Triad: Trusted Timestamps in Untrusted Environments

arXiv:2311.06156v2 Announce Type: replace
Abstract: 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 …

adversaries aim applications arxiv cloud cloud infrastructure cs.cr cs.dc environments harbor hardware infrastructure measurement operating system security services system timestamps untrusted