77 lines
2.5 KiB
Java
77 lines
2.5 KiB
Java
/*
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* Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package sun.security.ec.point;
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import sun.security.util.math.ImmutableIntegerModuloP;
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import java.util.Objects;
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/**
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* Elliptic curve point represented using affine coordinates (x, y). This class
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* is not part of the sun.security.ec.point.Point hierarchy because it is not
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* used to hold intermediate values during point arithmetic, and so it does not
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* have a mutable form.
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*/
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public class AffinePoint {
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private final ImmutableIntegerModuloP x;
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private final ImmutableIntegerModuloP y;
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public AffinePoint(ImmutableIntegerModuloP x, ImmutableIntegerModuloP y) {
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this.x = x;
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this.y = y;
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}
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public ImmutableIntegerModuloP getX() {
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return x;
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}
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public ImmutableIntegerModuloP getY() {
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return y;
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}
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@Override
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public boolean equals(Object obj) {
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if (!(obj instanceof AffinePoint)) {
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return false;
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}
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AffinePoint p = (AffinePoint) obj;
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boolean xEquals = x.asBigInteger().equals(p.x.asBigInteger());
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boolean yEquals = y.asBigInteger().equals(p.y.asBigInteger());
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return xEquals && yEquals;
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}
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@Override
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public int hashCode() {
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return Objects.hash(x, y);
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}
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@Override
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public String toString() {
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return "(" + x.asBigInteger().toString() + "," +
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y.asBigInteger().toString() + ")";
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}
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}
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