| java.lang.Object
 java.security.KeyPairGeneratorSpi
All known Subclasses: java.security.KeyPairGenerator,
| KeyPairGeneratorSpi | | abstract public class KeyPairGeneratorSpi (Code) | | 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 (keysize)
of 1024 bits.
author:
Benjamin Renaud
version:
1.11, 02/02/00
See Also: KeyPairGenerator
See Also: java.security.spec.AlgorithmParameterSpec |
| Method Summary | |
| abstract public KeyPair | generateKeyPair()
Generates a key pair. | | abstract public void | initialize(int keysize, SecureRandom random)
Initializes the key pair generator for a certain keysize, using
the default parameter set.
Parameters:
keysize - the keysize. | | public void | initialize(AlgorithmParameterSpec params, SecureRandom random)
Initializes the key pair generator using the specified parameter
set and user-provided source of randomness.
This concrete method has been added to this previously-defined
abstract class. |
| generateKeyPair | | abstract public KeyPair generateKeyPair()(Code) | | Generates a key pair. Unless an initialization method is called
using a KeyPairGenerator interface, algorithm-specific defaults
will be used. This will generate a new key pair every time it
is called.
the newly generated KeyPair |
| initialize | | abstract public void initialize(int keysize, SecureRandom random)(Code) | | Initializes the key pair generator for a certain keysize, using
the default parameter set.
Parameters:
keysize - the keysize. This is analgorithm-specific metric, such as modulus length, specified innumber of bits.
Parameters:
random - the source of randomness for this generator.
exception:
InvalidParameterException - if the keysize is notsupported by this KeyPairGeneratorSpi object. |
| initialize | | public void initialize(AlgorithmParameterSpec params, SecureRandom random) throws InvalidAlgorithmParameterException(Code) | | Initializes the key pair generator using the specified parameter
set and user-provided source of randomness.
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.
Parameters:
params - the parameter set used to generate the keys.
Parameters:
random - the source of randomness for this generator.
exception:
InvalidAlgorithmParameterException - if the given parametersare inappropriate for this key pair generator.
since:
1.2 |
|
|