58 lines
2.0 KiB
Java
58 lines
2.0 KiB
Java
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package org.bouncycastle.crypto.generators;
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import org.bouncycastle.crypto.CipherParameters;
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import org.bouncycastle.crypto.Digest;
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import org.bouncycastle.crypto.PBEParametersGenerator;
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import org.bouncycastle.crypto.digests.MD5Digest;
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import org.bouncycastle.crypto.params.KeyParameter;
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import org.bouncycastle.crypto.params.ParametersWithIV;
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/* loaded from: classes6.dex */
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public class OpenSSLPBEParametersGenerator extends PBEParametersGenerator {
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private Digest digest = new MD5Digest();
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public void init(byte[] bArr, byte[] bArr2) {
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super.init(bArr, bArr2, 1);
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}
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@Override // org.bouncycastle.crypto.PBEParametersGenerator
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public CipherParameters generateDerivedParameters(int i, int i2) {
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int i3 = i / 8;
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int i4 = i2 / 8;
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byte[] generateDerivedKey = generateDerivedKey(i3 + i4);
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return new ParametersWithIV(new KeyParameter(generateDerivedKey, 0, i3), generateDerivedKey, i3, i4);
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}
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@Override // org.bouncycastle.crypto.PBEParametersGenerator
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public CipherParameters generateDerivedParameters(int i) {
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int i2 = i / 8;
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return new KeyParameter(generateDerivedKey(i2), 0, i2);
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}
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@Override // org.bouncycastle.crypto.PBEParametersGenerator
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public CipherParameters generateDerivedMacParameters(int i) {
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return generateDerivedParameters(i);
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}
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private byte[] generateDerivedKey(int i) {
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int digestSize = this.digest.getDigestSize();
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byte[] bArr = new byte[digestSize];
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byte[] bArr2 = new byte[i];
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int i2 = 0;
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while (true) {
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this.digest.update(this.password, 0, this.password.length);
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this.digest.update(this.salt, 0, this.salt.length);
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this.digest.doFinal(bArr, 0);
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int i3 = i > digestSize ? digestSize : i;
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System.arraycopy(bArr, 0, bArr2, i2, i3);
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i2 += i3;
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i -= i3;
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if (i == 0) {
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return bArr2;
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}
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this.digest.reset();
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this.digest.update(bArr, 0, digestSize);
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}
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}
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}
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