Class XECPublicKeySpec

java.lang.Object
java.security.spec.XECPublicKeySpec
All Implemented Interfaces:
KeySpec
public class XECPublicKeySpec extends Object implements KeySpec
A class representing elliptic curve public keys as defined in RFC 7748, including the curve and other algorithm parameters. The public key is a particular point on the curve, which is represented using only its u-coordinate. A u-coordinate is an element of the field of integers modulo some value that is determined by the algorithm parameters. This field element is represented by a BigInteger which may hold any value. That is, the BigInteger is not restricted to the range of canonical field elements.
Since:
11

  • Constructor Summary

    Constructors
    Constructor
    Description
    XECPublicKeySpec(AlgorithmParameterSpec params, BigInteger u)
    Construct a public key spec using the supplied parameters and u coordinate.

  • Method Summary

    Modifier and Type
    Method
    Description
    AlgorithmParameterSpec
    getParams()
    Get the algorithm parameters that define the curve and other settings.
    BigInteger
    getU()
    Get the u coordinate of the point.

    Methods declared in class Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    Modifier and Type
    Method
    Description
    protected Object
    clone()
    Answers a new instance of the same class as the receiver, whose slots have been filled in with the values in the slots of the receiver.
    boolean
    equals(Object o)
    Compares the argument to the receiver, and answers true if they represent the same object using a class specific comparison.
    protected void
    finalize()
    Deprecated, for removal: This API element is subject to removal in a future version.
    May cause performance issues, deadlocks and hangs.
    final Class<? extends Object>
    getClass()
    Answers the unique instance of java.lang.Class which represents the class of the receiver.
    int
    hashCode()
    Answers an integer hash code for the receiver.
    final void
    notify()
    Causes one thread which is waiting on the receiver to be made ready to run.
    final void
    notifyAll()
    Causes all threads which are waiting on the receiver to be made ready to run.
    String
    toString()
    Answers a string containing a concise, human-readable description of the receiver.
    final void
    wait()
    Causes the thread which sent this message to be made not ready to run pending some change in the receiver (as indicated by notify or notifyAll).
    final void
    wait(long time)
    Causes the thread which sent this message to be made not ready to run either pending some change in the receiver (as indicated by notify or notifyAll) or the expiration of the timeout.
    final void
    wait(long time, int frac)
    Causes the thread which sent this message to be made not ready to run either pending some change in the receiver (as indicated by notify or notifyAll) or the expiration of the timeout.

  • Constructor Details

    • XECPublicKeySpec

      public XECPublicKeySpec(AlgorithmParameterSpec params, BigInteger u)
      Construct a public key spec using the supplied parameters and u coordinate.
      Parameters:
      params - the algorithm parameters
      u - the u-coordinate of the point, represented using a BigInteger which may hold any value
      Throws:
      NullPointerException - if params or u is null.

  • Method Details

    • getParams

      public AlgorithmParameterSpec getParams()
      Get the algorithm parameters that define the curve and other settings.
      Returns:
      the parameters

    • getU

      public BigInteger getU()
      Get the u coordinate of the point.
      Returns:
      the u-coordinate, represented using a BigInteger which may hold any value