Add decompiled APK source code (JADX)

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Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

decompiled/sources/com/google/android/gms/internal/ads/zzguj.java

@@ -0,0 +1,50 @@
+package com.google.android.gms.internal.ads;
+
+import java.security.GeneralSecurityException;
+import javax.crypto.Cipher;
+import javax.crypto.spec.IvParameterSpec;
+import javax.crypto.spec.SecretKeySpec;
+
+/* loaded from: classes3.dex */
+public final class zzguj implements zzgvg {
+    private static final ThreadLocal zza = new zzgui();
+    private final SecretKeySpec zzb;
+    private final int zzc;
+    private final int zzd;
+
+    public zzguj(byte[] bArr, int i) throws GeneralSecurityException {
+        if (!zzgks.zza(2)) {
+            throw new GeneralSecurityException("Can not use AES-CTR in FIPS-mode, as BoringCrypto module is not available.");
+        }
+        zzgvm.zza(bArr.length);
+        this.zzb = new SecretKeySpec(bArr, "AES");
+        int blockSize = ((Cipher) zza.get()).getBlockSize();
+        this.zzd = blockSize;
+        if (i > blockSize) {
+            throw new GeneralSecurityException("invalid IV size");
+        }
+        this.zzc = i;
+    }
+
+    @Override // com.google.android.gms.internal.ads.zzgvg
+    public final byte[] zza(byte[] bArr) throws GeneralSecurityException {
+        int length = bArr.length;
+        int i = this.zzc;
+        if (length < i) {
+            throw new GeneralSecurityException("ciphertext too short");
+        }
+        byte[] bArr2 = new byte[i];
+        System.arraycopy(bArr, 0, bArr2, 0, i);
+        int i2 = this.zzc;
+        int i3 = length - i2;
+        byte[] bArr3 = new byte[i3];
+        Cipher cipher = (Cipher) zza.get();
+        byte[] bArr4 = new byte[this.zzd];
+        System.arraycopy(bArr2, 0, bArr4, 0, this.zzc);
+        cipher.init(2, this.zzb, new IvParameterSpec(bArr4));
+        if (cipher.doFinal(bArr, i2, i3, bArr3, 0) == i3) {
+            return bArr3;
+        }
+        throw new GeneralSecurityException("stored output's length does not match input's length");
+    }
+}