Module java.base

Class DHGenParameterSpec

java.lang.Object
javax.crypto.spec.DHGenParameterSpec
All Implemented Interfaces:
AlgorithmParameterSpec

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.

Since:
1.4
See Also:
  • 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 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.
  • 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)