Add Discord community version (64-bit only)

- Added realracing3-community.apk (71.57 MB)
- Removed 32-bit support (armeabi-v7a)
- Only includes arm64-v8a libraries
- Decompiled source code included
- Added README-community.md with analysis

decompiled-community/sources/com/facebook/ads/internal/util/common/FbValidationUtils.java

@@ -0,0 +1,39 @@
+package com.facebook.ads.internal.util.common;
+
+import android.content.pm.PackageInfo;
+import android.content.pm.Signature;
+import android.util.Base64;
+import androidx.annotation.Nullable;
+import java.security.MessageDigest;
+import java.security.NoSuchAlgorithmException;
+
+/* loaded from: classes2.dex */
+public class FbValidationUtils {
+    public static final String DEBUG_FB_PACKAGE = "com.facebook.wakizashi";
+    public static final String FB4A_SHA256_HASH = "4/nh4M+Z0OVqBVumXiQbM5n3zqUkMmsM3W7BMn7Q/cE=";
+    public static final String FB_PACKAGE = "com.facebook.katana";
+
+    public static String getSigningCertificate(@Nullable PackageInfo packageInfo) {
+        if (packageInfo == null) {
+            return "";
+        }
+        try {
+            Signature[] signatureArr = packageInfo.signatures;
+            return signatureArr.length == 0 ? "" : calculateSHA256Fingerprint(signatureArr[0].toByteArray());
+        } catch (NoSuchAlgorithmException unused) {
+            return "";
+        }
+    }
+
+    private static String calculateSHA256Fingerprint(byte[] bArr) throws NoSuchAlgorithmException {
+        return Base64.encodeToString(MessageDigest.getInstance("SHA256").digest(bArr), 2);
+    }
+
+    public static boolean isFbSigningCertificateValid(String str) {
+        return isFbSigningCertificateValid(str, FB4A_SHA256_HASH);
+    }
+
+    public static boolean isFbSigningCertificateValid(String str, String str2) {
+        return str2.equals(str);
+    }
+}