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- java.lang.Object
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- javax.crypto.spec.DHGenParameterSpec
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- 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
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Constructor Summary
Constructors Constructor and Description DHGenParameterSpec(int primeSize, int exponentSize)
Constructs a parameter set for the generation of Diffie-Hellman (system) parameters.
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Method Summary
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.
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Constructor Detail
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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 anAlgorithmParameterGenerator
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.
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Method Detail
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getPrimeSize
public int getPrimeSize()
Returns the size in bits of the prime modulus.- Returns:
- the size in bits of the prime modulus
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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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