56 lines
1.8 KiB
Java
56 lines
1.8 KiB
Java
package com.google.android.gms.internal.p002firebaseauthapi;
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import java.nio.ByteBuffer;
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import java.nio.ByteOrder;
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import java.security.GeneralSecurityException;
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import java.security.InvalidKeyException;
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/* loaded from: classes2.dex */
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abstract class zzdn {
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int[] zza;
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private final int zzb;
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public zzdn(byte[] bArr, int i) throws InvalidKeyException {
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if (bArr.length != 32) {
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throw new InvalidKeyException("The key length in bytes must be 32.");
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}
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this.zza = zzdj.zzd(bArr);
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this.zzb = i;
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}
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abstract int zza();
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abstract int[] zzb(int[] iArr, int i);
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/* JADX INFO: Access modifiers changed from: package-private */
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public final ByteBuffer zzc(byte[] bArr, int i) {
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int[] zzb = zzb(zzdj.zzd(bArr), i);
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int[] iArr = (int[]) zzb.clone();
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zzdj.zzc(iArr);
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for (int i2 = 0; i2 < 16; i2++) {
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zzb[i2] = zzb[i2] + iArr[i2];
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}
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ByteBuffer order = ByteBuffer.allocate(64).order(ByteOrder.LITTLE_ENDIAN);
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order.asIntBuffer().put(zzb, 0, 16);
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return order;
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}
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public final byte[] zzd(byte[] bArr, ByteBuffer byteBuffer) throws GeneralSecurityException {
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ByteBuffer allocate = ByteBuffer.allocate(byteBuffer.remaining());
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if (bArr.length != zza()) {
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throw new GeneralSecurityException("The nonce length (in bytes) must be " + zza());
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}
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int remaining = byteBuffer.remaining();
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int i = remaining / 64;
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for (int i2 = 0; i2 < i + 1; i2++) {
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ByteBuffer zzc = zzc(bArr, this.zzb + i2);
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if (i2 == i) {
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zzpp.zza(allocate, byteBuffer, zzc, remaining % 64);
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} else {
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zzpp.zza(allocate, byteBuffer, zzc, 64);
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}
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}
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return allocate.array();
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}
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}
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