File	Doc	Category	Size	Date	Package
KeyFactory.java	API Doc	Android 1.5 API	8713	Wed May 06 22:41:06 BST 2009	java.security

KeyFactory

• java.lang.Object

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

Constructors Summary
protected KeyFactory(KeyFactorySpi keyFacSpi, Provider provider, String algorithm) Constructs a new instance of {@code KeyFactory} with the specified arguments. param keyFacSpi the concrete key factory service. param provider the provider. param algorithm the algorithm to use. since Android 1.0 this.provider = provider; this. algorithm = algorithm; this.spiImpl = keyFacSpi;

Methods Summary
public final java.security.PrivateKey	generatePrivate(java.security.spec.KeySpec keySpec) Generates a instance of {@code PrivateKey} from the given key specification. param keySpec the specification of the private key. return the private key. throws InvalidKeySpecException if the specified {@code keySpec} is invalid. since Android 1.0 return spiImpl.engineGeneratePrivate(keySpec);
public final java.security.PublicKey	generatePublic(java.security.spec.KeySpec keySpec) Generates a instance of {@code PublicKey} from the given key specification. param keySpec the specification of the public key return the public key throws InvalidKeySpecException if the specified {@code keySpec} is invalid since Android 1.0 return spiImpl.engineGeneratePublic(keySpec);
public final java.lang.String	getAlgorithm() Returns the name of the algorithm associated with this {@code KeyFactory} . return the name of the algorithm associated with this {@code KeyFactory} . since Android 1.0 return algorithm;
public static java.security.KeyFactory	getInstance(java.lang.String algorithm) Returns a new instance of {@code KeyFactory} that utilizes the specified algorithm. param algorithm the name of the algorithm. return a new instance of {@code KeyFactory} that utilizes the specified algorithm. throws NoSuchAlgorithmException if no provider provides the requested algorithm. 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 KeyFactory((KeyFactorySpi)engine.spi, engine.provider, algorithm); }
public static java.security.KeyFactory	getInstance(java.lang.String algorithm, java.lang.String provider) Returns a new instance of {@code KeyFactory} that utilizes the specified algorithm from the specified provider. param algorithm the name of the algorithm. param provider the name of the provider. return a new instance of {@code KeyFactory} that utilizes the specified algorithm from the specified provider. throws NoSuchAlgorithmException if the provider does not provide the requested algorithm. throws NoSuchProviderException if the requested provider is not available. throws IllegalArgumentException if {@code provider} is {@code null} or empty. since Android 1.0 if ((provider == null) || (provider.length() == 0)) { throw new IllegalArgumentException(Messages.getString("security.02")); //$NON-NLS-1$ } Provider p = Security.getProvider(provider); if (p == null) { throw new NoSuchProviderException(Messages.getString("security.03", provider)); //$NON-NLS-1$ //$NON-NLS-2$ } return getInstance(algorithm, p);
public static java.security.KeyFactory	getInstance(java.lang.String algorithm, java.security.Provider provider) Returns a new instance of {@code KeyFactory} that utilizes the specified algorithm from the specified provider. param algorithm the name of the algorithm. param provider the security provider. return a new instance of {@code KeyFactory} that utilizes the specified algorithm from the specified provider. throws NoSuchAlgorithmException if the provider does not provide the requested algorithm. 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 KeyFactory((KeyFactorySpi)engine.spi, provider, algorithm); }
public final T	getKeySpec(java.security.Key key, java.lang.Class keySpec) Returns the key specification for the specified key. param key the key from which the specification is requested. param keySpec the type of the requested {@code KeySpec}. return the key specification for the specified key. throws InvalidKeySpecException if the key can not be processed, or the requested requested {@code KeySpec} is inappropriate for the given key. since Android 1.0 return spiImpl.engineGetKeySpec(key, keySpec);
public final java.security.Provider	getProvider() Returns the provider associated with this {@code KeyFactory}. return the provider associated with this {@code KeyFactory}. since Android 1.0 return provider;
public final java.security.Key	translateKey(java.security.Key key) Translates the given key into a key from this key factory. param key the key to translate. return the translated key. throws InvalidKeyException if the specified key can not be translated by this key factory. since Android 1.0 return spiImpl.engineTranslateKey(key);