34 lines
1.0 KiB
Java
34 lines
1.0 KiB
Java
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package com.google.android.gms.internal.p002firebaseauthapi;
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import java.util.Arrays;
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/* loaded from: classes2.dex */
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public final class zziz {
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public static byte[] zza(byte[] bArr) {
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int length = bArr.length;
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if (length >= 16) {
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throw new IllegalArgumentException("x must be smaller than a block.");
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}
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byte[] copyOf = Arrays.copyOf(bArr, 16);
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copyOf[length] = Byte.MIN_VALUE;
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return copyOf;
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}
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public static byte[] zzb(byte[] bArr) {
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if (bArr.length != 16) {
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throw new IllegalArgumentException("value must be a block.");
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}
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byte[] bArr2 = new byte[16];
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for (int i = 0; i < 16; i++) {
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byte b = bArr[i];
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byte b2 = (byte) ((b + b) & 254);
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bArr2[i] = b2;
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if (i < 15) {
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bArr2[i] = (byte) (((bArr[i + 1] >> 7) & 1) | b2);
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}
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}
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bArr2[15] = (byte) (((byte) ((bArr[0] >> 7) & 135)) ^ bArr2[15]);
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return bArr2;
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}
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}
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