DHGenParameterSpec
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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.
Public Constructor Summary
|
|
DHGenParameterSpec(int primeSize, int exponentSize)
Constructs a parameter set for the generation of Diffie-Hellman
(system) parameters.
|
Public Method Summary
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int
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getExponentSize()
Returns the size in bits of the random exponent (private value).
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int
|
getPrimeSize()
Returns the size in bits of the prime modulus.
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Inherited Method Summary
From class
java.lang.Object
|
Object
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clone()
Creates and returns a copy of this Object.
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boolean
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equals( Object obj)
Compares this instance with the specified object and indicates if they
are equal.
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void
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finalize()
Invoked when the garbage collector has detected that this instance is no longer reachable.
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final
Class<?>
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getClass()
Returns the unique instance of Class that represents this
object's class.
|
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int
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hashCode()
Returns an integer hash code for this object.
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final
void
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notify()
Causes a thread which is waiting on this object's monitor (by means of
calling one of the wait() methods) to be woken up.
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final
void
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notifyAll()
Causes all threads which are waiting on this object's monitor (by means
of calling one of the wait() methods) to be woken up.
|
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String
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toString()
Returns a string containing a concise, human-readable description of this
object.
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final
void
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wait(long timeout, int nanos)
Causes the calling thread to wait until another thread calls the notify() or notifyAll() method of this object or until the
specified timeout expires.
|
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final
void
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wait(long timeout)
Causes the calling thread to wait until another thread calls the notify() or notifyAll() method of this object or until the
specified timeout expires.
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final
void
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wait()
Causes the calling thread to wait until another thread calls the notify() or notifyAll() method of this object.
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Public Constructors
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.
|
Public Methods
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)
public
int
getPrimeSize
()
Returns the size in bits of the prime modulus.
Returns
- the size in bits of the prime modulus
Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License, and code samples are licensed under the Apache 2.0 License. For details, see the Google Developers Site Policies. Java is a registered trademark of Oracle and/or its affiliates.
Last updated 2024-07-10 UTC.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2024-07-10 UTC."],[[["\u003cp\u003e\u003ccode\u003eDHGenParameterSpec\u003c/code\u003e defines parameters for generating Diffie-Hellman system parameters, typically used by a central authority.\u003c/p\u003e\n"],["\u003cp\u003eThis class specifies the size of the prime modulus and the random exponent used in Diffie-Hellman key agreement.\u003c/p\u003e\n"],["\u003cp\u003eA central authority generates these parameters and distributes them to parties who intend to agree on a secret key.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003eDHGenParameterSpec\u003c/code\u003e includes methods to retrieve the size of the prime modulus (\u003ccode\u003egetPrimeSize\u003c/code\u003e) and the random exponent (\u003ccode\u003egetExponentSize\u003c/code\u003e).\u003c/p\u003e\n"]]],[],null,["public class **DHGenParameterSpec** extends [Object](../../../../reference/java/lang/Object.html) \nimplements [AlgorithmParameterSpec](../../../../reference/java/security/spec/AlgorithmParameterSpec.html) \nThis class specifies the set of parameters used for generating\nDiffie-Hellman (system) parameters for use in Diffie-Hellman key\nagreement. This is typically done by a central\nauthority.\n\nThe central authority, after computing the parameters, must send this\ninformation to the parties looking to agree on a secret key. \n\nSee Also\n\n- [DHParameterSpec](../../../../reference/javax/crypto/spec/DHParameterSpec.html) \n\nPublic Constructor Summary\n\n|---|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| | [DHGenParameterSpec](../../../../reference/javax/crypto/spec/DHGenParameterSpec.html#DHGenParameterSpec(int,%20int))(int primeSize, int exponentSize) Constructs a parameter set for the generation of Diffie-Hellman (system) parameters. |\n\nPublic Method Summary\n\n|-----|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| int | [getExponentSize](../../../../reference/javax/crypto/spec/DHGenParameterSpec.html#getExponentSize())() Returns the size in bits of the random exponent (private value). |\n| int | [getPrimeSize](../../../../reference/javax/crypto/spec/DHGenParameterSpec.html#getPrimeSize())() Returns the size in bits of the prime modulus. |\n\nInherited Method Summary \nFrom class [java.lang.Object](../../../../reference/java/lang/Object.html) \n\n|----------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| [Object](../../../../reference/java/lang/Object.html) | [clone](../../../../reference/java/lang/Object.html#clone())() Creates and returns a copy of this `Object`. |\n| boolean | [equals](../../../../reference/java/lang/Object.html#equals(java.lang.Object))([Object](../../../../reference/java/lang/Object.html) obj) Compares this instance with the specified object and indicates if they are equal. |\n| void | [finalize](../../../../reference/java/lang/Object.html#finalize())() Invoked when the garbage collector has detected that this instance is no longer reachable. |\n| final [Class](../../../../reference/java/lang/Class.html)\\\u003c?\\\u003e | [getClass](../../../../reference/java/lang/Object.html#getClass())() Returns the unique instance of [Class](../../../../reference/java/lang/Class.html) that represents this object's class. |\n| int | [hashCode](../../../../reference/java/lang/Object.html#hashCode())() Returns an integer hash code for this object. |\n| final void | [notify](../../../../reference/java/lang/Object.html#notify())() Causes a thread which is waiting on this object's monitor (by means of calling one of the `wait()` methods) to be woken up. |\n| final void | [notifyAll](../../../../reference/java/lang/Object.html#notifyAll())() Causes all threads which are waiting on this object's monitor (by means of calling one of the `wait()` methods) to be woken up. |\n| [String](../../../../reference/java/lang/String.html) | [toString](../../../../reference/java/lang/Object.html#toString())() Returns a string containing a concise, human-readable description of this object. |\n| final void | [wait](../../../../reference/java/lang/Object.html#wait(long,%20int))(long timeout, int nanos) Causes the calling thread to wait until another thread calls the `notify()` or `notifyAll()` method of this object or until the specified timeout expires. |\n| final void | [wait](../../../../reference/java/lang/Object.html#wait(long))(long timeout) Causes the calling thread to wait until another thread calls the `notify()` or `notifyAll()` method of this object or until the specified timeout expires. |\n| final void | [wait](../../../../reference/java/lang/Object.html#wait())() Causes the calling thread to wait until another thread calls the `notify()` or `notifyAll()` method of this object. |\n\nPublic Constructors \n\npublic\n**DHGenParameterSpec**\n(int primeSize, int exponentSize) \nConstructs a parameter set for the generation of Diffie-Hellman\n(system) parameters. The constructed parameter set can be used to\ninitialize an\n[AlgorithmParameterGenerator](../../../../reference/java/security/AlgorithmParameterGenerator.html)\nobject for the generation of Diffie-Hellman parameters. \n\nParameters\n\n| primeSize | the size (in bits) of the prime modulus. |\n| exponentSize | the size (in bits) of the random exponent. |\n|--------------|--------------------------------------------|\n\nPublic Methods \n\npublic int\n**getExponentSize**\n() \nReturns the size in bits of the random exponent (private value). \n\nReturns\n\n- the size in bits of the random exponent (private value) \n\npublic int\n**getPrimeSize**\n() \nReturns the size in bits of the prime modulus. \n\nReturns\n\n- the size in bits of the prime modulus"]]
