Triad: Trusted Timestamps in Untrusted Environments. (arXiv:2311.06156v1 [cs.CR])

We aim to provide trusted time measurement mechanisms to applications and
cloud infrastructure deployed in environments that could harbor potential
adversaries, including the hardware infrastructure provider. Despite Trusted
Execution Environments (TEEs) providing multiple security functionalities,
timestamps from the Operating System are not covered. Nevertheless, some
services require time for validating permissions or ordering events. To address
that need, we introduce Triad, a trusted timestamp dispatcher of time readings.
The solution provides trusted timestamps enforced by mutually supportive
enclave-based clock servers …

adversaries aim applications cloud cloud infrastructure environments harbor hardware infrastructure measurement operating system permissions security services system timestamps untrusted