Java in a Nutshell, 5th Edition [Electronic resources] نسخه متنی

This class is a generic, opaque
representation of the parameters used by some cryptographic
algorithm. You can create an instance of the class with one of the
static getInstance( ) factory methods, specifying
the desired algorithm and, optionally, the desired provider. The
default "SUN" provider supports the
"DSA" algorithm. The
"SunJCE" provider shipped with the
JCE supports "DES",
"DESede",
"PBE",
"Blowfish", and
"DiffieHellman". Once you have
obtained an AlgorithmParameters object, initialize
it by passing an algorithm-specific
java.security.spec.AlgorithmParameterSpec object
or the encoded parameter values as a byte array to the init(
) method. You can also create an
AlgorithmParameters object with an
AlgorithmParameterGenerator.
getEncoded( ) returns
the initialized algorithm parameters as a byte array, using either
the algorithm-specific default encoding or the named encoding format
you specified.

public class

AlgorithmParameters {
// Protected Constructors
protected

AlgorithmParameters (AlgorithmParametersSpi

paramSpi , Provider

provider , String

algorithm );
// Public Class Methods
public static AlgorithmParameters

getInstance (String

algorithm )
throws NoSuchAlgorithmException;
public static AlgorithmParameters

getInstance (String

algorithm ,
String

provider ) throws NoSuchAlgorithmException, NoSuchProviderException;

1.4 public static AlgorithmParameters

getInstance (String

algorithm , Provider

provider )
throws NoSuchAlgorithmException;
// Public Instance Methods
public final String

getAlgorithm ( );
public final byte[ ]

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

getEncoded (String

format ) throws java.io.IOException;
public final <T extends java.security.spec.AlgorithmParameterSpec>
T

getParameterSpec (Class<T>

paramSpec ) throws java.security.spec.
InvalidParameterSpecException;
public final Provider

getProvider ( );
public final void

init (java.security.spec.AlgorithmParameterSpec

paramSpec )
throws java.security.spec.InvalidParameterSpecException;
public final void

init (byte[ ]

params ) throws java.io.IOException;
public final void

init (byte[ ]

params , String

format )
throws java.io.IOException;
// Public Methods Overriding Object
public final String

toString ( );
}

Passed To

javax.crypto.Cipher.init( ),
javax.crypto.CipherSpi.engineInit( ),
javax.crypto.EncryptedPrivateKeyInfo.EncryptedPrivateKeyInfo(
), javax.crypto.ExemptionMechanism.init(
), javax.crypto.ExemptionMechanismSpi.engineInit(
)

Returned By

AlgorithmParameterGenerator.generateParameters( ),
AlgorithmParameterGeneratorSpi.engineGenerateParameters(
), Signature.getParameters( ),
SignatureSpi.engineGetParameters( ),
javax.crypto.Cipher.getParameters( ),
javax.crypto.CipherSpi.engineGetParameters( ),
javax.crypto.EncryptedPrivateKeyInfo.getAlgParameters(
)