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`java.lang.Object`

`javax.crypto.spec.DHParameterSpec`

**Implemented Interfaces:**- AlgorithmParameterSpec

The base set of parameters necessary to perform Diffie-Hellman key
exchange. Each party in the key exchange shares these parameters.

Each set of parameters consists of a *base generator*
`g`

, a *prime modulus* `p`

, and an
optional length, in bits, of the private exponent.

See PKCS #3 - Diffie-Hellman Key Agreement Standard for more information.

**Since:**- 1.4

**See Also:**`KeyAgreement`

## Constructor Summary

`DHParameterSpec(BigInteger p, BigInteger g)`

- Create a new set of Diffie-Hellman parameters.

`DHParameterSpec(BigInteger p, BigInteger g, int l)`

- Create a new set of Diffie-Hellman parameters.

## Method Summary

`BigInteger`

`getG()`

- Get the base generator,
*g*.

`int`

`getL()`

- Get the length of the private exponent, in bits.

`BigInteger`

`getP()`

- Get the prime modulus,
*p*.

### Methods inherited from class java.lang.Object

`clone`

,`equals`

,`extends Object> getClass`

,`finalize`

,`hashCode`

,`notify`

,`notifyAll`

,`toString`

,`wait`

,`wait`

,`wait`

public DHParameterSpec(BigInteger p, BigInteger g)

Create a new set of Diffie-Hellman parameters.

Parameters:`p`

- The prime modulus.`g`

- The base generator.

public DHParameterSpec(BigInteger p, BigInteger g, int l)

Create a new set of Diffie-Hellman parameters.

Parameters:`p`

- The prime modulus.`g`

- The base generator.`l`

- The size of the private exponent, in bits.

public int getL()

Get the length of the private exponent, in bits.

Returns:- The length of the private exponent, in bits, or 0 if this has not been explicitly set.

DHParameterSpec.java -- Parameters for Diffie-Hellman keys.
Copyright (C) 2004 Free Software Foundation, Inc.
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