util-testing/org/cacert/gigi/util/SimpleSigner.java

   1 package org.cacert.gigi.util;
   2
   3 import java.io.File;
   4 import java.io.FileInputStream;
   5 import java.io.FileNotFoundException;
   6 import java.io.FileOutputStream;
   7 import java.io.IOException;
   8 import java.io.InputStream;
   9 import java.io.InputStreamReader;
  10 import java.io.PrintWriter;
  11 import java.io.Reader;
  12 import java.math.BigInteger;
  13 import java.nio.file.Paths;
  14 import java.security.GeneralSecurityException;
  15 import java.security.KeyFactory;
  16 import java.security.NoSuchAlgorithmException;
  17 import java.security.PrivateKey;
  18 import java.security.PublicKey;
  19 import java.security.Signature;
  20 import java.security.cert.CertificateFactory;
  21 import java.security.cert.X509Certificate;
  22 import java.security.spec.InvalidKeySpecException;
  23 import java.security.spec.PKCS8EncodedKeySpec;
  24 import java.sql.SQLException;
  25 import java.sql.Timestamp;
  26 import java.text.ParseException;
  27 import java.text.SimpleDateFormat;
  28 import java.util.Base64;
  29 import java.util.Calendar;
  30 import java.util.Date;
  31 import java.util.GregorianCalendar;
  32 import java.util.HashMap;
  33 import java.util.LinkedList;
  34 import java.util.List;
  35 import java.util.Map;
  36 import java.util.Map.Entry;
  37 import java.util.Properties;
  38 import java.util.TimeZone;
  39
  40 import javax.security.auth.x500.X500Principal;
  41
  42 import org.cacert.gigi.crypto.SPKAC;
  43 import org.cacert.gigi.database.DatabaseConnection;
  44 import org.cacert.gigi.database.DatabaseConnection.Link;
  45 import org.cacert.gigi.database.GigiPreparedStatement;
  46 import org.cacert.gigi.database.GigiResultSet;
  47 import org.cacert.gigi.dbObjects.Certificate.CSRType;
  48 import org.cacert.gigi.dbObjects.Certificate.SANType;
  49 import org.cacert.gigi.dbObjects.Certificate.SubjectAlternateName;
  50 import org.cacert.gigi.dbObjects.CertificateProfile;
  51 import org.cacert.gigi.dbObjects.Digest;
  52 import org.cacert.gigi.output.DateSelector;
  53
  54 import sun.security.pkcs10.PKCS10;
  55 import sun.security.util.DerOutputStream;
  56 import sun.security.util.DerValue;
  57 import sun.security.util.ObjectIdentifier;
  58 import sun.security.x509.AVA;
  59 import sun.security.x509.AlgorithmId;
  60 import sun.security.x509.GeneralNameInterface;
  61 import sun.security.x509.RDN;
  62 import sun.security.x509.X500Name;
  63
  64 public class SimpleSigner {
  65
  66     private static GigiPreparedStatement warnMail;
  67
  68     private static GigiPreparedStatement updateMail;
  69
  70     private static GigiPreparedStatement readyCerts;
  71
  72     private static GigiPreparedStatement getSANSs;
  73
  74     private static GigiPreparedStatement revoke;
  75
  76     private static GigiPreparedStatement revokeCompleted;
  77
  78     private static GigiPreparedStatement finishJob;
  79
  80     private static GigiPreparedStatement locateCA;
  81
  82     private static volatile boolean running = true;
  83
  84     private static Thread runner;
  85
  86     private static SimpleDateFormat sdf = new SimpleDateFormat("yyMMddHHmmss'Z'");
  87
  88     static {
  89         TimeZone.setDefault(TimeZone.getTimeZone("UTC"));
  90         sdf.setTimeZone(TimeZone.getTimeZone("UTC"));
  91     }
  92
  93     public static void main(String[] args) throws IOException, SQLException, InterruptedException {
  94         Properties p = new Properties();
  95         try (Reader reader = new InputStreamReader(new FileInputStream("config/gigi.properties"), "UTF-8")) {
  96             p.load(reader);
  97         }
  98         DatabaseConnection.init(p);
  99
 100         runSigner();
 101     }
 102
 103     public static void stopSigner() throws InterruptedException {
 104         Thread capturedRunner;
 105         synchronized (SimpleSigner.class) {
 106             if (runner == null) {
 107                 throw new IllegalStateException("already stopped");
 108             }
 109             capturedRunner = runner;
 110             running = false;
 111             SimpleSigner.class.notifyAll();
 112         }
 113         capturedRunner.join();
 114     }
 115
 116     public synchronized static void runSigner() throws SQLException, IOException, InterruptedException {
 117         if (runner != null) {
 118             throw new IllegalStateException("already running");
 119         }
 120         running = true;
 121
 122         runner = new Thread() {
 123
 124             @Override
 125             public void run() {
 126                 try (Link l = DatabaseConnection.newLink(false)) {
 127                     readyCerts = new GigiPreparedStatement("SELECT certs.id AS id, certs.csr_name, jobs.id AS jobid, csr_type, md, `executeFrom`, `executeTo`, profile FROM jobs " + //
 128                             "INNER JOIN certs ON certs.id=jobs.`targetId` " + //
 129                             "INNER JOIN profiles ON profiles.id=certs.profile " + //
 130                             "WHERE jobs.state='open' " + //
 131                             "AND task='sign'");
 132
 133                     getSANSs = new GigiPreparedStatement("SELECT contents, type FROM `subjectAlternativeNames` " + //
 134                             "WHERE `certId`=?");
 135
 136                     updateMail = new GigiPreparedStatement("UPDATE certs SET crt_name=?," + " created=NOW(), serial=?, caid=? WHERE id=?");
 137                     warnMail = new GigiPreparedStatement("UPDATE jobs SET warning=warning+1, state=IF(warning<3, 'open','error') WHERE id=?");
 138
 139                     revoke = new GigiPreparedStatement("SELECT certs.id, certs.csr_name,jobs.id FROM jobs INNER JOIN certs ON jobs.`targetId`=certs.id" + " WHERE jobs.state='open' AND task='revoke'");
 140                     revokeCompleted = new GigiPreparedStatement("UPDATE certs SET revoked=NOW() WHERE id=?");
 141
 142                     finishJob = new GigiPreparedStatement("UPDATE jobs SET state='done' WHERE id=?");
 143
 144                     locateCA = new GigiPreparedStatement("SELECT id FROM cacerts WHERE keyname=?");
 145
 146                     work();
 147                 } catch (InterruptedException e) {
 148                     throw new Error(e);
 149                 }
 150             }
 151
 152         };
 153         runner.start();
 154     }
 155
 156     public static void ping() {
 157         synchronized (SimpleSigner.class) {
 158             SimpleSigner.class.notifyAll();
 159             try {
 160                 SimpleSigner.class.wait(2000);
 161             } catch (InterruptedException e) {
 162                 e.printStackTrace();
 163             }
 164         }
 165     }
 166
 167     private synchronized static void work() {
 168         try {
 169             gencrl();
 170         } catch (IOException e2) {
 171             e2.printStackTrace();
 172         } catch (InterruptedException e2) {
 173             e2.printStackTrace();
 174         }
 175
 176         while (running) {
 177             try {
 178                 signCertificates();
 179                 revokeCertificates();
 180
 181                 SimpleSigner.class.notifyAll();
 182                 SimpleSigner.class.wait(5000);
 183             } catch (IOException e) {
 184                 e.printStackTrace();
 185             } catch (SQLException e) {
 186                 e.printStackTrace();
 187             } catch (InterruptedException e1) {
 188             }
 189         }
 190         runner = null;
 191     }
 192
 193     private static void revokeCertificates() throws SQLException, IOException, InterruptedException {
 194         GigiResultSet rs = revoke.executeQuery();
 195         boolean worked = false;
 196         while (rs.next()) {
 197             int id = rs.getInt(1);
 198             worked = true;
 199             System.out.println("Revoke faked: " + id);
 200             revokeCompleted.setInt(1, id);
 201             revokeCompleted.execute();
 202             finishJob.setInt(1, rs.getInt(3));
 203             finishJob.execute();
 204         }
 205         if (worked) {
 206             gencrl();
 207         }
 208     }
 209
 210     private static void gencrl() throws IOException, InterruptedException {
 211         if (true) {
 212             return;
 213         }
 214         String[] call = new String[] {
 215                 "openssl",
 216                 "ca",//
 217                 "-cert",
 218                 "../unassured.crt",//
 219                 "-keyfile",
 220                 "../unassured.key",//
 221                 "-gencrl",//
 222                 "-crlhours",//
 223                 "12",//
 224                 "-out",
 225                 "../unassured.crl",//
 226                 "-config",
 227                 "../selfsign.config"
 228
 229         };
 230         Process p1 = Runtime.getRuntime().exec(call, null, new File("keys/unassured.ca"));
 231         if (p1.waitFor() != 0) {
 232             System.out.println("Error while generating crl.");
 233         }
 234     }
 235
 236     private static void signCertificates() throws SQLException {
 237         GigiResultSet rs = readyCerts.executeQuery();
 238
 239         Calendar c = Calendar.getInstance();
 240         c.setTimeZone(TimeZone.getTimeZone("UTC"));
 241         while (rs.next()) {
 242             String csrname = rs.getString("csr_name");
 243             int id = rs.getInt("id");
 244             System.out.println("sign: " + csrname);
 245             try {
 246                 String csrType = rs.getString("csr_type");
 247                 CSRType ct = CSRType.valueOf(csrType);
 248                 File crt = KeyStorage.locateCrt(id);
 249
 250                 Timestamp from = rs.getTimestamp("executeFrom");
 251                 String length = rs.getString("executeTo");
 252                 Date fromDate;
 253                 Date toDate;
 254                 if (from == null) {
 255                     fromDate = new Date(System.currentTimeMillis());
 256                 } else {
 257                     fromDate = new Date(from.getTime());
 258                 }
 259                 if (length.endsWith("m") || length.endsWith("y")) {
 260                     String num = length.substring(0, length.length() - 1);
 261                     int inter = Integer.parseInt(num);
 262                     c.setTime(fromDate);
 263                     if (length.endsWith("m")) {
 264                         c.add(Calendar.MONTH, inter);
 265                     } else {
 266                         c.add(Calendar.YEAR, inter);
 267                     }
 268                     toDate = c.getTime();
 269                 } else {
 270                     toDate = DateSelector.getDateFormat().parse(length);
 271                 }
 272
 273                 getSANSs.setInt(1, id);
 274                 GigiResultSet san = getSANSs.executeQuery();
 275
 276                 LinkedList<SubjectAlternateName> altnames = new LinkedList<>();
 277                 while (san.next()) {
 278                     altnames.add(new SubjectAlternateName(SANType.valueOf(san.getString("type").toUpperCase()), san.getString("contents")));
 279                 }
 280                 // TODO look them up!
 281                 // cfg.println("keyUsage=critical," +
 282                 // "digitalSignature, keyEncipherment, keyAgreement");
 283                 // cfg.println("extendedKeyUsage=critical," + "clientAuth");
 284                 // cfg.close();
 285
 286                 int profile = rs.getInt("profile");
 287                 CertificateProfile cp = CertificateProfile.getById(profile);
 288                 String s = cp.getId() + "";
 289                 while (s.length() < 4) {
 290                     s = "0" + s;
 291                 }
 292                 s += "-" + cp.getKeyName() + ".cfg";
 293                 Properties caP = new Properties();
 294                 try (FileInputStream inStream = new FileInputStream("signer/profiles/" + s)) {
 295                     caP.load(inStream);
 296                 }
 297
 298                 HashMap<String, String> subj = new HashMap<>();
 299                 try (GigiPreparedStatement ps = new GigiPreparedStatement("SELECT name, value FROM `certAvas` WHERE `certId`=?")) {
 300                     ps.setInt(1, rs.getInt("id"));
 301                     GigiResultSet rs2 = ps.executeQuery();
 302                     while (rs2.next()) {
 303                         String name = rs2.getString("name");
 304                         if (name.equals("EMAIL")) {
 305                             name = "emailAddress";
 306                         }
 307                         subj.put(name, rs2.getString("value"));
 308                     }
 309                 }
 310                 if (subj.size() == 0) {
 311                     subj.put("CN", "<empty>");
 312                     System.out.println("WARNING: DN was empty");
 313                 }
 314                 System.out.println(subj);
 315
 316                 PublicKey pk;
 317                 byte[] data = IOUtils.readURL(new FileInputStream(csrname));
 318                 if (ct == CSRType.SPKAC) {
 319                     String dt = new String(data, "UTF-8");
 320                     if (dt.startsWith("SPKAC=")) {
 321                         dt = dt.substring(6);
 322                         data = dt.getBytes("UTF-8");
 323                         System.out.println(dt);
 324                     }
 325                     SPKAC sp = new SPKAC(Base64.getDecoder().decode(data));
 326                     pk = sp.getPubkey();
 327                 } else {
 328                     PKCS10 p10 = new PKCS10(PEM.decode("(NEW )?CERTIFICATE REQUEST", new String(data, "UTF-8")));
 329                     pk = p10.getSubjectPublicKeyInfo();
 330                 }
 331                 Calendar cal = GregorianCalendar.getInstance();
 332                 String ca = caP.getProperty("ca") + "_" + cal.get(Calendar.YEAR) + (cal.get(Calendar.MONTH) >= 6 ? "_2" : "_1");
 333                 File parent = new File("signer/ca");
 334                 File[] caFiles = parent.listFiles();
 335                 if (null == caFiles) {
 336                     caFiles = new File[0];
 337                 }
 338                 if ( !new File(parent, ca).exists()) {
 339                     System.out.println("CA " + ca + " not found. Searching for anything other remotely fitting.");
 340                     for (File f : caFiles) {
 341                         if (f.getName().startsWith(caP.getProperty("ca"))) {
 342                             ca = f.getName();
 343                             break;
 344                         }
 345                     }
 346                 }
 347                 File caKey = new File(parent, ca + "/ca.key");
 348                 PrivateKey i = loadOpensslKey(caKey);
 349
 350                 X509Certificate root = (X509Certificate) CertificateFactory.getInstance("X509").generateCertificate(new FileInputStream("signer/ca/" + ca + "/ca.crt"));
 351                 byte[] cert = generateCert(pk, i, subj, root.getSubjectX500Principal(), altnames, fromDate, toDate, Digest.valueOf(rs.getString("md").toUpperCase()), caP.getProperty("eku"));
 352                 PrintWriter out = new PrintWriter(crt);
 353                 out.println("-----BEGIN CERTIFICATE-----");
 354                 out.println(Base64.getMimeEncoder().encodeToString(cert));
 355                 out.println("-----END CERTIFICATE-----");
 356                 out.close();
 357
 358                 try (InputStream is = new FileInputStream(crt)) {
 359                     locateCA.setString(1, ca);
 360                     GigiResultSet caRs = locateCA.executeQuery();
 361                     if ( !caRs.next()) {
 362                         throw new Error("ca " + ca + " was not found");
 363                     }
 364
 365                     CertificateFactory cf = CertificateFactory.getInstance("X.509");
 366                     X509Certificate crtp = (X509Certificate) cf.generateCertificate(is);
 367                     BigInteger serial = crtp.getSerialNumber();
 368                     updateMail.setString(1, crt.getPath());
 369                     updateMail.setString(2, serial.toString(16));
 370                     updateMail.setInt(3, caRs.getInt("id"));
 371                     updateMail.setInt(4, id);
 372                     updateMail.execute();
 373
 374                     finishJob.setInt(1, rs.getInt("jobid"));
 375                     finishJob.execute();
 376                     System.out.println("signed: " + id);
 377                     continue;
 378                 }
 379
 380             } catch (GeneralSecurityException e) {
 381                 e.printStackTrace();
 382             } catch (IOException e) {
 383                 e.printStackTrace();
 384             } catch (ParseException e) {
 385                 e.printStackTrace();
 386             }
 387             System.out.println("Error with: " + id);
 388             warnMail.setInt(1, rs.getInt("jobid"));
 389             warnMail.execute();
 390
 391         }
 392         rs.close();
 393     }
 394
 395     private static PrivateKey loadOpensslKey(File f) throws FileNotFoundException, IOException, InvalidKeySpecException, NoSuchAlgorithmException {
 396         byte[] p8b = PEM.decode("RSA PRIVATE KEY", new String(IOUtils.readURL(new FileInputStream(f))));
 397         DerOutputStream dos = new DerOutputStream();
 398         dos.putInteger(0);
 399         new AlgorithmId(new ObjectIdentifier(new int[] {
 400                 1, 2, 840, 113549, 1, 1, 1
 401         })).encode(dos);
 402         dos.putOctetString(p8b);
 403         byte[] ctx = dos.toByteArray();
 404         dos.reset();
 405         dos.write(DerValue.tag_Sequence, ctx);
 406         PKCS8EncodedKeySpec p8 = new PKCS8EncodedKeySpec(dos.toByteArray());
 407         PrivateKey i = KeyFactory.getInstance("RSA").generatePrivate(p8);
 408         return i;
 409     }
 410
 411     public static synchronized byte[] generateCert(PublicKey pk, PrivateKey prk, Map<String, String> subj, X500Principal issuer, List<SubjectAlternateName> altnames, Date fromDate, Date toDate, Digest digest, String eku) throws IOException, GeneralSecurityException {
 412         File f = Paths.get("signer", "serial").toFile();
 413         if ( !f.exists()) {
 414             try (FileOutputStream fos = new FileOutputStream(f)) {
 415                 fos.write("1".getBytes("UTF-8"));
 416             }
 417         }
 418         try (FileInputStream fr = new FileInputStream(f)) {
 419             byte[] serial = IOUtils.readURL(fr);
 420             BigInteger ser = new BigInteger(new String(serial).trim());
 421             ser = ser.add(BigInteger.ONE);
 422
 423             PrintWriter pw = new PrintWriter(f);
 424             pw.println(ser);
 425             pw.close();
 426             if (digest != Digest.SHA256 && digest != Digest.SHA512) {
 427                 System.err.println("assuming sha256 either way ;-): " + digest);
 428                 digest = Digest.SHA256;
 429             }
 430             ObjectIdentifier sha512withrsa = new ObjectIdentifier(new int[] {
 431                     1, 2, 840, 113549, 1, 1, digest == Digest.SHA256 ? 11 : 13
 432             });
 433             AlgorithmId aid = new AlgorithmId(sha512withrsa);
 434             Signature s = Signature.getInstance(digest == Digest.SHA256 ? "SHA256withRSA" : "SHA512withRSA");
 435
 436             DerOutputStream cert = new DerOutputStream();
 437             DerOutputStream content = new DerOutputStream();
 438             {
 439                 DerOutputStream version = new DerOutputStream();
 440                 version.putInteger(2); // v3
 441                 content.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte) 0), version);
 442             }
 443             content.putInteger(ser); // Serial
 444             aid.encode(content);
 445
 446             {
 447                 content.write(issuer.getEncoded());
 448             }
 449             {
 450                 DerOutputStream notAround = new DerOutputStream();
 451                 notAround.putUTCTime(fromDate);
 452                 notAround.putUTCTime(toDate);
 453                 content.write(DerValue.tag_Sequence, notAround);
 454             }
 455             {
 456
 457                 X500Name xn = genX500Name(subj);
 458                 content.write(xn.getEncoded());
 459             }
 460             {
 461                 content.write(pk.getEncoded());
 462             }
 463             {
 464                 DerOutputStream extensions = new DerOutputStream();
 465                 {
 466                     addExtension(extensions, new ObjectIdentifier(new int[] {
 467                             2, 5, 29, 17
 468                     }), generateSAN(altnames));
 469                     addExtension(extensions, new ObjectIdentifier(new int[] {
 470                             2, 5, 29, 15
 471                     }), generateKU());
 472                     addExtension(extensions, new ObjectIdentifier(new int[] {
 473                             2, 5, 29, 37
 474                     }), generateEKU(eku));
 475                 }
 476                 DerOutputStream extensionsSeq = new DerOutputStream();
 477                 extensionsSeq.write(DerValue.tag_Sequence, extensions);
 478                 content.write(DerValue.createTag(DerValue.TAG_CONTEXT, true, (byte) 3), extensionsSeq);
 479             }
 480
 481             DerOutputStream contentSeq = new DerOutputStream();
 482
 483             contentSeq.write(DerValue.tag_Sequence, content.toByteArray());
 484
 485             s.initSign(prk);
 486             s.update(contentSeq.toByteArray());
 487
 488             aid.encode(contentSeq);
 489             contentSeq.putBitString(s.sign());
 490             cert.write(DerValue.tag_Sequence, contentSeq);
 491
 492             // X509Certificate c = (X509Certificate)
 493             // CertificateFactory.getInstance("X509").generateCertificate(new
 494             // ByteArrayInputStream(cert.toByteArray()));
 495             // c.verify(pk); only for self-signeds
 496
 497             byte[] res = cert.toByteArray();
 498             cert.close();
 499             return res;
 500         }
 501
 502     }
 503
 504     private static byte[] generateKU() throws IOException {
 505         try (DerOutputStream dos = new DerOutputStream()) {
 506             dos.putBitString(new byte[] {
 507                     (byte) 0b10101000
 508             });
 509             return dos.toByteArray();
 510         }
 511     }
 512
 513     private static byte[] generateEKU(String eku) throws IOException {
 514
 515         try (DerOutputStream dos = new DerOutputStream()) {
 516             for (String name : eku.split(",")) {
 517                 ObjectIdentifier oid;
 518                 switch (name) {
 519                 case "serverAuth":
 520                     oid = new ObjectIdentifier("1.3.6.1.5.5.7.3.1");
 521                     break;
 522                 case "clientAuth":
 523                     oid = new ObjectIdentifier("1.3.6.1.5.5.7.3.2");
 524                     break;
 525                 case "codeSigning":
 526                     oid = new ObjectIdentifier("1.3.6.1.5.5.7.3.3");
 527                     break;
 528                 case "emailProtection":
 529                     oid = new ObjectIdentifier("1.3.6.1.5.5.7.3.4");
 530                     break;
 531                 case "OCSPSigning":
 532                     oid = new ObjectIdentifier("1.3.6.1.5.5.7.3.9");
 533                     break;
 534
 535                 default:
 536                     throw new Error(name);
 537                 }
 538                 dos.putOID(oid);
 539             }
 540             byte[] data = dos.toByteArray();
 541             dos.reset();
 542             dos.write(DerValue.tag_Sequence, data);
 543             return dos.toByteArray();
 544         }
 545     }
 546
 547     public static X500Name genX500Name(Map<String, String> subj) throws IOException {
 548         LinkedList<RDN> rdns = new LinkedList<>();
 549         for (Entry<String, String> i : subj.entrySet()) {
 550             RDN rdn = genRDN(i);
 551             rdns.add(rdn);
 552         }
 553         return new X500Name(rdns.toArray(new RDN[rdns.size()]));
 554     }
 555
 556     private static RDN genRDN(Entry<String, String> i) throws IOException {
 557         DerOutputStream dos = new DerOutputStream();
 558         dos.putUTF8String(i.getValue());
 559         int[] oid;
 560         String key = i.getKey();
 561         switch (key) {
 562         case "CN":
 563             oid = new int[] {
 564                     2, 5, 4, 3
 565             };
 566             break;
 567         case "EMAIL":
 568         case "emailAddress":
 569             oid = new int[] {
 570                     1, 2, 840, 113549, 1, 9, 1
 571             };
 572             break;
 573         case "O":
 574             oid = new int[] {
 575                     2, 5, 4, 10
 576             };
 577             break;
 578         case "OU":
 579             oid = new int[] {
 580                     2, 5, 4, 11
 581             };
 582             break;
 583         case "ST":
 584             oid = new int[] {
 585                     2, 5, 4, 8
 586             };
 587             break;
 588         case "L":
 589             oid = new int[] {
 590                     2, 5, 4, 7
 591             };
 592             break;
 593         case "C":
 594             oid = new int[] {
 595                     2, 5, 4, 6
 596             };
 597             break;
 598         default:
 599             dos.close();
 600             throw new Error("unknown RDN-type: " + key);
 601         }
 602         RDN rdn = new RDN(new AVA(new ObjectIdentifier(oid), new DerValue(dos.toByteArray())));
 603         dos.close();
 604         return rdn;
 605     }
 606
 607     private static void addExtension(DerOutputStream extensions, ObjectIdentifier oid, byte[] extContent) throws IOException {
 608         DerOutputStream SANs = new DerOutputStream();
 609         SANs.putOID(oid);
 610         SANs.putOctetString(extContent);
 611
 612         extensions.write(DerValue.tag_Sequence, SANs);
 613     }
 614
 615     private static byte[] generateSAN(List<SubjectAlternateName> altnames) throws IOException {
 616         DerOutputStream SANContent = new DerOutputStream();
 617         for (SubjectAlternateName san : altnames) {
 618             byte type = 0;
 619             if (san.getType() == SANType.DNS) {
 620                 type = (byte) GeneralNameInterface.NAME_DNS;
 621             } else if (san.getType() == SANType.EMAIL) {
 622                 type = (byte) GeneralNameInterface.NAME_RFC822;
 623             } else {
 624                 SANContent.close();
 625                 throw new Error("" + san.getType());
 626             }
 627             SANContent.write(DerValue.createTag(DerValue.TAG_CONTEXT, false, type), san.getName().getBytes("UTF-8"));
 628         }
 629         DerOutputStream SANSeqContent = new DerOutputStream();
 630         SANSeqContent.write(DerValue.tag_Sequence, SANContent);
 631         byte[] byteArray = SANSeqContent.toByteArray();
 632         SANContent.close();
 633         SANSeqContent.close();
 634         return byteArray;
 635     }
 636 }