Showing the changes to java/pkg/sun/security/x509/KeyIdentifier.java (1 of 18352 files). Show all
Unified · Split
| @@ -0,0 +1,154 @@ | |||
| 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 | } | ||