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java.lang.Object | +----java.security.KeyPairGeneratorSpi
This class defines the Service Provider Interface (SPI)
for the KeyPairGenerator
class, which is used to generate
pairs of public and private keys.
All the abstract methods in this class must be implemented by each cryptographic service provider who wishes to supply the implementation of a key pair generator for a particular algorithm.
In case the client does not explicitly initialize the KeyPairGenerator
(via a call to an initialize
method), each provider must
supply (and document) a default initialization.
For example, the Sun provider uses a default modulus size (strength)
of 1024 bits.
Constructor Summary | |
KeyPairGeneratorSpi()
|
Method Summary | |
KeyPair | generateKeyPair()
|
void | initialize(int strength,
SecureRandom random)
|
void | initialize(AlgorithmParameterSpec params,
SecureRandom random)
|
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
public KeyPairGeneratorSpi()
Method Detail |
public abstract void initialize(int strength, SecureRandom random)
strength
- the strength of the key. This is an
algorithm-specific metric, such as modulus length, specified in
number of bits.
random
- the source of randomness for this generator.
public void initialize(AlgorithmParameterSpec params, SecureRandom random) throws InvalidAlgorithmParameterException
This concrete method has been added to this previously-defined abstract class. (For backwards compatibility, it cannot be abstract.) It may be overridden by a provider to initialize the key pair generator. Such an override is expected to throw an InvalidAlgorithmParameterException if a parameter is inappropriate for this key pair generator. If this method is not overridden, it always throws an UnsupportedOperationException.
params
- the parameter set used to generate the keys.
random
- the source of randomness for this generator.
public abstract KeyPair generateKeyPair()
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