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

    Constructors
    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
    Modifier and Type
    Method
    Description
    protected Object
    clone()
    Creates and returns a copy of this object.
    boolean
    equals(Object obj)
    Indicates whether some other object is "equal to" this one.
    protected void
    finalize()
    Deprecated, for removal: This API element is subject to removal in a future version.
    Finalization is deprecated and subject to removal in a future release.
    final Class<?>
    getClass()
    Returns the runtime class of this Object.
    int
    hashCode()
    Returns a hash code value for this object.
    final void
    notify()
    Wakes up a single thread that is waiting on this object's monitor.
    final void
    notifyAll()
    Wakes up all threads that are waiting on this object's monitor.
    String
    toString()
    Returns a string representation of the object.
    final void
    wait()
    Causes the current thread to wait until it is awakened, typically by being notified or interrupted.
    final void
    wait(long timeoutMillis)
    Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
    final void
    wait(long timeoutMillis, int nanos)
    Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.

  • 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)