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:
DHParameterSpec
Constructors
| Constructor and Description |
|---|
DHGenParameterSpec(int primeSize,
int exponentSize) Constructs a parameter set for the generation of Diffie-Hellman (system) parameters. |
Methods
| Modifier and Type | Method and 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 inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait Constructors
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.
Methods
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/javase/8/docs/api/javax/crypto/spec/DHGenParameterSpec.html