@ikoz Thanks for the response!

Yeah my understanding matches yours, however to me it seems that most ARM Cortex-A series CPUs should support ARM TrustZone by default, even running on a non-secure kernel.

I did find code for some implementations of the Trusted Execution Engine (see: https://github.com/mqttz/optee-apps/tree/master which is code for benchmarking MQTT TZ).

However I also couldn't find anything in regards to other linux-based mobile operating systems (or even any desktop distro for that matter), or even Android. Which begs the question: Is nobody but Android using it at all? And even for Android it seems to be a proprietary implementation (which isn't surprising, as this alone keeps a lot of Android folk away from any other non-Android/Apple device).

Hi Ubuntu Touch Community,

I hope you all are doing well.
I'm a software developer currently researching getting ARM TrustZone/Trusted Execution Engine running on non-Android operating systems. This would allow different applications, like eGovernment apps, to run on operating systems with TrustZone support even if the device can't provide any biometric data (e.g. fingerprint). Maybe the user just doesn't want to use those features.

However, I haven't been able to find any specific information in the documentation about whether Ubuntu Touch provides any interfaces or support for ARM TrustZone. It's possible I might have missed it, so I wanted to reach out to the community here.

Could anyone provide me with some insight into whether Ubuntu Touch has any support or planned support for ARM TrustZone? Any pointers or guidance would be greatly appreciated, even if not specifically Ubuntu Touch related.

Thank you in advance for your help!