83 lines
3.0 KiB
Java
83 lines
3.0 KiB
Java
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package org.bouncycastle.crypto.prng.drbg;
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import java.util.Hashtable;
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import org.bouncycastle.crypto.Digest;
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import org.bouncycastle.crypto.Mac;
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import org.bouncycastle.pqc.jcajce.spec.McElieceCCA2KeyGenParameterSpec;
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import org.bouncycastle.util.Integers;
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/* loaded from: classes6.dex */
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class Utils {
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static final Hashtable maxSecurityStrengths;
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/* JADX INFO: Access modifiers changed from: package-private */
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public static boolean isTooLarge(byte[] bArr, int i) {
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return bArr != null && bArr.length > i;
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}
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/* JADX INFO: Access modifiers changed from: package-private */
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public static byte[] hash_df(Digest digest, byte[] bArr, int i) {
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int i2 = (i + 7) / 8;
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byte[] bArr2 = new byte[i2];
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int digestSize = i2 / digest.getDigestSize();
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int digestSize2 = digest.getDigestSize();
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byte[] bArr3 = new byte[digestSize2];
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int i3 = 1;
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int i4 = 0;
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for (int i5 = 0; i5 <= digestSize; i5++) {
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digest.update((byte) i3);
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digest.update((byte) (i >> 24));
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digest.update((byte) (i >> 16));
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digest.update((byte) (i >> 8));
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digest.update((byte) i);
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digest.update(bArr, 0, bArr.length);
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digest.doFinal(bArr3, 0);
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int i6 = i5 * digestSize2;
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int i7 = i2 - i6;
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if (i7 > digestSize2) {
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i7 = digestSize2;
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}
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System.arraycopy(bArr3, 0, bArr2, i6, i7);
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i3++;
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}
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int i8 = i % 8;
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if (i8 != 0) {
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int i9 = 8 - i8;
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int i10 = 0;
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while (i4 != i2) {
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int i11 = bArr2[i4] & 255;
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bArr2[i4] = (byte) ((i10 << (8 - i9)) | (i11 >>> i9));
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i4++;
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i10 = i11;
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}
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}
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return bArr2;
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}
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/* JADX INFO: Access modifiers changed from: package-private */
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public static int getMaxSecurityStrength(Mac mac) {
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String algorithmName = mac.getAlgorithmName();
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return ((Integer) maxSecurityStrengths.get(algorithmName.substring(0, algorithmName.indexOf("/")))).intValue();
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}
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/* JADX INFO: Access modifiers changed from: package-private */
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public static int getMaxSecurityStrength(Digest digest) {
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return ((Integer) maxSecurityStrengths.get(digest.getAlgorithmName())).intValue();
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}
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Utils() {
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}
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static {
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Hashtable hashtable = new Hashtable();
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maxSecurityStrengths = hashtable;
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hashtable.put(McElieceCCA2KeyGenParameterSpec.SHA1, Integers.valueOf(128));
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hashtable.put(McElieceCCA2KeyGenParameterSpec.SHA224, Integers.valueOf(192));
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hashtable.put(McElieceCCA2KeyGenParameterSpec.SHA256, Integers.valueOf(256));
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hashtable.put(McElieceCCA2KeyGenParameterSpec.SHA384, Integers.valueOf(256));
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hashtable.put(McElieceCCA2KeyGenParameterSpec.SHA512, Integers.valueOf(256));
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hashtable.put("SHA-512/224", Integers.valueOf(192));
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hashtable.put("SHA-512/256", Integers.valueOf(256));
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}
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}
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