Class NSEC3Record

Authenticated denial of existence for DNS Resource Record Sets.

Inheritance
Object
DnsObject
ResourceRecord
NSEC3Record
Inherited Members
Namespace: Makaretu.Dns
Assembly: Makaretu.Dns.dll
Syntax
public class NSEC3Record : ResourceRecord, IWireSerialiser, ICloneable, IPresentationSerialiser
Remarks

Defined by RFC 5155 - DNS Security (DNSSEC) Hashed Authenticated Denial of Existence.

Constructors

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NSEC3Record()

Creates a new instance of the NSEC3Record class.

Declaration
public NSEC3Record()

Properties

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Flags

Indicates different processing.

Declaration
public NSEC3Flags Flags { get; set; }
Property Value
Type Description
NSEC3Flags
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HashAlgorithm

The cryptographic hash algorithm used to create the NextHashedOwnerName.

Declaration
public DigestType HashAlgorithm { get; set; }
Property Value
Type Description
DigestType

One of the DigestType value.
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Iterations

Number of times to perform the HashAlgorithm.

Declaration
public ushort Iterations { get; set; }
Property Value
Type Description
UInt16
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NextHashedOwnerName

The next hashed owner name that has authoritative data.

Declaration
public byte[] NextHashedOwnerName { get; set; }
Property Value
Type Description
Byte[]
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Salt

Appended to the original owner name before hashing.

Declaration
public byte[] Salt { get; set; }
Property Value
Type Description
Byte[]
Remarks

Used to defend against pre-calculated dictionary attacks.

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Types

The sequence of RR types present at the NSEC3 RR's owner name.

Declaration
public List<DnsType> Types { get; set; }
Property Value
Type Description
List<DnsType>

Defaults to the empty list.

Methods

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ReadData(PresentationReader)

Read the textual representation of the data that is specific to the resource record Type.

Declaration
public override void ReadData(PresentationReader reader)
Parameters
Type Name Description
PresentationReader reader

The source of the resource record's data.
Overrides
Remarks

Derived classes must implement this method.

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ReadData(WireReader, Int32)

Read the data that is specific to the resource record Type.

Declaration
public override void ReadData(WireReader reader, int length)
Parameters
Type Name Description
WireReader reader

The source of the resource record's data.
Int32 length

The length, in bytes, of the data.
Overrides
Remarks

Derived classes must implement this method.

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WriteData(PresentationWriter)

Write the textual representation of the data that is specific to the resource record.

Declaration
public override void WriteData(PresentationWriter writer)
Parameters
Type Name Description
PresentationWriter writer

The destination for the resource record's data.
Overrides
Remarks

Derived classes should implement this method.

By default, this will write the hex encoding of the GetData() preceeded by "#" and the number integer bytes.

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WriteData(WireWriter)

Write the data that is specific to the resource record Type.

Declaration
public override void WriteData(WireWriter writer)
Parameters
Type Name Description
WireWriter writer

The destination for the DNS object's data.
Overrides
Remarks

Derived classes must implement this method.

Implements