javax.crypto.spec
Class DHGenParameterSpec
java.lang.Object
|
+--javax.crypto.spec.DHGenParameterSpec
- public class DHGenParameterSpec
- extends Object
- implements AlgorithmParameterSpec
This class specifies the set of parameters used for generating
Diffie-Hellman (system) parameters for use in Diffie-Hellman key
agreement. This is typically done by a central authority.
The central authority, after computing the parameters, must send
this information to the parties looking to agree on a secret key.
- See Also:
AlgorithmParameterSpec
,
AlgorithmParameterGenerator
,
DHParameterSpec
Constructor Summary |
DHGenParameterSpec(int primeSize,
int exponentSize)
Constructs a parameter set for the generation of Diffie-Hellman (system)
parameters. |
Method Summary |
int |
getExponentSize()
Returns the size in bits of the random exponent (private value). |
int |
getPrimeSize()
Returns the size in bits of the prime modulus. |
Methods inherited from class java.lang.Object |
clone,
equals,
finalize,
getClass,
hashCode,
notify,
notifyAll,
toString,
wait,
wait,
wait |
DHGenParameterSpec
public DHGenParameterSpec(int primeSize,
int exponentSize)
- Constructs a parameter set for the generation of Diffie-Hellman (system)
parameters.
The constructed parameter set can be used to initialize an
AlgorithmParameterGenerator object for the generation of Diffie-Hellman parameters.
- Parameters:
primeSize
- the size (in bits) of the prime modulus.exponentSize
- the size (in bits) of the random exponent.
getPrimeSize
public int getPrimeSize()
- Returns the size in bits of the prime modulus.
- Returns:
- the size in bits of the prime modulus
getExponentSize
public int getExponentSize()
- Returns the size in bits of the random exponent (private value).
- Returns:
- the size in bits of the random exponent (private value)