| /* |
| * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package sun.security.provider.certpath; |
| |
| import java.io.IOException; |
| import java.math.BigInteger; |
| import java.security.MessageDigest; |
| import java.security.NoSuchAlgorithmException; |
| import java.security.cert.X509Certificate; |
| import java.util.Arrays; |
| import sun.misc.HexDumpEncoder; |
| import sun.security.x509.*; |
| import sun.security.util.*; |
| |
| /** |
| * This class corresponds to the CertId field in OCSP Request |
| * and the OCSP Response. The ASN.1 definition for CertID is defined |
| * in RFC 2560 as: |
| * <pre> |
| * |
| * CertID ::= SEQUENCE { |
| * hashAlgorithm AlgorithmIdentifier, |
| * issuerNameHash OCTET STRING, -- Hash of Issuer's DN |
| * issuerKeyHash OCTET STRING, -- Hash of Issuers public key |
| * serialNumber CertificateSerialNumber |
| * } |
| * |
| * </pre> |
| * |
| * @author Ram Marti |
| */ |
| |
| public class CertId { |
| |
| private static final boolean debug = false; |
| private static final AlgorithmId SHA1_ALGID |
| = new AlgorithmId(AlgorithmId.SHA_oid); |
| private final AlgorithmId hashAlgId; |
| private final byte[] issuerNameHash; |
| private final byte[] issuerKeyHash; |
| private final SerialNumber certSerialNumber; |
| private int myhash = -1; // hashcode for this CertId |
| |
| /** |
| * Creates a CertId. The hash algorithm used is SHA-1. |
| */ |
| public CertId(X509Certificate issuerCert, SerialNumber serialNumber) |
| throws IOException { |
| |
| // compute issuerNameHash |
| MessageDigest md = null; |
| try { |
| md = MessageDigest.getInstance("SHA1"); |
| } catch (NoSuchAlgorithmException nsae) { |
| throw new IOException("Unable to create CertId", nsae); |
| } |
| hashAlgId = SHA1_ALGID; |
| md.update(issuerCert.getSubjectX500Principal().getEncoded()); |
| issuerNameHash = md.digest(); |
| |
| // compute issuerKeyHash (remove the tag and length) |
| byte[] pubKey = issuerCert.getPublicKey().getEncoded(); |
| DerValue val = new DerValue(pubKey); |
| DerValue[] seq = new DerValue[2]; |
| seq[0] = val.data.getDerValue(); // AlgorithmID |
| seq[1] = val.data.getDerValue(); // Key |
| byte[] keyBytes = seq[1].getBitString(); |
| md.update(keyBytes); |
| issuerKeyHash = md.digest(); |
| certSerialNumber = serialNumber; |
| |
| if (debug) { |
| HexDumpEncoder encoder = new HexDumpEncoder(); |
| System.out.println("Issuer Certificate is " + issuerCert); |
| System.out.println("issuerNameHash is " + |
| encoder.encodeBuffer(issuerNameHash)); |
| System.out.println("issuerKeyHash is " + |
| encoder.encodeBuffer(issuerKeyHash)); |
| System.out.println("SerialNumber is " + serialNumber.getNumber()); |
| } |
| } |
| |
| /** |
| * Creates a CertId from its ASN.1 DER encoding. |
| */ |
| public CertId(DerInputStream derIn) throws IOException { |
| hashAlgId = AlgorithmId.parse(derIn.getDerValue()); |
| issuerNameHash = derIn.getOctetString(); |
| issuerKeyHash = derIn.getOctetString(); |
| certSerialNumber = new SerialNumber(derIn); |
| } |
| |
| /** |
| * Return the hash algorithm identifier. |
| */ |
| public AlgorithmId getHashAlgorithm() { |
| return hashAlgId; |
| } |
| |
| /** |
| * Return the hash value for the issuer name. |
| */ |
| public byte[] getIssuerNameHash() { |
| return issuerNameHash; |
| } |
| |
| /** |
| * Return the hash value for the issuer key. |
| */ |
| public byte[] getIssuerKeyHash() { |
| return issuerKeyHash; |
| } |
| |
| /** |
| * Return the serial number. |
| */ |
| public BigInteger getSerialNumber() { |
| return certSerialNumber.getNumber(); |
| } |
| |
| /** |
| * Encode the CertId using ASN.1 DER. |
| * The hash algorithm used is SHA-1. |
| */ |
| public void encode(DerOutputStream out) throws IOException { |
| |
| DerOutputStream tmp = new DerOutputStream(); |
| hashAlgId.encode(tmp); |
| tmp.putOctetString(issuerNameHash); |
| tmp.putOctetString(issuerKeyHash); |
| certSerialNumber.encode(tmp); |
| out.write(DerValue.tag_Sequence, tmp); |
| |
| if (debug) { |
| HexDumpEncoder encoder = new HexDumpEncoder(); |
| System.out.println("Encoded certId is " + |
| encoder.encode(out.toByteArray())); |
| } |
| } |
| |
| /** |
| * Returns a hashcode value for this CertId. |
| * |
| * @return the hashcode value. |
| */ |
| @Override public int hashCode() { |
| if (myhash == -1) { |
| myhash = hashAlgId.hashCode(); |
| for (int i = 0; i < issuerNameHash.length; i++) { |
| myhash += issuerNameHash[i] * i; |
| } |
| for (int i = 0; i < issuerKeyHash.length; i++) { |
| myhash += issuerKeyHash[i] * i; |
| } |
| myhash += certSerialNumber.getNumber().hashCode(); |
| } |
| return myhash; |
| } |
| |
| /** |
| * Compares this CertId for equality with the specified |
| * object. Two CertId objects are considered equal if their hash algorithms, |
| * their issuer name and issuer key hash values and their serial numbers |
| * are equal. |
| * |
| * @param other the object to test for equality with this object. |
| * @return true if the objects are considered equal, false otherwise. |
| */ |
| @Override public boolean equals(Object other) { |
| if (this == other) { |
| return true; |
| } |
| if (other == null || (!(other instanceof CertId))) { |
| return false; |
| } |
| |
| CertId that = (CertId) other; |
| if (hashAlgId.equals(that.getHashAlgorithm()) && |
| Arrays.equals(issuerNameHash, that.getIssuerNameHash()) && |
| Arrays.equals(issuerKeyHash, that.getIssuerKeyHash()) && |
| certSerialNumber.getNumber().equals(that.getSerialNumber())) { |
| return true; |
| } else { |
| return false; |
| } |
| } |
| |
| /** |
| * Create a string representation of the CertId. |
| */ |
| @Override public String toString() { |
| StringBuilder sb = new StringBuilder(); |
| sb.append("CertId \n"); |
| sb.append("Algorithm: " + hashAlgId.toString() +"\n"); |
| sb.append("issuerNameHash \n"); |
| HexDumpEncoder encoder = new HexDumpEncoder(); |
| sb.append(encoder.encode(issuerNameHash)); |
| sb.append("\nissuerKeyHash: \n"); |
| sb.append(encoder.encode(issuerKeyHash)); |
| sb.append("\n" + certSerialNumber.toString()); |
| return sb.toString(); |
| } |
| } |