throws XMLStreamException, XMLSecurityException {
outputProcessorChain.processEvent(xmlSecEvent);
if (WSSUtils.isSecurityHeaderElement(xmlSecEvent, ((WSSSecurityProperties) getSecurityProperties()).getActor())) {
final QName headerElementName = getHeaderElementName();
WSSUtils.updateSecurityHeaderOrder(outputProcessorChain, headerElementName, getAction(), false);
OutputProcessorChain subOutputProcessorChain = outputProcessorChain.createSubChain(this);
List<XMLSecAttribute> attributes = new ArrayList<XMLSecAttribute>(1);
attributes.add(createAttribute(WSSConstants.ATT_wsu_Id, securityToken.getId()));
createStartElementAndOutputAsEvent(subOutputProcessorChain, headerElementName, true, attributes);
createSecurityTokenReferenceStructureForDerivedKey(subOutputProcessorChain, securityToken,
((WSSSecurityProperties) getSecurityProperties()).getDerivedKeyKeyIdentifier(),
((WSSSecurityProperties) getSecurityProperties()).getDerivedKeyTokenReference(),
getSecurityProperties().isUseSingleCert());
createStartElementAndOutputAsEvent(subOutputProcessorChain, getOffsetName(), false, null);
createCharactersAndOutputAsEvent(subOutputProcessorChain, "" + offset);
createEndElementAndOutputAsEvent(subOutputProcessorChain, getOffsetName());
createStartElementAndOutputAsEvent(subOutputProcessorChain, getLengthName(), false, null);
createCharactersAndOutputAsEvent(subOutputProcessorChain, "" + length);
createEndElementAndOutputAsEvent(subOutputProcessorChain, getLengthName());
createStartElementAndOutputAsEvent(subOutputProcessorChain, getNonceName(), false, null);
createCharactersAndOutputAsEvent(subOutputProcessorChain, nonce);
createEndElementAndOutputAsEvent(subOutputProcessorChain, getNonceName());
createEndElementAndOutputAsEvent(subOutputProcessorChain, headerElementName);
outputProcessorChain.removeProcessor(this);
}
}
protected void createSecurityTokenReferenceStructureForDerivedKey(
OutputProcessorChain outputProcessorChain,
OutboundSecurityToken securityToken,
WSSecurityTokenConstants.KeyIdentifier keyIdentifier,
WSSConstants.DerivedKeyTokenReference derivedKeyTokenReference,
boolean useSingleCertificate)
throws XMLStreamException, XMLSecurityException {
SecurityToken wrappingToken = securityToken.getKeyWrappingToken();
List<XMLSecAttribute> attributes = new ArrayList<XMLSecAttribute>(2);
attributes.add(createAttribute(WSSConstants.ATT_wsu_Id, IDGenerator.generateID(null)));
if (WSSecurityTokenConstants.KeyIdentifier_SecurityTokenDirectReference.equals(keyIdentifier) && !useSingleCertificate) {
attributes.add(createAttribute(WSSConstants.ATT_wsse11_TokenType, WSSConstants.NS_X509PKIPathv1));
} else if (derivedKeyTokenReference == WSSConstants.DerivedKeyTokenReference.EncryptedKey
|| WSSecurityTokenConstants.KeyIdentifier_EncryptedKeySha1Identifier.equals(keyIdentifier)) {
attributes.add(createAttribute(WSSConstants.ATT_wsse11_TokenType, WSSConstants.NS_WSS_ENC_KEY_VALUE_TYPE));
} else if (WSSecurityTokenConstants.KerberosToken.equals(wrappingToken.getTokenType())) {
attributes.add(createAttribute(WSSConstants.ATT_wsse11_TokenType, WSSConstants.NS_GSS_Kerberos5_AP_REQ));
}
createStartElementAndOutputAsEvent(outputProcessorChain, WSSConstants.TAG_wsse_SecurityTokenReference, false, attributes);
X509Certificate[] x509Certificates = wrappingToken.getX509Certificates();
String tokenId = wrappingToken.getId();
if (derivedKeyTokenReference == WSSConstants.DerivedKeyTokenReference.EncryptedKey) {
String valueType = WSSConstants.NS_WSS_ENC_KEY_VALUE_TYPE;
WSSUtils.createBSTReferenceStructure(this, outputProcessorChain, tokenId, valueType, true);
} else if (WSSecurityTokenConstants.KeyIdentifier_IssuerSerial.equals(keyIdentifier)) {
WSSUtils.createX509IssuerSerialStructure(this, outputProcessorChain, x509Certificates);
} else if (WSSecurityTokenConstants.KeyIdentifier_SkiKeyIdentifier.equals(keyIdentifier)) {
WSSUtils.createX509SubjectKeyIdentifierStructure(this, outputProcessorChain, x509Certificates);
} else if (WSSecurityTokenConstants.KeyIdentifier_X509KeyIdentifier.equals(keyIdentifier)) {
WSSUtils.createX509KeyIdentifierStructure(this, outputProcessorChain, x509Certificates);
} else if (WSSecurityTokenConstants.KeyIdentifier_KerberosSha1Identifier.equals(keyIdentifier)) {
String identifier = wrappingToken.getSha1Identifier();
WSSUtils.createKerberosSha1IdentifierStructure(this, outputProcessorChain, identifier);
} else if (WSSecurityTokenConstants.KeyIdentifier_ThumbprintIdentifier.equals(keyIdentifier)) {
WSSUtils.createThumbprintKeyIdentifierStructure(this, outputProcessorChain, x509Certificates);
} else if (WSSecurityTokenConstants.KeyIdentifier_SecurityTokenDirectReference.equals(keyIdentifier)) {
String valueType;
if (WSSecurityTokenConstants.KerberosToken.equals(wrappingToken.getTokenType())) {
valueType = WSSConstants.NS_GSS_Kerberos5_AP_REQ;
} else if (WSSecurityTokenConstants.SpnegoContextToken.equals(wrappingToken.getTokenType())
|| WSSecurityTokenConstants.SecurityContextToken.equals(wrappingToken.getTokenType())
|| WSSecurityTokenConstants.SecureConversationToken.equals(wrappingToken.getTokenType())) {
boolean use200512Namespace = ((WSSSecurityProperties)getSecurityProperties()).isUse200512Namespace();
if (use200512Namespace) {
valueType = WSSConstants.NS_WSC_05_12 + "/sct";
} else {
valueType = WSSConstants.NS_WSC_05_02 + "/sct";
}
} else if (useSingleCertificate) {
valueType = WSSConstants.NS_X509_V3_TYPE;
} else {
valueType = WSSConstants.NS_X509PKIPathv1;
}
boolean included = ((WSSSecurityProperties)getSecurityProperties()).isIncludeSignatureToken();
WSSUtils.createBSTReferenceStructure(this, outputProcessorChain, tokenId, valueType, included);
} else if (WSSecurityTokenConstants.KeyIdentifier_EncryptedKeySha1Identifier.equals(keyIdentifier)) {
WSSUtils.createEncryptedKeySha1IdentifierStructure(this, outputProcessorChain, sha1Identifier);
} else {
throw new WSSecurityException(WSSecurityException.ErrorCode.FAILURE, "unsupportedSecurityToken");
}
createEndElementAndOutputAsEvent(outputProcessorChain, WSSConstants.TAG_wsse_SecurityTokenReference);
}
private QName getHeaderElementName() {
if (use200512Namespace) {
return WSSConstants.TAG_wsc0512_DerivedKeyToken;
}
return WSSConstants.TAG_wsc0502_DerivedKeyToken;
}
private QName getOffsetName() {
if (use200512Namespace) {
return WSSConstants.TAG_wsc0512_Offset;
}
return WSSConstants.TAG_wsc0502_Offset;
}
private QName getLengthName() {
if (use200512Namespace) {
return WSSConstants.TAG_wsc0512_Length;
}
return WSSConstants.TAG_wsc0502_Length;
}
private QName getNonceName() {
if (use200512Namespace) {
return WSSConstants.TAG_wsc0512_Nonce;
}
return WSSConstants.TAG_wsc0502_Nonce;
}
}
}