org.minidns.record

Class NSEC3

java.lang.Object

org.minidns.record.Data

org.minidns.record.NSEC3

public class NSEC3
extends Data

DNS NSEC3 (Next Secure 3) record payload for DNSSEC.
Provides authenticated denial of existence with hashed names to prevent zone enumeration attacks.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	NSEC3.HashAlgorithm DNSSEC NSEC3 Hash Algorithms.

Field Summary

Fields

Modifier and Type	Field and Description
static byte	FLAG_OPT_OUT This Flag indicates whether this NSEC3 RR may cover unsigned delegations.
byte	flags Bitmap of flags: FLAG_OPT_OUT.
NSEC3.HashAlgorithm	hashAlgorithm The cryptographic hash algorithm used.
byte	hashAlgorithmByte The byte value of the cryptographic hash algorithm used.
int	iterations The number of iterations the hash algorithm is applied.
List<Record.TYPE>	types The RR types existing at the original owner name.

Constructor Summary

Constructors

Constructor and Description
NSEC3(byte hashAlgorithm, byte flags, int iterations, byte[] salt, byte[] nextHashed, List<Record.TYPE> types)
NSEC3(byte hashAlgorithm, byte flags, int iterations, byte[] salt, byte[] nextHashed, Record.TYPE... types)

Method Summary

Modifier and Type	Method and Description
void	copySaltInto(byte[] dest, int destPos)
byte[]	getNextHashed()
String	getNextHashedBase32()
DnsLabel	getNextHashedDnsLabel()
byte[]	getSalt()
int	getSaltLength()
Record.TYPE	getType() The payload type.
static NSEC3	parse(DataInputStream dis, int length)
void	serialize(DataOutputStream dos) The internal method used to serialize Data subclasses.
String	toString()

Methods inherited from class org.minidns.record.Data

equals, hashCode, length, toByteArray, toOutputStream, toOutputStream

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

FLAG_OPT_OUT

public static final byte FLAG_OPT_OUT

This Flag indicates whether this NSEC3 RR may cover unsigned delegations.

See Also:

Constant Field Values

flags

public final byte flags

Bitmap of flags: FLAG_OPT_OUT.

hashAlgorithm

public final NSEC3.HashAlgorithm hashAlgorithm

The cryptographic hash algorithm used. If MiniDNS isn't aware of the hash algorithm, then this field will be null.

See Also:

hashAlgorithmByte

hashAlgorithmByte

public final byte hashAlgorithmByte

The byte value of the cryptographic hash algorithm used.

iterations

public final int iterations

The number of iterations the hash algorithm is applied.

types

public final List<Record.TYPE> types

The RR types existing at the original owner name.

Constructor Detail

NSEC3

public NSEC3(byte hashAlgorithm,
             byte flags,
             int iterations,
             byte[] salt,
             byte[] nextHashed,
             List<Record.TYPE> types)

NSEC3

public NSEC3(byte hashAlgorithm,
             byte flags,
             int iterations,
             byte[] salt,
             byte[] nextHashed,
             Record.TYPE... types)

Method Detail

copySaltInto

public void copySaltInto(byte[] dest,
                         int destPos)

getNextHashed

public byte[] getNextHashed()

getNextHashedBase32

public String getNextHashedBase32()

getNextHashedDnsLabel

public DnsLabel getNextHashedDnsLabel()

getSalt

public byte[] getSalt()

getSaltLength

public int getSaltLength()

getType

public Record.TYPE getType()

Description copied from class: Data

The payload type.

Specified by:

getType in class Data

Returns:

The payload type.

parse

public static NSEC3 parse(DataInputStream dis,
                          int length)
                   throws IOException

Throws:

IOException

serialize

public void serialize(DataOutputStream dos)
               throws IOException

Description copied from class: Data

The internal method used to serialize Data subclasses.

Specified by:

serialize in class Data

Parameters:

dos - the output stream to serialize to.

Throws:

IOException - if an I/O error occurs.

toString

public String toString()

Overrides:

toString in class Object