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