Android 12 introduced Keystore 2.0 , a complete rewrite of the KMS Service. Features include:
For higher security, Android supports . This is a dedicated security chip (like a discrete HSM) within the device. When the Android KMS Service detects a StrongBox key, it routes the operation to this chip, which is even harder to physically attack than the TEE. android kms service
In Android, there is no single service literally named "KMS." Instead, the functionality is distributed across several layers: (system service), Keymaster HAL (hardware abstraction), and Gatekeeper (authentication). This review synthesizes these components into the concept of an Android KMS. Android 12 introduced Keystore 2