NSEC3 support, remove plain opt-in support until private algs work

git-svn-id: https://svn.verisignlabs.com/jdnssec/tools/trunk@35 4cbd57fe-54e5-0310-bd9a-f30fe5ea5e6e

src/com/verisignlabs/dnssec/cl/SignZone.java

@@ -28,13 +28,8 @@ import java.io.PrintWriter;
 import java.security.GeneralSecurityException;
 import java.text.ParseException;
 import java.text.SimpleDateFormat;
-import java.util.ArrayList;
+import java.util.*;
-import java.util.Collections;
+import java.util.logging.Handler;
-import java.util.Date;
-import java.util.Iterator;
-import java.util.List;
-import java.util.ListIterator;
-import java.util.TimeZone;
 import java.util.logging.Logger;
 import java.util.logging.Level;
 
@@ -47,6 +42,7 @@ import org.xbill.DNS.RRset;
 import org.xbill.DNS.Record;
 import org.xbill.DNS.TextParseException;
 import org.xbill.DNS.Type;
+import org.xbill.DNS.utils.base16;
 
 import com.verisignlabs.dnssec.security.BINDKeyUtils;
 import com.verisignlabs.dnssec.security.DnsKeyPair;
@@ -68,8 +64,7 @@ public class SignZone
   private static Logger log;
 
   /**
-   * This is a small inner class used to hold all of the command line option
+   * This is an inner class used to hold all of the command line option state.
-   * state.
    */
   private static class CLIState
   {
@@ -85,9 +80,11 @@ public class SignZone
     public boolean  verifySigs      = false;
     public boolean  selfSignKeys    = true;
     public boolean  useOptIn        = false;
-    public boolean  optInConserve   = false;
     public boolean  fullySignKeyset = false;
     public List     includeNames    = null;
+    public boolean  useNsec3        = false;
+    public byte[]   salt            = null;
+    public int      iterations      = 0;
 
     public CLIState()
     {
@@ -115,23 +112,25 @@ public class SignZone
           case 0 :
             rootLogger.setLevel(Level.OFF);
             break;
-          case 5 :
+          case 4 :
           default :
+            rootLogger.setLevel(Level.INFO);
+            break;
+          case 5 :
             rootLogger.setLevel(Level.FINE);
             break;
           case 6 :
             rootLogger.setLevel(Level.ALL);
             break;
         }
+        Handler[] handlers = rootLogger.getHandlers();
+        for (int i = 0; i < handlers.length; i++)
+          handlers[i].setLevel(rootLogger.getLevel());
       }
 
       if (cli.hasOption('a')) verifySigs = true;
+      if (cli.hasOption('3')) useNsec3 = true;
       if (cli.hasOption('O')) useOptIn = true;
-      if (cli.hasOption('C'))
-      {
-        useOptIn = true;
-        optInConserve = true;
-      }
 
       if (cli.hasOption('F')) fullySignKeyset = true;
 
@@ -185,6 +184,21 @@ public class SignZone
         includeNames = getNameList(includeNamesFile);
       }
 
+      if ((optstr = cli.getOptionValue("salt")) != null)
+      {
+        salt = base16.fromString(optstr);
+      }
+      if ((optstr = cli.getOptionValue("random-salt")) != null)
+      {
+        int length = parseInt(optstr, 0);
+        if (length > 0 && length <= 255)
+        {
+          Random random = new Random();
+          salt = new byte[length];
+          random.nextBytes(salt);
+        }
+      }
+
       String[] files = cli.getArgs();
 
       if (files.length < 2)
@@ -209,73 +223,60 @@ public class SignZone
 
       // boolean options
       opts.addOption("h", "help", false, "Print this message.");
-      opts.addOption("a", false, "verify generated signatures>");
+      opts.addOption("a", "verify", false, "verify generated signatures>");
       opts.addOption("F",
           "fully-sign-keyset",
           false,
-          "sign the zone apex keyset with all "
+          "sign the zone apex keyset with all available keys.");
-              + "available keys, instead of just key-signing-keys.");
-
-      // Opt-In generation switches
-      OptionGroup opt_in_opts = new OptionGroup();
-      opt_in_opts.addOption(new Option("O", "generate a fully Opt-In zone."));
-      opt_in_opts.addOption(new Option("C",
-          "generate a conservative Opt-In zone."));
-      opts.addOptionGroup(opt_in_opts);
 
       // Argument options
-      OptionBuilder.hasOptionalArg();
+      opts.addOption(OptionBuilder.hasOptionalArg().withLongOpt("verbose")
-      OptionBuilder.withLongOpt("verbose");
+          .withArgName("level").withDescription("verbosity level")
-      OptionBuilder.withArgName("level");
+          .create('v'));
-      OptionBuilder.withDescription("verbosity level -- 0 is silence, "
+      opts.addOption(OptionBuilder.hasArg().withArgName("dir")
-          + "5 is debug information, " + "6 is trace information. "
+          .withLongOpt("keyset-directory")
-          + "No argument means 5.");
+          .withDescription("directory to find keyset files (default '.').")
-      opts.addOption(OptionBuilder.create('v'));
+          .create('d'));
+      opts.addOption(OptionBuilder.hasArg().withArgName("dir")
+          .withLongOpt("key-directory")
+          .withDescription("directory to find key files (default '.').")
+          .create('D'));
+      opts.addOption(OptionBuilder.hasArg().withArgName("time/offset")
+          .withLongOpt("start-time")
+          .withDescription("signature starting time "
+              + "(default is now - 1 hour)").create('s'));
+      opts.addOption(OptionBuilder.hasArg().withArgName("time/offset")
+          .withLongOpt("expire-time")
+          .withDescription("signature expiration time "
+              + "(default is start-time + 30 days).").create('e'));
+      opts.addOption(OptionBuilder.hasArg().withArgName("outfile")
+          .withDescription("file the signed zone is written to "
+              + "(default is <origin>.signed).").create('f'));
+      opts.addOption(OptionBuilder.hasArgs().withArgName("KSK file")
+          .withLongOpt("ksk-file").withDescription("this key is a key "
+              + "signing key (may repeat).").create('k'));
+      opts.addOption(OptionBuilder.hasArg().withArgName("file")
+          .withLongOpt("include-file")
+          .withDescription("include names in this "
+              + "file in the NSEC/NSEC3 chain.").create('I'));
 
-      OptionBuilder.hasArg();
+      // NSEC3 options
-      OptionBuilder.withArgName("dir");
+      opts.addOption("3", "use-nsec3", false, "use NSEC3 instead of NSEC");
-      OptionBuilder.withLongOpt("keyset-directory");
+      opts.addOption("O",
-      OptionBuilder.withDescription("directory to find keyset files (default '.').");
+          "use-opt-in",
-      opts.addOption(OptionBuilder.create('d'));
+          false,
+          "generate a fully Opt-In zone.");
 
-      OptionBuilder.hasArg();
+      opts.addOption(OptionBuilder.hasArg().withLongOpt("salt")
-      OptionBuilder.withArgName("dir");
+          .withArgName("hex value").withDescription("supply a salt value.")
-      OptionBuilder.withLongOpt("key-directory");
+          .create());
-      OptionBuilder.withDescription("directory to find key files (default '.').");
+      opts.addOption(OptionBuilder.hasArg().withLongOpt("random-salt")
-      opts.addOption(OptionBuilder.create('D'));
+          .withArgName("length").withDescription("generate a random salt.")
-
+          .create());
-      OptionBuilder.hasArg();
+      opts.addOption(OptionBuilder.hasArg().withLongOpt("iterations")
-      OptionBuilder.withArgName("time/offset");
+          .withArgName("value")
-      OptionBuilder.withLongOpt("start-time");
+          .withDescription("use this value for the iterations in NSEC3.")
-      OptionBuilder.withDescription("signature starting time (default is now - 1 hour)");
+          .create());
-      opts.addOption(OptionBuilder.create('s'));
-
-      OptionBuilder.hasArg();
-      OptionBuilder.withArgName("time/offset");
-      OptionBuilder.withLongOpt("expire-time");
-      OptionBuilder.withDescription("signature expiration time (default is "
-          + "start-time + 30 days");
-      opts.addOption(OptionBuilder.create('e'));
-
-      OptionBuilder.hasArg();
-      OptionBuilder.withArgName("outfile");
-      OptionBuilder.withDescription("file the signed zone is written "
-          + "to (default is <origin>.signed).");
-      opts.addOption(OptionBuilder.create('f'));
-
-      OptionBuilder.hasArgs();
-      OptionBuilder.withArgName("KSK file");
-      OptionBuilder.withLongOpt("ksk-file");
-      OptionBuilder.withDescription("this key is a key signing key "
-          + "(may repeat)");
-      opts.addOption(OptionBuilder.create('k'));
-
-      OptionBuilder.hasArg();
-      OptionBuilder.withArgName("file");
-      OptionBuilder.withLongOpt("include-file");
-      OptionBuilder.withDescription("include names in this file "
-          + "in the NSEC chain");
-      opts.addOption(OptionBuilder.create('I'));
     }
 
     /** Print out the usage and help statements, then quit. */
@@ -286,7 +287,8 @@ public class SignZone
       PrintWriter out = new PrintWriter(System.err);
 
       // print our own usage statement:
-      out.println("usage: signZone.sh [..options..] zone_file [key_file ...] ");
+      out.println("usage: signZone.sh [..options..] "
+          + "zone_file [key_file ...] ");
       f.printHelp(out,
           75,
           "signZone.sh",
@@ -572,10 +574,8 @@ public class SignZone
       toList.add(i.next());
     }
 
-    int type = SignUtils.recordSecType(zonename,
+    int type = SignUtils.recordSecType(zonename, rrset.getName(), rrset
-        rrset.getName(),
+        .getType(), last_cut);
-        rrset.getType(),
-        last_cut);
 
     // we don't sign non-normal sets (delegations, glue, invalid).
     // we also don't sign the zone key set unless we've been asked.
@@ -595,7 +595,8 @@ public class SignZone
       // otherwise we will just sign them with the zonesigning keys.
       if (keysigningkeypairs != null && keysigningkeypairs.size() > 0)
       {
-        List sigs = signer.signRRset(rrset, keysigningkeypairs, start, expire);
+        List sigs = signer
+            .signRRset(rrset, keysigningkeypairs, start, expire);
         toList.addAll(sigs);
 
         // If we aren't going to sign with all the keys, bail out now.
@@ -639,13 +640,13 @@ public class SignZone
    */
   private static List signZone(JCEDnsSecSigner signer, Name zonename,
       List records, List keysigningkeypairs, List zonekeypairs, Date start,
-      Date expire, boolean useOptIn, boolean useConservativeOptIn,
+      Date expire, boolean fullySignKeyset)
-      boolean fullySignKeyset, List NSECIncludeNames) throws IOException,
+      throws IOException, GeneralSecurityException
-      GeneralSecurityException
   {
 
-    // Remove any existing DNSSEC records (NSEC, RRSIG)
+    // Remove any existing DNSSEC records (NSEC, NSEC3, RRSIG)
     SignUtils.removeGeneratedRecords(zonename, records);
+
     // Sort the zone
     Collections.sort(records, new RecordComparator());
 
@@ -655,18 +656,8 @@ public class SignZone
     // Generate DS records
     SignUtils.generateDSRecords(zonename, records);
 
-    // Generate NXT records
+    // Generate the NSEC records
-    if (useOptIn)
-    {
-      SignUtils.generateOptInNSECRecords(zonename,
-          records,
-          NSECIncludeNames,
-          useConservativeOptIn);
-    }
-    else
-    {
     SignUtils.generateNSECRecords(zonename, records);
-    }
 
     // Assemble into RRsets and sign.
     RRset rrset = new RRset();
@@ -678,7 +669,102 @@ public class SignZone
       Record r = (Record) i.next();
 
       // First record
-      if (rrset.getName() == null)
+      if (rrset.size() == 0)
+      {
+        rrset.addRR(r);
+        continue;
+      }
+
+      // Current record is part of the current RRset.
+      if (rrset.getName().equals(r.getName())
+          && rrset.getDClass() == r.getDClass()
+          && rrset.getType() == r.getType())
+      {
+        rrset.addRR(r);
+        continue;
+      }
+
+      // Otherwise, we have completed the RRset
+      // Sign the records
+
+      // add the RRset to the list of signed_records, regardless of
+      // whether or not we actually end up signing the set.
+      last_cut = addRRset(signer,
+          signed_records,
+          zonename,
+          rrset,
+          keysigningkeypairs,
+          zonekeypairs,
+          start,
+          expire,
+          fullySignKeyset,
+          last_cut);
+
+      rrset.clear();
+      rrset.addRR(r);
+    }
+
+    // add the last RR set
+    addRRset(signer,
+        signed_records,
+        zonename,
+        rrset,
+        keysigningkeypairs,
+        zonekeypairs,
+        start,
+        expire,
+        fullySignKeyset,
+        last_cut);
+
+    return signed_records;
+  }
+
+  private static List signZoneNSEC3(JCEDnsSecSigner signer, Name zonename,
+      List records, List keysigningkeypairs, List zonekeypairs, Date start,
+      Date expire, boolean fullySignKeyset, boolean useOptIn,
+      List includedNames, byte[] salt, int iterations)
+      throws IOException, GeneralSecurityException
+  {
+    // Remove any existing DNSSEC records (NSEC, NSEC3, RRSIG)
+    SignUtils.removeGeneratedRecords(zonename, records);
+
+    // Sort the zone
+    Collections.sort(records, new RecordComparator());
+
+    // Remove duplicate records
+    SignUtils.removeDuplicateRecords(records);
+
+    // Generate DS records
+    SignUtils.generateDSRecords(zonename, records);
+
+    // Generate NSEC3 records
+    if (useOptIn)
+    {
+      SignUtils.generateOptInNSEC3Records(zonename,
+          records,
+          includedNames,
+          salt,
+          iterations);
+    }
+    else
+    {
+      SignUtils.generateNSEC3Records(zonename, records, salt, iterations);
+    }
+
+    // Re-sort so we can assemble into rrsets.
+    Collections.sort(records, new RecordComparator());
+
+    // Assemble into RRsets and sign.
+    RRset rrset = new RRset();
+    ArrayList signed_records = new ArrayList();
+    Name last_cut = null;
+
+    for (ListIterator i = records.listIterator(); i.hasNext();)
+    {
+      Record r = (Record) i.next();
+
+      // First record
+      if (rrset.size() == 0)
       {
         rrset.addRR(r);
         continue;
@@ -823,17 +909,34 @@ public class SignZone
     JCEDnsSecSigner signer = new JCEDnsSecSigner();
 
     // Sign the zone.
-    List signed_records = signZone(signer,
+    List signed_records;
+
+    if (state.useNsec3)
+    {
+      signed_records = signZoneNSEC3(signer,
           zonename,
           records,
           kskpairs,
           keypairs,
           state.start,
           state.expire,
-        state.useOptIn,
-        state.optInConserve,
           state.fullySignKeyset,
-        state.includeNames);
+          state.useOptIn,
+          state.includeNames,
+          state.salt,
+          state.iterations);
+    }
+    else
+    {
+      signed_records = signZone(signer,
+          zonename,
+          records,
+          kskpairs,
+          keypairs,
+          state.start,
+          state.expire,
+          state.fullySignKeyset);
+    }
 
     // write out the signed zone
     // force multiline mode for now

src/com/verisignlabs/dnssec/security/ProtoNSEC3.java

@@ -0,0 +1,245 @@
+/*
+ * $Id$
+ * 
+ * Copyright (c) 2005 VeriSign. All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * 
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer. 2. Redistributions in
+ * binary form must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other
+ * materials provided with the distribution. 3. The name of the author may not
+ * be used to endorse or promote products derived from this software without
+ * specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
+ * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+ * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *  
+ */
+
+package com.verisignlabs.dnssec.security;
+
+import org.xbill.DNS.*;
+import org.xbill.DNS.utils.base16;
+import org.xbill.DNS.utils.base32;
+
+public class ProtoNSEC3
+{
+  private boolean optInFlag;
+  private byte    hashAlg;
+  private int     iterations;
+  private byte[]  salt;
+  private byte[]  next;
+  private byte[]  owner;     // cached numerical owner value.
+  private TypeMap typemap;
+  private Name    zone;
+  private Name    name;
+  private int     dclass;
+  private long    ttl;
+
+  /**
+   * Creates an NSEC3 Record from the given data.
+   * 
+   * @param next The following name in an ordered list of the zone
+   * @param types An array containing the types present.
+   */
+  public ProtoNSEC3(byte[] owner, Name zone, int dclass, long ttl,
+      boolean optInFlag, byte hashAlg, int iterations, byte[] salt,
+      byte[] next, TypeMap typemap)
+  {
+    this.zone = zone;
+    this.owner = owner;
+    this.dclass = dclass;
+    this.ttl = ttl;
+    this.optInFlag = optInFlag;
+    this.hashAlg = hashAlg;
+    this.iterations = iterations;
+    this.salt = salt;
+    this.next = next;
+    this.typemap = typemap;
+  }
+
+  public ProtoNSEC3(byte[] owner, Name zone, int dclass, long ttl,
+      boolean optInFlag, byte hashAlg, int iterations, byte[] salt,
+      byte[] next, int[] types)
+  {
+    this(owner, zone, dclass, ttl, optInFlag, hashAlg, iterations, salt,
+        next, TypeMap.fromTypes(types));
+  }
+
+  private String hashToString(byte[] hash)
+  {
+    if (hash == null) return null;
+    return base32.toString(hash).toLowerCase();
+  }
+
+  public Name getName()
+  {
+    if (name == null)
+    {
+      try
+      {
+        name = new Name(hashToString(owner), zone);
+      }
+      catch (TextParseException e)
+      {
+        // This isn't going to happen.
+      }
+    }
+
+    return name;
+  }
+
+  public byte[] getNext()
+  {
+    return next;
+  }
+
+  public void setNext(byte[] next)
+  {
+    this.next = next;
+  }
+
+  public boolean getOptInFlag()
+  {
+    return optInFlag;
+  }
+
+  public void setOptInFlag(boolean optInFlag)
+  {
+    this.optInFlag = optInFlag;
+  }
+
+  public long getTTL()
+  {
+    return ttl;
+  }
+
+  public void setTTL(long ttl)
+  {
+    this.ttl = ttl;
+  }
+
+  public TypeMap getTypemap()
+  {
+    return typemap;
+  }
+
+  public int[] getTypes()
+  {
+    return typemap.getTypes();
+  }
+
+  public void setTypemap(TypeMap typemap)
+  {
+    this.typemap = typemap;
+  }
+
+  public int getDClass()
+  {
+    return dclass;
+  }
+
+  public byte getHashAlgorithm()
+  {
+    return hashAlg;
+  }
+
+  public int getIterations()
+  {
+    return iterations;
+  }
+
+  public byte[] getOwner()
+  {
+    return owner;
+  }
+
+  public byte[] getSalt()
+  {
+    return salt;
+  }
+
+  public Name getZone()
+  {
+    return zone;
+  }
+
+  public NSEC3Record getNSEC3Record()
+  {
+    return new NSEC3Record(getName(), dclass, ttl, optInFlag, hashAlg,
+        iterations, salt, next, getTypes());
+  }
+
+  public void mergeTypes(TypeMap new_types)
+  {
+    int[] nt = new_types.getTypes();
+    for (int i = 0; i < nt.length; i++)
+    {
+      if (!typemap.get(nt[i])) typemap.set(nt[i]);
+    }
+  }
+  
+  public int compareTo(ProtoNSEC3 o)
+  {
+    if (o == null) return 1;
+    byte[] o_owner = o.getOwner();
+    int len = owner.length < o_owner.length ? o_owner.length : owner.length;
+    for (int i = 0; i < len; i++)
+    {
+      int d = (owner[i] - o_owner[i]);
+      if (d != 0) return d;
+    }
+    return owner.length - o_owner.length;
+  }
+
+  public String toString()
+  {
+    StringBuffer sb = new StringBuffer();
+    sb.append(getName());
+    sb.append(' ');
+    sb.append(ttl);
+    sb.append(' ');
+    sb.append(DClass.string(dclass));
+    sb.append(" NSEC3 ");
+    sb.append(optInFlag ? '1' : '0');
+    sb.append(' ');
+    sb.append(hashAlg);
+    sb.append(' ');
+    sb.append(iterations);
+    sb.append(' ');
+    sb.append(salt == null ? "-" : base16.toString(salt));
+    sb.append(' ');
+    String nextstr = (next == null) ? "(null)" : base32.toString(next)
+        .toLowerCase();
+    sb.append(nextstr);
+
+    int[] types = getTypes();
+    for (int i = 0; i < types.length; i++)
+    {
+      sb.append(" ");
+      sb.append(Type.string(types[i]));
+    }
+    return sb.toString();
+  }
+  
+  public static class Comparator implements java.util.Comparator
+  {
+
+    public int compare(Object o1, Object o2)
+    {
+      return ((ProtoNSEC3) o1).compareTo((ProtoNSEC3) o2);
+    }
+    
+  }
+}

src/com/verisignlabs/dnssec/security/SignUtils.java

@@ -31,7 +31,6 @@ import java.util.logging.Logger;
 import org.xbill.DNS.*;
 import org.xbill.DNS.utils.base64;
 
-
 /**
  * This class contains a bunch of utility methods that are generally useful in
  * signing zones.
@@ -50,6 +49,7 @@ public class SignUtils
   public static final int    RR_DELEGATION   = 1;
   public static final int    RR_GLUE         = 2;
   public static final int    RR_INVALID      = 3;
+  private static final int[] ENT_NSEC3_TYPES = {Type.RRSIG, Type.NSEC3};
 
   private static Logger      log;
 
@@ -78,9 +78,9 @@ public class SignUtils
   public static RRSIGRecord generatePreRRSIG(RRset rrset, DNSKEYRecord key,
       Date start, Date expire, long sig_ttl)
   {
-    return new RRSIGRecord(rrset.getName(), rrset.getDClass(), sig_ttl,
+    return new RRSIGRecord(rrset.getName(), rrset.getDClass(), sig_ttl, rrset
-        rrset.getType(), key.getAlgorithm(), (int) rrset.getTTL(), expire,
+        .getType(), key.getAlgorithm(), (int) rrset.getTTL(), expire, start,
-        start, key.getFootprint(), key.getName(), null);
+        key.getFootprint(), key.getName(), null);
   }
 
   /**
@@ -97,9 +97,9 @@ public class SignUtils
   public static RRSIGRecord generatePreRRSIG(Record rec, DNSKEYRecord key,
       Date start, Date expire, long sig_ttl)
   {
-    return new RRSIGRecord(rec.getName(), rec.getDClass(), sig_ttl,
+    return new RRSIGRecord(rec.getName(), rec.getDClass(), sig_ttl, rec
-        rec.getType(), key.getAlgorithm(), rec.getTTL(), expire, start,
+        .getType(), key.getAlgorithm(), rec.getTTL(), expire, start, key
-        key.getFootprint(), key.getName(), null);
+        .getFootprint(), key.getName(), null);
   }
 
   /**
@@ -229,10 +229,10 @@ public class SignUtils
    */
   public static RRSIGRecord generateRRSIG(byte[] signature, RRSIGRecord presig)
   {
-    return new RRSIGRecord(presig.getName(), presig.getDClass(),
+    return new RRSIGRecord(presig.getName(), presig.getDClass(), presig
-        presig.getTTL(), presig.getTypeCovered(), presig.getAlgorithm(),
+        .getTTL(), presig.getTypeCovered(), presig.getAlgorithm(), presig
-        presig.getOrigTTL(), presig.getExpire(), presig.getTimeSigned(),
+        .getOrigTTL(), presig.getExpire(), presig.getTimeSigned(), presig
-        presig.getFootprint(), presig.getSigner(), signature);
+        .getFootprint(), presig.getSigner(), signature);
   }
 
   /**
@@ -479,7 +479,8 @@ public class SignUtils
       // Current record is part of the current RRset.
       if (rrset.getName().equals(r.getName())
           && rrset.getDClass() == r.getDClass()
-          && ((r.getType() == Type.RRSIG && rrset.getType() == ((RRSIGRecord) r).getTypeCovered()) || rrset.getType() == r.getType()))
+          && ((r.getType() == Type.RRSIG && rrset.getType() == ((RRSIGRecord) r)
+              .getTypeCovered()) || rrset.getType() == r.getType()))
       {
         rrset.addRR(r);
         continue;
@@ -650,11 +651,281 @@ public class SignUtils
     log.finer("Generated: " + nsec);
   }
 
+  public static void generateNSEC3Records(Name zonename, List records,
+      byte[] salt, int iterations) throws NoSuchAlgorithmException
+  {
+    List proto_nsec3s = new ArrayList();
+    NodeInfo current_node = null;
+    NodeInfo last_node = null;
+    // For detecting glue.
+    Name last_cut = null;
+
+    for (Iterator i = records.iterator(); i.hasNext();)
+    {
+      Record r = (Record) i.next();
+      Name r_name = r.getName();
+      int r_type = r.getType();
+
+      // Classify this record so we know if we can skip it.
+      int r_sectype = recordSecType(zonename, r_name, r_type, last_cut);
+
+      // skip irrelevant records
+      if (r_sectype == RR_INVALID || r_sectype == RR_GLUE) continue;
+
+      // note our last delegation point so we can recognize glue.
+      if (r_sectype == RR_DELEGATION) last_cut = r_name;
+
+      // For the first iteration, we create our current node.
+      if (current_node == null)
+      {
+        current_node = new NodeInfo(r);
+        continue;
+      }
+
+      // If we are at the same name, we are on the same node.
+      if (r_name.equals(current_node.name))
+      {
+        current_node.addType(r_type);
+        continue;
+      }
+
+      // At this point, r represents the start of a new node.
+      // So we move current_node to last_node and generate a new current node.
+      // But first, we need to do something with the last node.
+      generateNSEC3ForNode(last_node,
+          zonename,
+          salt,
+          iterations,
+          false,
+          proto_nsec3s);
+
+      last_node = current_node;
+      current_node = new NodeInfo(r);
+    }
+
+    // process last two nodes.
+    generateNSEC3ForNode(last_node,
+        zonename,
+        salt,
+        iterations,
+        false,
+        proto_nsec3s);
+    generateNSEC3ForNode(current_node,
+        zonename,
+        salt,
+        iterations,
+        false,
+        proto_nsec3s);
+
+    List nsec3s = finishNSEC3s(proto_nsec3s);
+    records.addAll(nsec3s);
+  }
+
+  public static void generateOptInNSEC3Records(Name zonename, List records,
+      List includedNames, byte[] salt, int iterations)
+      throws NoSuchAlgorithmException
+  {
+    List proto_nsec3s = new ArrayList();
+    NodeInfo current_node = null;
+    NodeInfo last_node = null;
+    // For detecting glue.
+    Name last_cut = null;
+
+    HashSet includeSet = null;
+    if (includedNames != null)
+    {
+      includeSet = new HashSet(includedNames);
+    }
+
+    for (Iterator i = records.iterator(); i.hasNext();)
+    {
+      Record r = (Record) i.next();
+      Name r_name = r.getName();
+      int r_type = r.getType();
+
+      // Classify this record so we know if we can skip it.
+      int r_sectype = recordSecType(zonename, r_name, r_type, last_cut);
+
+      // skip irrelevant records
+      if (r_sectype == RR_INVALID || r_sectype == RR_GLUE) continue;
+
+      // note our last delegation point so we can recognize glue.
+      if (r_sectype == RR_DELEGATION) last_cut = r_name;
+
+      // For the first iteration, we create our current node.
+      if (current_node == null)
+      {
+        current_node = new NodeInfo(r);
+        continue;
+      }
+
+      // If we are at the same name, we are on the same node.
+      if (r_name.equals(current_node.name))
+      {
+        current_node.addType(r_type);
+        continue;
+      }
+
+      if (includeSet != null && includeSet.contains(current_node.name))
+      {
+        current_node.isSecureNode = true;
+      }
+
+      // At this point, r represents the start of a new node.
+      // So we move current_node to last_node and generate a new current node.
+      // But first, we need to do something with the last node.
+      generateNSEC3ForNode(last_node,
+          zonename,
+          salt,
+          iterations,
+          true,
+          proto_nsec3s);
+
+      if (current_node.isSecureNode)
+      {
+        last_node = current_node;
+      }
+      else
+      {
+        last_node.hasOptInSpan = true;
+      }
+
+      current_node = new NodeInfo(r);
+    }
+
+    // process last two nodes.
+    generateNSEC3ForNode(last_node,
+        zonename,
+        salt,
+        iterations,
+        true,
+        proto_nsec3s);
+    generateNSEC3ForNode(current_node,
+        zonename,
+        salt,
+        iterations,
+        true,
+        proto_nsec3s);
+
+    List nsec3s = finishNSEC3s(proto_nsec3s);
+    records.addAll(nsec3s);
+  }
+
+  private static void generateNSEC3ForNode(NodeInfo node, Name zonename,
+      byte[] salt, int iterations, boolean optIn, List nsec3s)
+      throws NoSuchAlgorithmException
+  {
+    if (node == null) return;
+    if (optIn && !node.isSecureNode) return;
+
+    // Add our default types.
+    node.addType(Type.RRSIG);
+    node.addType(Type.NSEC3);
+
+    // Check for ENTs -- note this will generate duplicate ENTs because it
+    // doesn't use any context.
+    int ldiff = node.name.labels() - zonename.labels();
+    for (int i = 1; i < ldiff; i++)
+    {
+      Name n = new Name(node.name, i);
+      log.info("Generating ENT NSEC3 for " + n);
+      ProtoNSEC3 nsec3 = generateNSEC3(n,
+          zonename,
+          node.ttl,
+          salt,
+          iterations,
+          optIn,
+          null);
+      nsec3s.add(nsec3);
+    }
+
+    ProtoNSEC3 nsec3 = generateNSEC3(node.name,
+        zonename,
+        node.ttl,
+        salt,
+        iterations,
+        optIn,
+        node.getTypes());
+    nsec3s.add(nsec3);
+  }
+
+  private static ProtoNSEC3 generateNSEC3(Name name, Name zonename, long ttl,
+      byte[] salt, int iterations, boolean optIn, int[] types)
+      throws NoSuchAlgorithmException
+  {
+    byte[] hash = NSEC3Record.hash(name,
+        NSEC3Record.SHA1_DIGEST_ID,
+        iterations,
+        salt);
+
+    if (types == null)
+    {
+      types = ENT_NSEC3_TYPES;
+    }
+    ProtoNSEC3 r = new ProtoNSEC3(hash, zonename, DClass.IN, ttl, optIn,
+        NSEC3Record.SHA1_DIGEST_ID, iterations, salt, null, types);
+
+    log.finer("Generated: " + r);
+    return r;
+  }
+
+  private static List finishNSEC3s(List nsec3s)
+  {
+    if (nsec3s == null) return null;
+    Collections.sort(nsec3s, new ProtoNSEC3.Comparator());
+
+    ProtoNSEC3 prev_nsec3 = null;
+    ProtoNSEC3 cur_nsec3 = null;
+    byte[] first_nsec3_hash = null;
+
+    for (ListIterator i = nsec3s.listIterator(); i.hasNext();)
+    {
+      cur_nsec3 = (ProtoNSEC3) i.next();
+
+      // log.fine("finishNSEC3s: processing " + cur_nsec3);
+      // check to see if cur is a duplicate (by name)
+      if (prev_nsec3 != null
+          && Arrays.equals(prev_nsec3.getOwner(), cur_nsec3.getOwner()))
+      {
+        log.fine("found duplicate NSEC3 (by name) -- merging type maps: "
+            + prev_nsec3.getTypemap() + " and " + cur_nsec3.getTypemap());
+        i.remove();
+        prev_nsec3.mergeTypes(cur_nsec3.getTypemap());
+        log.fine("merged type map: " + prev_nsec3.getTypemap());
+        continue;
+      }
+
+      byte[] next = cur_nsec3.getOwner();
+
+      if (prev_nsec3 == null)
+      {
+        prev_nsec3 = cur_nsec3;
+        first_nsec3_hash = next;
+        continue;
+      }
+
+      prev_nsec3.setNext(next);
+      prev_nsec3 = cur_nsec3;
+    }
+
+    // Handle last NSEC3.
+    cur_nsec3.setNext(first_nsec3_hash);
+
+    List res = new ArrayList(nsec3s.size());
+    for (Iterator i = nsec3s.iterator(); i.hasNext();)
+    {
+      ProtoNSEC3 p = (ProtoNSEC3) i.next();
+      res.add(p.getNSEC3Record());
+    }
+
+    return res;
+  }
+
   /**
    * Given a canonical (by name) ordered list of records in a zone, generate
-   * the NXT records in place.
+   * the NSEC records in place.
    * 
-   * Note thatthe list that the records are stored in must support the
+   * Note that the list that the records are stored in must support the
    * <code>listIterator.add</code> operation.
    * 
    * @param zonename the name of the zone apex, used to distinguish between
@@ -838,7 +1109,8 @@ public class SignUtils
     {
       Record r = (Record) i.next();
 
-      if (r.getType() == Type.RRSIG || r.getType() == Type.NSEC)
+      if (r.getType() == Type.RRSIG || r.getType() == Type.NSEC
+          || r.getType() == Type.NSEC3)
       {
         i.remove();
       }
@@ -898,9 +1170,9 @@ public class SignUtils
 
       byte[] digest = md.digest(os.toByteArray());
 
-      return new DSRecord(keyrec.getName(), keyrec.getDClass(), ttl,
+      return new DSRecord(keyrec.getName(), keyrec.getDClass(), ttl, keyrec
-          keyrec.getFootprint(), keyrec.getAlgorithm(),
+          .getFootprint(), keyrec.getAlgorithm(), DSRecord.SHA1_DIGEST_ID,
-          DSRecord.SHA1_DIGEST_ID, digest);
+          digest);
 
     }
     catch (NoSuchAlgorithmException e)