com.entrust.toolkit.security.spec

Class MacParameterSpec

java.lang.Object

com.entrust.toolkit.security.spec.MacParameterSpec

All Implemented Interfaces:

ASN1Type, java.security.spec.AlgorithmParameterSpec

public class MacParameterSpec
extends java.lang.Object
implements java.security.spec.AlgorithmParameterSpec, ASN1Type

This class implements the general format for MAC algorithm parameters.

It specifies only the MAC length (in bits).

 MacParameter ::= INTEGER -- Length of MAC (16, 24, 32, 40, 48 or 64 bits)
 

Although the comment in the structure indicates a specific range for the length, this is not enforced here. Instead, this must be enforced by the MAC algorithms themselves.

Since:

7.0

Constructor Summary

Constructors

Constructor and Description
MacParameterSpec() The default constructor.
MacParameterSpec(ASN1Object obj) Creates a new MacParameterSpec object from an ASN1Object.
MacParameterSpec(int length) Creates a new MacParameterSpec object with the specified component.

Method Summary

Modifier and Type	Method and Description
void	decode(ASN1Object obj) Decodes a MacParameterSpec object from an ASN1Object.
int	getLength() Returns the length (size) of the MAC.
void	setLength(int length) Sets the length (size) of the MAC.
ASN1Object	toASN1Object() Encodes this MacParameterSpec object as an ASN1Object.
java.lang.String	toString() Creates a text representation of the ASN.1 structure of this MacParameterSpec object.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

MacParameterSpec

public MacParameterSpec()

The default constructor.

It creates a new MacParameterSpec object with a default MAC length of 64.

MacParameterSpec

public MacParameterSpec(int length)

Creates a new MacParameterSpec object with the specified component.

Parameters:

length - the MAC length in bits

MacParameterSpec

public MacParameterSpec(ASN1Object obj)
                 throws CodingException

Creates a new MacParameterSpec object from an ASN1Object.

The ASN1Object must be an MacParameter structure.

Parameters:

obj - the ASN.1 representation of an MacParameter structure

Throws:

CodingException - thrown if an errors occurs while decoding the ANS1Object

Method Detail

getLength

public int getLength()

Returns the length (size) of the MAC.

Returns:

the MAC length in bits

setLength

public void setLength(int length)

Sets the length (size) of the MAC.

Parameters:

length - the MAC length in bits

decode

public void decode(ASN1Object obj)
            throws CodingException

Decodes a MacParameterSpec object from an ASN1Object.

The ASN1Object must be a MacParameter structure.

Specified by:

decode in interface ASN1Type

Parameters:

obj - an ASN.1 representation of a MacParameter structure

Throws:

CodingException - thrown if an errors occurs while decoding the ANS1Object

toASN1Object

public ASN1Object toASN1Object()

Encodes this MacParameterSpec object as an ASN1Object.

Specified by:

toASN1Object in interface ASN1Type

Returns:

an ASN.1 representation of the MacParameter structure

toString

public java.lang.String toString()

Creates a text representation of the ASN.1 structure of this MacParameterSpec object.

Overrides:

toString in class java.lang.Object

Returns:

a text representation of the ASN.1 structure of this object