de.flexiprovider.core.rijndael
Class RijndaelParameters

java.lang.Object
  |
  +--java.security.AlgorithmParametersSpi
        |
        +--de.flexiprovider.api.parameters.AlgorithmParameters
              |
              +--de.flexiprovider.core.rijndael.RijndaelParameters

public class RijndaelParameters

extends AlgorithmParameters

This class is used as an opaque representation of Rijndael parameters. ASN.1/DER encoding and decoding are supported.

Author:

Katja Rauch

See Also:

AlgorithmParameterSpec

Constructor Summary

RijndaelParameters()

Method Summary

byte[]	getEncoded() Return the parameters encoded in the primary encoding format (ASN.1).
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 this parameters object.
void	init(AlgorithmParameterSpec params) Initialize this parameters object using the given parameter specification.
void	init(byte[] encParams) Import the specified parameters and decode them according to the primary decoding format (ASN.1).
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

Constructor Detail

RijndaelParameters

public RijndaelParameters()

Method Detail

init

public void init(AlgorithmParameterSpec params)
          throws InvalidParameterSpecException

Initialize this parameters object using the given parameter specification. The parameter specification has to be an instance of RijndaelParameterSpec.

Overrides:

init in class AlgorithmParameters

Parameters:

params - the parameter specification

Throws:

InvalidParameterSpecException - if the parameter specification is null or of an unsupported type.

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).

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 name of the decoding format

Throws:

java.io.IOException - if format is not equal to "ASN.1" or on decoding errors.

getEncoded

public byte[] getEncoded()

Return the parameters encoded in the primary encoding format (ASN.1).

The ASN.1 definition of the parameters structure is:

 RijndaelParameters ::= SEQUENCE {
   blockSize  INTEGER,
   iv         CHOICE {
     NULL,
     OCTET STRING
   }
 }
 

Overrides:

getEncoded in class AlgorithmParameters

Returns:

the encoded parameters

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 name of the encoding format

Returns:

the encoded parameters

Throws:

java.io.IOException - if format is not equal to "ASN.1" or on decoding errors.

getParameterSpec

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

Return a transparent specification of this parameters object. paramSpec identifies the specification class in which the parameters should be returned. Currently, only RijndaelParameterSpec is supported.

Overrides:

getParameterSpec in class AlgorithmParameters

Parameters:

paramSpec - the the specification class in which the parameters should be returned

Returns:

the parameter specification

Throws:

InvalidParameterSpecException - if the requested parameter is not RijndaelParameterSpec.

toString

public java.lang.String toString()

Overrides:

toString in class AlgorithmParameters

Returns:

a formatted string describing the parameters