DHGenParameterSpec

  • DHGenParameterSpec defines parameters for generating Diffie-Hellman system parameters, typically used by a central authority.

  • This class specifies the size of the prime modulus and the random exponent used in Diffie-Hellman key agreement.

  • A central authority generates these parameters and distributes them to parties who intend to agree on a secret key.

  • DHGenParameterSpec includes methods to retrieve the size of the prime modulus (getPrimeSize) and the random exponent (getExponentSize).

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

Public Constructor Summary

DHGenParameterSpec(int primeSize, int exponentSize)
Constructs a parameter set for the generation of Diffie-Hellman (system) parameters.

Public 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.

Inherited Method Summary

Public Constructors

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.

Public Methods

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)

public int getPrimeSize ()

Returns the size in bits of the prime modulus.

Returns
  • the size in bits of the prime modulus