Module java.base

Package java.security.interfaces

Interface XECPublicKey

All Superinterfaces:

Key, PublicKey, Serializable, XECKey

public interface XECPublicKey
extends XECKey, PublicKey

An interface for an elliptic curve public key as defined by RFC 7748. These keys are distinct from the keys represented by ECPublicKey, and they are intended for use with algorithms based on RFC 7748 such as the XDH KeyAgreement algorithm. An XEC public key is a particular point on the curve, which is represented using only its u-coordinate as described in RFC 7748. 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

Field Summary

Fields declared in interface java.security.PublicKey

serialVersionUID

Method Summary

Modifier and Type	Method	Description
BigInteger	getU()	Get the u coordinate of the point.

Methods declared in interface java.security.Key

getAlgorithm, getEncoded, getFormat

Methods declared in interface java.security.interfaces.XECKey

getParams

Method Detail

getU

BigInteger getU()

Get the u coordinate of the point.

Returns:

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