Bug: 145836245

Clone this repo:


  1. 6f5d504 tui: Allow multiple layouts to co-exist via ILayout helper class. by Mike McTernan · 5 days ago master
  2. 6df0a29 confirmationui: Change interface to better support multiple displays by Mike McTernan · 13 days ago
  3. df78c59 trusty: confirmationui: Add support for rotated layout. by Mike McTernan · 4 weeks ago
  4. ac23680 Update references to trusty-specific libc headers by Stephen Crane · 2 years, 2 months ago
  5. e4b9987 Update to support multiple device context by ichihlu · 1 year, 9 months ago

ConfirmationUI Trusted App

This is an implementation of the ConfirmationUI trusted application for Trusty. It is meant as a reference implementation for OEMs who want to implement ConfirmationUI or “Android Protected Confirmation” and use Trusty as TEE OS.


  • Android platform/system/teeui
  • libcxx
  • freetype

Additional integration work

You will need a touch controller driver or another trusted input method for the targeted platform.

Included in this package is a sample layout as used by Pixel3(+) phones. For phones that use button on the right side of the phone this layout can be adjusted by configuring the context parameters. E.g.: (see TrustyConfirmationUI.cpp) conv.setParam(1440_px); conv.setParam(2960_px); conv.setParam(34.146_mm); conv.setParam(44.146_mm); conv.setParam(54.146_mm); conv.setParam(64.146_mm);


A default example layout is provided in examples/layouts/. To override the layout with a vendor specific one, define CONFIRMATIONUI_LAYOUTS to point to the layouts library you want to link against.