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.
Fields declared in interface java.security.PublicKey