Interface XECPublicKey

All Superinterfaces:
AsymmetricKey, DEREncodablePREVIEW, 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 PublicKey

    serialVersionUID
    Modifier and Type
    Field
    Description
    static final long
    serialVersionUID
    Deprecated.
    A serialVersionUID field in an interface is ineffectual.

  • Method Summary

    Modifier and Type
    Method
    Description
    default AlgorithmParameterSpec
    getParams()
    Returns the parameters associated with this key.
    BigInteger
    getU()
    Get the u coordinate of the point.

    Methods declared in interface Key

    getAlgorithm, getEncoded, getFormat
    Modifier and Type
    Method
    Description
    String
    getAlgorithm()
    Returns the standard algorithm name for this key.
    byte[]
    getEncoded()
    Returns the key in its primary encoding format, or null if this key does not support encoding.
    String
    getFormat()
    Returns the name of the primary encoding format of this key, or null if this key does not support encoding.

  • Method Details

    • getU

      BigInteger getU()
      Get the u coordinate of the point.
      Returns:
      the u-coordinate, represented using a BigInteger which may hold any value

    • getParams

      default AlgorithmParameterSpec getParams()
      Returns the parameters associated with this key. The parameters are optional and may be either explicitly specified or implicitly created during key pair generation.
      Specified by:
      getParams in interface AsymmetricKey
      Specified by:
      getParams in interface XECKey
      Implementation Requirements:
      The default implementation returns null.
      Returns:
      the associated parameters, may be null