de.flexiprovider.core.kdf
Class PBKDF2Parameters

java.lang.Object
  |
  +--java.security.AlgorithmParametersSpi
        |
        +--de.flexiprovider.api.parameters.AlgorithmParameters
              |
              +--de.flexiprovider.core.kdf.PBKDF2Parameters

public class PBKDF2Parameters

extends AlgorithmParameters

This class represents parameters for the default key derivation function (OID 1.2.840.113549.2.7) for the passphrase based encryption.

Author:

Thomas Wahrenbruch, Martin Döring

Field Summary

static java.lang.String

OID The OID of PBKDF2.

Constructor Summary

PBKDF2Parameters()

Method Summary

byte[]	getEncoded() Return the parameters encoded in their primary encoding format.
byte[]	getEncoded(java.lang.String format) Return the parameters encoded in the specified encoding format.
AlgorithmParameterSpec	getParameterSpec(java.lang.Class paramSpec) Return a transparent specification of the parameters.
void	init(AlgorithmParameterSpec params) Initialize the parameters with the given parameter specification.
void	init(byte[] encParams) Import the specified parameters and decode them according to the primary decoding format (ASN.1) for parameters.
void	init(byte[] encParams, java.lang.String format) Import the specified parameters and decode them according to the specified decoding format.
java.lang.String	toString()

Methods inherited from class de.flexiprovider.api.parameters.AlgorithmParameters

engineGetEncoded, engineGetEncoded, engineGetParameterSpec, engineInit, engineInit, engineInit, engineToString

Methods inherited from class java.lang.Object

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

Field Detail

OID

public static final java.lang.String OID

The OID of PBKDF2.

Constructor Detail

PBKDF2Parameters

public PBKDF2Parameters()

Method Detail

init

public void init(AlgorithmParameterSpec params)
          throws InvalidParameterSpecException

Initialize the parameters with the given parameter specification. Currently, only PBKDF2ParameterSpec is supported as specification type.

Overrides:

init in class AlgorithmParameters

Parameters:

params - the parameter specification

Throws:

InvalidParameterSpecException - if the parameter specification is not an instance of PBKDF2ParameterSpec.

init

public void init(byte[] encParams)
          throws java.io.IOException

Import the specified parameters and decode them according to the primary decoding format (ASN.1) for parameters.

Overrides:

init in class AlgorithmParameters

Parameters:

encParams - the encoded parameters

Throws:

java.io.IOException - on decoding errors.

init

public void init(byte[] encParams,
                 java.lang.String format)
          throws java.io.IOException

Import the specified parameters and decode them according to the specified decoding format. Currently, only the primary decoding format ("ASN.1") is supported.

Overrides:

init in class AlgorithmParameters

Parameters:

encParams - the encoded parameters

format - the decoding format

Throws:

java.io.IOException - on decoding errors or if the encoding format is unsupported.

getEncoded

public byte[] getEncoded()
                  throws java.io.IOException

Return the parameters encoded in their primary encoding format. The primary encoding format for parameters is ASN.1.

Overrides:

getEncoded in class AlgorithmParameters

Returns:

the encoded parameters

Throws:

java.io.IOException - on encoding errors.

getEncoded

public byte[] getEncoded(java.lang.String format)
                  throws java.io.IOException

Return the parameters encoded in the specified encoding format. Currently, only the primary encoding format ("ASN.1") is supported.

Overrides:

getEncoded in class AlgorithmParameters

Parameters:

format - the decoding format

Returns:

the encoded parameters

Throws:

java.io.IOException - on encoding errors or if the encoding format is unsupported.

getParameterSpec

public AlgorithmParameterSpec getParameterSpec(java.lang.Class paramSpec)
                                        throws InvalidParameterSpecException

Return a transparent specification of the parameters. Currently, only PBKDF2ParameterSpec is supported as specification type.

Overrides:

getParameterSpec in class AlgorithmParameters

Parameters:

paramSpec - the desired parameter specification type

Returns:

the parameter specification

Throws:

InvalidParameterSpecException - if the parameter specification type is not assignable from PBKDF2ParameterSpec.

toString

public java.lang.String toString()

Overrides:

toString in class AlgorithmParameters

Returns:

a human readable form of the parameters