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| 1 | /* | ||
| 2 | * Copyright (c) 1997, 2009, Oracle and/or its affiliates. All rights reserved. | ||
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | ||
| 4 | * | ||
| 5 | * This code is free software; you can redistribute it and/or modify it | ||
| 6 | * under the terms of the GNU General Public License version 2 only, as | ||
| 7 | * published by the Free Software Foundation. Oracle designates this | ||
| 8 | * particular file as subject to the "Classpath" exception as provided | ||
| 9 | * by Oracle in the LICENSE file that accompanied this code. | ||
| 10 | * | ||
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT | ||
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | ||
| 14 | * version 2 for more details (a copy is included in the LICENSE file that | ||
| 15 | * accompanied this code). | ||
| 16 | * | ||
| 17 | * You should have received a copy of the GNU General Public License version | ||
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, | ||
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | ||
| 20 | * | ||
| 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | ||
| 22 | * or visit www.oracle.com if you need additional information or have any | ||
| 23 | * questions. | ||
| 24 | */ | ||
| 25 | |||
| 26 | package com.sun.crypto.provider; | ||
| 27 | |||
| 28 | import java.io.UnsupportedEncodingException; | ||
| 29 | import java.security.InvalidKeyException; | ||
| 30 | import java.security.spec.KeySpec; | ||
| 31 | import java.security.spec.InvalidKeySpecException; | ||
| 32 | import javax.crypto.SecretKey; | ||
| 33 | import javax.crypto.SecretKeyFactorySpi; | ||
| 34 | import javax.crypto.spec.PBEKeySpec; | ||
| 35 | import java.util.HashSet; | ||
| 36 | |||
| 37 | /** | ||
| 38 | * This class implements a key factory for PBE keys according to PKCS#5, | ||
| 39 | * meaning that the password must consist of printable ASCII characters | ||
| 40 | * (values 32 to 126 decimal inclusive) and only the low order 8 bits | ||
| 41 | * of each password character are used. | ||
| 42 | * | ||
| 43 | * @author Jan Luehe | ||
| 44 | * | ||
| 45 | */ | ||
| 46 | abstract class PBEKeyFactory extends SecretKeyFactorySpi { | ||
| 47 | |||
| 48 | private String type; | ||
| 49 | private static HashSet<String> validTypes; | ||
| 50 | |||
| 51 | /** | ||
| 52 | * Simple constructor | ||
| 53 | */ | ||
| 54 | private PBEKeyFactory(String keytype) { | ||
| 55 | type = keytype; | ||
| 56 | } | ||
| 57 | |||
| 58 | static { | ||
| 59 | validTypes = new HashSet<String>(4); | ||
| 60 | validTypes.add("PBEWithMD5AndDES".toUpperCase()); | ||
| 61 | validTypes.add("PBEWithSHA1AndDESede".toUpperCase()); | ||
| 62 | validTypes.add("PBEWithSHA1AndRC2_40".toUpperCase()); | ||
| 63 | // Proprietary algorithm. | ||
| 64 | validTypes.add("PBEWithMD5AndTripleDES".toUpperCase()); | ||
| 65 | } | ||
| 66 | |||
| 67 | public static final class PBEWithMD5AndDES | ||
| 68 | extends PBEKeyFactory { | ||
| 69 | public PBEWithMD5AndDES() { | ||
| 70 | super("PBEWithMD5AndDES"); | ||
| 71 | } | ||
| 72 | } | ||
| 73 | |||
| 74 | public static final class PBEWithSHA1AndDESede | ||
| 75 | extends PBEKeyFactory { | ||
| 76 | public PBEWithSHA1AndDESede() { | ||
| 77 | super("PBEWithSHA1AndDESede"); | ||
| 78 | } | ||
| 79 | } | ||
| 80 | |||
| 81 | public static final class PBEWithSHA1AndRC2_40 | ||
| 82 | extends PBEKeyFactory { | ||
| 83 | public PBEWithSHA1AndRC2_40() { | ||
| 84 | super("PBEWithSHA1AndRC2_40"); | ||
| 85 | } | ||
| 86 | } | ||
| 87 | |||
| 88 | /* | ||
| 89 | * Private proprietary algorithm for supporting JCEKS. | ||
| 90 | */ | ||
| 91 | public static final class PBEWithMD5AndTripleDES | ||
| 92 | extends PBEKeyFactory { | ||
| 93 | public PBEWithMD5AndTripleDES() { | ||
| 94 | super("PBEWithMD5AndTripleDES"); | ||
| 95 | } | ||
| 96 | } | ||
| 97 | |||
| 98 | |||
| 99 | /** | ||
| 100 | * Generates a <code>SecretKey</code> object from the provided key | ||
| 101 | * specification (key material). | ||
| 102 | * | ||
| 103 | * @param keySpec the specification (key material) of the secret key | ||
| 104 | * | ||
| 105 | * @return the secret key | ||
| 106 | * | ||
| 107 | * @exception InvalidKeySpecException if the given key specification | ||
| 108 | * is inappropriate for this key factory to produce a public key. | ||
| 109 | */ | ||
| 110 | protected SecretKey engineGenerateSecret(KeySpec keySpec) | ||
| 111 | throws InvalidKeySpecException | ||
| 112 | { | ||
| 113 | if (!(keySpec instanceof PBEKeySpec)) { | ||
| 114 | throw new InvalidKeySpecException("Invalid key spec"); | ||
| 115 | } | ||
| 116 | return new PBEKey((PBEKeySpec)keySpec, type); | ||
| 117 | } | ||
| 118 | |||
| 119 | /** | ||
| 120 | * Returns a specification (key material) of the given key | ||
| 121 | * in the requested format. | ||
| 122 | * | ||
| 123 | * @param key the key | ||
| 124 | * | ||
| 125 | * @param keySpec the requested format in which the key material shall be | ||
| 126 | * returned | ||
| 127 | * | ||
| 128 | * @return the underlying key specification (key material) in the | ||
| 129 | * requested format | ||
| 130 | * | ||
| 131 | * @exception InvalidKeySpecException if the requested key specification is | ||
| 132 | * inappropriate for the given key, or the given key cannot be processed | ||
| 133 | * (e.g., the given key has an unrecognized algorithm or format). | ||
| 134 | */ | ||
| 135 | protected KeySpec engineGetKeySpec(SecretKey key, Class keySpecCl) | ||
| 136 | throws InvalidKeySpecException { | ||
| 137 | if ((key instanceof SecretKey) | ||
| 138 | && (validTypes.contains(key.getAlgorithm().toUpperCase())) | ||
| 139 | && (key.getFormat().equalsIgnoreCase("RAW"))) { | ||
| 140 | |||
| 141 | // Check if requested key spec is amongst the valid ones | ||
| 142 | if ((keySpecCl != null) | ||
| 143 | && PBEKeySpec.class.isAssignableFrom(keySpecCl)) { | ||
| 144 | byte[] passwdBytes = key.getEncoded(); | ||
| 145 | char[] passwdChars = new char[passwdBytes.length]; | ||
| 146 | for (int i=0; i<passwdChars.length; i++) | ||
| 147 | passwdChars[i] = (char) (passwdBytes[i] & 0x7f); | ||
| 148 | PBEKeySpec ret = new PBEKeySpec(passwdChars); | ||
| 149 | // password char[] was cloned in PBEKeySpec constructor, | ||
| 150 | // so we can zero it out here | ||
| 151 | java.util.Arrays.fill(passwdChars, ' '); | ||
| 152 | java.util.Arrays.fill(passwdBytes, (byte)0x00); | ||
| 153 | return ret; | ||
| 154 | } else { | ||
| 155 | throw new InvalidKeySpecException("Invalid key spec"); | ||
| 156 | } | ||
| 157 | } else { | ||
| 158 | throw new InvalidKeySpecException("Invalid key " | ||
| 159 | + "format/algorithm"); | ||
| 160 | } | ||
| 161 | } | ||
| 162 | |||
| 163 | /** | ||
| 164 | * Translates a <code>SecretKey</code> object, whose provider may be | ||
| 165 | * unknown or potentially untrusted, into a corresponding | ||
| 166 | * <code>SecretKey</code> object of this key factory. | ||
| 167 | * | ||
| 168 | * @param key the key whose provider is unknown or untrusted | ||
| 169 | * | ||
| 170 | * @return the translated key | ||
| 171 | * | ||
| 172 | * @exception InvalidKeyException if the given key cannot be processed by | ||
| 173 | * this key factory. | ||
| 174 | */ | ||
| 175 | protected SecretKey engineTranslateKey(SecretKey key) | ||
| 176 | throws InvalidKeyException | ||
| 177 | { | ||
| 178 | try { | ||
| 179 | if ((key != null) && | ||
| 180 | (validTypes.contains(key.getAlgorithm().toUpperCase())) && | ||
| 181 | (key.getFormat().equalsIgnoreCase("RAW"))) { | ||
| 182 | |||
| 183 | // Check if key originates from this factory | ||
| 184 | if (key instanceof com.sun.crypto.provider.PBEKey) { | ||
| 185 | return key; | ||
| 186 | } | ||
| 187 | |||
| 188 | // Convert key to spec | ||
| 189 | PBEKeySpec pbeKeySpec = (PBEKeySpec)engineGetKeySpec | ||
| 190 | (key, PBEKeySpec.class); | ||
| 191 | |||
| 192 | // Create key from spec, and return it | ||
| 193 | return engineGenerateSecret(pbeKeySpec); | ||
| 194 | } else { | ||
| 195 | throw new InvalidKeyException("Invalid key format/algorithm"); | ||
| 196 | } | ||
| 197 | |||
| 198 | } catch (InvalidKeySpecException ikse) { | ||
| 199 | throw new InvalidKeyException("Cannot translate key: " | ||
| 200 | + ikse.getMessage()); | ||
| 201 | } | ||
| 202 | } | ||
| 203 | } | ||