中文

An Android SDK for local device fingerprinting and runtime risk detection. Built on a Java + C++17 dual-layer architecture, RiskEngine collects device signals, runs environment detectors, and returns a structured RiskReport to the host app.

Requirements

• JDK 17+
• Android Gradle Plugin 8.13.1
• Compile SDK 36 / Min SDK 30
• CMake 3.22.1+, C++17

Quick Start

Build the SDK and demo:

./build.sh sdk      # build SDK only
./build.sh demo     # build demo app
./build.sh all      # build both
./build.sh clean    # clean

Or use Gradle directly:

./gradlew :riskengine-sdk:assembleRelease
./gradlew :demo:assembleDebug

Initialize and collect:

RiskEngineConfig config = new RiskEngineConfig.Builder()
        .debugLog(true)
        .collectTimeout(15000)
        .build();

RiskEngine.init(context, config);

RiskEngine.collect(new RiskEngineCallback() {
    @Override
    public void onSuccess(RiskReport report) {
        Log.d("RiskEngine", "Risk: " + report.getOverallRiskLevel());
        Log.d("RiskEngine", "Score: " + report.getRiskScore());
    }

    @Override
    public void onError(Throwable error) {
        Log.e("RiskEngine", "Collect failed", error);
    }
});

Synchronous collection:

RiskReport report = RiskEngine.collectSync();
String json = RiskEngine.getReportJson();

Call RiskEngine.shutdown() when the SDK is no longer needed.

Core Detections

Area	Examples
Root	su, Magisk, dangerous props, writable system paths
Hook	Xposed/LSPosed, Frida, suspicious maps and processes
Emulator	Build props, QEMU artifacts, native emulator markers
Debugging	Debug flags, tracer pid, gdb/lldb/IDA artifacts
Sandbox / container	Container files, cgroup markers, virtualized paths
Device fingerprint	Android ID, build props, telephony, Wi-Fi, Bluetooth, screen, APK signature

Output

RiskReport includes:

Field	Description
fingerprint	Aggregated device fingerprint values
detections	Detector results and evidence
overallRiskLevel	Final risk level
riskScore	Numeric score derived from detector results
timestampMs	Collection timestamp
sdkVersion	SDK version string

Public API

API	Description
RiskEngine.init(Context, RiskEngineConfig)	Initialize the SDK
RiskEngine.collect(RiskEngineCallback)	Run collection asynchronously
RiskEngine.collectSync()	Run collection synchronously
RiskEngine.getReportJson()	Collect and return the report as JSON
RiskEngine.shutdown()	Release SDK resources
RiskEngineConfig.Builder.debugLog(boolean)	Toggle SDK logs
RiskEngineConfig.Builder.collectTimeout(long)	Set collection timeout (ms)

The SDK ships with consumer-rules.pro; host apps need no extra ProGuard rules for the public API.

Documentation

See doc/Implementation_Details.md for the full implementation details.

License

See LICENSE.