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javax.crypto
Class SecretKeyFactory  

java.lang.Object
  javax.crypto.SecretKeyFactory

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public class SecretKeyFactory

extends java.lang.Object

A secret key factory translates SecretKey objects to and from java.security.spec.KeySpec objects, and can translate between different vendors' representations of SecretKey objects (for security or semantics; whichever applies).

Since:

1.4

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Field Summary
private  java.lang.String	algorithm           The name of the algorithm.
private  java.security.Provider	provider           The provider of the implementation.
private static java.lang.String	SERVICE
private  SecretKeyFactorySpi	skfSpi           The underlying factory implementation.

 

Constructor Summary
protected	SecretKeyFactory(SecretKeyFactorySpi skfSpi, java.security.Provider provider, java.lang.String algorithm)           Create a new secret key factory.

 

Method Summary
SecretKey	generateSecret(java.security.spec.KeySpec keySpec)           Generate a secret key from a key specification, if possible.
java.lang.String	getAlgorithm()           Get the algorithm name.
static SecretKeyFactory	getInstance(java.lang.String algorithm)           Create a new secret key factory from the first appropriate instance.
static SecretKeyFactory	getInstance(java.lang.String algorithm, java.security.Provider provider)           Create a new secret key factory from the specified provider.
static SecretKeyFactory	getInstance(java.lang.String algorithm, java.lang.String provider)           Create a new secret key factory from the named provider.
java.security.spec.KeySpec	getKeySpec(SecretKey key, java.lang.Class keySpec)           Get the key specification from a secret key.
java.security.Provider	getProvider()           Get the provider of this implementation.
SecretKey	translateKey(SecretKey key)           Translate a secret key into another form.

 

Methods inherited from class java.lang.Object

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

 

Field Detail

SERVICE

private static final java.lang.String SERVICE

See Also:

Constant Field Values

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skfSpi

private SecretKeyFactorySpi skfSpi

The underlying factory implementation.

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provider

private java.security.Provider provider

The provider of the implementation.

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algorithm

private java.lang.String algorithm

The name of the algorithm.

Constructor Detail

SecretKeyFactory

protected SecretKeyFactory(SecretKeyFactorySpi skfSpi,
                           java.security.Provider provider,
                           java.lang.String algorithm)

Create a new secret key factory.

Method Detail

getInstance

public static final SecretKeyFactory getInstance(java.lang.String algorithm)
                                          throws java.security.NoSuchAlgorithmException

Create a new secret key factory from the first appropriate instance.

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getInstance

public static final SecretKeyFactory getInstance(java.lang.String algorithm,
                                                 java.lang.String provider)
                                          throws java.security.NoSuchAlgorithmException,
                                                 java.security.NoSuchProviderException

Create a new secret key factory from the named provider.

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getInstance

public static final SecretKeyFactory getInstance(java.lang.String algorithm,
                                                 java.security.Provider provider)
                                          throws java.security.NoSuchAlgorithmException

Create a new secret key factory from the specified provider.

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generateSecret

public final SecretKey generateSecret(java.security.spec.KeySpec keySpec)
                               throws java.security.spec.InvalidKeySpecException

Generate a secret key from a key specification, if possible.

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getAlgorithm

public final java.lang.String getAlgorithm()

Get the algorithm name.

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getKeySpec

public final java.security.spec.KeySpec getKeySpec(SecretKey key,
                                                   java.lang.Class keySpec)
                                            throws java.security.spec.InvalidKeySpecException

Get the key specification from a secret key.

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getProvider

public final java.security.Provider getProvider()

Get the provider of this implementation.

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translateKey

public final SecretKey translateKey(SecretKey key)
                             throws java.security.InvalidKeyException

Translate a secret key into another form.

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