46 lines
1.7 KiB
Java
46 lines
1.7 KiB
Java
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package org.bouncycastle.crypto.engines;
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import com.google.common.primitives.UnsignedBytes;
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/* loaded from: classes6.dex */
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public class VMPCKSA3Engine extends VMPCEngine {
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@Override // org.bouncycastle.crypto.engines.VMPCEngine
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protected void initKey(byte[] bArr, byte[] bArr2) {
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this.s = (byte) 0;
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this.P = new byte[256];
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for (int i = 0; i < 256; i++) {
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this.P[i] = (byte) i;
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}
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for (int i2 = 0; i2 < 768; i2++) {
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int i3 = i2 & 255;
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this.s = this.P[(this.s + this.P[i3] + bArr[i2 % bArr.length]) & 255];
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byte b = this.P[i3];
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byte[] bArr3 = this.P;
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bArr3[i3] = bArr3[this.s & UnsignedBytes.MAX_VALUE];
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this.P[this.s & UnsignedBytes.MAX_VALUE] = b;
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}
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for (int i4 = 0; i4 < 768; i4++) {
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int i5 = i4 & 255;
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this.s = this.P[(this.s + this.P[i5] + bArr2[i4 % bArr2.length]) & 255];
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byte b2 = this.P[i5];
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byte[] bArr4 = this.P;
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bArr4[i5] = bArr4[this.s & UnsignedBytes.MAX_VALUE];
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this.P[this.s & UnsignedBytes.MAX_VALUE] = b2;
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}
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for (int i6 = 0; i6 < 768; i6++) {
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int i7 = i6 & 255;
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this.s = this.P[(this.s + this.P[i7] + bArr[i6 % bArr.length]) & 255];
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byte b3 = this.P[i7];
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byte[] bArr5 = this.P;
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bArr5[i7] = bArr5[this.s & UnsignedBytes.MAX_VALUE];
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this.P[this.s & UnsignedBytes.MAX_VALUE] = b3;
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}
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this.n = (byte) 0;
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}
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@Override // org.bouncycastle.crypto.engines.VMPCEngine, org.bouncycastle.crypto.StreamCipher
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public String getAlgorithmName() {
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return "VMPC-KSA3";
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}
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}
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