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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.
Constructor Summary | |
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Method Summary | |
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protected abstract SecretKey |
Generates a secret key. |
protected abstract void |
engineInit(AlgorithmParameterSpec params, SecureRandom random) Initializes the key generator with the specified parameter set and a user-provided source of randomness. |
protected abstract void |
engineInit(int keysize, SecureRandom random) Initializes this key generator for a certain keysize, using the given source of randomness. |
protected abstract void |
engineInit(SecureRandom random) Initializes the key generator. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public KeyGeneratorSpi()
Method Detail |
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protected abstract SecretKey engineGenerateKey()
protected abstract void engineInit(AlgorithmParameterSpec params, SecureRandom random) throws InvalidAlgorithmParameterException
params
- the key generation parametersrandom
- the source of randomness for this key generatorInvalidAlgorithmParameterException
- if params
is
inappropriate for this key generatorprotected abstract void engineInit(int keysize, SecureRandom random)
keysize
- the keysize. This is an algorithm-specific metric,
specified in number of bits.random
- the source of randomness for this key generatorprotected abstract void engineInit(SecureRandom random)
random
- the source of randomness for this generator
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