Keybox — Telegram

Here’s a helpful write-up regarding — a term that often appears in discussions about Android security , Google Play Integrity , and custom ROMs . What Is a “Keybox” in Android Context? A keybox is a file (usually XML or binary) containing cryptographic key material, specifically attestation keys used by Android’s Hardware-backed Keystore and Play Integrity API . These keys are signed by Google and prove that a device is genuine and hasn’t been tampered with.