what-the-bank/sources/org/bouncycastle/math/ec/custom/sec/SecP160R2FieldElement.java

179 lines
6.5 KiB
Java

package org.bouncycastle.math.ec.custom.sec;
import java.math.BigInteger;
import org.bouncycastle.math.ec.ECFieldElement;
import org.bouncycastle.math.raw.Mod;
import org.bouncycastle.math.raw.Nat160;
import org.bouncycastle.util.Arrays;
/* loaded from: classes6.dex */
public class SecP160R2FieldElement extends ECFieldElement {
public static final BigInteger Q = SecP160R2Curve.q;
protected int[] x;
@Override // org.bouncycastle.math.ec.ECFieldElement
public BigInteger toBigInteger() {
return Nat160.toBigInteger(this.x);
}
@Override // org.bouncycastle.math.ec.ECFieldElement
public boolean testBitZero() {
return Nat160.getBit(this.x, 0) == 1;
}
@Override // org.bouncycastle.math.ec.ECFieldElement
public ECFieldElement subtract(ECFieldElement eCFieldElement) {
int[] create = Nat160.create();
SecP160R2Field.subtract(this.x, ((SecP160R2FieldElement) eCFieldElement).x, create);
return new SecP160R2FieldElement(create);
}
@Override // org.bouncycastle.math.ec.ECFieldElement
public ECFieldElement square() {
int[] create = Nat160.create();
SecP160R2Field.square(this.x, create);
return new SecP160R2FieldElement(create);
}
@Override // org.bouncycastle.math.ec.ECFieldElement
public ECFieldElement sqrt() {
int[] iArr = this.x;
if (Nat160.isZero(iArr) || Nat160.isOne(iArr)) {
return this;
}
int[] create = Nat160.create();
SecP160R2Field.square(iArr, create);
SecP160R2Field.multiply(create, iArr, create);
int[] create2 = Nat160.create();
SecP160R2Field.square(create, create2);
SecP160R2Field.multiply(create2, iArr, create2);
int[] create3 = Nat160.create();
SecP160R2Field.square(create2, create3);
SecP160R2Field.multiply(create3, iArr, create3);
int[] create4 = Nat160.create();
SecP160R2Field.squareN(create3, 3, create4);
SecP160R2Field.multiply(create4, create2, create4);
SecP160R2Field.squareN(create4, 7, create3);
SecP160R2Field.multiply(create3, create4, create3);
SecP160R2Field.squareN(create3, 3, create4);
SecP160R2Field.multiply(create4, create2, create4);
int[] create5 = Nat160.create();
SecP160R2Field.squareN(create4, 14, create5);
SecP160R2Field.multiply(create5, create3, create5);
SecP160R2Field.squareN(create5, 31, create3);
SecP160R2Field.multiply(create3, create5, create3);
SecP160R2Field.squareN(create3, 62, create5);
SecP160R2Field.multiply(create5, create3, create5);
SecP160R2Field.squareN(create5, 3, create3);
SecP160R2Field.multiply(create3, create2, create3);
SecP160R2Field.squareN(create3, 18, create3);
SecP160R2Field.multiply(create3, create4, create3);
SecP160R2Field.squareN(create3, 2, create3);
SecP160R2Field.multiply(create3, iArr, create3);
SecP160R2Field.squareN(create3, 3, create3);
SecP160R2Field.multiply(create3, create, create3);
SecP160R2Field.squareN(create3, 6, create3);
SecP160R2Field.multiply(create3, create2, create3);
SecP160R2Field.squareN(create3, 2, create3);
SecP160R2Field.multiply(create3, iArr, create3);
SecP160R2Field.square(create3, create);
if (Nat160.eq(iArr, create)) {
return new SecP160R2FieldElement(create3);
}
return null;
}
@Override // org.bouncycastle.math.ec.ECFieldElement
public ECFieldElement negate() {
int[] create = Nat160.create();
SecP160R2Field.negate(this.x, create);
return new SecP160R2FieldElement(create);
}
@Override // org.bouncycastle.math.ec.ECFieldElement
public ECFieldElement multiply(ECFieldElement eCFieldElement) {
int[] create = Nat160.create();
SecP160R2Field.multiply(this.x, ((SecP160R2FieldElement) eCFieldElement).x, create);
return new SecP160R2FieldElement(create);
}
@Override // org.bouncycastle.math.ec.ECFieldElement
public boolean isZero() {
return Nat160.isZero(this.x);
}
@Override // org.bouncycastle.math.ec.ECFieldElement
public boolean isOne() {
return Nat160.isOne(this.x);
}
@Override // org.bouncycastle.math.ec.ECFieldElement
public ECFieldElement invert() {
int[] create = Nat160.create();
Mod.invert(SecP160R2Field.P, this.x, create);
return new SecP160R2FieldElement(create);
}
public int hashCode() {
return Q.hashCode() ^ Arrays.hashCode(this.x, 0, 5);
}
@Override // org.bouncycastle.math.ec.ECFieldElement
public int getFieldSize() {
return Q.bitLength();
}
@Override // org.bouncycastle.math.ec.ECFieldElement
public String getFieldName() {
return "SecP160R2Field";
}
public boolean equals(Object obj) {
if (obj == this) {
return true;
}
if (obj instanceof SecP160R2FieldElement) {
return Nat160.eq(this.x, ((SecP160R2FieldElement) obj).x);
}
return false;
}
@Override // org.bouncycastle.math.ec.ECFieldElement
public ECFieldElement divide(ECFieldElement eCFieldElement) {
int[] create = Nat160.create();
Mod.invert(SecP160R2Field.P, ((SecP160R2FieldElement) eCFieldElement).x, create);
SecP160R2Field.multiply(create, this.x, create);
return new SecP160R2FieldElement(create);
}
@Override // org.bouncycastle.math.ec.ECFieldElement
public ECFieldElement addOne() {
int[] create = Nat160.create();
SecP160R2Field.addOne(this.x, create);
return new SecP160R2FieldElement(create);
}
@Override // org.bouncycastle.math.ec.ECFieldElement
public ECFieldElement add(ECFieldElement eCFieldElement) {
int[] create = Nat160.create();
SecP160R2Field.add(this.x, ((SecP160R2FieldElement) eCFieldElement).x, create);
return new SecP160R2FieldElement(create);
}
/* JADX INFO: Access modifiers changed from: protected */
public SecP160R2FieldElement(int[] iArr) {
this.x = iArr;
}
public SecP160R2FieldElement(BigInteger bigInteger) {
if (bigInteger == null || bigInteger.signum() < 0 || bigInteger.compareTo(Q) >= 0) {
throw new IllegalArgumentException("x value invalid for SecP160R2FieldElement");
}
this.x = SecP160R2Field.fromBigInteger(bigInteger);
}
public SecP160R2FieldElement() {
this.x = Nat160.create();
}
}