Showing the changes to java/pkg/sun/security/x509/CertAndKeyGen.java (1 of 18352 files). Show all
Unified · Split
| @@ -0,0 +1,301 @@ | ||
| 1 | +/* | |
| 2 | + * Copyright (c) 1996, 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 sun.security.x509; | |
| 27 | + | |
| 28 | +import java.io.IOException; | |
| 29 | +import java.security.cert.X509Certificate; | |
| 30 | +import java.security.cert.CertificateException; | |
| 31 | +import java.security.cert.CertificateEncodingException; | |
| 32 | +import java.security.*; | |
| 33 | +import java.util.Date; | |
| 34 | + | |
| 35 | +import sun.security.pkcs.PKCS10; | |
| 36 | + | |
| 37 | + | |
| 38 | +/** | |
| 39 | + * Generate a pair of keys, and provide access to them. This class is | |
| 40 | + * provided primarily for ease of use. | |
| 41 | + * | |
| 42 | + * <P>This provides some simple certificate management functionality. | |
| 43 | + * Specifically, it allows you to create self-signed X.509 certificates | |
| 44 | + * as well as PKCS 10 based certificate signing requests. | |
| 45 | + * | |
| 46 | + * <P>Keys for some public key signature algorithms have algorithm | |
| 47 | + * parameters, such as DSS/DSA. Some sites' Certificate Authorities | |
| 48 | + * adopt fixed algorithm parameters, which speeds up some operations | |
| 49 | + * including key generation and signing. <em>At this time, this interface | |
| 50 | + * does not provide a way to provide such algorithm parameters, e.g. | |
| 51 | + * by providing the CA certificate which includes those parameters.</em> | |
| 52 | + * | |
| 53 | + * <P>Also, note that at this time only signature-capable keys may be | |
| 54 | + * acquired through this interface. Diffie-Hellman keys, used for secure | |
| 55 | + * key exchange, may be supported later. | |
| 56 | + * | |
| 57 | + * @author David Brownell | |
| 58 | + * @author Hemma Prafullchandra | |
| 59 | + * @see PKCS10 | |
| 60 | + * @see X509CertImpl | |
| 61 | + */ | |
| 62 | +public final class CertAndKeyGen { | |
| 63 | + /** | |
| 64 | + * Creates a CertAndKeyGen object for a particular key type | |
| 65 | + * and signature algorithm. | |
| 66 | + * | |
| 67 | + * @param keyType type of key, e.g. "RSA", "DSA" | |
| 68 | + * @param sigAlg name of the signature algorithm, e.g. "MD5WithRSA", | |
| 69 | + * "MD2WithRSA", "SHAwithDSA". | |
| 70 | + * @exception NoSuchAlgorithmException on unrecognized algorithms. | |
| 71 | + */ | |
| 72 | + public CertAndKeyGen (String keyType, String sigAlg) | |
| 73 | + throws NoSuchAlgorithmException | |
| 74 | + { | |
| 75 | + keyGen = KeyPairGenerator.getInstance(keyType); | |
| 76 | + this.sigAlg = sigAlg; | |
| 77 | + } | |
| 78 | + | |
| 79 | + /** | |
| 80 | + * Creates a CertAndKeyGen object for a particular key type, | |
| 81 | + * signature algorithm, and provider. | |
| 82 | + * | |
| 83 | + * @param keyType type of key, e.g. "RSA", "DSA" | |
| 84 | + * @param sigAlg name of the signature algorithm, e.g. "MD5WithRSA", | |
| 85 | + * "MD2WithRSA", "SHAwithDSA". | |
| 86 | + * @param providerName name of the provider | |
| 87 | + * @exception NoSuchAlgorithmException on unrecognized algorithms. | |
| 88 | + * @exception NoSuchProviderException on unrecognized providers. | |
| 89 | + */ | |
| 90 | + public CertAndKeyGen (String keyType, String sigAlg, String providerName) | |
| 91 | + throws NoSuchAlgorithmException, NoSuchProviderException | |
| 92 | + { | |
| 93 | + if (providerName == null) { | |
| 94 | + keyGen = KeyPairGenerator.getInstance(keyType); | |
| 95 | + } else { | |
| 96 | + try { | |
| 97 | + keyGen = KeyPairGenerator.getInstance(keyType, providerName); | |
| 98 | + } catch (Exception e) { | |
| 99 | + // try first available provider instead | |
| 100 | + keyGen = KeyPairGenerator.getInstance(keyType); | |
| 101 | + } | |
| 102 | + } | |
| 103 | + this.sigAlg = sigAlg; | |
| 104 | + } | |
| 105 | + | |
| 106 | + /** | |
| 107 | + * Sets the source of random numbers used when generating keys. | |
| 108 | + * If you do not provide one, a system default facility is used. | |
| 109 | + * You may wish to provide your own source of random numbers | |
| 110 | + * to get a reproducible sequence of keys and signatures, or | |
| 111 | + * because you may be able to take advantage of strong sources | |
| 112 | + * of randomness/entropy in your environment. | |
| 113 | + */ | |
| 114 | + public void setRandom (SecureRandom generator) | |
| 115 | + { | |
| 116 | + prng = generator; | |
| 117 | + } | |
| 118 | + | |
| 119 | + // want "public void generate (X509Certificate)" ... inherit DSA/D-H param | |
| 120 | + | |
| 121 | + /** | |
| 122 | + * Generates a random public/private key pair, with a given key | |
| 123 | + * size. Different algorithms provide different degrees of security | |
| 124 | + * for the same key size, because of the "work factor" involved in | |
| 125 | + * brute force attacks. As computers become faster, it becomes | |
| 126 | + * easier to perform such attacks. Small keys are to be avoided. | |
| 127 | + * | |
| 128 | + * <P>Note that not all values of "keyBits" are valid for all | |
| 129 | + * algorithms, and not all public key algorithms are currently | |
| 130 | + * supported for use in X.509 certificates. If the algorithm | |
| 131 | + * you specified does not produce X.509 compatible keys, an | |
| 132 | + * invalid key exception is thrown. | |
| 133 | + * | |
| 134 | + * @param keyBits the number of bits in the keys. | |
| 135 | + * @exception InvalidKeyException if the environment does not | |
| 136 | + * provide X.509 public keys for this signature algorithm. | |
| 137 | + */ | |
| 138 | + public void generate (int keyBits) | |
| 139 | + throws InvalidKeyException | |
| 140 | + { | |
| 141 | + KeyPair pair; | |
| 142 | + | |
| 143 | + try { | |
| 144 | + if (prng == null) { | |
| 145 | + prng = new SecureRandom(); | |
| 146 | + } | |
| 147 | + keyGen.initialize(keyBits, prng); | |
| 148 | + pair = keyGen.generateKeyPair(); | |
| 149 | + | |
| 150 | + } catch (Exception e) { | |
| 151 | + throw new IllegalArgumentException(e.getMessage()); | |
| 152 | + } | |
| 153 | + | |
| 154 | + publicKey = pair.getPublic(); | |
| 155 | + privateKey = pair.getPrivate(); | |
| 156 | + } | |
| 157 | + | |
| 158 | + | |
| 159 | + /** | |
| 160 | + * Returns the public key of the generated key pair if it is of type | |
| 161 | + * <code>X509Key</code>, or null if the public key is of a different type. | |
| 162 | + * | |
| 163 | + * XXX Note: This behaviour is needed for backwards compatibility. | |
| 164 | + * What this method really should return is the public key of the | |
| 165 | + * generated key pair, regardless of whether or not it is an instance of | |
| 166 | + * <code>X509Key</code>. Accordingly, the return type of this method | |
| 167 | + * should be <code>PublicKey</code>. | |
| 168 | + */ | |
| 169 | + public X509Key getPublicKey() | |
| 170 | + { | |
| 171 | + if (!(publicKey instanceof X509Key)) { | |
| 172 | + return null; | |
| 173 | + } | |
| 174 | + return (X509Key)publicKey; | |
| 175 | + } | |
| 176 | + | |
| 177 | + | |
| 178 | + /** | |
| 179 | + * Returns the private key of the generated key pair. | |
| 180 | + * | |
| 181 | + * <P><STRONG><em>Be extremely careful when handling private keys. | |
| 182 | + * When private keys are not kept secret, they lose their ability | |
| 183 | + * to securely authenticate specific entities ... that is a huge | |
| 184 | + * security risk!</em></STRONG> | |
| 185 | + */ | |
| 186 | + public PrivateKey getPrivateKey () | |
| 187 | + { | |
| 188 | + return privateKey; | |
| 189 | + } | |
| 190 | + | |
| 191 | + | |
| 192 | + /** | |
| 193 | + * Returns a self-signed X.509v3 certificate for the public key. | |
| 194 | + * The certificate is immediately valid. No extensions. | |
| 195 | + * | |
| 196 | + * <P>Such certificates normally are used to identify a "Certificate | |
| 197 | + * Authority" (CA). Accordingly, they will not always be accepted by | |
| 198 | + * other parties. However, such certificates are also useful when | |
| 199 | + * you are bootstrapping your security infrastructure, or deploying | |
| 200 | + * system prototypes. | |
| 201 | + * | |
| 202 | + * @param myname X.500 name of the subject (who is also the issuer) | |
| 203 | + * @param firstDate the issue time of the certificate | |
| 204 | + * @param validity how long the certificate should be valid, in seconds | |
| 205 | + * @exception CertificateException on certificate handling errors. | |
| 206 | + * @exception InvalidKeyException on key handling errors. | |
| 207 | + * @exception SignatureException on signature handling errors. | |
| 208 | + * @exception NoSuchAlgorithmException on unrecognized algorithms. | |
| 209 | + * @exception NoSuchProviderException on unrecognized providers. | |
| 210 | + */ | |
| 211 | + public X509Certificate getSelfCertificate ( | |
| 212 | + X500Name myname, Date firstDate, long validity) | |
| 213 | + throws CertificateException, InvalidKeyException, SignatureException, | |
| 214 | + NoSuchAlgorithmException, NoSuchProviderException | |
| 215 | + { | |
| 216 | + X509CertImpl cert; | |
| 217 | + Date lastDate; | |
| 218 | + | |
| 219 | + try { | |
| 220 | + lastDate = new Date (); | |
| 221 | + lastDate.setTime (firstDate.getTime () + validity * 1000); | |
| 222 | + | |
| 223 | + CertificateValidity interval = | |
| 224 | + new CertificateValidity(firstDate,lastDate); | |
| 225 | + | |
| 226 | + X509CertInfo info = new X509CertInfo(); | |
| 227 | + // Add all mandatory attributes | |
| 228 | + info.set(X509CertInfo.VERSION, | |
| 229 | + new CertificateVersion(CertificateVersion.V3)); | |
| 230 | + info.set(X509CertInfo.SERIAL_NUMBER, new CertificateSerialNumber( | |
| 231 | + new java.util.Random().nextInt() & 0x7fffffff)); | |
| 232 | + AlgorithmId algID = AlgorithmId.getAlgorithmId(sigAlg); | |
| 233 | + info.set(X509CertInfo.ALGORITHM_ID, | |
| 234 | + new CertificateAlgorithmId(algID)); | |
| 235 | + info.set(X509CertInfo.SUBJECT, new CertificateSubjectName(myname)); | |
| 236 | + info.set(X509CertInfo.KEY, new CertificateX509Key(publicKey)); | |
| 237 | + info.set(X509CertInfo.VALIDITY, interval); | |
| 238 | + info.set(X509CertInfo.ISSUER, new CertificateIssuerName(myname)); | |
| 239 | + | |
| 240 | + cert = new X509CertImpl(info); | |
| 241 | + cert.sign(privateKey, this.sigAlg); | |
| 242 | + | |
| 243 | + return (X509Certificate)cert; | |
| 244 | + | |
| 245 | + } catch (IOException e) { | |
| 246 | + throw new CertificateEncodingException("getSelfCert: " + | |
| 247 | + e.getMessage()); | |
| 248 | + } | |
| 249 | + } | |
| 250 | + | |
| 251 | + // Keep the old method | |
| 252 | + public X509Certificate getSelfCertificate (X500Name myname, long validity) | |
| 253 | + throws CertificateException, InvalidKeyException, SignatureException, | |
| 254 | + NoSuchAlgorithmException, NoSuchProviderException | |
| 255 | + { | |
| 256 | + return getSelfCertificate(myname, new Date(), validity); | |
| 257 | + } | |
| 258 | + | |
| 259 | + /** | |
| 260 | + * Returns a PKCS #10 certificate request. The caller uses either | |
| 261 | + * <code>PKCS10.print</code> or <code>PKCS10.toByteArray</code> | |
| 262 | + * operations on the result, to get the request in an appropriate | |
| 263 | + * transmission format. | |
| 264 | + * | |
| 265 | + * <P>PKCS #10 certificate requests are sent, along with some proof | |
| 266 | + * of identity, to Certificate Authorities (CAs) which then issue | |
| 267 | + * X.509 public key certificates. | |
| 268 | + * | |
| 269 | + * @param myname X.500 name of the subject | |
| 270 | + * @exception InvalidKeyException on key handling errors. | |
| 271 | + * @exception SignatureException on signature handling errors. | |
| 272 | + */ | |
| 273 | + public PKCS10 getCertRequest (X500Name myname) | |
| 274 | + throws InvalidKeyException, SignatureException | |
| 275 | + { | |
| 276 | + PKCS10 req = new PKCS10 (publicKey); | |
| 277 | + | |
| 278 | + try { | |
| 279 | + Signature signature = Signature.getInstance(sigAlg); | |
| 280 | + signature.initSign (privateKey); | |
| 281 | + req.encodeAndSign(myname, signature); | |
| 282 | + | |
| 283 | + } catch (CertificateException e) { | |
| 284 | + throw new SignatureException (sigAlg + " CertificateException"); | |
| 285 | + | |
| 286 | + } catch (IOException e) { | |
| 287 | + throw new SignatureException (sigAlg + " IOException"); | |
| 288 | + | |
| 289 | + } catch (NoSuchAlgorithmException e) { | |
| 290 | + // "can't happen" | |
| 291 | + throw new SignatureException (sigAlg + " unavailable?"); | |
| 292 | + } | |
| 293 | + return req; | |
| 294 | + } | |
| 295 | + | |
| 296 | + private SecureRandom prng; | |
| 297 | + private String sigAlg; | |
| 298 | + private KeyPairGenerator keyGen; | |
| 299 | + private PublicKey publicKey; | |
| 300 | + private PrivateKey privateKey; | |
| 301 | +} | |