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Class javax.crypto.KeyGeneratorSpi

java.lang.Object
   |
   +----javax.crypto.KeyGeneratorSpi

public abstract class KeyGeneratorSpi
extends Object
This class defines the Service Provider Interface (SPI) for the KeyGenerator class. All the abstract methods in this class must be implemented by each cryptographic service provider who wishes to supply the implementation of a key generator for a particular algorithm.

See Also:
SecretKey

Variable Index

 o ident

Constructor Index

 o KeyGeneratorSpi()
Creates a KeyGeneratorSpi object.

Method Index

 o engineGenerateKey()
Generates a secret key.
 o engineInit(AlgorithmParameterSpec, SecureRandom)
Initialises the key generator with the specified parameter set and a user-provided source of randomness.
 o engineInit(int, SecureRandom)
Initialises this key generator for a certain strength, using the given source of randomness.
 o engineInit(SecureRandom)
Initialises the key generator.

Variables

 o ident
 public static final String ident

Constructors

 o KeyGeneratorSpi
 public KeyGeneratorSpi()
Creates a KeyGeneratorSpi object.

Methods

 o engineInit
 protected abstract void engineInit(SecureRandom random)
Initialises the key generator.

Parameters:
random - the source of randomness for this generator.
 o engineInit
 protected abstract void engineInit(AlgorithmParameterSpec params,
                                    SecureRandom random) throws InvalidAlgorithmParameterException
Initialises the key generator with the specified parameter set and a user-provided source of randomness.

Parameters:
params - the key generation parameters
random - the source of randomness for this key generator
Throws: InvalidAlgorithmParameterException
if params is inappropriate for this key generator.
 o engineInit
 protected abstract void engineInit(int strength,
                                    SecureRandom random)
Initialises this key generator for a certain strength, using the given source of randomness.

Parameters:
strength - the strength of the key. This is an algorithm-specific metric specified in number of bits.
random - the source of randomness for this key generator
 o engineGenerateKey
 protected abstract SecretKey engineGenerateKey()
Generates a secret key.

Returns:
the new key

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