84 lines
2.4 KiB
Java
84 lines
2.4 KiB
Java
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package org.bouncycastle.crypto.digests;
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import org.bouncycastle.crypto.Xof;
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/* loaded from: classes6.dex */
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public class SHAKEDigest extends KeccakDigest implements Xof {
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@Override // org.bouncycastle.crypto.digests.KeccakDigest, org.bouncycastle.crypto.Digest
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public String getAlgorithmName() {
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StringBuilder sb = new StringBuilder("SHAKE");
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sb.append(this.fixedOutputLength);
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return sb.toString();
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}
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@Override // org.bouncycastle.crypto.Xof
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public int doOutput(byte[] bArr, int i, int i2) {
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if (!this.squeezing) {
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absorb(new byte[]{15}, 0, 4L);
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}
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squeeze(bArr, i, i2 << 3);
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return i2;
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}
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protected int doFinal(byte[] bArr, int i, int i2, byte b, int i3) {
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if (i3 < 0 || i3 > 7) {
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throw new IllegalArgumentException("'partialBits' must be in the range [0,7]");
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}
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int i4 = (b & ((1 << i3) - 1)) | (15 << i3);
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int i5 = i3 + 4;
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if (i5 >= 8) {
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this.oneByte[0] = (byte) i4;
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absorb(this.oneByte, 0, 8L);
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i5 = i3 - 4;
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i4 >>>= 8;
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}
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if (i5 > 0) {
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this.oneByte[0] = (byte) i4;
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absorb(this.oneByte, 0, i5);
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}
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squeeze(bArr, i, i2 << 3);
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reset();
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return i2;
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}
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@Override // org.bouncycastle.crypto.Xof
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public int doFinal(byte[] bArr, int i, int i2) {
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int doOutput = doOutput(bArr, i, i2);
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reset();
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return doOutput;
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}
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/* JADX INFO: Access modifiers changed from: protected */
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@Override // org.bouncycastle.crypto.digests.KeccakDigest
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public int doFinal(byte[] bArr, int i, byte b, int i2) {
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return doFinal(bArr, i, getDigestSize(), b, i2);
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}
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@Override // org.bouncycastle.crypto.digests.KeccakDigest, org.bouncycastle.crypto.Digest
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public int doFinal(byte[] bArr, int i) {
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return doFinal(bArr, i, getDigestSize());
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}
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private static int checkBitLength(int i) {
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if (i == 128 || i == 256) {
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return i;
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}
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StringBuilder sb = new StringBuilder("'bitLength' ");
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sb.append(i);
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sb.append(" not supported for SHAKE");
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throw new IllegalArgumentException(sb.toString());
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}
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public SHAKEDigest(SHAKEDigest sHAKEDigest) {
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super(sHAKEDigest);
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}
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public SHAKEDigest(int i) {
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super(checkBitLength(i));
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}
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public SHAKEDigest() {
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this(128);
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}
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}
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