KeyGeneratorSpi

public abstract class KeyGeneratorSpi
extends Object

java.lang.Object
   ↳ javax.crypto.KeyGeneratorSpi


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:

Summary

Public constructors

KeyGeneratorSpi()

Protected methods

abstract SecretKey engineGenerateKey()

Generates a secret key.

abstract void engineInit(AlgorithmParameterSpec params, SecureRandom random)

Initializes the key generator with the specified parameter set and a user-provided source of randomness.

abstract void engineInit(SecureRandom random)

Initializes the key generator.

abstract void engineInit(int keysize, SecureRandom random)

Initializes this key generator for a certain keysize, using the given source of randomness.

Inherited methods

Public constructors

KeyGeneratorSpi

added in API level 1
KeyGeneratorSpi ()

Protected methods

engineGenerateKey

added in API level 1
SecretKey engineGenerateKey ()

Generates a secret key.

Returns
SecretKey the new key

engineInit

added in API level 1
void engineInit (AlgorithmParameterSpec params, 
                SecureRandom random)

Initializes the key generator with the specified parameter set and a user-provided source of randomness.

Parameters
params AlgorithmParameterSpec: the key generation parameters

random SecureRandom: the source of randomness for this key generator

Throws
InvalidAlgorithmParameterException if params is inappropriate for this key generator

engineInit

added in API level 1
void engineInit (SecureRandom random)

Initializes the key generator.

Parameters
random SecureRandom: the source of randomness for this generator

engineInit

added in API level 1
void engineInit (int keysize, 
                SecureRandom random)

Initializes this key generator for a certain keysize, using the given source of randomness.

Parameters
keysize int: the keysize. This is an algorithm-specific metric, specified in number of bits.

random SecureRandom: the source of randomness for this key generator

Throws
InvalidParameterException if the keysize is wrong or not supported.