package org.bouncycastle.math.ec.custom.sec; import java.math.BigInteger; import org.bouncycastle.math.raw.Nat; import org.bouncycastle.math.raw.Nat192; /* loaded from: classes6.dex */ public class SecP192R1Field { private static final long M = 4294967295L; private static final int P5 = -1; private static final int PExt11 = -1; static final int[] P = {-1, -1, -2, -1, -1, -1}; static final int[] PExt = {1, 0, 2, 0, 1, 0, -2, -1, -3, -1, -1, -1}; private static final int[] PExtInv = {-1, -1, -3, -1, -2, -1, 1, 0, 2}; public static void twice(int[] iArr, int[] iArr2) { if (Nat.shiftUpBit(6, iArr, 0, iArr2) != 0 || (iArr2[5] == -1 && Nat192.gte(iArr2, P))) { addPInvTo(iArr2); } } public static void subtractExt(int[] iArr, int[] iArr2, int[] iArr3) { if (Nat.sub(12, iArr, iArr2, iArr3) != 0) { int[] iArr4 = PExtInv; if (Nat.subFrom(iArr4.length, iArr4, iArr3) != 0) { Nat.decAt(12, iArr3, iArr4.length); } } } public static void subtract(int[] iArr, int[] iArr2, int[] iArr3) { if (Nat192.sub(iArr, iArr2, iArr3) != 0) { subPInvFrom(iArr3); } } private static void subPInvFrom(int[] iArr) { long j = (iArr[0] & 4294967295L) - 1; iArr[0] = (int) j; long j2 = j >> 32; if (j2 != 0) { long j3 = j2 + (iArr[1] & 4294967295L); iArr[1] = (int) j3; j2 = j3 >> 32; } long j4 = j2 + ((4294967295L & iArr[2]) - 1); iArr[2] = (int) j4; if ((j4 >> 32) != 0) { Nat.decAt(6, iArr, 3); } } public static void squareN(int[] iArr, int i, int[] iArr2) { int[] createExt = Nat192.createExt(); Nat192.square(iArr, createExt); while (true) { reduce(createExt, iArr2); i--; if (i <= 0) { return; } else { Nat192.square(iArr2, createExt); } } } public static void square(int[] iArr, int[] iArr2) { int[] createExt = Nat192.createExt(); Nat192.square(iArr, createExt); reduce(createExt, iArr2); } public static void reduce32(int i, int[] iArr) { long j; if (i != 0) { long j2 = i & 4294967295L; long j3 = (iArr[0] & 4294967295L) + j2; iArr[0] = (int) j3; long j4 = j3 >> 32; if (j4 != 0) { long j5 = j4 + (iArr[1] & 4294967295L); iArr[1] = (int) j5; j4 = j5 >> 32; } long j6 = j4 + (4294967295L & iArr[2]) + j2; iArr[2] = (int) j6; j = j6 >> 32; } else { j = 0; } if ((j == 0 || Nat.incAt(6, iArr, 3) == 0) && !(iArr[5] == -1 && Nat192.gte(iArr, P))) { return; } addPInvTo(iArr); } public static void reduce(int[] iArr, int[] iArr2) { long j = iArr[6] & 4294967295L; long j2 = iArr[7] & 4294967295L; long j3 = iArr[8]; long j4 = iArr[9]; long j5 = (iArr[10] & 4294967295L) + j; long j6 = (iArr[11] & 4294967295L) + j2; long j7 = (iArr[0] & 4294967295L) + j5; int i = (int) j7; long j8 = (j7 >> 32) + (iArr[1] & 4294967295L) + j6; int i2 = (int) j8; iArr2[1] = i2; long j9 = j5 + (j3 & 4294967295L); long j10 = j6 + (j4 & 4294967295L); long j11 = (j8 >> 32) + (iArr[2] & 4294967295L) + j9; long j12 = (j11 >> 32) + (iArr[3] & 4294967295L) + j10; iArr2[3] = (int) j12; long j13 = (j12 >> 32) + (iArr[4] & 4294967295L) + (j9 - j); iArr2[4] = (int) j13; long j14 = (j13 >> 32) + (iArr[5] & 4294967295L) + (j10 - j2); iArr2[5] = (int) j14; long j15 = j14 >> 32; long j16 = (j11 & 4294967295L) + j15; long j17 = j15 + (i & 4294967295L); iArr2[0] = (int) j17; long j18 = j17 >> 32; if (j18 != 0) { long j19 = j18 + (4294967295L & i2); iArr2[1] = (int) j19; j16 += j19 >> 32; } iArr2[2] = (int) j16; if (((j16 >> 32) == 0 || Nat.incAt(6, iArr2, 3) == 0) && !(iArr2[5] == -1 && Nat192.gte(iArr2, P))) { return; } addPInvTo(iArr2); } public static void negate(int[] iArr, int[] iArr2) { if (Nat192.isZero(iArr)) { Nat192.zero(iArr2); } else { Nat192.sub(P, iArr, iArr2); } } public static void multiplyAddToExt(int[] iArr, int[] iArr2, int[] iArr3) { if (Nat192.mulAddTo(iArr, iArr2, iArr3) != 0 || (iArr3[11] == -1 && Nat.gte(12, iArr3, PExt))) { int[] iArr4 = PExtInv; if (Nat.addTo(iArr4.length, iArr4, iArr3) != 0) { Nat.incAt(12, iArr3, iArr4.length); } } } public static void multiply(int[] iArr, int[] iArr2, int[] iArr3) { int[] createExt = Nat192.createExt(); Nat192.mul(iArr, iArr2, createExt); reduce(createExt, iArr3); } public static void half(int[] iArr, int[] iArr2) { if ((iArr[0] & 1) == 0) { Nat.shiftDownBit(6, iArr, 0, iArr2); } else { Nat.shiftDownBit(6, iArr2, Nat192.add(iArr, P, iArr2)); } } public static int[] fromBigInteger(BigInteger bigInteger) { int[] fromBigInteger = Nat192.fromBigInteger(bigInteger); if (fromBigInteger[5] == -1) { int[] iArr = P; if (Nat192.gte(fromBigInteger, iArr)) { Nat192.subFrom(iArr, fromBigInteger); } } return fromBigInteger; } private static void addPInvTo(int[] iArr) { long j = (iArr[0] & 4294967295L) + 1; iArr[0] = (int) j; long j2 = j >> 32; if (j2 != 0) { long j3 = j2 + (iArr[1] & 4294967295L); iArr[1] = (int) j3; j2 = j3 >> 32; } long j4 = j2 + (4294967295L & iArr[2]) + 1; iArr[2] = (int) j4; if ((j4 >> 32) != 0) { Nat.incAt(6, iArr, 3); } } public static void addOne(int[] iArr, int[] iArr2) { if (Nat.inc(6, iArr, iArr2) != 0 || (iArr2[5] == -1 && Nat192.gte(iArr2, P))) { addPInvTo(iArr2); } } public static void addExt(int[] iArr, int[] iArr2, int[] iArr3) { if (Nat.add(12, iArr, iArr2, iArr3) != 0 || (iArr3[11] == -1 && Nat.gte(12, iArr3, PExt))) { int[] iArr4 = PExtInv; if (Nat.addTo(iArr4.length, iArr4, iArr3) != 0) { Nat.incAt(12, iArr3, iArr4.length); } } } public static void add(int[] iArr, int[] iArr2, int[] iArr3) { if (Nat192.add(iArr, iArr2, iArr3) != 0 || (iArr3[5] == -1 && Nat192.gte(iArr3, P))) { addPInvTo(iArr3); } } }