43 lines
1.3 KiB
Java
43 lines
1.3 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 ISO7816d4Padding 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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int length = bArr.length - 1;
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while (length > 0 && bArr[length] == 0) {
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length--;
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}
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if (bArr[length] == Byte.MIN_VALUE) {
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return bArr.length - length;
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}
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throw new InvalidCipherTextException("pad block corrupted");
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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 "ISO7816-4";
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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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bArr[i] = Byte.MIN_VALUE;
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int i2 = i;
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while (true) {
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i2++;
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if (i2 >= bArr.length) {
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return length - i;
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}
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bArr[i2] = 0;
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}
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}
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}
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