ECParameterSpec
Stay organized with collections
Save and categorize content based on your preferences.
This immutable class specifies the set of domain parameters
used with elliptic curve cryptography (ECC).
Public Constructor Summary
Inherited Method Summary
From class
java.lang.Object
|
Object
|
clone()
Creates and returns a copy of this Object.
|
|
boolean
|
equals( Object obj)
Compares this instance with the specified object and indicates if they
are equal.
|
|
void
|
finalize()
Invoked when the garbage collector has detected that this instance is no longer reachable.
|
|
final
Class<?>
|
getClass()
Returns the unique instance of Class that represents this
object's class.
|
|
int
|
hashCode()
Returns an integer hash code for this object.
|
|
final
void
|
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.
|
|
final
void
|
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.
|
|
String
|
toString()
Returns a string containing a concise, human-readable description of this
object.
|
|
final
void
|
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.
|
|
final
void
|
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.
|
|
final
void
|
wait()
Causes the calling thread to wait until another thread calls the notify() or notifyAll() method of this object.
|
Public Constructors
public
ECParameterSpec
(EllipticCurve curve, ECPoint g, BigInteger n, int h)
Creates elliptic curve domain parameters based on the
specified values.
Parameters
| curve |
the elliptic curve which this parameter
defines. |
| g |
the generator which is also known as the base point. |
| n |
the order of the generator g. |
| h |
the cofactor. |
Public Methods
public
int
getCofactor
()
Returns the elliptic curve that this parameter defines.
Returns
- the elliptic curve that this parameter defines.
public
ECPoint
getGenerator
()
Returns the generator which is also known as the base point.
Returns
- the generator which is also known as the base point.
public
BigInteger
getOrder
()
Returns the order of the generator.
Returns
- the order of the generator.
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\u003eECParameterSpec\u003c/code\u003e defines the domain parameters used in Elliptic Curve Cryptography (ECC).\u003c/p\u003e\n"],["\u003cp\u003eIt includes the elliptic curve, generator (base point), order of the generator, and cofactor.\u003c/p\u003e\n"],["\u003cp\u003eThis class is immutable, meaning its values cannot be changed after creation.\u003c/p\u003e\n"],["\u003cp\u003eIt provides methods to access the curve, generator, order, and cofactor.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003eECParameterSpec\u003c/code\u003e is an implementation of \u003ccode\u003eAlgorithmParameterSpec\u003c/code\u003e.\u003c/p\u003e\n"]]],[],null,["public class **ECParameterSpec** extends [Object](../../../../reference/java/lang/Object.html) \nimplements [AlgorithmParameterSpec](../../../../reference/java/security/spec/AlgorithmParameterSpec.html) \nThis immutable class specifies the set of domain parameters\nused with elliptic curve cryptography (ECC). \n\nSee Also\n\n- [AlgorithmParameterSpec](../../../../reference/java/security/spec/AlgorithmParameterSpec.html) \n\nPublic Constructor Summary\n\n|---|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| | [ECParameterSpec](../../../../reference/java/security/spec/ECParameterSpec.html#ECParameterSpec(java.security.spec.EllipticCurve,%20java.security.spec.ECPoint,%20java.math.BigInteger,%20int))([EllipticCurve](../../../../reference/java/security/spec/EllipticCurve.html) curve, [ECPoint](../../../../reference/java/security/spec/ECPoint.html) g, BigInteger n, int h) Creates elliptic curve domain parameters based on the specified values. |\n\nPublic Method Summary\n\n|------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| int | [getCofactor](../../../../reference/java/security/spec/ECParameterSpec.html#getCofactor())() Returns the cofactor. |\n| [EllipticCurve](../../../../reference/java/security/spec/EllipticCurve.html) | [getCurve](../../../../reference/java/security/spec/ECParameterSpec.html#getCurve())() Returns the elliptic curve that this parameter defines. |\n| [ECPoint](../../../../reference/java/security/spec/ECPoint.html) | [getGenerator](../../../../reference/java/security/spec/ECParameterSpec.html#getGenerator())() Returns the generator which is also known as the base point. |\n| BigInteger | [getOrder](../../../../reference/java/security/spec/ECParameterSpec.html#getOrder())() Returns the order of the generator. |\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**ECParameterSpec**\n([EllipticCurve](../../../../reference/java/security/spec/EllipticCurve.html) curve, [ECPoint](../../../../reference/java/security/spec/ECPoint.html) g, BigInteger n, int h) \nCreates elliptic curve domain parameters based on the\nspecified values. \n\nParameters\n\n| curve | the elliptic curve which this parameter defines. |\n| g | the generator which is also known as the base point. |\n| n | the order of the generator `g`. |\n| h | the cofactor. |\n|-------|------------------------------------------------------|\n\nThrows\n\n| [NullPointerException](../../../../reference/java/lang/NullPointerException.html) | if `curve`, `g`, or `n` is null. |\n| [IllegalArgumentException](../../../../reference/java/lang/IllegalArgumentException.html) | if `n` or `h` is not positive. |\n|-------------------------------------------------------------------------------------------|----------------------------------|\n\nPublic Methods \n\npublic int\n**getCofactor**\n() \nReturns the cofactor. \n\nReturns\n\n- the cofactor. \n\npublic [EllipticCurve](../../../../reference/java/security/spec/EllipticCurve.html)\n**getCurve**\n() \nReturns the elliptic curve that this parameter defines. \n\nReturns\n\n- the elliptic curve that this parameter defines. \n\npublic [ECPoint](../../../../reference/java/security/spec/ECPoint.html)\n**getGenerator**\n() \nReturns the generator which is also known as the base point. \n\nReturns\n\n- the generator which is also known as the base point. \n\npublic BigInteger\n**getOrder**\n() \nReturns the order of the generator. \n\nReturns\n\n- the order of the generator."]]
