001/* TrustAnchor.java -- an ultimately-trusted certificate. 002 Copyright (C) 2003, 2004 Free Software Foundation, Inc. 003 004This file is part of GNU Classpath. 005 006GNU Classpath is free software; you can redistribute it and/or modify 007it under the terms of the GNU General Public License as published by 008the Free Software Foundation; either version 2, or (at your option) 009any later version. 010 011GNU Classpath is distributed in the hope that it will be useful, but 012WITHOUT ANY WARRANTY; without even the implied warranty of 013MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 014General Public License for more details. 015 016You should have received a copy of the GNU General Public License 017along with GNU Classpath; see the file COPYING. If not, write to the 018Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 01902110-1301 USA. 020 021Linking this library statically or dynamically with other modules is 022making a combined work based on this library. Thus, the terms and 023conditions of the GNU General Public License cover the whole 024combination. 025 026As a special exception, the copyright holders of this library give you 027permission to link this library with independent modules to produce an 028executable, regardless of the license terms of these independent 029modules, and to copy and distribute the resulting executable under 030terms of your choice, provided that you also meet, for each linked 031independent module, the terms and conditions of the license of that 032module. An independent module is a module which is not derived from 033or based on this library. If you modify this library, you may extend 034this exception to your version of the library, but you are not 035obligated to do so. If you do not wish to do so, delete this 036exception statement from your version. */ 037 038 039package java.security.cert; 040 041import gnu.java.security.x509.X500DistinguishedName; 042 043import java.security.PublicKey; 044 045/** 046 * An ultimately-trusted certificate to serve as the root of a 047 * certificate chain. 048 * 049 * @author Casey Marshall (rsdio@metastatic.org) 050 */ 051public class TrustAnchor 052{ 053 054 // Fields. 055 // ------------------------------------------------------------------------ 056 057 /** The certificate authority's distinguished name. */ 058 private final X500DistinguishedName caName; 059 060 /** The certficate authority's public key. */ 061 private final PublicKey caKey; 062 063 /** The certficate authority's certificate. */ 064 private final X509Certificate trustedCert; 065 066 /** The encoded name constraints bytes. */ 067 private final byte[] nameConstraints; 068 069 // Constnuctors. 070 // ------------------------------------------------------------------------ 071 072 /** 073 * Create a new trust anchor from a certificate and (optional) name 074 * constraints. 075 * 076 * <p>If the <i>nameConstraints</i> argument in non-null, it will be 077 * copied to prevent modification. 078 * 079 * @param trustedCert The trusted certificate. 080 * @param nameConstraints The encoded nameConstraints. 081 */ 082 public TrustAnchor(X509Certificate trustedCert, byte[] nameConstraints) 083 { 084 if (trustedCert == null) 085 throw new NullPointerException(); 086 this.trustedCert = trustedCert; 087 caName = null; 088 caKey = null; 089 if (nameConstraints != null) 090 this.nameConstraints = (byte[]) nameConstraints.clone(); 091 else 092 this.nameConstraints = null; 093 } 094 095 /** 096 * Create a new trust anchor from a certificate authority's 097 * distinguished name, public key, and (optional) name constraints. 098 * 099 * <p>If the <i>nameConstraints</i> argument in non-null, it will be 100 * copied to prevent modification. 101 * 102 * @params caName The CA's distinguished name. 103 * @params caKey The CA's public key. 104 * @params nameConstraints The encoded nameConstraints. 105 */ 106 public TrustAnchor(String caName, PublicKey caKey, byte[] nameConstraints) 107 { 108 if (caName == null || caKey == null) 109 throw new NullPointerException(); 110 if (caName.length() == 0) 111 throw new IllegalArgumentException(); 112 trustedCert = null; 113 this.caName = new X500DistinguishedName(caName); 114 this.caKey = caKey; 115 if (nameConstraints != null) 116 this.nameConstraints = (byte[]) nameConstraints.clone(); 117 else 118 this.nameConstraints = null; 119 } 120 121 // Instance methods. 122 // ------------------------------------------------------------------------ 123 124 /** 125 * Return the trusted certificate, or null if none was specified. 126 * 127 * @return The trusted certificate. 128 */ 129 public final X509Certificate getTrustedCert() 130 { 131 return trustedCert; 132 } 133 134 /** 135 * Return the certificate authority's distinguished name, or null if 136 * none was specified. 137 * 138 * @return The CA's distinguished name. 139 */ 140 public final String getCAName() 141 { 142 if (caName != null) 143 return caName.toString(); 144 return null; 145 } 146 147 /** 148 * Return the certificate authority's public key, or null if none was 149 * specified. 150 * 151 * @return The CA's public key. 152 */ 153 public final PublicKey getCAPublicKey() 154 { 155 return caKey; 156 } 157 158 /** 159 * Return the encoded name constraints, or null if none was specified. 160 * 161 * <p>The name constraints byte array is copied when this method is 162 * called to prevent modification. 163 * 164 * @return The encoded name constraints. 165 */ 166 public final byte[] getNameConstraints() 167 { 168 if (nameConstraints == null) 169 return null; 170 return (byte[]) nameConstraints.clone(); 171 } 172 173 /** 174 * Return a printable representation of this trust anchor. 175 * 176 * @return The printable representation. 177 */ 178 public String toString() 179 { 180 if (trustedCert == null) 181 return "[ Trusted CA Public Key=" + caKey + ", Trusted CA Issuer Name=" 182 + caName.toString() + " ]"; 183 return "[ Trusted CA Certificate=" + trustedCert + " ]"; 184 } 185}