Class XECPrivateKeySpec

java.lang.Object
java.security.spec.XECPrivateKeySpec
All Implemented Interfaces:
KeySpec
public class XECPrivateKeySpec extends Object implements KeySpec
A class representing elliptic curve private keys as defined in RFC 7748, including the curve and other algorithm parameters. The private key is represented as an encoded scalar value. The decoding procedure defined in the RFC includes an operation that forces certain bits of the key to either 1 or 0. This operation is known as "pruning" or "clamping" the private key. All arrays in this spec are unpruned, and implementations will need to prune the array before using it in any numerical operations.
Since:
11

  • Constructor Summary

    Constructors
    Constructor
    Description
    XECPrivateKeySpec(AlgorithmParameterSpec params, byte[] scalar)
    Construct a private key spec using the supplied parameters and encoded scalar value.

  • Method Summary

    Modifier and Type
    Method
    Description
    AlgorithmParameterSpec
    getParams()
    Get the algorithm parameters that define the curve and other settings.
    byte[]
    getScalar()
    Get the scalar value encoded as an unpruned byte array.

    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

    • XECPrivateKeySpec

      public XECPrivateKeySpec(AlgorithmParameterSpec params, byte[] scalar)
      Construct a private key spec using the supplied parameters and encoded scalar value.
      Parameters:
      params - the algorithm parameters
      scalar - the unpruned encoded scalar value. This array is copied to protect against subsequent modification.
      Throws:
      NullPointerException - if params or scalar is null.

  • Method Details

    • getParams

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

    • getScalar

      public byte[] getScalar()
      Get the scalar value encoded as an unpruned byte array. A new copy of the array is returned each time this method is called.
      Returns:
      the unpruned encoded scalar value