com.ibm.crypto.fips.provider
Class DHKeyPairGenerator
- java.lang.Object
java.security.KeyPairGeneratorSpi
com.ibm.crypto.fips.provider.DHKeyPairGenerator
All implemented interfaces:
- public final class DHKeyPairGenerator
- extends java.security.KeyPairGeneratorSpi
- implements AlgorithmStatus
This key pair generator may be initialized in two different ways:
- By providing the size in bits of the prime modulus. This will be used to create a prime modulus and base generator, which will then be used to create the Diffie-Hellman key pair. The default size of the prime modulus is 2048 bits.
- By providing a prime modulus and base generator.
Author:
Jan Luehe, John Peck
See Also:
KeyPairGenerator
Constructor Summary
Constructor and Description |
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DHKeyPairGenerator()
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Method Summary
Modifier and Type | Method and Description |
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generateKeyPair()
Generates a key pair.
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initialize(java.security.spec.AlgorithmParameterSpec params,java.security.SecureRandom random)
Initializes this key pair generator for the specified parameter
set and source of randomness.
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initialize(int keysize,java.security.SecureRandom random)
Initializes this key pair generator for a certain keysize and source of
randomness.
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internalGenerateKeyPair()
Generates a key pair.
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internalInitialize(java.security.spec.AlgorithmParameterSpec params,java.security.SecureRandom random)
Initializes this key pair generator for the specified parameter
set and source of randomness.
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internalInitialize(int keysize,java.security.SecureRandom random)
Initializes this key pair generator for a certain keysize and source of
randomness.
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isFipsApproved()
This function allows an application to verify the the algorithm is
FIPS approved.
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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
DHKeyPairGenerator
- public DHKeyPairGenerator()
Method Detail
initialize
- public void initialize(int keysize,
- java.security.SecureRandom random)
Initializes this key pair generator for a certain keysize and source of
randomness.
The keysize is specified as the size in bits of the prime modulus.
Specified by:
initialize
in class java.security.KeyPairGeneratorSpi
Parameters:
keysize
- the keysize (size of prime modulus) in bits random
- the source of randomness internalInitialize
- protected void internalInitialize( int keysize,
- java.security.SecureRandom random)
Initializes this key pair generator for a certain keysize and source of
randomness.
The keysize is specified as the size in bits of the prime modulus.
Parameters:
keysize
- the keysize (size of prime modulus) in bits random
- the source of randomness isFipsApproved
- public boolean isFipsApproved()
This function allows an application to verify the the algorithm is
FIPS approved.
Specified by:
isFipsApproved
in interface AlgorithmStatus
See Also:
initialize
- public void initialize(java.security.spec.AlgorithmParameterSpec params,
- java.security.SecureRandom random)
- throws java.security.InvalidAlgorithmParameterException
Initializes this key pair generator for the specified parameter
set and source of randomness.
The given parameter set contains the prime modulus, the base generator, and optionally the requested size in bits of the random exponent (private value).
Overrides:
initialize
in class java.security.KeyPairGeneratorSpi
Parameters:
params
- the parameter set used to generate the key pair random
- the source of randomness Throws:
java.security.InvalidAlgorithmParameterException
- if the given parameters
are inappropriate for this key pair generator internalInitialize
- protected void internalInitialize( java.security.spec.AlgorithmParameterSpec params,
- java.security.SecureRandom random)
- throws java.security.InvalidAlgorithmParameterException
Initializes this key pair generator for the specified parameter
set and source of randomness.
The given parameter set contains the prime modulus, the base generator, and optionally the requested size in bits of the random exponent (private value).
Parameters:
params
- the parameter set used to generate the key pair random
- the source of randomness Throws:
java.security.InvalidAlgorithmParameterException
- if the given parameters
are inappropriate for this key pair generator generateKeyPair
- public java.security.KeyPair generateKeyPair( )
Generates a key pair.
Specified by:
generateKeyPair
in class java.security.KeyPairGeneratorSpi
Returns:
the new key pair
internalGenerateKeyPair
- protected java.security.KeyPair internalGenerateKeyPair( )
Generates a key pair.
Returns:
the new key pair