200 lines
7.6 KiB
Java
200 lines
7.6 KiB
Java
package org.bouncycastle.crypto.engines;
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/* loaded from: classes6.dex */
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public final class CAST6Engine extends CAST5Engine {
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protected static final int BLOCK_SIZE = 16;
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protected static final int ROUNDS = 12;
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protected int[] _Kr = new int[48];
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protected int[] _Km = new int[48];
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protected int[] _Tr = new int[192];
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protected int[] _Tm = new int[192];
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private int[] _workingKey = new int[8];
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@Override // org.bouncycastle.crypto.engines.CAST5Engine, org.bouncycastle.crypto.BlockCipher
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public final int getBlockSize() {
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return 16;
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}
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@Override // org.bouncycastle.crypto.engines.CAST5Engine, org.bouncycastle.crypto.BlockCipher
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public final void reset() {
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}
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@Override // org.bouncycastle.crypto.engines.CAST5Engine
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protected final void setKey(byte[] bArr) {
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int i = 1518500249;
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int i2 = 19;
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for (int i3 = 0; i3 < 24; i3++) {
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for (int i4 = 0; i4 < 8; i4++) {
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int i5 = (i3 << 3) + i4;
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this._Tm[i5] = i;
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i += 1859775393;
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this._Tr[i5] = i2;
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i2 = (i2 + 17) & 31;
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}
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}
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byte[] bArr2 = new byte[64];
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System.arraycopy(bArr, 0, bArr2, 0, bArr.length);
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for (int i6 = 0; i6 < 8; i6++) {
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this._workingKey[i6] = BytesTo32bits(bArr2, i6 << 2);
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}
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for (int i7 = 0; i7 < 12; i7++) {
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int i8 = i7 << 4;
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int[] iArr = this._workingKey;
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iArr[6] = iArr[6] ^ F1(iArr[7], this._Tm[i8], this._Tr[i8]);
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int[] iArr2 = this._workingKey;
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int i9 = i8 + 1;
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iArr2[5] = iArr2[5] ^ F2(iArr2[6], this._Tm[i9], this._Tr[i9]);
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int[] iArr3 = this._workingKey;
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int i10 = i8 + 2;
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iArr3[4] = iArr3[4] ^ F3(iArr3[5], this._Tm[i10], this._Tr[i10]);
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int[] iArr4 = this._workingKey;
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int i11 = i8 + 3;
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iArr4[3] = iArr4[3] ^ F1(iArr4[4], this._Tm[i11], this._Tr[i11]);
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int[] iArr5 = this._workingKey;
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int i12 = i8 + 4;
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iArr5[2] = iArr5[2] ^ F2(iArr5[3], this._Tm[i12], this._Tr[i12]);
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int[] iArr6 = this._workingKey;
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int i13 = i8 + 5;
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iArr6[1] = F3(iArr6[2], this._Tm[i13], this._Tr[i13]) ^ iArr6[1];
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int[] iArr7 = this._workingKey;
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int i14 = i8 + 6;
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iArr7[0] = iArr7[0] ^ F1(iArr7[1], this._Tm[i14], this._Tr[i14]);
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int[] iArr8 = this._workingKey;
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int i15 = i8 + 7;
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iArr8[7] = F2(iArr8[0], this._Tm[i15], this._Tr[i15]) ^ iArr8[7];
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int i16 = ((i7 << 1) + 1) << 3;
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int[] iArr9 = this._workingKey;
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iArr9[6] = iArr9[6] ^ F1(iArr9[7], this._Tm[i16], this._Tr[i16]);
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int[] iArr10 = this._workingKey;
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int i17 = i16 + 1;
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iArr10[5] = iArr10[5] ^ F2(iArr10[6], this._Tm[i17], this._Tr[i17]);
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int[] iArr11 = this._workingKey;
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int i18 = i16 + 2;
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iArr11[4] = iArr11[4] ^ F3(iArr11[5], this._Tm[i18], this._Tr[i18]);
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int[] iArr12 = this._workingKey;
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int i19 = i16 + 3;
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iArr12[3] = iArr12[3] ^ F1(iArr12[4], this._Tm[i19], this._Tr[i19]);
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int[] iArr13 = this._workingKey;
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int i20 = i16 + 4;
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iArr13[2] = F2(iArr13[3], this._Tm[i20], this._Tr[i20]) ^ iArr13[2];
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int[] iArr14 = this._workingKey;
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int i21 = i16 + 5;
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iArr14[1] = iArr14[1] ^ F3(iArr14[2], this._Tm[i21], this._Tr[i21]);
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int[] iArr15 = this._workingKey;
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int i22 = i16 + 6;
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iArr15[0] = iArr15[0] ^ F1(iArr15[1], this._Tm[i22], this._Tr[i22]);
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int[] iArr16 = this._workingKey;
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int i23 = i16 + 7;
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iArr16[7] = F2(iArr16[0], this._Tm[i23], this._Tr[i23]) ^ iArr16[7];
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int[] iArr17 = this._Kr;
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int i24 = i7 << 2;
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int[] iArr18 = this._workingKey;
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iArr17[i24] = iArr18[0] & 31;
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int i25 = i24 + 1;
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iArr17[i25] = iArr18[2] & 31;
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int i26 = i24 + 2;
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iArr17[i26] = iArr18[4] & 31;
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int i27 = i24 + 3;
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iArr17[i27] = iArr18[6] & 31;
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int[] iArr19 = this._Km;
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iArr19[i24] = iArr18[7];
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iArr19[i25] = iArr18[5];
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iArr19[i26] = iArr18[3];
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iArr19[i27] = iArr18[1];
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}
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}
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@Override // org.bouncycastle.crypto.engines.CAST5Engine, org.bouncycastle.crypto.BlockCipher
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public final String getAlgorithmName() {
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return "CAST6";
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}
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@Override // org.bouncycastle.crypto.engines.CAST5Engine
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protected final int encryptBlock(byte[] bArr, int i, byte[] bArr2, int i2) {
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int[] iArr = new int[4];
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CAST_Encipher(BytesTo32bits(bArr, i), BytesTo32bits(bArr, i + 4), BytesTo32bits(bArr, i + 8), BytesTo32bits(bArr, i + 12), iArr);
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Bits32ToBytes(iArr[0], bArr2, i2);
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Bits32ToBytes(iArr[1], bArr2, i2 + 4);
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Bits32ToBytes(iArr[2], bArr2, i2 + 8);
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Bits32ToBytes(iArr[3], bArr2, i2 + 12);
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return 16;
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}
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@Override // org.bouncycastle.crypto.engines.CAST5Engine
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protected final int decryptBlock(byte[] bArr, int i, byte[] bArr2, int i2) {
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int[] iArr = new int[4];
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CAST_Decipher(BytesTo32bits(bArr, i), BytesTo32bits(bArr, i + 4), BytesTo32bits(bArr, i + 8), BytesTo32bits(bArr, i + 12), iArr);
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Bits32ToBytes(iArr[0], bArr2, i2);
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Bits32ToBytes(iArr[1], bArr2, i2 + 4);
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Bits32ToBytes(iArr[2], bArr2, i2 + 8);
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Bits32ToBytes(iArr[3], bArr2, i2 + 12);
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return 16;
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}
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protected final void CAST_Encipher(int i, int i2, int i3, int i4, int[] iArr) {
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int i5;
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int i6 = 0;
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while (true) {
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if (i6 >= 6) {
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break;
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}
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int i7 = i6 << 2;
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i3 ^= F1(i4, this._Km[i7], this._Kr[i7]);
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int i8 = i7 + 1;
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i2 ^= F2(i3, this._Km[i8], this._Kr[i8]);
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int i9 = i7 + 2;
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i ^= F3(i2, this._Km[i9], this._Kr[i9]);
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int i10 = i7 + 3;
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i4 ^= F1(i, this._Km[i10], this._Kr[i10]);
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i6++;
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}
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for (i5 = 6; i5 < 12; i5++) {
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int i11 = i5 << 2;
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int i12 = i11 + 3;
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i4 ^= F1(i, this._Km[i12], this._Kr[i12]);
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int i13 = i11 + 2;
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i ^= F3(i2, this._Km[i13], this._Kr[i13]);
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int i14 = i11 + 1;
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i2 ^= F2(i3, this._Km[i14], this._Kr[i14]);
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i3 ^= F1(i4, this._Km[i11], this._Kr[i11]);
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}
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iArr[0] = i;
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iArr[1] = i2;
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iArr[2] = i3;
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iArr[3] = i4;
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}
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protected final void CAST_Decipher(int i, int i2, int i3, int i4, int[] iArr) {
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int i5;
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int i6 = 0;
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while (true) {
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if (i6 >= 6) {
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break;
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}
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int i7 = (11 - i6) << 2;
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i3 ^= F1(i4, this._Km[i7], this._Kr[i7]);
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int i8 = i7 + 1;
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i2 ^= F2(i3, this._Km[i8], this._Kr[i8]);
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int i9 = i7 + 2;
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i ^= F3(i2, this._Km[i9], this._Kr[i9]);
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int i10 = i7 + 3;
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i4 ^= F1(i, this._Km[i10], this._Kr[i10]);
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i6++;
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}
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for (i5 = 6; i5 < 12; i5++) {
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int i11 = (11 - i5) << 2;
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int i12 = i11 + 3;
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i4 ^= F1(i, this._Km[i12], this._Kr[i12]);
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int i13 = i11 + 2;
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i ^= F3(i2, this._Km[i13], this._Kr[i13]);
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int i14 = i11 + 1;
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i2 ^= F2(i3, this._Km[i14], this._Kr[i14]);
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i3 ^= F1(i4, this._Km[i11], this._Kr[i11]);
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}
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iArr[0] = i;
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iArr[1] = i2;
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iArr[2] = i3;
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iArr[3] = i4;
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}
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}
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