ECPublicKeySpec (Java SE 9 & JDK 9 ) (original) (raw)

• java.lang.Object

• • java.security.spec.ECPublicKeySpec

• All Implemented Interfaces:
  [KeySpec](../../../java/security/spec/KeySpec.html "interface in java.security.spec")

public class ECPublicKeySpec
extends Object
implements KeySpec
This immutable class specifies an elliptic curve public key with its associated parameters.
Since:
1.5
See Also:
KeySpec, ECPoint, ECParameterSpec

• • Constructor Summary

  Constructors

  Constructor	Description
  ECPublicKeySpec​(ECPoint w,ECParameterSpec params)	Creates a new ECPublicKeySpec with the specified parameter values.

  • Method Summary

  All Methods Instance Methods Concrete Methods

  Modifier and Type	Method	Description
  ECParameterSpec	getParams​()	Returns the associated elliptic curve domain parameters.
  ECPoint	getW​()	Returns the public point W.

     * ### Methods inherited from class java.lang.[Object](../../../java/lang/Object.html "class in java.lang")  
     `[clone](../../../java/lang/Object.html#clone--), [equals](../../../java/lang/Object.html#equals-java.lang.Object-), [finalize](../../../java/lang/Object.html#finalize--), [getClass](../../../java/lang/Object.html#getClass--), [hashCode](../../../java/lang/Object.html#hashCode--), [notify](../../../java/lang/Object.html#notify--), [notifyAll](../../../java/lang/Object.html#notifyAll--), [toString](../../../java/lang/Object.html#toString--), [wait](../../../java/lang/Object.html#wait--), [wait](../../../java/lang/Object.html#wait-long-), [wait](../../../java/lang/Object.html#wait-long-int-)`

• • Constructor Detail

     * #### ECPublicKeySpec  
     public ECPublicKeySpec​([ECPoint](../../../java/security/spec/ECPoint.html "class in java.security.spec") w,  
                            [ECParameterSpec](../../../java/security/spec/ECParameterSpec.html "class in java.security.spec") params)  
     Creates a new ECPublicKeySpec with the specified parameter values.  
     Parameters:  
     `w` \- the public point.  
     `params` \- the associated elliptic curve domain parameters.  
     Throws:  
     `[NullPointerException](../../../java/lang/NullPointerException.html "class in java.lang")` \- if `w` or `params` is null.  
     `[IllegalArgumentException](../../../java/lang/IllegalArgumentException.html "class in java.lang")` \- if `w` is point at infinity, i.e. ECPoint.POINT\_INFINITY  

  • Method Detail

    * #### getW  
    public [ECPoint](../../../java/security/spec/ECPoint.html "class in java.security.spec") getW​()  
    Returns the public point W.  
    Returns:  
    the public point W.  
    * #### getParams  
    public [ECParameterSpec](../../../java/security/spec/ECParameterSpec.html "class in java.security.spec") getParams​()  
    Returns the associated elliptic curve domain parameters.  
    Returns:  
    the EC domain parameters.

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