# ECPublicKeySpec

public class **ECPublicKeySpec** extends [Object](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Object.html)  
implements [KeySpec](https://developers.google.com/j2objc/javadoc/jre/reference/java/security/spec/KeySpec.html) This immutable class specifies an elliptic curve public key with
its associated parameters.

##### See Also

- `https://developers.google.com/j2objc/javadoc/jre/reference/java/security/spec/KeySpec.html`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/security/spec/ECPoint.html`
- `https://developers.google.com/j2objc/javadoc/jre/reference/java/security/spec/ECParameterSpec.html`

### Public Constructor Summary

|---|---|
|   | [ECPublicKeySpec](https://developers.google.com/j2objc/javadoc/jre/reference/java/security/spec/ECPublicKeySpec.html#ECPublicKeySpec(java.security.spec.ECPoint,%20java.security.spec.ECParameterSpec))([ECPoint](https://developers.google.com/j2objc/javadoc/jre/reference/java/security/spec/ECPoint.html) w, [ECParameterSpec](https://developers.google.com/j2objc/javadoc/jre/reference/java/security/spec/ECParameterSpec.html) params) Creates a new ECPublicKeySpec with the specified parameter values. |

### Public Method Summary

|---|---|
| [ECParameterSpec](https://developers.google.com/j2objc/javadoc/jre/reference/java/security/spec/ECParameterSpec.html) | [getParams](https://developers.google.com/j2objc/javadoc/jre/reference/java/security/spec/ECPublicKeySpec.html#getParams())() Returns the associated elliptic curve domain parameters. |
| [ECPoint](https://developers.google.com/j2objc/javadoc/jre/reference/java/security/spec/ECPoint.html) | [getW](https://developers.google.com/j2objc/javadoc/jre/reference/java/security/spec/ECPublicKeySpec.html#getW())() Returns the public point W. |

### Inherited Method Summary

From class [java.lang.Object](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Object.html)

|---|---|
| [Object](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Object.html) | [clone](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Object.html#clone())() Creates and returns a copy of this `Object`. |
| boolean | [equals](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Object.html#equals(java.lang.Object))([Object](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Object.html) obj) Compares this instance with the specified object and indicates if they are equal. |
| void | [finalize](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Object.html#finalize())() Invoked when the garbage collector has detected that this instance is no longer reachable. |
| final [Class](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Class.html)\<?\> | [getClass](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Object.html#getClass())() Returns the unique instance of `https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Class.html` that represents this object's class. |
| int | [hashCode](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Object.html#hashCode())() Returns an integer hash code for this object. |
| final void | [notify](https://developers.google.com/j2objc/javadoc/jre/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. |
| final void | [notifyAll](https://developers.google.com/j2objc/javadoc/jre/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. |
| [String](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/String.html) | [toString](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Object.html#toString())() Returns a string containing a concise, human-readable description of this object. |
| final void | [wait](https://developers.google.com/j2objc/javadoc/jre/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. |
| final void | [wait](https://developers.google.com/j2objc/javadoc/jre/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. |
| final void | [wait](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/Object.html#wait())() Causes the calling thread to wait until another thread calls the `notify()` or `notifyAll()` method of this object. |

## Public Constructors

#### public
**ECPublicKeySpec**
([ECPoint](https://developers.google.com/j2objc/javadoc/jre/reference/java/security/spec/ECPoint.html) w, [ECParameterSpec](https://developers.google.com/j2objc/javadoc/jre/reference/java/security/spec/ECParameterSpec.html) params)

Creates a new ECPublicKeySpec with the specified
parameter values.

##### Parameters

| w | the public point. |
| params | the associated elliptic curve domain parameters. |
|---|---|

##### Throws

| [NullPointerException](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/NullPointerException.html) | if `w` or `params` is null. |
| [IllegalArgumentException](https://developers.google.com/j2objc/javadoc/jre/reference/java/lang/IllegalArgumentException.html) | if `w` is point at infinity, i.e. ECPoint.POINT_INFINITY |
|---|---|

## Public Methods

#### public [ECParameterSpec](https://developers.google.com/j2objc/javadoc/jre/reference/java/security/spec/ECParameterSpec.html)
**getParams**
()

Returns the associated elliptic curve domain
parameters.

##### Returns

- the EC domain parameters.

#### public [ECPoint](https://developers.google.com/j2objc/javadoc/jre/reference/java/security/spec/ECPoint.html)
**getW**
()

Returns the public point W.

##### Returns

- the public point W.