java.lang.Object
javax.crypto.spec.DHGenParameterSpec
- All Implemented Interfaces:
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.
- Since:
- 1.4
- See Also:
-
Constructor Summary
ConstructorDescriptionDHGenParameterSpec
(int primeSize, int exponentSize) Constructs a parameter set for the generation of Diffie-Hellman (system) parameters. -
Method Summary
Modifier and TypeMethodDescriptionint
Returns the size in bits of the random exponent (private value).int
Returns the size in bits of the prime modulus.
-
Constructor Details
-
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 anAlgorithmParameterGenerator
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.
-
-
Method Details
-
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)
-