244 lines
8.5 KiB
Java
244 lines
8.5 KiB
Java
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package org.bouncycastle.math.ec.custom.sec;
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import io.flutter.embedding.android.KeyboardMap;
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import java.math.BigInteger;
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import org.bouncycastle.math.raw.Interleave;
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import org.bouncycastle.math.raw.Nat256;
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/* loaded from: classes6.dex */
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public class SecT193Field {
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private static final long M01 = 1;
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private static final long M49 = 562949953421311L;
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public static int trace(long[] jArr) {
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return ((int) jArr[0]) & 1;
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}
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public static void squareN(long[] jArr, int i, long[] jArr2) {
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long[] createExt64 = Nat256.createExt64();
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implSquare(jArr, createExt64);
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while (true) {
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reduce(createExt64, jArr2);
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i--;
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if (i <= 0) {
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return;
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} else {
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implSquare(jArr2, createExt64);
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}
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}
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}
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public static void squareAddToExt(long[] jArr, long[] jArr2) {
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long[] createExt64 = Nat256.createExt64();
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implSquare(jArr, createExt64);
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addExt(jArr2, createExt64, jArr2);
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}
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public static void square(long[] jArr, long[] jArr2) {
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long[] createExt64 = Nat256.createExt64();
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implSquare(jArr, createExt64);
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reduce(createExt64, jArr2);
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}
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public static void sqrt(long[] jArr, long[] jArr2) {
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long unshuffle = Interleave.unshuffle(jArr[0]);
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long unshuffle2 = Interleave.unshuffle(jArr[1]);
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long j = (unshuffle >>> 32) | ((-4294967296L) & unshuffle2);
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long unshuffle3 = Interleave.unshuffle(jArr[2]);
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long j2 = jArr[3];
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long j3 = unshuffle3 >>> 32;
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jArr2[0] = ((unshuffle & KeyboardMap.kValueMask) | (unshuffle2 << 32)) ^ (j << 8);
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jArr2[1] = ((((unshuffle3 & KeyboardMap.kValueMask) ^ (j2 << 32)) ^ (j3 << 8)) ^ (j >>> 56)) ^ (j << 33);
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jArr2[2] = (j >>> 31) ^ ((unshuffle3 >>> 88) ^ (j3 << 33));
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jArr2[3] = unshuffle3 >>> 63;
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}
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public static void reduce63(long[] jArr, int i) {
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int i2 = i + 3;
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long j = jArr[i2];
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long j2 = j >>> M01;
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jArr[i] = (j2 ^ (j2 << 15)) ^ jArr[i];
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int i3 = i + 1;
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jArr[i3] = jArr[i3] ^ (j >>> 50);
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jArr[i2] = j & M01;
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}
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public static void reduce(long[] jArr, long[] jArr2) {
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long j = jArr[0];
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long j2 = jArr[1];
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long j3 = jArr[2];
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long j4 = jArr[3];
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long j5 = jArr[4];
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long j6 = jArr[5];
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long j7 = jArr[6];
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long j8 = j5 ^ (j7 >>> 50);
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long j9 = (j4 ^ ((j7 >>> M01) ^ (j7 << 14))) ^ (j6 >>> 50);
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long j10 = j9 >>> M01;
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jArr2[0] = ((j ^ (j8 << 63)) ^ j10) ^ (j10 << 15);
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jArr2[1] = (j9 >>> 50) ^ ((j2 ^ (j6 << 63)) ^ ((j8 >>> M01) ^ (j8 << 14)));
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jArr2[2] = (((j7 << 63) ^ j3) ^ ((j6 >>> M01) ^ (j6 << 14))) ^ (j8 >>> 50);
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jArr2[3] = M01 & j9;
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}
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public static void multiplyAddToExt(long[] jArr, long[] jArr2, long[] jArr3) {
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long[] createExt64 = Nat256.createExt64();
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implMultiply(jArr, jArr2, createExt64);
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addExt(jArr3, createExt64, jArr3);
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}
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public static void multiply(long[] jArr, long[] jArr2, long[] jArr3) {
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long[] createExt64 = Nat256.createExt64();
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implMultiply(jArr, jArr2, createExt64);
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reduce(createExt64, jArr3);
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}
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public static void invert(long[] jArr, long[] jArr2) {
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if (Nat256.isZero64(jArr)) {
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throw new IllegalStateException();
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}
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long[] create64 = Nat256.create64();
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long[] create642 = Nat256.create64();
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square(jArr, create64);
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squareN(create64, 1, create642);
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multiply(create64, create642, create64);
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squareN(create642, 1, create642);
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multiply(create64, create642, create64);
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squareN(create64, 3, create642);
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multiply(create64, create642, create64);
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squareN(create64, 6, create642);
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multiply(create64, create642, create64);
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squareN(create64, 12, create642);
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multiply(create64, create642, create64);
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squareN(create64, 24, create642);
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multiply(create64, create642, create64);
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squareN(create64, 48, create642);
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multiply(create64, create642, create64);
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squareN(create64, 96, create642);
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multiply(create64, create642, jArr2);
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}
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protected static void implSquare(long[] jArr, long[] jArr2) {
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Interleave.expand64To128(jArr[0], jArr2, 0);
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Interleave.expand64To128(jArr[1], jArr2, 2);
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Interleave.expand64To128(jArr[2], jArr2, 4);
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jArr2[6] = jArr[3] & M01;
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}
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protected static void implMulwAcc(long j, long j2, long[] jArr, int i) {
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long j3 = j2 << M01;
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long j4 = j3 ^ j2;
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long j5 = j2 << 2;
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long j6 = j4 << M01;
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long[] jArr2 = {0, j2, j3, j4, j5, j5 ^ j2, j6, j6 ^ j2};
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int i2 = (int) j;
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long j7 = (jArr2[(i2 >>> 3) & 7] << 3) ^ jArr2[i2 & 7];
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long j8 = 0;
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int i3 = 36;
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do {
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int i4 = (int) (j >>> i3);
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long j9 = (((jArr2[i4 & 7] ^ (jArr2[(i4 >>> 3) & 7] << 3)) ^ (jArr2[(i4 >>> 6) & 7] << 6)) ^ (jArr2[(i4 >>> 9) & 7] << 9)) ^ (jArr2[(i4 >>> 12) & 7] << 12);
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j7 ^= j9 << i3;
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j8 ^= j9 >>> (-i3);
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i3 -= 15;
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} while (i3 > 0);
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jArr[i] = jArr[i] ^ (M49 & j7);
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int i5 = i + 1;
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jArr[i5] = jArr[i5] ^ ((j7 >>> 49) ^ (j8 << 15));
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}
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protected static void implMultiply(long[] jArr, long[] jArr2, long[] jArr3) {
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long[] jArr4 = new long[4];
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long[] jArr5 = new long[4];
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implExpand(jArr, jArr4);
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implExpand(jArr2, jArr5);
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implMulwAcc(jArr4[0], jArr5[0], jArr3, 0);
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implMulwAcc(jArr4[1], jArr5[1], jArr3, 1);
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implMulwAcc(jArr4[2], jArr5[2], jArr3, 2);
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implMulwAcc(jArr4[3], jArr5[3], jArr3, 3);
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for (int i = 5; i > 0; i--) {
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jArr3[i] = jArr3[i] ^ jArr3[i - 1];
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}
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implMulwAcc(jArr4[0] ^ jArr4[1], jArr5[0] ^ jArr5[1], jArr3, 1);
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implMulwAcc(jArr4[2] ^ jArr4[3], jArr5[2] ^ jArr5[3], jArr3, 3);
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for (int i2 = 7; i2 > 1; i2--) {
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jArr3[i2] = jArr3[i2] ^ jArr3[i2 - 2];
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}
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long j = jArr4[0] ^ jArr4[2];
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long j2 = jArr4[1] ^ jArr4[3];
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long j3 = jArr5[0] ^ jArr5[2];
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long j4 = jArr5[1] ^ jArr5[3];
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implMulwAcc(j ^ j2, j3 ^ j4, jArr3, 3);
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long[] jArr6 = new long[3];
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implMulwAcc(j, j3, jArr6, 0);
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implMulwAcc(j2, j4, jArr6, 1);
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long j5 = jArr6[0];
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long j6 = jArr6[1];
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long j7 = jArr6[2];
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jArr3[2] = jArr3[2] ^ j5;
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jArr3[3] = (j5 ^ j6) ^ jArr3[3];
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jArr3[4] = jArr3[4] ^ (j7 ^ j6);
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jArr3[5] = jArr3[5] ^ j7;
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implCompactExt(jArr3);
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}
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protected static void implExpand(long[] jArr, long[] jArr2) {
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long j = jArr[0];
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long j2 = jArr[1];
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long j3 = jArr[2];
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long j4 = jArr[3];
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jArr2[0] = j & M49;
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jArr2[1] = ((j >>> 49) ^ (j2 << 15)) & M49;
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jArr2[2] = ((j2 >>> 34) ^ (j3 << 30)) & M49;
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jArr2[3] = (j3 >>> 19) ^ (j4 << 45);
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}
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protected static void implCompactExt(long[] jArr) {
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long j = jArr[0];
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long j2 = jArr[1];
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long j3 = jArr[2];
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long j4 = jArr[3];
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long j5 = jArr[4];
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long j6 = jArr[5];
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long j7 = jArr[6];
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long j8 = jArr[7];
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jArr[0] = j ^ (j2 << 49);
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jArr[1] = (j2 >>> 15) ^ (j3 << 34);
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jArr[2] = (j3 >>> 30) ^ (j4 << 19);
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jArr[3] = ((j4 >>> 45) ^ (j5 << 4)) ^ (j6 << 53);
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jArr[4] = ((j5 >>> 60) ^ (j7 << 38)) ^ (j6 >>> 11);
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jArr[5] = (j7 >>> 26) ^ (j8 << 23);
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jArr[6] = j8 >>> 41;
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jArr[7] = 0;
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}
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public static long[] fromBigInteger(BigInteger bigInteger) {
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long[] fromBigInteger64 = Nat256.fromBigInteger64(bigInteger);
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reduce63(fromBigInteger64, 0);
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return fromBigInteger64;
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}
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public static void addOne(long[] jArr, long[] jArr2) {
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jArr2[0] = jArr[0] ^ M01;
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jArr2[1] = jArr[1];
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jArr2[2] = jArr[2];
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jArr2[3] = jArr[3];
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}
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public static void addExt(long[] jArr, long[] jArr2, long[] jArr3) {
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jArr3[0] = jArr[0] ^ jArr2[0];
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jArr3[1] = jArr[1] ^ jArr2[1];
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jArr3[2] = jArr[2] ^ jArr2[2];
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jArr3[3] = jArr[3] ^ jArr2[3];
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jArr3[4] = jArr[4] ^ jArr2[4];
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jArr3[5] = jArr[5] ^ jArr2[5];
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jArr3[6] = jArr2[6] ^ jArr[6];
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}
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public static void add(long[] jArr, long[] jArr2, long[] jArr3) {
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jArr3[0] = jArr[0] ^ jArr2[0];
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jArr3[1] = jArr[1] ^ jArr2[1];
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jArr3[2] = jArr[2] ^ jArr2[2];
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jArr3[3] = jArr2[3] ^ jArr[3];
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}
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}
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