File	Doc	Category	Size	Date	Package
AlgorithmParameterGenerator.java	API Doc	Android 1.5 API	9233	Wed May 06 22:41:04 BST 2009	java.security

AlgorithmParameterGenerator

• java.lang.Object

Fields Summary
private static final String	SERVICE
private static org.apache.harmony.security.fortress.Engine	engine
private static SecureRandom	randm
private final Provider	provider
private final AlgorithmParameterGeneratorSpi	spiImpl
private final String	algorithm

Constructors Summary

protected AlgorithmParameterGenerator(AlgorithmParameterGeneratorSpi paramGenSpi, Provider provider, String algorithm) Constructs a new instance of {@code AlgorithmParameterGenerator} with the given arguments. param paramGenSpi a concrete implementation, this engine instance delegates to. param provider the provider. param algorithm the name of the algorithm. since Android 1.0 this.provider = provider; this.algorithm = algorithm; this.spiImpl = paramGenSpi;

Methods Summary
public final java.security.AlgorithmParameters	generateParameters() Computes and returns {@code AlgorithmParameters} for this generator's algorithm. return {@code AlgorithmParameters} for this generator's algorithm. since Android 1.0 return spiImpl.engineGenerateParameters();
public final java.lang.String	getAlgorithm() Returns the name of the algorithm. return the name of the algorithm. since Android 1.0 return algorithm;
public static java.security.AlgorithmParameterGenerator	getInstance(java.lang.String algorithm) Returns a new instance of {@code AlgorithmParameterGenerator} for the specified algorithm. param algorithm the name of the algorithm to use. return a new instance of {@code AlgorithmParameterGenerator} for the specified algorithm. throws NoSuchAlgorithmException if the specified algorithm is not available. throws NullPointerException if {@code algorithm} is {@code null}. since Android 1.0 if (algorithm == null) { throw new NullPointerException(Messages.getString("security.01")); //$NON-NLS-1$ } synchronized (engine) { engine.getInstance(algorithm, null); return new AlgorithmParameterGenerator( (AlgorithmParameterGeneratorSpi) engine.spi, engine.provider, algorithm); }
public static java.security.AlgorithmParameterGenerator	getInstance(java.lang.String algorithm, java.lang.String provider) Returns a new instance of {@code AlgorithmParameterGenerator} from the specified provider for the specified algorithm. param algorithm the name of the algorithm to use. param provider name of the provider of the {@code AlgorithmParameterGenerator}. return a new instance of {@code AlgorithmParameterGenerator} for the specified algorithm. throws NoSuchAlgorithmException if the specified algorithm is not available. throws NoSuchProviderException if the specified provider is not available. throws NullPointerException if {@code algorithm} is {@code null}. since Android 1.0 if ((provider == null) || (provider.length() == 0)) { throw new IllegalArgumentException( Messages.getString("security.02")); //$NON-NLS-1$ } Provider impProvider = Security.getProvider(provider); if (impProvider == null) { throw new NoSuchProviderException(provider); } return getInstance(algorithm, impProvider);
public static java.security.AlgorithmParameterGenerator	getInstance(java.lang.String algorithm, java.security.Provider provider) Returns a new instance of {@code AlgorithmParameterGenerator} from the specified provider for the specified algorithm. param algorithm the name of the algorithm to use. param provider the provider of the {@code AlgorithmParameterGenerator}. return a new instance of {@code AlgorithmParameterGenerator} for the specified algorithm. throws NoSuchAlgorithmException if the specified algorithm is not available. throws NullPointerException if {@code algorithm} is {@code null}. since Android 1.0 if (provider == null) { throw new IllegalArgumentException(Messages.getString("security.04")); //$NON-NLS-1$ } if (algorithm == null) { throw new NullPointerException(Messages.getString("security.01")); //$NON-NLS-1$ } synchronized (engine) { engine.getInstance(algorithm, provider, null); return new AlgorithmParameterGenerator( (AlgorithmParameterGeneratorSpi) engine.spi, provider, algorithm); }
public final java.security.Provider	getProvider() Returns the provider associated with this {@code AlgorithmParameterGenerator}. return the provider associated with this {@code AlgorithmParameterGenerator}. since Android 1.0 return provider;
public final void	init(java.security.spec.AlgorithmParameterSpec genParamSpec, java.security.SecureRandom random) Initializes this {@code AlgorithmParameterGenerator} with the given {@code AlgorithmParameterSpec} and the given {@code SecureRandom}. param genParamSpec the parameters to use. param random the source of randomness. throws InvalidAlgorithmParameterException if the specified parameters are not supported. since Android 1.0 spiImpl.engineInit(genParamSpec, random);
public final void	init(int size) Initializes this {@code AlgorithmParameterGenerator} with the given size. The default parameter set and a default {@code SecureRandom} instance will be used. param size the size (in number of bits). since Android 1.0 spiImpl.engineInit(size, randm);
public final void	init(int size, java.security.SecureRandom random) Initializes this {@code AlgorithmParameterGenerator} with the given size and the given {@code SecureRandom}. The default parameter set will be used. param size the size (in number of bits). param random the source of randomness. since Android 1.0 spiImpl.engineInit(size, random);
public final void	init(java.security.spec.AlgorithmParameterSpec genParamSpec) Initializes this {@code AlgorithmParameterGenerator} with the given {@code AlgorithmParameterSpec}. A default {@code SecureRandom} instance will be used. param genParamSpec the parameters to use. throws InvalidAlgorithmParameterException if the specified parameters are not supported. since Android 1.0 spiImpl.engineInit(genParamSpec, randm);