XECPublicKey (Java SE 11 & JDK 11 )

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
  
  All Methods Instance Methods Abstract Methods
  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