iaik.security.spec

Class IaikPBEParameterSpec

java.lang.Object

javax.crypto.spec.PBEParameterSpec

iaik.security.spec.IaikPBEParameterSpec

All Implemented Interfaces:

ASN1Type, java.security.spec.AlgorithmParameterSpec

public class IaikPBEParameterSpec
extends javax.crypto.spec.PBEParameterSpec
implements ASN1Type

This class extends PBEParameterSpec and implements the ASN1Type interface. A PBEParameterSpec specifies the parameters salt and iteration count, as used by password based encryption according to PKCS #5: Password-Based Cryptography Specification Version 2.0 (RFC 2898).

Constructor Summary

Constructors

Constructor and Description
IaikPBEParameterSpec(ASN1Object algorithmParameter) Creates a PBE paramter specification from an ASN1Object.
IaikPBEParameterSpec(byte[] salt, int iterationCount) Specifies the PBE parameters, using a salt and a iteration count.

Method Summary

Methods

Modifier and Type	Method and Description
void	decode(ASN1Object obj) Decodes the given ASN.1 object and parses it for salt and iteration count.
int	getIterationCount() Returns the iteration count.
byte[]	getSalt() Returns the salt.
ASN1Object	toASN1Object() Returns this PBE parameter specification as an ASN1Object.

Methods inherited from class java.lang.Object

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

Constructor Detail

IaikPBEParameterSpec

public IaikPBEParameterSpec(byte[] salt,
                    int iterationCount)

Specifies the PBE parameters, using a salt and a iteration count.

Parameters:

salt - the salt value

iterationCount - the iteration count value

IaikPBEParameterSpec

public IaikPBEParameterSpec(ASN1Object algorithmParameter)
                     throws CodingException

Creates a PBE paramter specification from an ASN1Object. PBE parameters are most often transported as algorithm parameters. This constructor can be used to create PBE parameters from an algorithm parameter. Simply call:

IaikPBEParameterSpec params = new IaikPBEParameterSpec(encryptionAlg.getParameter());

Parameters:

algorithmParameter - the algorithm parameters as ASN1Object

Throws:

CodingException - if the parameter could not be decoded

Method Detail

getSalt

public byte[] getSalt()

Returns the salt.

Overrides:

getSalt in class javax.crypto.spec.PBEParameterSpec

Returns:

the salt

getIterationCount

public int getIterationCount()

Returns the iteration count.

Overrides:

getIterationCount in class javax.crypto.spec.PBEParameterSpec

Returns:

the iteration count

decode

public void decode(ASN1Object obj)
            throws CodingException

Decodes the given ASN.1 object and parses it for salt and iteration count.

Specified by:

decode in interface ASN1Type

Parameters:

obj - the algorithm parameters as ASN1Object

Throws:

CodingException - if the parameter could not be decoded

toASN1Object

public ASN1Object toASN1Object()

Returns this PBE parameter specification as an ASN1Object. An object of ASN.1 type SEQUENCE is created containing the salt at component 0 and the iteration count at component 1.

Specified by:

toASN1Object in interface ASN1Type

Returns:

this PBE parameter specification as an ASN1Object