Java Module java.base Package java.security.interfaces Interface XECKey（JDK11）

public interface XECKey

An interface for an elliptic curve public/private key as defined by RFC 7748. These keys are distinct from the keys represented by ECKey, and they are intended for use with algorithms based on RFC 7748 such as the XDH KeyAgreement algorithm. This interface allows access to the algorithm parameters associated with the key.