Keymaster TA (trusted application) is the software running in a secure context, most often in TrustZone on an ARM SoC, that provides all of the secure Keystore operations, has access to the raw key material, validates all of the access control conditions on keys, etc.

What is KeyChain in Android?

android.security.KeyChain. The KeyChain class provides access to private keys and their corresponding certificate chains in credential storage. Applications accessing the KeyChain normally go through these steps: Receive a callback from an X509KeyManager that a private key is requested.

What is StrongBox security chip?

Android’s StrongBox, which runs on this hardware enclave on Pixel phones, is used for storing cryptographic keys in an environment that’s isolated from the CPU.