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 Summary

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

Method Summary

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 Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

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)

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https://docs.oracle.com/en/java/javase/25/docs/api/java.base/javax/crypto/spec/DHGenParameterSpec.html