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Class javax.crypto.KeyGeneratorSpi

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

public abstract class KeyGeneratorSpi
extends java.lang.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, java.security.AlgorithmParameters, java.security.spec.AlgorithmParameterSpec

Constructor Summary
 KeyGeneratorSpi()
 
 

Method Summary
SecretKey  engineGenerateKey()
Generates a secret key.
void  engineInit(java.security.SecureRandom random)
Initializes the key generator.
void  engineInit(java.security.spec.AlgorithmParameterSpec params, java.security.SecureRandom random)
Initializes the key generator with the specified parameter set and a user-provided source of randomness.
void  engineInit(int strength, java.security.SecureRandom random)
Initializes this key generator for a certain strength, using the given source of randomness.
 
Methods inherited from class java.lang.Object
 clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

KeyGeneratorSpi

public KeyGeneratorSpi()
Method Detail

engineInit

protected abstract void engineInit(java.security.SecureRandom random)
Initializes the key generator.
Parameters:
random - the source of randomness for this generator

engineInit

protected abstract void engineInit(java.security.spec.AlgorithmParameterSpec params,
                                   java.security.SecureRandom random) throws java.security.InvalidAlgorithmParameterException
Initializes 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:
java.security.InvalidAlgorithmParameterException - if params is inappropriate for this key generator

engineInit

protected abstract void engineInit(int strength,
                                   java.security.SecureRandom random)
Initializes 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

engineGenerateKey

protected abstract SecretKey engineGenerateKey()
Generates a secret key.
Returns:
the new key

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