XECPublicKeySpec

public class XECPublicKeySpec
extends Object implements KeySpec

java.lang.Object
   ↳ java.security.spec.XECPublicKeySpec


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.

Summary

Public constructors

XECPublicKeySpec(AlgorithmParameterSpec params, BigInteger u)

Construct a public key spec using the supplied parameters and u coordinate.

Public methods

AlgorithmParameterSpec getParams()

Get the algorithm parameters that define the curve and other settings.

BigInteger getU()

Get the u coordinate of the point.

Inherited methods

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

XECPublicKeySpec

Added in API level 33
public XECPublicKeySpec (AlgorithmParameterSpec params, 
                BigInteger u)

Construct a public key spec using the supplied parameters and u coordinate.

Parameters
params AlgorithmParameterSpec: the algorithm parameters

u BigInteger: the u-coordinate of the point, represented using a BigInteger which may hold any value

Throws
NullPointerException if params or u is null.

Public methods

getParams

Added in API level 33
public AlgorithmParameterSpec getParams ()

Get the algorithm parameters that define the curve and other settings.

Returns
AlgorithmParameterSpec the parameters

getU

Added in API level 33
public BigInteger getU ()

Get the u coordinate of the point.

Returns
BigInteger the u-coordinate, represented using a BigInteger which may hold any value