com.ibm.crypto.fips.provider
Class DESedeKeyGenerator
- java.lang.Object
javax.crypto.KeyGeneratorSpi
com.ibm.crypto.fips.provider.DESedeKeyGenerator
All implemented interfaces:
- public final class DESedeKeyGenerator
- extends javax.crypto.KeyGeneratorSpi
- implements AlgorithmStatus
Constructor Summary
Constructor and Description |
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DESedeKeyGenerator()
Verify the JCE framework in the constructor.
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Method Summary
Modifier and Type | Method and Description |
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engineGenerateKey()
Generates the Triple DES key.
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engineInit(java.security.spec.AlgorithmParameterSpec params,java.security.SecureRandom random)
Initializes this key generator with the specified parameter
set and a user-provided source of randomness.
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engineInit(int keysize,java.security.SecureRandom random)
Initializes this key generator for a certain keysize, using the given
source of randomness.
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engineInit(java.security.SecureRandom random)
Initializes this key generator.
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internalGenerateKey()
Generates the Triple DES key.
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internalInit(java.security.spec.AlgorithmParameterSpec params,java.security.SecureRandom random)
Initializes this key generator with the specified parameter
set and a user-provided source of randomness.
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internalInit(int keysize,java.security.SecureRandom random)
Initializes this key generator for a certain keysize, using the given
source of randomness.
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internalInit(java.security.SecureRandom random)
Initializes this key generator.
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isFipsApproved()
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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 |
Constructor Detail
DESedeKeyGenerator
- public DESedeKeyGenerator()
Verify the JCE framework in the constructor.
Throws:
java.lang.SecurityException
- if fails to verify
the JCE framework. Method Detail
isFipsApproved
- public boolean isFipsApproved()
Description copied from interface:
AlgorithmStatus
Module identifies if the cryptographic operation (algorithm) is FIPS certified
Specified by:
isFipsApproved
in interface AlgorithmStatus
See Also:
engineInit
- protected void engineInit(java.security.SecureRandom random)
Initializes this key generator.
Specified by:
engineInit
in class javax.crypto.KeyGeneratorSpi
Parameters:
random
- the source of randomness for this generator Throws:
FIPSRuntimeException
- if SelfTest.isFipsRunnable returns false. internalInit
- protected void internalInit(java.security.SecureRandom random)
Initializes this key generator.
Parameters:
random
- the source of randomness for this generator engineInit
- protected void engineInit(java.security.spec.AlgorithmParameterSpec params,
- java.security.SecureRandom random)
- throws java.security.InvalidAlgorithmParameterException
Initializes this key generator with the specified parameter
set and a user-provided source of randomness.
Specified by:
engineInit
in class javax.crypto.KeyGeneratorSpi
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 FIPSRuntimeException
- if SelfTest.isFipsRunnable returns false. internalInit
- protected void internalInit(java.security.spec.AlgorithmParameterSpec params,
- java.security.SecureRandom random)
- throws java.security.InvalidAlgorithmParameterException
Initializes this 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 void engineInit(int keysize,
- java.security.SecureRandom random)
Initializes this key generator for a certain keysize, using the given
source of randomness.
Specified by:
engineInit
in class javax.crypto.KeyGeneratorSpi
Parameters:
keysize
- the keysize. This is an algorithm-specific
metric specified in number of bits. A keysize with 112 bits of entropy
corresponds to a Triple DES key with 2 intermediate keys, and a keysize
with 168 bits of entropy corresponds to a Triple DES key with 3
intermediate keys. random
- the source of randomness for this key generator Throws:
FIPSRuntimeException
- if SelfTest.isFipsRunnable returns false. internalInit
- protected void internalInit(int keysize,
- java.security.SecureRandom random)
Initializes this key generator for a certain keysize, using the given
source of randomness.
Parameters:
keysize
- the keysize. This is an algorithm-specific
metric specified in number of bits. A keysize with 112 bits of entropy
corresponds to a Triple DES key with 2 intermediate keys, and a keysize
with 168 bits of entropy corresponds to a Triple DES key with 3
intermediate keys. random
- the source of randomness for this key generator engineGenerateKey
- protected javax.crypto.SecretKey engineGenerateKey( )
Generates the Triple DES key.
Specified by:
engineGenerateKey
in class javax.crypto.KeyGeneratorSpi
Returns:
the new Triple DES key
Throws:
FIPSRuntimeException
- if SelfTest.isFipsRunnable returns false. internalGenerateKey
- protected javax.crypto.SecretKey internalGenerateKey( )
Generates the Triple DES key.
Returns:
the new Triple DES key