J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * reserved comment block |
| 3 | * DO NOT REMOVE OR ALTER! |
| 4 | */ |
| 5 | /* |
| 6 | * Copyright 1999-2004 The Apache Software Foundation. |
| 7 | * |
| 8 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 9 | * you may not use this file except in compliance with the License. |
| 10 | * You may obtain a copy of the License at |
| 11 | * |
| 12 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 13 | * |
| 14 | * Unless required by applicable law or agreed to in writing, software |
| 15 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 16 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 17 | * See the License for the specific language governing permissions and |
| 18 | * limitations under the License. |
| 19 | * |
| 20 | */ |
| 21 | package com.sun.org.apache.xml.internal.security.algorithms; |
| 22 | |
| 23 | |
| 24 | |
| 25 | import java.security.MessageDigest; |
| 26 | import java.security.NoSuchProviderException; |
| 27 | |
| 28 | import com.sun.org.apache.xml.internal.security.signature.XMLSignatureException; |
| 29 | import com.sun.org.apache.xml.internal.security.utils.Constants; |
| 30 | import com.sun.org.apache.xml.internal.security.utils.EncryptionConstants; |
| 31 | import org.w3c.dom.Document; |
| 32 | |
| 33 | |
| 34 | /** |
| 35 | * Digest Message wrapper & selector class. |
| 36 | * |
| 37 | * <pre> |
| 38 | * MessageDigestAlgorithm.getInstance() |
| 39 | * </pre> |
| 40 | * |
| 41 | */ |
| 42 | public class MessageDigestAlgorithm extends Algorithm { |
| 43 | |
| 44 | /** {@link java.util.logging} logging facility */ |
| 45 | static java.util.logging.Logger log = |
| 46 | java.util.logging.Logger.getLogger( |
| 47 | MessageDigestAlgorithm.class.getName()); |
| 48 | |
| 49 | /** Message Digest - NOT RECOMMENDED MD5*/ |
| 50 | public static final String ALGO_ID_DIGEST_NOT_RECOMMENDED_MD5 = Constants.MoreAlgorithmsSpecNS + "md5"; |
| 51 | /** Digest - Required SHA1*/ |
| 52 | public static final String ALGO_ID_DIGEST_SHA1 = Constants.SignatureSpecNS + "sha1"; |
| 53 | /** Message Digest - RECOMMENDED SHA256*/ |
| 54 | public static final String ALGO_ID_DIGEST_SHA256 = EncryptionConstants.EncryptionSpecNS + "sha256"; |
| 55 | /** Message Digest - OPTIONAL SHA384*/ |
| 56 | public static final String ALGO_ID_DIGEST_SHA384 = Constants.MoreAlgorithmsSpecNS + "sha384"; |
| 57 | /** Message Digest - OPTIONAL SHA512*/ |
| 58 | public static final String ALGO_ID_DIGEST_SHA512 = EncryptionConstants.EncryptionSpecNS + "sha512"; |
| 59 | /** Message Digest - OPTIONAL RIPEMD-160*/ |
| 60 | public static final String ALGO_ID_DIGEST_RIPEMD160 = EncryptionConstants.EncryptionSpecNS + "ripemd160"; |
| 61 | |
| 62 | /** Field algorithm stores the actual {@link java.security.MessageDigest} */ |
| 63 | java.security.MessageDigest algorithm = null; |
| 64 | |
| 65 | /** |
| 66 | * Constructor for the brave who pass their own message digest algorithms and the corresponding URI. |
| 67 | * @param doc |
| 68 | * @param messageDigest |
| 69 | * @param algorithmURI |
| 70 | */ |
| 71 | private MessageDigestAlgorithm(Document doc, MessageDigest messageDigest, |
| 72 | String algorithmURI) { |
| 73 | |
| 74 | super(doc, algorithmURI); |
| 75 | |
| 76 | this.algorithm = messageDigest; |
| 77 | } |
| 78 | |
| 79 | /** |
| 80 | * Factory method for constructing a message digest algorithm by name. |
| 81 | * |
| 82 | * @param doc |
| 83 | * @param algorithmURI |
| 84 | * @return The MessageDigestAlgorithm element to attach in document and to digest |
| 85 | * @throws XMLSignatureException |
| 86 | */ |
| 87 | public static MessageDigestAlgorithm getInstance( |
| 88 | Document doc, String algorithmURI) throws XMLSignatureException { |
| 89 | |
| 90 | String algorithmID = JCEMapper.translateURItoJCEID(algorithmURI); |
| 91 | |
| 92 | if (algorithmID == null) { |
| 93 | Object[] exArgs = { algorithmURI }; |
| 94 | throw new XMLSignatureException("algorithms.NoSuchMap", exArgs); |
| 95 | } |
| 96 | |
| 97 | MessageDigest md; |
| 98 | String provider=JCEMapper.getProviderId(); |
| 99 | try { |
| 100 | if (provider==null) { |
| 101 | md = MessageDigest.getInstance(algorithmID); |
| 102 | } else { |
| 103 | md = MessageDigest.getInstance(algorithmID,provider); |
| 104 | } |
| 105 | } catch (java.security.NoSuchAlgorithmException ex) { |
| 106 | Object[] exArgs = { algorithmID, |
| 107 | ex.getLocalizedMessage() }; |
| 108 | |
| 109 | throw new XMLSignatureException("algorithms.NoSuchAlgorithm", exArgs); |
| 110 | } catch (NoSuchProviderException ex) { |
| 111 | Object[] exArgs = { algorithmID, |
| 112 | ex.getLocalizedMessage() }; |
| 113 | |
| 114 | throw new XMLSignatureException("algorithms.NoSuchAlgorithm", exArgs); |
| 115 | } |
| 116 | return new MessageDigestAlgorithm(doc, md, algorithmURI); |
| 117 | } |
| 118 | |
| 119 | /** |
| 120 | * Returns the actual {@link java.security.MessageDigest} algorithm object |
| 121 | * |
| 122 | * @return the actual {@link java.security.MessageDigest} algorithm object |
| 123 | */ |
| 124 | public java.security.MessageDigest getAlgorithm() { |
| 125 | return this.algorithm; |
| 126 | } |
| 127 | |
| 128 | /** |
| 129 | * Proxy method for {@link java.security.MessageDigest#isEqual} |
| 130 | * which is executed on the internal {@link java.security.MessageDigest} object. |
| 131 | * |
| 132 | * @param digesta |
| 133 | * @param digestb |
| 134 | * @return the result of the {@link java.security.MessageDigest#isEqual} method |
| 135 | */ |
| 136 | public static boolean isEqual(byte[] digesta, byte[] digestb) { |
| 137 | return java.security.MessageDigest.isEqual(digesta, digestb); |
| 138 | } |
| 139 | |
| 140 | /** |
| 141 | * Proxy method for {@link java.security.MessageDigest#digest()} |
| 142 | * which is executed on the internal {@link java.security.MessageDigest} object. |
| 143 | * |
| 144 | * @return the result of the {@link java.security.MessageDigest#digest()} method |
| 145 | */ |
| 146 | public byte[] digest() { |
| 147 | return this.algorithm.digest(); |
| 148 | } |
| 149 | |
| 150 | /** |
| 151 | * Proxy method for {@link java.security.MessageDigest#digest(byte[])} |
| 152 | * which is executed on the internal {@link java.security.MessageDigest} object. |
| 153 | * |
| 154 | * @param input |
| 155 | * @return the result of the {@link java.security.MessageDigest#digest(byte[])} method |
| 156 | */ |
| 157 | public byte[] digest(byte input[]) { |
| 158 | return this.algorithm.digest(input); |
| 159 | } |
| 160 | |
| 161 | /** |
| 162 | * Proxy method for {@link java.security.MessageDigest#digest(byte[], int, int)} |
| 163 | * which is executed on the internal {@link java.security.MessageDigest} object. |
| 164 | * |
| 165 | * @param buf |
| 166 | * @param offset |
| 167 | * @param len |
| 168 | * @return the result of the {@link java.security.MessageDigest#digest(byte[], int, int)} method |
| 169 | * @throws java.security.DigestException |
| 170 | */ |
| 171 | public int digest(byte buf[], int offset, int len) |
| 172 | throws java.security.DigestException { |
| 173 | return this.algorithm.digest(buf, offset, len); |
| 174 | } |
| 175 | |
| 176 | /** |
| 177 | * Proxy method for {@link java.security.MessageDigest#getAlgorithm} |
| 178 | * which is executed on the internal {@link java.security.MessageDigest} object. |
| 179 | * |
| 180 | * @return the result of the {@link java.security.MessageDigest#getAlgorithm} method |
| 181 | */ |
| 182 | public String getJCEAlgorithmString() { |
| 183 | return this.algorithm.getAlgorithm(); |
| 184 | } |
| 185 | |
| 186 | /** |
| 187 | * Proxy method for {@link java.security.MessageDigest#getProvider} |
| 188 | * which is executed on the internal {@link java.security.MessageDigest} object. |
| 189 | * |
| 190 | * @return the result of the {@link java.security.MessageDigest#getProvider} method |
| 191 | */ |
| 192 | public java.security.Provider getJCEProvider() { |
| 193 | return this.algorithm.getProvider(); |
| 194 | } |
| 195 | |
| 196 | /** |
| 197 | * Proxy method for {@link java.security.MessageDigest#getDigestLength} |
| 198 | * which is executed on the internal {@link java.security.MessageDigest} object. |
| 199 | * |
| 200 | * @return the result of the {@link java.security.MessageDigest#getDigestLength} method |
| 201 | */ |
| 202 | public int getDigestLength() { |
| 203 | return this.algorithm.getDigestLength(); |
| 204 | } |
| 205 | |
| 206 | /** |
| 207 | * Proxy method for {@link java.security.MessageDigest#reset} |
| 208 | * which is executed on the internal {@link java.security.MessageDigest} object. |
| 209 | * |
| 210 | */ |
| 211 | public void reset() { |
| 212 | this.algorithm.reset(); |
| 213 | } |
| 214 | |
| 215 | /** |
| 216 | * Proxy method for {@link java.security.MessageDigest#update(byte[])} |
| 217 | * which is executed on the internal {@link java.security.MessageDigest} object. |
| 218 | * |
| 219 | * @param input |
| 220 | */ |
| 221 | public void update(byte[] input) { |
| 222 | this.algorithm.update(input); |
| 223 | } |
| 224 | |
| 225 | /** |
| 226 | * Proxy method for {@link java.security.MessageDigest#update(byte)} |
| 227 | * which is executed on the internal {@link java.security.MessageDigest} object. |
| 228 | * |
| 229 | * @param input |
| 230 | */ |
| 231 | public void update(byte input) { |
| 232 | this.algorithm.update(input); |
| 233 | } |
| 234 | |
| 235 | /** |
| 236 | * Proxy method for {@link java.security.MessageDigest#update(byte[], int, int)} |
| 237 | * which is executed on the internal {@link java.security.MessageDigest} object. |
| 238 | * |
| 239 | * @param buf |
| 240 | * @param offset |
| 241 | * @param len |
| 242 | */ |
| 243 | public void update(byte buf[], int offset, int len) { |
| 244 | this.algorithm.update(buf, offset, len); |
| 245 | } |
| 246 | |
| 247 | /** @inheritDoc */ |
| 248 | public String getBaseNamespace() { |
| 249 | return Constants.SignatureSpecNS; |
| 250 | } |
| 251 | |
| 252 | /** @inheritDoc */ |
| 253 | public String getBaseLocalName() { |
| 254 | return Constants._TAG_DIGESTMETHOD; |
| 255 | } |
| 256 | } |