public
abstract
class
KeyGeneratorSpi
extends Object
| java.lang.Object | |
| ↳ | javax.crypto.KeyGeneratorSpi |
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:
Public constructors | |
|---|---|
KeyGeneratorSpi()
|
|
Protected methods | |
|---|---|
abstract
SecretKey
|
engineGenerateKey()
Generates a secret key. |
abstract
void
|
engineInit(AlgorithmParameterSpec params, SecureRandom random)
Initializes the key generator with the specified parameter set and a user-provided source of randomness. |
abstract
void
|
engineInit(SecureRandom random)
Initializes the key generator. |
abstract
void
|
engineInit(int keysize, SecureRandom random)
Initializes this key generator for a certain keysize, using the given source of randomness. |
Inherited methods | |
|---|---|
 From
class
java.lang.Object
| |
SecretKey engineGenerateKey ()
Generates a secret key.
| Returns | |
|---|---|
SecretKey |
the new key |
void engineInit (AlgorithmParameterSpec params, SecureRandom random)
Initializes the key generator with the specified parameter set and a user-provided source of randomness.
| Parameters | |
|---|---|
params |
AlgorithmParameterSpec:
the key generation parameters |
random |
SecureRandom:
the source of randomness for this key generator |
| Throws | |
|---|---|
InvalidAlgorithmParameterException |
if params is
inappropriate for this key generator
|
void engineInit (SecureRandom random)
Initializes the key generator.
| Parameters | |
|---|---|
random |
SecureRandom:
the source of randomness for this generator
|
Developers
void engineInit (int keysize,
SecureRandom random)
Initializes this key generator for a certain keysize, using the given source of randomness.
| Parameters | |
|---|---|
keysize |
int:
the keysize. This is an algorithm-specific metric,
specified in number of bits. |
random |
SecureRandom:
the source of randomness for this key generator |
| Throws | |
|---|---|
InvalidParameterException |
if the keysize is wrong or not supported. |