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Mechanism for Secure Indicator Light (SIL) rendering under Exclaves

Determine the precise mechanism by which the Secure Indicator Light is triggered and rendered when exclaves_sensor_start is invoked, including the secure-world components involved (e.g., SILManagerComponent and SecureRTBuddyDCP) and the communication path.

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Background

The paper identifies Exclaves resources and frameworks likely related to SIL, but due to redacted code, cannot confirm the rendering pipeline.

Understanding SIL’s secure-world rendering path is important for assessing the robustness of privacy indicators against tampering.

References

Due to the redacted code in the further handling of the call, we are unable to determine the exact mechanisms regarding SIL rendering.

— Modern iOS Security Features -- A Deep Dive into SPTM, TXM, and Exclaves (2510.09272 - Steffin et al., 10 Oct 2025) in Section Secure Indicator Light — Secure Indicator Light