End-to-End Integrated Attestation for Android and iOS – Unified, Production-Ready.

Android iOS Policy-driven Battle-tested Open-Source

Need your backend to remotely verify device and app integrity?
Services like Play Protect reduce risk, but don’t provide proof.

Attestation does — and Warden Supreme makes it effortless, covering Android and delivering iOS assurance beyond App Attest through a single, unified API across your stack.

Android-only or iOS-only today? You still benefit from sane defaults, quirk workarounds, and externalised policy configuration.

Learn more Start integrating Services

Millions of devices attested in production – and counting.

Why Warden Supreme?

Unified Verification

One verifier for Android Key Attestation and Apple App Attest.

One Consistent API

Shared APIs across server, Android and iOS clients.

Policy-Driven Checks

Define and evolve verification policies without client rewrites.

Get Going, Fast

App integration in two lines of code – no cheap tricks, no sleight of hand.

Production-Proven

Built on the battle-tested WARDEN stack, now consolidated and refined.

Risk-Based

Grounded in threat modelling and platform characteristics – privacy-first.

How It Works

1

Define Policy

Specify what "trusted" means in your environment. Your policy, your rules.

2

Plug in Verifier

Add two HTTPS endpoints to your service and connect the verifier.

3

Integrate into Apps

Two lines of code is all it takes to get our mobile clients attested.

4

Issue Certificates

Create hardware‑backed keys and certify them based on your policy.

Explore the Docs

Background

Why attestation? Primer, threat models, and platform specifics.

Start here

Technical Deep Dive

Android attestation, iOS App Attest, and platform quirks.

Android iOS

Integration

End-to-end implementation guide, config, and data model.

Start integrating

Glossary

Terminology and definitions across all things attestation.

Browse glossary

This project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No 959072.