57 lines
2.1 KiB
Java
57 lines
2.1 KiB
Java
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package com.google.android.gms.internal.p002firebaseauthapi;
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import android.os.Build;
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import java.nio.ByteBuffer;
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import java.security.GeneralSecurityException;
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import java.security.spec.AlgorithmParameterSpec;
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import javax.crypto.Cipher;
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import javax.crypto.SecretKey;
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import javax.crypto.spec.GCMParameterSpec;
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import javax.crypto.spec.IvParameterSpec;
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import javax.crypto.spec.SecretKeySpec;
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/* loaded from: classes2.dex */
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public final class zzdl {
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private static final ThreadLocal zza = new zzdk();
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private final SecretKey zzb;
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private final boolean zzc;
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public zzdl(byte[] bArr, boolean z) throws GeneralSecurityException {
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if (!zzdv.zza(2)) {
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throw new GeneralSecurityException("Can not use AES-GCM in FIPS-mode, as BoringCrypto module is not available.");
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}
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zzqs.zzb(bArr.length);
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this.zzb = new SecretKeySpec(bArr, "AES");
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this.zzc = z;
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}
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public final byte[] zza(byte[] bArr, byte[] bArr2, byte[] bArr3) throws GeneralSecurityException {
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AlgorithmParameterSpec gCMParameterSpec;
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if (bArr.length != 12) {
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throw new GeneralSecurityException("iv is wrong size");
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}
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boolean z = this.zzc;
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int i = true != z ? 16 : 28;
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int length = bArr2.length;
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if (length < i) {
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throw new GeneralSecurityException("ciphertext too short");
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}
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if (!z || ByteBuffer.wrap(bArr).equals(ByteBuffer.wrap(bArr2, 0, 12))) {
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if (!zzqr.zza() || Integer.valueOf(Build.VERSION.SDK_INT).intValue() > 19) {
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gCMParameterSpec = new GCMParameterSpec(128, bArr, 0, 12);
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} else {
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gCMParameterSpec = new IvParameterSpec(bArr, 0, 12);
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}
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ThreadLocal threadLocal = zza;
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((Cipher) threadLocal.get()).init(2, this.zzb, gCMParameterSpec);
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boolean z2 = this.zzc;
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int i2 = true != z2 ? 0 : 12;
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if (z2) {
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length -= 12;
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}
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return ((Cipher) threadLocal.get()).doFinal(bArr2, i2, length);
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}
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throw new GeneralSecurityException("iv does not match prepended iv");
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}
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}
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