CODEWITHSUNDEEP
androiddrmmmcufs
nishad kamdar
nishad kamdar

Reputation: 107

How to find out if an android device is using Trusty TEE security OS?

I am new to Trusty TEE OS. Is there any way to find out if an Android Device uses such an OS without rooting the device ?

AFAIK there, DRM (Digital Rights Management) is the most widely used application of Trusty OS. Some examples for DRM frameworks are Widevine/PlayReady/ClearKey.

Does it mean that if any of these frameworks are present in the Android device, it is safe to assume that there is an underlying Trusty TEE OS in use ?

Thanks

Upvotes: 0

Views: 2035

Answers (1)

Mick
Mick

Reputation: 25491

Both Widevine and PlayReady support multiple security levels - the most secure level for each is tied to the TEE but lower levels are typically not.

Hence, a simple check for DRM will not tell you if the device has TEE.

On older versions of Widevine you would determine the security level fairly easily which would give you a guide - I don't think you could take it as absolute:

The same approach does not work for the current version of Widevine.

I don't believe there is a simple 'TEE supported' API - there are some tricks to try to determine - see the discussion in this answer: https://stackoverflow.com/a/64422042/334402

Upvotes: 0

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