42 lines
1.5 KiB
Java
42 lines
1.5 KiB
Java
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package org.bouncycastle.crypto.prng;
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import java.security.SecureRandom;
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import org.bouncycastle.crypto.BlockCipher;
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import org.bouncycastle.crypto.params.KeyParameter;
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import org.bouncycastle.util.Pack;
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/* loaded from: classes6.dex */
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public class X931SecureRandomBuilder {
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private byte[] dateTimeVector;
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private EntropySourceProvider entropySourceProvider;
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private SecureRandom random;
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public X931SecureRandomBuilder setDateTimeVector(byte[] bArr) {
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this.dateTimeVector = bArr;
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return this;
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}
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public X931SecureRandom build(BlockCipher blockCipher, KeyParameter keyParameter, boolean z) {
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if (this.dateTimeVector == null) {
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this.dateTimeVector = new byte[blockCipher.getBlockSize()];
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Pack.longToBigEndian(System.currentTimeMillis(), this.dateTimeVector, 0);
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}
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blockCipher.init(true, keyParameter);
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return new X931SecureRandom(this.random, new X931RNG(blockCipher, this.dateTimeVector, this.entropySourceProvider.get(blockCipher.getBlockSize() << 3)), z);
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}
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public X931SecureRandomBuilder(EntropySourceProvider entropySourceProvider) {
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this.random = null;
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this.entropySourceProvider = entropySourceProvider;
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}
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public X931SecureRandomBuilder(SecureRandom secureRandom, boolean z) {
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this.random = secureRandom;
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this.entropySourceProvider = new BasicEntropySourceProvider(secureRandom, z);
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}
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public X931SecureRandomBuilder() {
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this(new SecureRandom(), false);
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}
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}
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