what-the-bank/sources/org/bouncycastle/math/ec/custom/sec/SecP224K1FieldElement.java

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2024-07-27 18:17:47 +07:00
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.Nat224;
import org.bouncycastle.util.Arrays;
/* loaded from: classes6.dex */
public class SecP224K1FieldElement extends ECFieldElement {
protected int[] x;
public static final BigInteger Q = SecP224K1Curve.q;
private static final int[] PRECOMP_POW2 = {868209154, -587542221, 579297866, -1014948952, -1470801668, 514782679, -1897982644};
@Override // org.bouncycastle.math.ec.ECFieldElement
public BigInteger toBigInteger() {
return Nat224.toBigInteger(this.x);
}
@Override // org.bouncycastle.math.ec.ECFieldElement
public boolean testBitZero() {
return Nat224.getBit(this.x, 0) == 1;
}
@Override // org.bouncycastle.math.ec.ECFieldElement
public ECFieldElement subtract(ECFieldElement eCFieldElement) {
int[] create = Nat224.create();
SecP224K1Field.subtract(this.x, ((SecP224K1FieldElement) eCFieldElement).x, create);
return new SecP224K1FieldElement(create);
}
@Override // org.bouncycastle.math.ec.ECFieldElement
public ECFieldElement square() {
int[] create = Nat224.create();
SecP224K1Field.square(this.x, create);
return new SecP224K1FieldElement(create);
}
@Override // org.bouncycastle.math.ec.ECFieldElement
public ECFieldElement sqrt() {
int[] iArr = this.x;
if (Nat224.isZero(iArr) || Nat224.isOne(iArr)) {
return this;
}
int[] create = Nat224.create();
SecP224K1Field.square(iArr, create);
SecP224K1Field.multiply(create, iArr, create);
SecP224K1Field.square(create, create);
SecP224K1Field.multiply(create, iArr, create);
int[] create2 = Nat224.create();
SecP224K1Field.square(create, create2);
SecP224K1Field.multiply(create2, iArr, create2);
int[] create3 = Nat224.create();
SecP224K1Field.squareN(create2, 4, create3);
SecP224K1Field.multiply(create3, create2, create3);
int[] create4 = Nat224.create();
SecP224K1Field.squareN(create3, 3, create4);
SecP224K1Field.multiply(create4, create, create4);
SecP224K1Field.squareN(create4, 8, create4);
SecP224K1Field.multiply(create4, create3, create4);
SecP224K1Field.squareN(create4, 4, create3);
SecP224K1Field.multiply(create3, create2, create3);
SecP224K1Field.squareN(create3, 19, create2);
SecP224K1Field.multiply(create2, create4, create2);
int[] create5 = Nat224.create();
SecP224K1Field.squareN(create2, 42, create5);
SecP224K1Field.multiply(create5, create2, create5);
SecP224K1Field.squareN(create5, 23, create2);
SecP224K1Field.multiply(create2, create3, create2);
SecP224K1Field.squareN(create2, 84, create3);
SecP224K1Field.multiply(create3, create5, create3);
SecP224K1Field.squareN(create3, 20, create3);
SecP224K1Field.multiply(create3, create4, create3);
SecP224K1Field.squareN(create3, 3, create3);
SecP224K1Field.multiply(create3, iArr, create3);
SecP224K1Field.squareN(create3, 2, create3);
SecP224K1Field.multiply(create3, iArr, create3);
SecP224K1Field.squareN(create3, 4, create3);
SecP224K1Field.multiply(create3, create, create3);
SecP224K1Field.square(create3, create3);
SecP224K1Field.square(create3, create5);
if (Nat224.eq(iArr, create5)) {
return new SecP224K1FieldElement(create3);
}
SecP224K1Field.multiply(create3, PRECOMP_POW2, create3);
SecP224K1Field.square(create3, create5);
if (Nat224.eq(iArr, create5)) {
return new SecP224K1FieldElement(create3);
}
return null;
}
@Override // org.bouncycastle.math.ec.ECFieldElement
public ECFieldElement negate() {
int[] create = Nat224.create();
SecP224K1Field.negate(this.x, create);
return new SecP224K1FieldElement(create);
}
@Override // org.bouncycastle.math.ec.ECFieldElement
public ECFieldElement multiply(ECFieldElement eCFieldElement) {
int[] create = Nat224.create();
SecP224K1Field.multiply(this.x, ((SecP224K1FieldElement) eCFieldElement).x, create);
return new SecP224K1FieldElement(create);
}
@Override // org.bouncycastle.math.ec.ECFieldElement
public boolean isZero() {
return Nat224.isZero(this.x);
}
@Override // org.bouncycastle.math.ec.ECFieldElement
public boolean isOne() {
return Nat224.isOne(this.x);
}
@Override // org.bouncycastle.math.ec.ECFieldElement
public ECFieldElement invert() {
int[] create = Nat224.create();
Mod.invert(SecP224K1Field.P, this.x, create);
return new SecP224K1FieldElement(create);
}
public int hashCode() {
return Q.hashCode() ^ Arrays.hashCode(this.x, 0, 7);
}
@Override // org.bouncycastle.math.ec.ECFieldElement
public int getFieldSize() {
return Q.bitLength();
}
@Override // org.bouncycastle.math.ec.ECFieldElement
public String getFieldName() {
return "SecP224K1Field";
}
public boolean equals(Object obj) {
if (obj == this) {
return true;
}
if (obj instanceof SecP224K1FieldElement) {
return Nat224.eq(this.x, ((SecP224K1FieldElement) obj).x);
}
return false;
}
@Override // org.bouncycastle.math.ec.ECFieldElement
public ECFieldElement divide(ECFieldElement eCFieldElement) {
int[] create = Nat224.create();
Mod.invert(SecP224K1Field.P, ((SecP224K1FieldElement) eCFieldElement).x, create);
SecP224K1Field.multiply(create, this.x, create);
return new SecP224K1FieldElement(create);
}
@Override // org.bouncycastle.math.ec.ECFieldElement
public ECFieldElement addOne() {
int[] create = Nat224.create();
SecP224K1Field.addOne(this.x, create);
return new SecP224K1FieldElement(create);
}
@Override // org.bouncycastle.math.ec.ECFieldElement
public ECFieldElement add(ECFieldElement eCFieldElement) {
int[] create = Nat224.create();
SecP224K1Field.add(this.x, ((SecP224K1FieldElement) eCFieldElement).x, create);
return new SecP224K1FieldElement(create);
}
/* JADX INFO: Access modifiers changed from: protected */
public SecP224K1FieldElement(int[] iArr) {
this.x = iArr;
}
public SecP224K1FieldElement(BigInteger bigInteger) {
if (bigInteger == null || bigInteger.signum() < 0 || bigInteger.compareTo(Q) >= 0) {
throw new IllegalArgumentException("x value invalid for SecP224K1FieldElement");
}
this.x = SecP224K1Field.fromBigInteger(bigInteger);
}
public SecP224K1FieldElement() {
this.x = Nat224.create();
}
}