37 lines
1.2 KiB
Java
37 lines
1.2 KiB
Java
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package org.bouncycastle.crypto.paddings;
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import java.security.SecureRandom;
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import org.bouncycastle.crypto.InvalidCipherTextException;
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/* loaded from: classes6.dex */
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public class TBCPadding implements BlockCipherPadding {
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@Override // org.bouncycastle.crypto.paddings.BlockCipherPadding
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public void init(SecureRandom secureRandom) throws IllegalArgumentException {
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}
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@Override // org.bouncycastle.crypto.paddings.BlockCipherPadding
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public int padCount(byte[] bArr) throws InvalidCipherTextException {
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byte b = bArr[bArr.length - 1];
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int length = bArr.length - 1;
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while (length > 0 && bArr[length - 1] == b) {
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length--;
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}
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return bArr.length - length;
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}
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@Override // org.bouncycastle.crypto.paddings.BlockCipherPadding
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public String getPaddingName() {
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return "TBC";
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}
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@Override // org.bouncycastle.crypto.paddings.BlockCipherPadding
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public int addPadding(byte[] bArr, int i) {
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int length = bArr.length;
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byte b = (byte) ((i <= 0 ? (bArr[bArr.length + (-1)] & 1) == 0 : (bArr[i + (-1)] & 1) == 0) ? 255 : 0);
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for (int i2 = i; i2 < bArr.length; i2++) {
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bArr[i2] = b;
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}
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return length - i;
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}
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}
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