javax.crypto
Class 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
,
AlgorithmParameters
,
AlgorithmParameterSpec
Methods inherited from class java.lang.Object |
clone,
equals,
finalize,
getClass,
hashCode,
notify,
notifyAll,
toString,
wait,
wait,
wait |
KeyGeneratorSpi
public KeyGeneratorSpi()
engineInit
protected abstract void engineInit(SecureRandom random)
- Initializes the key generator.
- Parameters:
random
- the source of randomness for this generator
engineInit
protected abstract void engineInit(AlgorithmParameterSpec params,
SecureRandom random)
throws InvalidAlgorithmParameterException
- Initializes the key generator with the specified parameter
set and a user-provided source of randomness.
- Parameters:
params
- the key generation parametersrandom
- the source of randomness for this key generator- Throws:
- InvalidAlgorithmParameterException - if
params is inappropriate for this key generator
engineInit
protected abstract void engineInit(int strength,
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