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Added in API level 1

Summary: Ctors | Methods | Inherited Methods

ECPublicKeySpec

public class ECPublicKeySpec
extends Object implements KeySpec

java.lang.Object
↳	java.security.spec.ECPublicKeySpec

This immutable class specifies an elliptic curve public key with its associated parameters.

See also:

Summary

Public constructors
`ECPublicKeySpec(ECPoint w, ECParameterSpec params)` Creates a new ECPublicKeySpec with the specified parameter values.

Public methods
`ECParameterSpec`	`getParams()` Returns the associated elliptic curve domain parameters.
`ECPoint`	`getW()` Returns the public point W.

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 timeoutMillis, int nanos)` Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
`final void`	`wait(long timeoutMillis)` Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
`final void`	`wait()` Causes the current thread to wait until it is awakened, typically by being notified or interrupted.

Public constructors

ECPublicKeySpec

Added in API level 1

public ECPublicKeySpec (ECPoint w, 
                ECParameterSpec params)

Creates a new ECPublicKeySpec with the specified parameter values.

Parameters
`w`	`ECPoint`: the public point.
`params`	`ECParameterSpec`: the associated elliptic curve domain parameters.

Throws
`IllegalArgumentException`	if `w` is point at infinity, i.e. ECPoint.POINT_INFINITY
`NullPointerException`	if `w` or `params` is null.

Public methods

getParams

Added in API level 1

public ECParameterSpec getParams ()

Returns the associated elliptic curve domain parameters.

Returns
`ECParameterSpec`	the EC domain parameters.

getW

Added in API level 1

public ECPoint getW ()

Returns the public point W.

Returns
`ECPoint`	the public point W.

Content and code samples on this page are subject to the licenses described in the Content License. Java and OpenJDK are trademarks or registered trademarks of Oracle and/or its affiliates.

Last updated 2026-08-03 UTC.

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