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25 package java.security.spec;
26 
27 import java.util.Objects;
28 
29 /**
30  * A class representing elliptic curve public keys as defined in
31  * <a href="https://tools.ietf.org/html/rfc8032">RFC 8032: Edwards-Curve
32  * Digital Signature Algorithm (EdDSA)</a>, including the curve and other
33  * algorithm parameters. The public key is a point on the curve, which is
34  * represented using an {@code EdECPoint}.
35  *
36  * @since 15
37  */
38 public final class EdECPublicKeySpec implements KeySpec {
39 
40     private final NamedParameterSpec params;
41     private final EdECPoint point;
42 
43     /**
44      * Construct a public key spec using the supplied parameters and
45      * point.
46      *
47      * @param params the algorithm parameters.
48      * @param point the point representing the public key.
49      *
50      * @throws NullPointerException if {@code params} or {@code point}
51      *                              is null.
52      */
EdECPublicKeySpec(NamedParameterSpec params, EdECPoint point)53     public EdECPublicKeySpec(NamedParameterSpec params, EdECPoint point) {
54         Objects.requireNonNull(params, "params must not be null");
55         Objects.requireNonNull(point, "point must not be null");
56 
57         this.params = params;
58         this.point = point;
59     }
60 
61     /**
62      * Get the algorithm parameters that define the curve and other settings.
63      *
64      * @return the parameters.
65      */
getParams()66     public NamedParameterSpec getParams() {
67         return params;
68     }
69 
70     /**
71      * Get the point representing the public key.
72      *
73      * @return the {@code EdECPoint} representing the public key.
74      */
getPoint()75     public EdECPoint getPoint() {
76         return point;
77     }
78 }
79