DHGenParameterSpec (Java Platform SE 6)

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Java™ Platform
Standard Ed. 6

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javax.crypto.spec
Class DHGenParameterSpec

java.lang.Object
 extended by javax.crypto.spec.DHGenParameterSpec

All Implemented Interfaces:: AlgorithmParameterSpec

public class DHGenParameterSpec
extends Object
implements AlgorithmParameterSpec
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
`DHGenParameterSpec(int primeSize, int exponentSize)` Constructs a parameter set for the generation of Diffie-Hellman (system) parameters.

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.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

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 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)