DHGenParameterSpec (Java SE 11 & JDK 11 ) (original) (raw)

• java.lang.Object

• • javax.crypto.spec.DHGenParameterSpec

• All Implemented Interfaces:
  [AlgorithmParameterSpec](../../../java/security/spec/AlgorithmParameterSpec.html "interface in java.security.spec")

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:
DHParameterSpec

• • Constructor Summary

  Constructors

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

  • Method Summary

  All Methods Instance Methods Concrete Methods

  Modifier and Type	Method	Description
  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 declared in class java.lang.[Object](../../../java/lang/Object.html "class in java.lang")  
     `[clone](../../../java/lang/Object.html#clone%28%29), [equals](../../../java/lang/Object.html#equals%28java.lang.Object%29), [finalize](../../../java/lang/Object.html#finalize%28%29), [getClass](../../../java/lang/Object.html#getClass%28%29), [hashCode](../../../java/lang/Object.html#hashCode%28%29), [notify](../../../java/lang/Object.html#notify%28%29), [notifyAll](../../../java/lang/Object.html#notifyAll%28%29), [toString](../../../java/lang/Object.html#toString%28%29), [wait](../../../java/lang/Object.html#wait%28%29), [wait](../../../java/lang/Object.html#wait%28long%29), [wait](../../../java/lang/Object.html#wait%28long,int%29)`

• • Constructor Detail

     * #### 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](../../../java/security/AlgorithmParameterGenerator.html "class in java.security") 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 Detail

    * #### 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)

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