| /* |
| * reserved comment block |
| * DO NOT REMOVE OR ALTER! |
| */ |
| /* |
| * 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; |
| |
| import java.security.MessageDigest; |
| import java.security.NoSuchProviderException; |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| 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.EncryptionConstants; |
| import org.w3c.dom.Document; |
| |
| |
| /** |
| * Digest Message wrapper & selector class. |
| * |
| * <pre> |
| * MessageDigestAlgorithm.getInstance() |
| * </pre> |
| * |
| */ |
| public class MessageDigestAlgorithm extends Algorithm { |
| |
| /** Message Digest - NOT RECOMMENDED MD5*/ |
| public static final String ALGO_ID_DIGEST_NOT_RECOMMENDED_MD5 = Constants.MoreAlgorithmsSpecNS + "md5"; |
| /** Digest - Required SHA1*/ |
| public static final String ALGO_ID_DIGEST_SHA1 = Constants.SignatureSpecNS + "sha1"; |
| /** Message Digest - RECOMMENDED SHA256*/ |
| public static final String ALGO_ID_DIGEST_SHA256 = EncryptionConstants.EncryptionSpecNS + "sha256"; |
| /** Message Digest - OPTIONAL SHA384*/ |
| public static final String ALGO_ID_DIGEST_SHA384 = Constants.MoreAlgorithmsSpecNS + "sha384"; |
| /** Message Digest - OPTIONAL SHA512*/ |
| public static final String ALGO_ID_DIGEST_SHA512 = EncryptionConstants.EncryptionSpecNS + "sha512"; |
| /** Message Digest - OPTIONAL RIPEMD-160*/ |
| public static final String ALGO_ID_DIGEST_RIPEMD160 = EncryptionConstants.EncryptionSpecNS + "ripemd160"; |
| |
| /** Field algorithm stores the actual {@link java.security.MessageDigest} */ |
| java.security.MessageDigest algorithm = null; |
| |
| /** |
| * Constructor for the brave who pass their own message digest algorithms and the corresponding URI. |
| * @param doc |
| * @param messageDigest |
| * @param algorithmURI |
| */ |
| private MessageDigestAlgorithm(Document doc, MessageDigest messageDigest, |
| String algorithmURI) { |
| |
| super(doc, algorithmURI); |
| |
| this.algorithm = messageDigest; |
| } |
| |
| static ThreadLocal instances=new ThreadLocal() { |
| protected Object initialValue() { |
| return new HashMap(); |
| }; |
| }; |
| |
| /** |
| * Factory method for constructing a message digest algorithm by name. |
| * |
| * @param doc |
| * @param algorithmURI |
| * @return The MessageDigestAlgorithm element to attach in document and to digest |
| * @throws XMLSignatureException |
| */ |
| public static MessageDigestAlgorithm getInstance( |
| Document doc, String algorithmURI) throws XMLSignatureException { |
| MessageDigest md = getDigestInstance(algorithmURI); |
| return new MessageDigestAlgorithm(doc, md, algorithmURI); |
| } |
| |
| private static MessageDigest getDigestInstance(String algorithmURI) throws XMLSignatureException { |
| MessageDigest result=(MessageDigest) ((Map)instances.get()).get(algorithmURI); |
| if (result!=null) |
| return result; |
| String algorithmID = JCEMapper.translateURItoJCEID(algorithmURI); |
| |
| if (algorithmID == null) { |
| Object[] exArgs = { algorithmURI }; |
| throw new XMLSignatureException("algorithms.NoSuchMap", exArgs); |
| } |
| |
| MessageDigest md; |
| String provider=JCEMapper.getProviderId(); |
| try { |
| if (provider==null) { |
| md = MessageDigest.getInstance(algorithmID); |
| } else { |
| md = MessageDigest.getInstance(algorithmID,provider); |
| } |
| } catch (java.security.NoSuchAlgorithmException ex) { |
| Object[] exArgs = { algorithmID, |
| ex.getLocalizedMessage() }; |
| |
| throw new XMLSignatureException("algorithms.NoSuchAlgorithm", exArgs); |
| } catch (NoSuchProviderException ex) { |
| Object[] exArgs = { algorithmID, |
| ex.getLocalizedMessage() }; |
| |
| throw new XMLSignatureException("algorithms.NoSuchAlgorithm", exArgs); |
| } |
| ((Map)instances.get()).put(algorithmURI, md); |
| return md; |
| } |
| |
| /** |
| * Returns the actual {@link java.security.MessageDigest} algorithm object |
| * |
| * @return the actual {@link java.security.MessageDigest} algorithm object |
| */ |
| public java.security.MessageDigest getAlgorithm() { |
| return this.algorithm; |
| } |
| |
| /** |
| * Proxy method for {@link java.security.MessageDigest#isEqual} |
| * which is executed on the internal {@link java.security.MessageDigest} object. |
| * |
| * @param digesta |
| * @param digestb |
| * @return the result of the {@link java.security.MessageDigest#isEqual} method |
| */ |
| public static boolean isEqual(byte[] digesta, byte[] digestb) { |
| return java.security.MessageDigest.isEqual(digesta, digestb); |
| } |
| |
| /** |
| * Proxy method for {@link java.security.MessageDigest#digest()} |
| * which is executed on the internal {@link java.security.MessageDigest} object. |
| * |
| * @return the result of the {@link java.security.MessageDigest#digest()} method |
| */ |
| public byte[] digest() { |
| return this.algorithm.digest(); |
| } |
| |
| /** |
| * Proxy method for {@link java.security.MessageDigest#digest(byte[])} |
| * which is executed on the internal {@link java.security.MessageDigest} object. |
| * |
| * @param input |
| * @return the result of the {@link java.security.MessageDigest#digest(byte[])} method |
| */ |
| public byte[] digest(byte input[]) { |
| return this.algorithm.digest(input); |
| } |
| |
| /** |
| * Proxy method for {@link java.security.MessageDigest#digest(byte[], int, int)} |
| * which is executed on the internal {@link java.security.MessageDigest} object. |
| * |
| * @param buf |
| * @param offset |
| * @param len |
| * @return the result of the {@link java.security.MessageDigest#digest(byte[], int, int)} method |
| * @throws java.security.DigestException |
| */ |
| public int digest(byte buf[], int offset, int len) |
| throws java.security.DigestException { |
| return this.algorithm.digest(buf, offset, len); |
| } |
| |
| /** |
| * Proxy method for {@link java.security.MessageDigest#getAlgorithm} |
| * which is executed on the internal {@link java.security.MessageDigest} object. |
| * |
| * @return the result of the {@link java.security.MessageDigest#getAlgorithm} method |
| */ |
| public String getJCEAlgorithmString() { |
| return this.algorithm.getAlgorithm(); |
| } |
| |
| /** |
| * Proxy method for {@link java.security.MessageDigest#getProvider} |
| * which is executed on the internal {@link java.security.MessageDigest} object. |
| * |
| * @return the result of the {@link java.security.MessageDigest#getProvider} method |
| */ |
| public java.security.Provider getJCEProvider() { |
| return this.algorithm.getProvider(); |
| } |
| |
| /** |
| * Proxy method for {@link java.security.MessageDigest#getDigestLength} |
| * which is executed on the internal {@link java.security.MessageDigest} object. |
| * |
| * @return the result of the {@link java.security.MessageDigest#getDigestLength} method |
| */ |
| public int getDigestLength() { |
| return this.algorithm.getDigestLength(); |
| } |
| |
| /** |
| * Proxy method for {@link java.security.MessageDigest#reset} |
| * which is executed on the internal {@link java.security.MessageDigest} object. |
| * |
| */ |
| public void reset() { |
| this.algorithm.reset(); |
| } |
| |
| /** |
| * Proxy method for {@link java.security.MessageDigest#update(byte[])} |
| * which is executed on the internal {@link java.security.MessageDigest} object. |
| * |
| * @param input |
| */ |
| public void update(byte[] input) { |
| this.algorithm.update(input); |
| } |
| |
| /** |
| * Proxy method for {@link java.security.MessageDigest#update(byte)} |
| * which is executed on the internal {@link java.security.MessageDigest} object. |
| * |
| * @param input |
| */ |
| public void update(byte input) { |
| this.algorithm.update(input); |
| } |
| |
| /** |
| * Proxy method for {@link java.security.MessageDigest#update(byte[], int, int)} |
| * which is executed on the internal {@link java.security.MessageDigest} object. |
| * |
| * @param buf |
| * @param offset |
| * @param len |
| */ |
| public void update(byte buf[], int offset, int len) { |
| this.algorithm.update(buf, offset, len); |
| } |
| |
| /** @inheritDoc */ |
| public String getBaseNamespace() { |
| return Constants.SignatureSpecNS; |
| } |
| |
| /** @inheritDoc */ |
| public String getBaseLocalName() { |
| return Constants._TAG_DIGESTMETHOD; |
| } |
| } |