what-the-bank/sources/org/bouncycastle/math/ec/custom/sec/SecP160K1Point.java

171 lines
8.4 KiB
Java

package org.bouncycastle.math.ec.custom.sec;
import org.bouncycastle.math.ec.ECCurve;
import org.bouncycastle.math.ec.ECFieldElement;
import org.bouncycastle.math.ec.ECPoint;
import org.bouncycastle.math.raw.Nat;
import org.bouncycastle.math.raw.Nat160;
/* loaded from: classes6.dex */
public class SecP160K1Point extends ECPoint.AbstractFp {
@Override // org.bouncycastle.math.ec.ECPoint
public ECPoint twicePlus(ECPoint eCPoint) {
if (this == eCPoint) {
return threeTimes();
}
return isInfinity() ? eCPoint : eCPoint.isInfinity() ? twice() : this.y.isZero() ? eCPoint : twice().add(eCPoint);
}
@Override // org.bouncycastle.math.ec.ECPoint
public ECPoint twice() {
if (isInfinity()) {
return this;
}
ECCurve curve = getCurve();
SecP160R2FieldElement secP160R2FieldElement = (SecP160R2FieldElement) this.y;
if (secP160R2FieldElement.isZero()) {
return curve.getInfinity();
}
SecP160R2FieldElement secP160R2FieldElement2 = (SecP160R2FieldElement) this.x;
SecP160R2FieldElement secP160R2FieldElement3 = (SecP160R2FieldElement) this.zs[0];
int[] create = Nat160.create();
SecP160R2Field.square(secP160R2FieldElement.x, create);
int[] create2 = Nat160.create();
SecP160R2Field.square(create, create2);
int[] create3 = Nat160.create();
SecP160R2Field.square(secP160R2FieldElement2.x, create3);
SecP160R2Field.reduce32(Nat160.addBothTo(create3, create3, create3), create3);
SecP160R2Field.multiply(create, secP160R2FieldElement2.x, create);
SecP160R2Field.reduce32(Nat.shiftUpBits(5, create, 2, 0), create);
int[] create4 = Nat160.create();
SecP160R2Field.reduce32(Nat.shiftUpBits(5, create2, 3, 0, create4), create4);
SecP160R2FieldElement secP160R2FieldElement4 = new SecP160R2FieldElement(create2);
SecP160R2Field.square(create3, secP160R2FieldElement4.x);
SecP160R2Field.subtract(secP160R2FieldElement4.x, create, secP160R2FieldElement4.x);
SecP160R2Field.subtract(secP160R2FieldElement4.x, create, secP160R2FieldElement4.x);
SecP160R2FieldElement secP160R2FieldElement5 = new SecP160R2FieldElement(create);
SecP160R2Field.subtract(create, secP160R2FieldElement4.x, secP160R2FieldElement5.x);
SecP160R2Field.multiply(secP160R2FieldElement5.x, create3, secP160R2FieldElement5.x);
SecP160R2Field.subtract(secP160R2FieldElement5.x, create4, secP160R2FieldElement5.x);
SecP160R2FieldElement secP160R2FieldElement6 = new SecP160R2FieldElement(create3);
SecP160R2Field.twice(secP160R2FieldElement.x, secP160R2FieldElement6.x);
if (!secP160R2FieldElement3.isOne()) {
SecP160R2Field.multiply(secP160R2FieldElement6.x, secP160R2FieldElement3.x, secP160R2FieldElement6.x);
}
return new SecP160K1Point(curve, secP160R2FieldElement4, secP160R2FieldElement5, new ECFieldElement[]{secP160R2FieldElement6}, this.withCompression);
}
@Override // org.bouncycastle.math.ec.ECPoint
public ECPoint threeTimes() {
return (isInfinity() || this.y.isZero()) ? this : twice().add(this);
}
@Override // org.bouncycastle.math.ec.ECPoint
public ECPoint negate() {
return isInfinity() ? this : new SecP160K1Point(this.curve, this.x, this.y.negate(), this.zs, this.withCompression);
}
@Override // org.bouncycastle.math.ec.ECPoint
public ECPoint detach() {
return new SecP160K1Point(null, getAffineXCoord(), getAffineYCoord());
}
@Override // org.bouncycastle.math.ec.ECPoint
public ECPoint add(ECPoint eCPoint) {
int[] iArr;
int[] iArr2;
int[] iArr3;
int[] iArr4;
if (isInfinity()) {
return eCPoint;
}
if (eCPoint.isInfinity()) {
return this;
}
if (this == eCPoint) {
return twice();
}
ECCurve curve = getCurve();
SecP160R2FieldElement secP160R2FieldElement = (SecP160R2FieldElement) this.x;
SecP160R2FieldElement secP160R2FieldElement2 = (SecP160R2FieldElement) this.y;
SecP160R2FieldElement secP160R2FieldElement3 = (SecP160R2FieldElement) eCPoint.getXCoord();
SecP160R2FieldElement secP160R2FieldElement4 = (SecP160R2FieldElement) eCPoint.getYCoord();
SecP160R2FieldElement secP160R2FieldElement5 = (SecP160R2FieldElement) this.zs[0];
SecP160R2FieldElement secP160R2FieldElement6 = (SecP160R2FieldElement) eCPoint.getZCoord(0);
int[] createExt = Nat160.createExt();
int[] create = Nat160.create();
int[] create2 = Nat160.create();
int[] create3 = Nat160.create();
boolean isOne = secP160R2FieldElement5.isOne();
if (isOne) {
iArr = secP160R2FieldElement3.x;
iArr2 = secP160R2FieldElement4.x;
} else {
SecP160R2Field.square(secP160R2FieldElement5.x, create2);
SecP160R2Field.multiply(create2, secP160R2FieldElement3.x, create);
SecP160R2Field.multiply(create2, secP160R2FieldElement5.x, create2);
SecP160R2Field.multiply(create2, secP160R2FieldElement4.x, create2);
iArr = create;
iArr2 = create2;
}
boolean isOne2 = secP160R2FieldElement6.isOne();
if (isOne2) {
iArr3 = secP160R2FieldElement.x;
iArr4 = secP160R2FieldElement2.x;
} else {
SecP160R2Field.square(secP160R2FieldElement6.x, create3);
SecP160R2Field.multiply(create3, secP160R2FieldElement.x, createExt);
SecP160R2Field.multiply(create3, secP160R2FieldElement6.x, create3);
SecP160R2Field.multiply(create3, secP160R2FieldElement2.x, create3);
iArr3 = createExt;
iArr4 = create3;
}
int[] create4 = Nat160.create();
SecP160R2Field.subtract(iArr3, iArr, create4);
SecP160R2Field.subtract(iArr4, iArr2, create);
if (Nat160.isZero(create4)) {
return Nat160.isZero(create) ? twice() : curve.getInfinity();
}
SecP160R2Field.square(create4, create2);
int[] create5 = Nat160.create();
SecP160R2Field.multiply(create2, create4, create5);
SecP160R2Field.multiply(create2, iArr3, create2);
SecP160R2Field.negate(create5, create5);
Nat160.mul(iArr4, create5, createExt);
SecP160R2Field.reduce32(Nat160.addBothTo(create2, create2, create5), create5);
SecP160R2FieldElement secP160R2FieldElement7 = new SecP160R2FieldElement(create3);
SecP160R2Field.square(create, secP160R2FieldElement7.x);
SecP160R2Field.subtract(secP160R2FieldElement7.x, create5, secP160R2FieldElement7.x);
SecP160R2FieldElement secP160R2FieldElement8 = new SecP160R2FieldElement(create5);
SecP160R2Field.subtract(create2, secP160R2FieldElement7.x, secP160R2FieldElement8.x);
SecP160R2Field.multiplyAddToExt(secP160R2FieldElement8.x, create, createExt);
SecP160R2Field.reduce(createExt, secP160R2FieldElement8.x);
SecP160R2FieldElement secP160R2FieldElement9 = new SecP160R2FieldElement(create4);
if (!isOne) {
SecP160R2Field.multiply(secP160R2FieldElement9.x, secP160R2FieldElement5.x, secP160R2FieldElement9.x);
}
if (!isOne2) {
SecP160R2Field.multiply(secP160R2FieldElement9.x, secP160R2FieldElement6.x, secP160R2FieldElement9.x);
}
return new SecP160K1Point(curve, secP160R2FieldElement7, secP160R2FieldElement8, new ECFieldElement[]{secP160R2FieldElement9}, this.withCompression);
}
/* JADX INFO: Access modifiers changed from: package-private */
public SecP160K1Point(ECCurve eCCurve, ECFieldElement eCFieldElement, ECFieldElement eCFieldElement2, ECFieldElement[] eCFieldElementArr, boolean z) {
super(eCCurve, eCFieldElement, eCFieldElement2, eCFieldElementArr);
this.withCompression = z;
}
public SecP160K1Point(ECCurve eCCurve, ECFieldElement eCFieldElement, ECFieldElement eCFieldElement2, boolean z) {
super(eCCurve, eCFieldElement, eCFieldElement2);
if ((eCFieldElement == null) != (eCFieldElement2 == null)) {
throw new IllegalArgumentException("Exactly one of the field elements is null");
}
this.withCompression = z;
}
public SecP160K1Point(ECCurve eCCurve, ECFieldElement eCFieldElement, ECFieldElement eCFieldElement2) {
this(eCCurve, eCFieldElement, eCFieldElement2, false);
}
}