88 lines
2.5 KiB
Java
88 lines
2.5 KiB
Java
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package org.bouncycastle.crypto.prng;
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import com.google.common.primitives.UnsignedBytes;
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import java.io.ByteArrayOutputStream;
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import java.io.IOException;
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import java.security.SecureRandom;
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/* loaded from: classes6.dex */
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public class FixedSecureRandom extends SecureRandom {
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private byte[] _data;
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private int _index;
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private int _intPad;
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@Override // java.util.Random
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public long nextLong() {
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return (nextValue() << 56) | (nextValue() << 48) | (nextValue() << 40) | (nextValue() << 32) | (nextValue() << 24) | (nextValue() << 16) | (nextValue() << 8) | nextValue();
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}
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@Override // java.util.Random
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public int nextInt() {
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int nextValue = (nextValue() << 24) | (nextValue() << 16);
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int i = this._intPad;
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if (i == 2) {
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this._intPad = i - 1;
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} else {
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nextValue |= nextValue() << 8;
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}
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int i2 = this._intPad;
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if (i2 != 1) {
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return nextValue | nextValue();
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}
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this._intPad = i2 - 1;
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return nextValue;
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}
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@Override // java.security.SecureRandom, java.util.Random
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public void nextBytes(byte[] bArr) {
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System.arraycopy(this._data, this._index, bArr, 0, bArr.length);
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this._index += bArr.length;
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}
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public boolean isExhausted() {
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return this._index == this._data.length;
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}
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@Override // java.security.SecureRandom
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public byte[] generateSeed(int i) {
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byte[] bArr = new byte[i];
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nextBytes(bArr);
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return bArr;
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}
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private int nextValue() {
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byte[] bArr = this._data;
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int i = this._index;
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this._index = i + 1;
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return bArr[i] & UnsignedBytes.MAX_VALUE;
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}
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public FixedSecureRandom(byte[][] bArr) {
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this(false, bArr);
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}
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public FixedSecureRandom(byte[] bArr) {
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this(false, new byte[][]{bArr});
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}
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public FixedSecureRandom(boolean z, byte[][] bArr) {
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ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
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for (int i = 0; i != bArr.length; i++) {
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try {
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byteArrayOutputStream.write(bArr[i]);
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} catch (IOException unused) {
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throw new IllegalArgumentException("can't save value array.");
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}
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}
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byte[] byteArray = byteArrayOutputStream.toByteArray();
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this._data = byteArray;
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if (z) {
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this._intPad = byteArray.length % 4;
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}
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}
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public FixedSecureRandom(boolean z, byte[] bArr) {
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this(z, new byte[][]{bArr});
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}
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}
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