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25 package java.security.interfaces;
26 
27 import java.math.BigInteger;
28 import java.security.PrivateKey;
29 
30 /**
31  * The interface to an elliptic curve (EC) private key.
32  *
33  * @author Valerie Peng
34  *
35  *
36  * @see PrivateKey
37  * @see ECKey
38  *
39  * @since 1.5
40  */
41 public interface ECPrivateKey extends PrivateKey, ECKey {
42    /**
43     * The class fingerprint that is set to indicate
44     * serialization compatibility.
45     *
46     * @deprecated A {@code serialVersionUID} field in an interface is
47     * ineffectual. Do not use; no replacement.
48     */
49     @Deprecated
50     @SuppressWarnings("serial")
51     @java.io.Serial
52     static final long serialVersionUID = -7896394956925609184L;
53 
54     /**
55      * Returns the private value S.
56      * @return the private value S.
57      */
getS()58     BigInteger getS();
59 }
60