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

This
class defines a generic API for generating
parameters for a cryptographic algorithm, typically a
Signature or a
javax.crypto.Cipher. Create an
AlgorithmParameterGenerator by calling one of the
static getInstance(
) factory methods and specifying the name of the algorithm
and, optionally, the name or Provider object of
the desired provider. The default
"SUN" provider supports the
"DSA" algorithm. The
"SunJCE" provider shipped with the
JCE supports "DiffieHellman". Once
you have obtained a generator, initialize it by calling the
init( ) method and specifying an
algorithm-independent parameter size (in bits) or an
algorithm-dependent AlgorithmParameterSpec object.
You may also specify a SecureRandom source of
randomness when you call init( ). Once you have
created and initialized the
AlgorithmParameterGenerator, call
generateParameters( ) to generate an
AlgorithmParameters object.

public class

AlgorithmParameterGenerator {
// Protected Constructors
protected

AlgorithmParameterGenerator (AlgorithmParameterGeneratorSpi

paramGenSpi , Provider

provider , String

algorithm );
// Public Class Methods
public static AlgorithmParameterGenerator

getInstance (String

algorithm )
throws NoSuchAlgorithmException;

1.4 public static AlgorithmParameterGenerator

getInstance (String

algorithm ,
Provider

provider ) throws NoSuchAlgorithmException;
public static AlgorithmParameterGenerator

getInstance (String

algorithm ,
String

provider )
throws NoSuchAlgorithmException, NoSuchProviderException;
// Public Instance Methods
public final AlgorithmParameters

generateParameters ( );
public final String

getAlgorithm ( );
public final Provider

getProvider ( );
public final void

init (java.security.spec.AlgorithmParameterSpec

genParamSpec ) throws InvalidAlgorithmParameterException;
public final void

init (int

size );
public final void

init (java.security.spec.AlgorithmParameterSpec

genParamSpec , SecureRandom

random )
throws InvalidAlgorithmParameterException;
public final void

init (int

size , SecureRandom

random );
}