package org.bouncycastle.crypto.macs; import com.google.common.base.Ascii; import com.google.common.primitives.UnsignedBytes; import org.bouncycastle.crypto.CipherParameters; import org.bouncycastle.crypto.DataLengthException; import org.bouncycastle.crypto.Mac; import org.bouncycastle.crypto.params.KeyParameter; import org.bouncycastle.crypto.params.ParametersWithSBox; import org.bouncycastle.crypto.tls.CipherSuite; /* loaded from: classes6.dex */ public class GOST28147Mac implements Mac { private int blockSize = 8; private int macSize = 4; private boolean firstStep = true; private int[] workingKey = null; private byte[] S = {9, 6, 3, 2, 8, 11, 1, 7, 10, 4, 14, 15, 12, 0, 13, 5, 3, 7, 14, 9, 8, 10, 15, 0, 5, 2, 6, 12, 11, 4, 13, 1, 14, 4, 6, 2, 11, 3, 13, 8, 12, 15, 5, 10, 0, 7, 1, 9, 14, 7, 10, 12, 13, 1, 3, 9, 0, 2, 11, 4, 15, 8, 5, 6, 11, 5, 1, 9, 8, 13, 15, 0, 14, 4, 2, 3, 12, 7, 10, 6, 3, 10, 13, 12, 1, 2, 0, 11, 7, 5, 9, 4, 8, 15, 14, 6, 1, 13, 2, 9, 7, 10, 6, 0, 8, 12, 4, 5, 15, 3, 11, 14, 11, 10, 15, 5, 0, 12, 14, 8, 6, 2, 3, 9, 1, 7, 13, 4}; private byte[] mac = new byte[8]; private byte[] buf = new byte[8]; private int bufOff = 0; @Override // org.bouncycastle.crypto.Mac public void update(byte[] bArr, int i, int i2) throws DataLengthException, IllegalStateException { if (i2 < 0) { throw new IllegalArgumentException("Can't have a negative input length!"); } int i3 = this.blockSize; int i4 = this.bufOff; int i5 = i3 - i4; if (i2 > i5) { System.arraycopy(bArr, i, this.buf, i4, i5); byte[] bArr2 = this.buf; byte[] bArr3 = new byte[bArr2.length]; System.arraycopy(bArr2, 0, bArr3, 0, this.mac.length); if (this.firstStep) { this.firstStep = false; } else { bArr3 = CM5func(this.buf, 0, this.mac); } gost28147MacFunc(this.workingKey, bArr3, 0, this.mac, 0); this.bufOff = 0; while (true) { i2 -= i5; i += i5; if (i2 <= this.blockSize) { break; } gost28147MacFunc(this.workingKey, CM5func(bArr, i, this.mac), 0, this.mac, 0); i5 = this.blockSize; } } System.arraycopy(bArr, i, this.buf, this.bufOff, i2); this.bufOff += i2; } @Override // org.bouncycastle.crypto.Mac public void update(byte b) throws IllegalStateException { int i = this.bufOff; byte[] bArr = this.buf; if (i == bArr.length) { byte[] bArr2 = new byte[bArr.length]; System.arraycopy(bArr, 0, bArr2, 0, this.mac.length); if (this.firstStep) { this.firstStep = false; } else { bArr2 = CM5func(this.buf, 0, this.mac); } gost28147MacFunc(this.workingKey, bArr2, 0, this.mac, 0); this.bufOff = 0; } byte[] bArr3 = this.buf; int i2 = this.bufOff; this.bufOff = i2 + 1; bArr3[i2] = b; } @Override // org.bouncycastle.crypto.Mac public void reset() { int i = 0; while (true) { byte[] bArr = this.buf; if (i >= bArr.length) { this.bufOff = 0; this.firstStep = true; return; } else { bArr[i] = 0; i++; } } } @Override // org.bouncycastle.crypto.Mac public void init(CipherParameters cipherParameters) throws IllegalArgumentException { reset(); this.buf = new byte[this.blockSize]; if (cipherParameters instanceof ParametersWithSBox) { ParametersWithSBox parametersWithSBox = (ParametersWithSBox) cipherParameters; System.arraycopy(parametersWithSBox.getSBox(), 0, this.S, 0, parametersWithSBox.getSBox().length); if (parametersWithSBox.getParameters() != null) { this.workingKey = generateWorkingKey(((KeyParameter) parametersWithSBox.getParameters()).getKey()); return; } return; } if (cipherParameters instanceof KeyParameter) { this.workingKey = generateWorkingKey(((KeyParameter) cipherParameters).getKey()); } else { StringBuilder sb = new StringBuilder("invalid parameter passed to GOST28147 init - "); sb.append(cipherParameters.getClass().getName()); throw new IllegalArgumentException(sb.toString()); } } @Override // org.bouncycastle.crypto.Mac public int getMacSize() { return this.macSize; } @Override // org.bouncycastle.crypto.Mac public String getAlgorithmName() { return "GOST28147Mac"; } @Override // org.bouncycastle.crypto.Mac public int doFinal(byte[] bArr, int i) throws DataLengthException, IllegalStateException { while (true) { int i2 = this.bufOff; if (i2 >= this.blockSize) { break; } this.buf[i2] = 0; this.bufOff = i2 + 1; } byte[] bArr2 = this.buf; byte[] bArr3 = new byte[bArr2.length]; System.arraycopy(bArr2, 0, bArr3, 0, this.mac.length); if (this.firstStep) { this.firstStep = false; } else { bArr3 = CM5func(this.buf, 0, this.mac); } gost28147MacFunc(this.workingKey, bArr3, 0, this.mac, 0); byte[] bArr4 = this.mac; int length = bArr4.length / 2; int i3 = this.macSize; System.arraycopy(bArr4, length - i3, bArr, i, i3); reset(); return this.macSize; } private void intTobytes(int i, byte[] bArr, int i2) { bArr[i2 + 3] = (byte) (i >>> 24); bArr[i2 + 2] = (byte) (i >>> 16); bArr[i2 + 1] = (byte) (i >>> 8); bArr[i2] = (byte) i; } private int gost28147_mainStep(int i, int i2) { int i3 = i2 + i; byte[] bArr = this.S; int i4 = bArr[i3 & 15] + (bArr[((i3 >> 4) & 15) + 16] << 4) + (bArr[((i3 >> 8) & 15) + 32] << 8) + (bArr[((i3 >> 12) & 15) + 48] << 12) + (bArr[((i3 >> 16) & 15) + 64] << 16) + (bArr[((i3 >> 20) & 15) + 80] << Ascii.DC4) + (bArr[((i3 >> 24) & 15) + 96] << Ascii.CAN) + (bArr[((i3 >> 28) & 15) + 112] << 28); return (i4 << 11) | (i4 >>> 21); } private void gost28147MacFunc(int[] iArr, byte[] bArr, int i, byte[] bArr2, int i2) { int bytesToint = bytesToint(bArr, i); int bytesToint2 = bytesToint(bArr, i + 4); for (int i3 = 0; i3 < 2; i3++) { int i4 = 0; while (i4 < 8) { int gost28147_mainStep = gost28147_mainStep(bytesToint, iArr[i4]); i4++; int i5 = bytesToint; bytesToint = bytesToint2 ^ gost28147_mainStep; bytesToint2 = i5; } } intTobytes(bytesToint, bArr2, i2); intTobytes(bytesToint2, bArr2, i2 + 4); } private int[] generateWorkingKey(byte[] bArr) { if (bArr.length != 32) { throw new IllegalArgumentException("Key length invalid. Key needs to be 32 byte - 256 bit!!!"); } int[] iArr = new int[8]; for (int i = 0; i != 8; i++) { iArr[i] = bytesToint(bArr, i << 2); } return iArr; } private int bytesToint(byte[] bArr, int i) { return ((bArr[i + 3] << Ascii.CAN) & (-16777216)) + ((bArr[i + 2] << 16) & 16711680) + ((bArr[i + 1] << 8) & CipherSuite.DRAFT_TLS_DHE_RSA_WITH_AES_128_OCB) + (bArr[i] & UnsignedBytes.MAX_VALUE); } private byte[] CM5func(byte[] bArr, int i, byte[] bArr2) { byte[] bArr3 = new byte[bArr.length - i]; System.arraycopy(bArr, i, bArr3, 0, bArr2.length); for (int i2 = 0; i2 != bArr2.length; i2++) { bArr3[i2] = (byte) (bArr3[i2] ^ bArr2[i2]); } return bArr3; } }