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ECParameterSpec

public class ECParameterSpec
extends Object implements AlgorithmParameterSpec

java.lang.Object
↳	java.security.spec.ECParameterSpec

This immutable class specifies the set of domain parameters used with elliptic curve cryptography (ECC).

See also:

AlgorithmParameterSpec

Summary

Public constructors
`ECParameterSpec(EllipticCurve curve, ECPoint g, BigInteger n, int h)` Creates elliptic curve domain parameters based on the specified values.

Public methods
`int`	`getCofactor()` Returns the cofactor.
`EllipticCurve`	`getCurve()` Returns the elliptic curve that this parameter defines.
`ECPoint`	`getGenerator()` Returns the generator which is also known as the base point.
`BigInteger`	`getOrder()` Returns the order of the generator.

Inherited methods

From class


        
          java.lang.Object

`Object`	`clone()` Creates and returns a copy of this object.
`boolean`	`equals(Object obj)` Indicates whether some other object is "equal to" this one.
`void`	`finalize()` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
`final Class<?>`	`getClass()` Returns the runtime class of this `Object`.
`int`	`hashCode()` Returns a hash code value for the object.
`final void`	`notify()` Wakes up a single thread that is waiting on this object's monitor.
`final void`	`notifyAll()` Wakes up all threads that are waiting on this object's monitor.
`String`	`toString()` Returns a string representation of the object.
`final void`	`wait(long timeout, int nanos)` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object, or some other thread interrupts the current thread, or a certain amount of real time has elapsed.
`final void`	`wait(long timeout)` Causes the current thread to wait until either another thread invokes the `notify()` method or the `notifyAll()` method for this object, or a specified amount of time has elapsed.
`final void`	`wait()` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object.

Public constructors

ECParameterSpec

public ECParameterSpec (EllipticCurve curve, 
                ECPoint g, 
                BigInteger n, 
                int h)

Creates elliptic curve domain parameters based on the specified values.

Parameters
`curve`	`EllipticCurve`: the elliptic curve which this parameter defines.
`g`	`ECPoint`: the generator which is also known as the base point.
`n`	`BigInteger`: the order of the generator `g`.
`h`	`int`: the cofactor.

Throws
`NullPointerException`	if `curve`, `g`, or `n` is null.
`IllegalArgumentException`	if `n` or `h` is not positive.

Public methods

getCofactor

public int getCofactor ()

Returns the cofactor.

Returns
`int`	the cofactor.

getCurve

public EllipticCurve getCurve ()

Returns the elliptic curve that this parameter defines.

Returns
`EllipticCurve`	the elliptic curve that this parameter defines.

getGenerator

public ECPoint getGenerator ()

Returns the generator which is also known as the base point.

Returns
`ECPoint`	the generator which is also known as the base point.

getOrder

public BigInteger getOrder ()

Returns the order of the generator.

Returns
`BigInteger`	the order of the generator.

Interfaces

Classes

Exceptions

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ECParameterSpec

Summary

Public constructors

Public methods

Inherited methods

Public constructors

ECParameterSpec

Public methods

getCofactor

getCurve

getGenerator

getOrder