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java.security
Class AlgorithmParameters  

java.lang.Object
  java.security.AlgorithmParameters

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public class AlgorithmParameters

extends java.lang.Object

AlgorithmParameters is an Algorithm Parameters class which provides an interface through which the user can manage the parameters of an Algorithm.

Since:

1.2

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Field Summary
private  java.lang.String	algorithm
private static java.lang.String	ALGORITHM_PARAMETERS           Service name for algorithm parameters.
private  AlgorithmParametersSpi	paramSpi
private  Provider	provider

 

Constructor Summary
protected	AlgorithmParameters(AlgorithmParametersSpi paramSpi, Provider provider, java.lang.String algorithm)           Constructs a new instance of AlgorithmParameters.

 

Method Summary
java.lang.String	getAlgorithm()
byte[]	getEncoded()           Returns the parameters in the default encoding format.
byte[]	getEncoded(java.lang.String format)           Returns the parameters in the specified encoding format.
static AlgorithmParameters	getInstance(java.lang.String algorithm)           Returns a new instance of AlgorithmParameters representing the specified algorithm parameters.
static AlgorithmParameters	getInstance(java.lang.String algorithm, Provider provider)           Returns a new instance of AlgorithmParameters representing the specified algorithm parameters from the specified Provider.
static AlgorithmParameters	getInstance(java.lang.String algorithm, java.lang.String provider)           Returns a new instance of AlgorithmParameters representing the specified algorithm parameters from a named provider.
java.security.spec.AlgorithmParameterSpec	getParameterSpec(java.lang.Class paramSpec)           Returns a new instance of AlgorithmParameters as a designated parameter specification java.lang.Class.
Provider	getProvider()
void	init(java.security.spec.AlgorithmParameterSpec paramSpec)           Initializes the engine with the specified java.security.spec.AlgorithmParameterSpec.
void	init(byte[] params)           Initializes the engine with the specified parameters stored in the byte array and decodes them according to the ASN.1 specification.
void	init(byte[] params, java.lang.String format)           Initializes the engine with the specified parameters stored in the byte array and decodes them according to the specified decoding specification.
java.lang.String	toString()           Returns a string representation of the encoded form.

 

Methods inherited from class java.lang.Object

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

 

Field Detail

ALGORITHM_PARAMETERS

private static final java.lang.String ALGORITHM_PARAMETERS

Service name for algorithm parameters.

See Also:

Constant Field Values

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paramSpi

private AlgorithmParametersSpi paramSpi

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provider

private Provider provider

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algorithm

private java.lang.String algorithm

Constructor Detail

AlgorithmParameters

protected AlgorithmParameters(AlgorithmParametersSpi paramSpi,
                              Provider provider,
                              java.lang.String algorithm)

Constructs a new instance of AlgorithmParameters.

Method Detail

getAlgorithm

public final java.lang.String getAlgorithm()

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getInstance

public static AlgorithmParameters getInstance(java.lang.String algorithm)
                                       throws NoSuchAlgorithmException

Returns a new instance of AlgorithmParameters representing the specified algorithm parameters.

The returned AlgorithmParameters must still be initialized with an init() method.

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getInstance

public static AlgorithmParameters getInstance(java.lang.String algorithm,
                                              java.lang.String provider)
                                       throws NoSuchAlgorithmException,
                                              NoSuchProviderException

Returns a new instance of AlgorithmParameters representing the specified algorithm parameters from a named provider.

The returned AlgorithmParameters must still be intialized with an init() method.

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getInstance

public static AlgorithmParameters getInstance(java.lang.String algorithm,
                                              Provider provider)
                                       throws NoSuchAlgorithmException

Returns a new instance of AlgorithmParameters representing the specified algorithm parameters from the specified Provider.

The returned AlgorithmParameters must still be intialized with an init() method.

Since:

1.4

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getProvider

public final Provider getProvider()

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init

public final void init(java.security.spec.AlgorithmParameterSpec paramSpec)
                throws java.security.spec.InvalidParameterSpecException

Initializes the engine with the specified java.security.spec.AlgorithmParameterSpec.

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init

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

Initializes the engine with the specified parameters stored in the byte array and decodes them according to the ASN.1 specification. If the ASN.1 specification exists then it succeeds otherwise an java.io.IOException is thrown.

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init

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

Initializes the engine with the specified parameters stored in the byte array and decodes them according to the specified decoding specification. If format is null, then this method decodes the byte array using the ASN.1 specification if it exists, otherwise it throws an java.io.IOException.

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getParameterSpec

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

Returns a new instance of AlgorithmParameters as a designated parameter specification java.lang.Class.

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getEncoded

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

Returns the parameters in the default encoding format. The primary encoding format is ASN.1 if it exists for the specified type.

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getEncoded

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

Returns the parameters in the specified encoding format. If format is null then the ASN.1 encoding format is used if it exists for the specified type.

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toString

public final java.lang.String toString()

Returns a string representation of the encoded form.

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Home >> All >> java >> [ security overview ]	PREV CLASS  NEXT CLASS
SUMMARY:  JAVADOC |  SOURCE |  DOWNLOAD | NESTED | FIELD | CONSTR | METHOD	DETAIL: FIELD | CONSTR | METHOD

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