Showing the changes to java/pkg/sun/security/x509/KeyIdentifier.java (1 of 18352 files). Show all
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| 1 | +/* | |
| 2 | + * Copyright (c) 1997, 1999, 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 sun.security.x509; | |
| 27 | + | |
| 28 | +import java.io.IOException; | |
| 29 | +import java.security.PublicKey; | |
| 30 | +import java.security.MessageDigest; | |
| 31 | +import java.security.NoSuchAlgorithmException; | |
| 32 | + | |
| 33 | +import sun.misc.HexDumpEncoder; | |
| 34 | +import sun.security.util.*; | |
| 35 | + | |
| 36 | +/** | |
| 37 | + * Represent the Key Identifier ASN.1 object. | |
| 38 | + * | |
| 39 | + * @author Amit Kapoor | |
| 40 | + * @author Hemma Prafullchandra | |
| 41 | + */ | |
| 42 | +public class KeyIdentifier { | |
| 43 | + private byte[] octetString; | |
| 44 | + | |
| 45 | + /** | |
| 46 | + * Create a KeyIdentifier with the passed bit settings. | |
| 47 | + * | |
| 48 | + * @param octetString the octet string identifying the key identifier. | |
| 49 | + */ | |
| 50 | + public KeyIdentifier(byte[] octetString) { | |
| 51 | + this.octetString = octetString.clone(); | |
| 52 | + } | |
| 53 | + | |
| 54 | + /** | |
| 55 | + * Create a KeyIdentifier from the DER encoded value. | |
| 56 | + * | |
| 57 | + * @param val the DerValue | |
| 58 | + */ | |
| 59 | + public KeyIdentifier(DerValue val) throws IOException { | |
| 60 | + octetString = val.getOctetString(); | |
| 61 | + } | |
| 62 | + | |
| 63 | + /** | |
| 64 | + * Creates a KeyIdentifier from a public-key value. | |
| 65 | + * | |
| 66 | + * <p>From RFC2459: Two common methods for generating key identifiers from | |
| 67 | + * the public key are: | |
| 68 | + * <ol> | |
| 69 | + * <li>The keyIdentifier is composed of the 160-bit SHA-1 hash of the | |
| 70 | + * value of the BIT STRING subjectPublicKey (excluding the tag, | |
| 71 | + * length, and number of unused bits). | |
| 72 | + * <p> | |
| 73 | + * <li>The keyIdentifier is composed of a four bit type field with | |
| 74 | + * the value 0100 followed by the least significant 60 bits of the | |
| 75 | + * SHA-1 hash of the value of the BIT STRING subjectPublicKey. | |
| 76 | + * </ol> | |
| 77 | + * <p>This method supports method 1. | |
| 78 | + * | |
| 79 | + * @param pubKey the public key from which to construct this KeyIdentifier | |
| 80 | + * @throws IOException on parsing errors | |
| 81 | + */ | |
| 82 | + public KeyIdentifier(PublicKey pubKey) | |
| 83 | + throws IOException | |
| 84 | + { | |
| 85 | + DerValue algAndKey = new DerValue(pubKey.getEncoded()); | |
| 86 | + if (algAndKey.tag != DerValue.tag_Sequence) | |
| 87 | + throw new IOException("PublicKey value is not a valid " | |
| 88 | + + "X.509 public key"); | |
| 89 | + | |
| 90 | + AlgorithmId algid = AlgorithmId.parse(algAndKey.data.getDerValue()); | |
| 91 | + byte[] key = algAndKey.data.getUnalignedBitString().toByteArray(); | |
| 92 | + | |
| 93 | + MessageDigest md = null; | |
| 94 | + try { | |
| 95 | + md = MessageDigest.getInstance("SHA1"); | |
| 96 | + } catch (NoSuchAlgorithmException e3) { | |
| 97 | + throw new IOException("SHA1 not supported"); | |
| 98 | + } | |
| 99 | + md.update(key); | |
| 100 | + this.octetString = md.digest(); | |
| 101 | + } | |
| 102 | + | |
| 103 | + /** | |
| 104 | + * Return the value of the KeyIdentifier as byte array. | |
| 105 | + */ | |
| 106 | + public byte[] getIdentifier() { | |
| 107 | + return octetString.clone(); | |
| 108 | + } | |
| 109 | + | |
| 110 | + /** | |
| 111 | + * Returns a printable representation of the KeyUsage. | |
| 112 | + */ | |
| 113 | + public String toString() { | |
| 114 | + String s = "KeyIdentifier [\n"; | |
| 115 | + | |
| 116 | + HexDumpEncoder encoder = new HexDumpEncoder(); | |
| 117 | + s += encoder.encodeBuffer(octetString); | |
| 118 | + s += "]\n"; | |
| 119 | + return (s); | |
| 120 | + } | |
| 121 | + | |
| 122 | + /** | |
| 123 | + * Write the KeyIdentifier to the DerOutputStream. | |
| 124 | + * | |
| 125 | + * @param out the DerOutputStream to write the object to. | |
| 126 | + * @exception IOException | |
| 127 | + */ | |
| 128 | + void encode(DerOutputStream out) throws IOException { | |
| 129 | + out.putOctetString(octetString); | |
| 130 | + } | |
| 131 | + | |
| 132 | + /** | |
| 133 | + * Returns a hash code value for this object. | |
| 134 | + * Objects that are equal will also have the same hashcode. | |
| 135 | + */ | |
| 136 | + public int hashCode () { | |
| 137 | + int retval = 0; | |
| 138 | + for (int i = 0; i < octetString.length; i++) | |
| 139 | + retval += octetString[i] * i; | |
| 140 | + return retval; | |
| 141 | + } | |
| 142 | + | |
| 143 | + /** | |
| 144 | + * Indicates whether some other object is "equal to" this one. | |
| 145 | + */ | |
| 146 | + public boolean equals(Object other) { | |
| 147 | + if (this == other) | |
| 148 | + return true; | |
| 149 | + if (!(other instanceof KeyIdentifier)) | |
| 150 | + return false; | |
| 151 | + return java.util.Arrays.equals(octetString, | |
| 152 | + ((KeyIdentifier)other).getIdentifier()); | |
| 153 | + } | |
| 154 | +} | |