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