/*
* Copyright 1999-2004 The Apache Software Foundation.
*
* Licensed 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 com.sun.org.apache.xml.internal.security.algorithms.implementations;
import java.security.InvalidAlgorithmParameterException;
import java.security.InvalidKeyException;
import java.security.Key;
import java.security.SecureRandom;
import java.security.spec.AlgorithmParameterSpec;
import javax.crypto.Mac;
import javax.crypto.SecretKey;
import com.sun.org.apache.xml.internal.security.algorithms.JCEMapper;
import com.sun.org.apache.xml.internal.security.algorithms.MessageDigestAlgorithm;
import com.sun.org.apache.xml.internal.security.algorithms.SignatureAlgorithmSpi;
import com.sun.org.apache.xml.internal.security.signature.XMLSignature;
import com.sun.org.apache.xml.internal.security.signature.XMLSignatureException;
import com.sun.org.apache.xml.internal.security.utils.Constants;
import com.sun.org.apache.xml.internal.security.utils.XMLUtils;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Text;
/**
*
* @author $Author: raul $
*/
public abstract class IntegrityHmac extends SignatureAlgorithmSpi {
/** {@link java.util.logging} logging facility */
static java.util.logging.Logger log =
java.util.logging.Logger.getLogger(IntegrityHmacSHA1.class.getName());
/**
* Method engineGetURI
*
*@inheritDoc
*/
public abstract String engineGetURI();
/** Field _macAlgorithm */
private Mac _macAlgorithm = null;
/** Field _HMACOutputLength */
int _HMACOutputLength = 0;
/**
* Method IntegrityHmacSHA1das
*
* @throws XMLSignatureException
*/
public IntegrityHmac() throws XMLSignatureException {
String algorithmID = JCEMapper.translateURItoJCEID(this.engineGetURI());
if (true)
if (log.isLoggable(java.util.logging.Level.FINE)) log.log(java.util.logging.Level.FINE, "Created IntegrityHmacSHA1 using " + algorithmID);
try {
this._macAlgorithm = Mac.getInstance(algorithmID);
} catch (java.security.NoSuchAlgorithmException ex) {
Object[] exArgs = { algorithmID,
ex.getLocalizedMessage() };
throw new XMLSignatureException("algorithms.NoSuchAlgorithm", exArgs);
}
}
/**
* Proxy method for {@link java.security.Signature#setParameter(java.security.spec.AlgorithmParameterSpec)}
* which is executed on the internal {@link java.security.Signature} object.
*
* @param params
* @throws XMLSignatureException
*/
protected void engineSetParameter(AlgorithmParameterSpec params)
throws XMLSignatureException {
throw new XMLSignatureException("empty");
}
/**
* Proxy method for {@link java.security.Signature#verify(byte[])}
* which is executed on the internal {@link java.security.Signature} object.
*
* @param signature
* @return true if the signature is correct
* @throws XMLSignatureException
*/
protected boolean engineVerify(byte[] signature)
throws XMLSignatureException {
try {
byte[] completeResult = this._macAlgorithm.doFinal();
if ((this._HMACOutputLength == 0) || (this._HMACOutputLength >= 160)) {
return MessageDigestAlgorithm.isEqual(completeResult, signature);
}
byte[] stripped = IntegrityHmac.reduceBitLength(completeResult,
this._HMACOutputLength);
return MessageDigestAlgorithm.isEqual(stripped, signature);
} catch (IllegalStateException ex) {
throw new XMLSignatureException("empty", ex);
}
}
/**
* Proxy method for {@link java.security.Signature#initVerify(java.security.PublicKey)}
* which is executed on the internal {@link java.security.Signature} object.
*
* @param secretKey
* @throws XMLSignatureException
*/
protected void engineInitVerify(Key secretKey) throws XMLSignatureException {
if (!(secretKey instanceof SecretKey)) {
String supplied = secretKey.getClass().getName();
String needed = SecretKey.class.getName();
Object exArgs[] = { supplied, needed };
throw new XMLSignatureException("algorithms.WrongKeyForThisOperation",
exArgs);
}
try {
this._macAlgorithm.init(secretKey);
} catch (InvalidKeyException ex) {
throw new XMLSignatureException("empty", ex);
}
}
/**
* Proxy method for {@link java.security.Signature#sign()}
* which is executed on the internal {@link java.security.Signature} object.
*
* @return the result of the {@link java.security.Signature#sign()} method
* @throws XMLSignatureException
*/
protected byte[] engineSign() throws XMLSignatureException {
try {
byte[] completeResult = this._macAlgorithm.doFinal();
if ((this._HMACOutputLength == 0) || (this._HMACOutputLength >= 160)) {
return completeResult;
}
return IntegrityHmac.reduceBitLength(completeResult,
this._HMACOutputLength);
} catch (IllegalStateException ex) {
throw new XMLSignatureException("empty", ex);
}
}
/**
* Method reduceBitLength
*
* @param completeResult
* @return the reduced bits.
* @param length
*
*/
private static byte[] reduceBitLength(byte completeResult[], int length) {
int bytes = length / 8;
int abits = length % 8;
byte[] strippedResult = new byte[bytes + ((abits == 0)
? 0
: 1)];
System.arraycopy(completeResult, 0, strippedResult, 0, bytes);
if (abits > 0) {
byte[] MASK = { (byte) 0x00, (byte) 0x80, (byte) 0xC0, (byte) 0xE0,
(byte) 0xF0, (byte) 0xF8, (byte) 0xFC, (byte) 0xFE };
strippedResult[bytes] = (byte) (completeResult[bytes] & MASK[abits]);
}
return strippedResult;
}
/**
* Method engineInitSign
*
* @param secretKey
* @throws XMLSignatureException
*/
protected void engineInitSign(Key secretKey) throws XMLSignatureException {
if (!(secretKey instanceof SecretKey)) {
String supplied = secretKey.getClass().getName();
String needed = SecretKey.class.getName();
Object exArgs[] = { supplied, needed };
throw new XMLSignatureException("algorithms.WrongKeyForThisOperation",
exArgs);
}
try {
this._macAlgorithm.init(secretKey);
} catch (InvalidKeyException ex) {
throw new XMLSignatureException("empty", ex);
}
}
/**
* Method engineInitSign
*
* @param secretKey
* @param algorithmParameterSpec
* @throws XMLSignatureException
*/
protected void engineInitSign(
Key secretKey, AlgorithmParameterSpec algorithmParameterSpec)
throws XMLSignatureException {
if (!(secretKey instanceof SecretKey)) {
String supplied = secretKey.getClass().getName();
String needed = SecretKey.class.getName();
Object exArgs[] = { supplied, needed };
throw new XMLSignatureException("algorithms.WrongKeyForThisOperation",
exArgs);
}
try {
this._macAlgorithm.init(secretKey, algorithmParameterSpec);
} catch (InvalidKeyException ex) {
throw new XMLSignatureException("empty", ex);
} catch (InvalidAlgorithmParameterException ex) {
throw new XMLSignatureException("empty", ex);
}
}
/**
* Method engineInitSign
*
* @param secretKey
* @param secureRandom
* @throws XMLSignatureException
*/
protected void engineInitSign(Key secretKey, SecureRandom secureRandom)
throws XMLSignatureException {
throw new XMLSignatureException("algorithms.CannotUseSecureRandomOnMAC");
}
/**
* Proxy method for {@link java.security.Signature#update(byte[])}
* which is executed on the internal {@link java.security.Signature} object.
*
* @param input
* @throws XMLSignatureException
*/
protected void engineUpdate(byte[] input) throws XMLSignatureException {
try {
this._macAlgorithm.update(input);
} catch (IllegalStateException ex) {
throw new XMLSignatureException("empty", ex);
}
}
/**
* Proxy method for {@link java.security.Signature#update(byte)}
* which is executed on the internal {@link java.security.Signature} object.
*
* @param input
* @throws XMLSignatureException
*/
protected void engineUpdate(byte input) throws XMLSignatureException {
try {
this._macAlgorithm.update(input);
} catch (IllegalStateException ex) {
throw new XMLSignatureException("empty", ex);
}
}
/**
* Proxy method for {@link java.security.Signature#update(byte[], int, int)}
* which is executed on the internal {@link java.security.Signature} object.
*
* @param buf
* @param offset
* @param len
* @throws XMLSignatureException
*/
protected void engineUpdate(byte buf[], int offset, int len)
throws XMLSignatureException {
try {
this._macAlgorithm.update(buf, offset, len);
} catch (IllegalStateException ex) {
throw new XMLSignatureException("empty", ex);
}
}
/**
* Method engineGetJCEAlgorithmString
* @inheritDoc
*
*/
protected String engineGetJCEAlgorithmString() {
if (log.isLoggable(java.util.logging.Level.FINE)) log.log(java.util.logging.Level.FINE, "engineGetJCEAlgorithmString()");
return this._macAlgorithm.getAlgorithm();
}
/**
* Method engineGetJCEAlgorithmString
*
* @inheritDoc
*/
protected String engineGetJCEProviderName() {
return this._macAlgorithm.getProvider().getName();
}
/**
* Method engineSetHMACOutputLength
*
* @param HMACOutputLength
*/
protected void engineSetHMACOutputLength(int HMACOutputLength) {
this._HMACOutputLength = HMACOutputLength;
}
/**
* Method engineGetContextFromElement
*
* @param element
*/
protected void engineGetContextFromElement(Element element) {
super.engineGetContextFromElement(element);
if (element == null) {
throw new IllegalArgumentException("element null");
}
Text hmaclength =XMLUtils.selectDsNodeText(element.getFirstChild(),
Constants._TAG_HMACOUTPUTLENGTH,0);
if (hmaclength != null) {
this._HMACOutputLength = Integer.parseInt(hmaclength.getData());
}
}
/**
* Method engineAddContextToElement
*
* @param element
*/
public void engineAddContextToElement(Element element)
{
if (element == null) {
throw new IllegalArgumentException("null element");
}
if (this._HMACOutputLength != 0) {
Document doc = element.getOwnerDocument();
Element HMElem = XMLUtils.createElementInSignatureSpace(doc,
Constants._TAG_HMACOUTPUTLENGTH);
Text HMText =
doc.createTextNode(new Integer(this._HMACOutputLength).toString());
HMElem.appendChild(HMText);
XMLUtils.addReturnToElement(element);
element.appendChild(HMElem);
XMLUtils.addReturnToElement(element);
}
}
/**
* Class IntegrityHmacSHA1
*
* @author $Author: raul $
* @version $Revision: 1.13 $
*/
public static class IntegrityHmacSHA1 extends IntegrityHmac {
/**
* Constructor IntegrityHmacSHA1
*
* @throws XMLSignatureException
*/
public IntegrityHmacSHA1() throws XMLSignatureException {
super();
}
/**
* Method engineGetURI
* @inheritDoc
*
*/
public String engineGetURI() {
return XMLSignature.ALGO_ID_MAC_HMAC_SHA1;
}
}
/**
* Class IntegrityHmacSHA256
*
* @author $Author: raul $
* @version $Revision: 1.13 $
*/
public static class IntegrityHmacSHA256 extends IntegrityHmac {
/**
* Constructor IntegrityHmacSHA256
*
* @throws XMLSignatureException
*/
public IntegrityHmacSHA256() throws XMLSignatureException {
super();
}
/**
* Method engineGetURI
*
* @inheritDoc
*/
public String engineGetURI() {
return XMLSignature.ALGO_ID_MAC_HMAC_SHA256;
}
}
/**
* Class IntegrityHmacSHA384
*
* @author $Author: raul $
* @version $Revision: 1.13 $
*/
public static class IntegrityHmacSHA384 extends IntegrityHmac {
/**
* Constructor IntegrityHmacSHA384
*
* @throws XMLSignatureException
*/
public IntegrityHmacSHA384() throws XMLSignatureException {
super();
}
/**
* Method engineGetURI
* @inheritDoc
*
*/
public String engineGetURI() {
return XMLSignature.ALGO_ID_MAC_HMAC_SHA384;
}
}
/**
* Class IntegrityHmacSHA512
*
* @author $Author: raul $
* @version $Revision: 1.13 $
*/
public static class IntegrityHmacSHA512 extends IntegrityHmac {
/**
* Constructor IntegrityHmacSHA512
*
* @throws XMLSignatureException
*/
public IntegrityHmacSHA512() throws XMLSignatureException {
super();
}
/**
* Method engineGetURI
* @inheritDoc
*
*/
public String engineGetURI() {
return XMLSignature.ALGO_ID_MAC_HMAC_SHA512;
}
}
/**
* Class IntegrityHmacRIPEMD160
*
* @author $Author: raul $
* @version $Revision: 1.13 $
*/
public static class IntegrityHmacRIPEMD160 extends IntegrityHmac {
/**
* Constructor IntegrityHmacRIPEMD160
*
* @throws XMLSignatureException
*/
public IntegrityHmacRIPEMD160() throws XMLSignatureException {
super();
}
/**
* Method engineGetURI
*
* @inheritDoc
*/
public String engineGetURI() {
return XMLSignature.ALGO_ID_MAC_HMAC_RIPEMD160;
}
}
/**
* Class IntegrityHmacMD5
*
* @author $Author: raul $
* @version $Revision: 1.13 $
*/
public static class IntegrityHmacMD5 extends IntegrityHmac {
/**
* Constructor IntegrityHmacMD5
*
* @throws XMLSignatureException
*/
public IntegrityHmacMD5() throws XMLSignatureException {
super();
}
/**
* Method engineGetURI
*
* @inheritDoc
*/
public String engineGetURI() {
return XMLSignature.ALGO_ID_MAC_HMAC_NOT_RECOMMENDED_MD5;
}
}
}
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