org.xbill.DNS

Class NSEC3Record

java.lang.Object

org.xbill.DNS.Record

org.xbill.DNS.NSEC3Record

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, java.lang.Comparable

public class NSEC3Record
extends Record

Next SECure name 3 - this record contains the next hashed name in an ordered list of hashed names in the zone, and a set of types for which records exist for this name. The presence of this record in a response signifies a negative response from a DNSSEC-signed zone. This replaces the NSEC and NXT records, when used.

Author:

Brian Wellington, David Blacka

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	NSEC3Record.Digest
static class	NSEC3Record.Flags

Field Summary

Fields

Modifier and Type	Field and Description
static int	SHA1_DIGEST_ID

Fields inherited from class org.xbill.DNS.Record

dclass, name, ttl, type

Constructor Summary

Constructors

Constructor and Description
NSEC3Record(Name name, int dclass, long ttl, int hashAlg, int flags, int iterations, byte[] salt, byte[] next, int[] types) Creates an NSEC3 record from the given data.

Method Summary

Modifier and Type	Method and Description
int	getFlags() Returns the flags
int	getHashAlgorithm() Returns the hash algorithm
int	getIterations() Returns the number of iterations
byte[]	getNext() Returns the next hash
byte[]	getSalt() Returns the salt
int[]	getTypes() Returns the set of types defined for this name
byte[]	hashName(Name name) Hashes a name with the parameters of this NSEC3 record.
boolean	hasType(int type) Returns whether a specific type is in the set of types.

Methods inherited from class org.xbill.DNS.Record

byteArrayFromString, byteArrayToString, compareTo, equals, fromString, fromString, fromWire, getAdditionalName, getDClass, getName, getRRsetType, getTTL, getType, hashCode, newRecord, newRecord, newRecord, newRecord, rdataToString, rdataToWireCanonical, sameRRset, toString, toWire, toWireCanonical, unknownToString, withName

Methods inherited from class java.lang.Object

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

Field Detail

SHA1_DIGEST_ID

public static final int SHA1_DIGEST_ID

See Also:

Constant Field Values

Constructor Detail

NSEC3Record

public NSEC3Record(Name name,
                   int dclass,
                   long ttl,
                   int hashAlg,
                   int flags,
                   int iterations,
                   byte[] salt,
                   byte[] next,
                   int[] types)

Creates an NSEC3 record from the given data.

Parameters:

name - The ownername of the NSEC3 record (base32'd hash plus zonename).

dclass - The class.

ttl - The TTL.

hashAlg - The hash algorithm.

flags - The value of the flags field.

iterations - The number of hash iterations.

salt - The salt to use (may be null).

next - The next hash (may not be null).

types - The types present at the original ownername.

Method Detail

getHashAlgorithm

public int getHashAlgorithm()

Returns the hash algorithm

getFlags

public int getFlags()

Returns the flags

getIterations

public int getIterations()

Returns the number of iterations

getSalt

public byte[] getSalt()

Returns the salt

getNext

public byte[] getNext()

Returns the next hash

getTypes

public int[] getTypes()

Returns the set of types defined for this name

hasType

public boolean hasType(int type)

Returns whether a specific type is in the set of types.

hashName

public byte[] hashName(Name name)
                throws java.security.NoSuchAlgorithmException

Hashes a name with the parameters of this NSEC3 record.

Parameters:

name - The name to hash

Returns:

The hashed version of the name

Throws:

java.security.NoSuchAlgorithmException - The hash algorithm is unknown.