157 lines
4.8 KiB
Java
157 lines
4.8 KiB
Java
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package org.bouncycastle.pqc.crypto.sphincs;
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import org.bouncycastle.util.Pack;
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/* loaded from: classes6.dex */
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class Permute {
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private static final int CHACHA_ROUNDS = 12;
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protected static int rotl(int i, int i2) {
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return (i << i2) | (i >>> (-i2));
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}
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/* JADX INFO: Access modifiers changed from: package-private */
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public void chacha_permute(byte[] bArr, byte[] bArr2) {
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int[] iArr = new int[16];
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for (int i = 0; i < 16; i++) {
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iArr[i] = Pack.littleEndianToInt(bArr2, i << 2);
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}
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permute(12, iArr);
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for (int i2 = 0; i2 < 16; i2++) {
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Pack.intToLittleEndian(iArr[i2], bArr, i2 << 2);
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}
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}
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public static void permute(int i, int[] iArr) {
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int i2 = 16;
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if (iArr.length != 16) {
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throw new IllegalArgumentException();
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}
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if (i % 2 != 0) {
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throw new IllegalArgumentException("Number of rounds must be even");
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}
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char c = 0;
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int i3 = iArr[0];
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int i4 = iArr[1];
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int i5 = iArr[2];
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int i6 = iArr[3];
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int i7 = iArr[4];
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int i8 = iArr[5];
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int i9 = iArr[6];
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int i10 = 7;
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int i11 = iArr[7];
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int i12 = 8;
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int i13 = iArr[8];
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int i14 = iArr[9];
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int i15 = iArr[10];
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int i16 = iArr[11];
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int i17 = iArr[12];
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int i18 = iArr[13];
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int i19 = iArr[14];
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int i20 = iArr[15];
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int i21 = i19;
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int i22 = i18;
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int i23 = i17;
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int i24 = i16;
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int i25 = i15;
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int i26 = i14;
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int i27 = i13;
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int i28 = i11;
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int i29 = i9;
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int i30 = i8;
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int i31 = i7;
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int i32 = i6;
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int i33 = i5;
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int i34 = i4;
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int i35 = i3;
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int i36 = i;
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while (i36 > 0) {
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int i37 = i35 + i31;
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int rotl = rotl(i23 ^ i37, i2);
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int i38 = i27 + rotl;
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int rotl2 = rotl(i31 ^ i38, 12);
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int i39 = i37 + rotl2;
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int rotl3 = rotl(rotl ^ i39, i12);
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int i40 = i38 + rotl3;
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int rotl4 = rotl(rotl2 ^ i40, i10);
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int i41 = i34 + i30;
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int rotl5 = rotl(i22 ^ i41, i2);
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int i42 = i26 + rotl5;
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int rotl6 = rotl(i30 ^ i42, 12);
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int i43 = i41 + rotl6;
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int rotl7 = rotl(rotl5 ^ i43, i12);
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int i44 = i42 + rotl7;
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int rotl8 = rotl(rotl6 ^ i44, i10);
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int i45 = i33 + i29;
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int rotl9 = rotl(i21 ^ i45, i2);
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int i46 = i25 + rotl9;
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int rotl10 = rotl(i29 ^ i46, 12);
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int i47 = i45 + rotl10;
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int rotl11 = rotl(rotl9 ^ i47, i12);
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int i48 = i46 + rotl11;
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int rotl12 = rotl(rotl10 ^ i48, i10);
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int i49 = i32 + i28;
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int rotl13 = rotl(i20 ^ i49, i2);
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int i50 = i24 + rotl13;
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int rotl14 = rotl(i28 ^ i50, 12);
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int i51 = i49 + rotl14;
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int rotl15 = rotl(rotl13 ^ i51, i12);
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int i52 = i50 + rotl15;
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int rotl16 = rotl(rotl14 ^ i52, 7);
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int i53 = i39 + rotl8;
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int rotl17 = rotl(rotl15 ^ i53, 16);
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int i54 = i48 + rotl17;
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int rotl18 = rotl(rotl8 ^ i54, 12);
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i35 = i53 + rotl18;
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i20 = rotl(rotl17 ^ i35, 8);
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i25 = i54 + i20;
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i30 = rotl(rotl18 ^ i25, 7);
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int i55 = i43 + rotl12;
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int rotl19 = rotl(rotl3 ^ i55, 16);
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int i56 = i52 + rotl19;
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int rotl20 = rotl(rotl12 ^ i56, 12);
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i34 = i55 + rotl20;
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i23 = rotl(rotl19 ^ i34, 8);
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i24 = i56 + i23;
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i29 = rotl(rotl20 ^ i24, 7);
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int i57 = i47 + rotl16;
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int rotl21 = rotl(rotl7 ^ i57, 16);
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int i58 = i40 + rotl21;
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int rotl22 = rotl(rotl16 ^ i58, 12);
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i33 = i57 + rotl22;
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i22 = rotl(rotl21 ^ i33, 8);
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i27 = i58 + i22;
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i28 = rotl(rotl22 ^ i27, 7);
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int i59 = i51 + rotl4;
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i2 = 16;
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int rotl23 = rotl(rotl11 ^ i59, 16);
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int i60 = i44 + rotl23;
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int rotl24 = rotl(rotl4 ^ i60, 12);
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i32 = i59 + rotl24;
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i21 = rotl(rotl23 ^ i32, 8);
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i26 = i60 + i21;
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i31 = rotl(rotl24 ^ i26, 7);
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i36 -= 2;
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i10 = 7;
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c = 0;
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i12 = 8;
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}
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iArr[c] = i35;
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iArr[1] = i34;
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iArr[2] = i33;
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iArr[3] = i32;
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iArr[4] = i31;
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iArr[5] = i30;
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iArr[6] = i29;
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iArr[i10] = i28;
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iArr[8] = i27;
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iArr[9] = i26;
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iArr[10] = i25;
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iArr[11] = i24;
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iArr[12] = i23;
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iArr[13] = i22;
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iArr[14] = i21;
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iArr[15] = i20;
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}
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}
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