Keystone: towards an open standard for trusted execution environments

" summary

Keystone presents an open framework for building customizable trusted execution environments (TEEs) on RISC‑V hardware by offering composable security primitives rather than a single fixed TEE design. It targets both enclave developers and platform providers, providing a generic, formally‑verified interface so TEEs can be adapted to different threat models and device configurations with minimal additional hardware cost, and covers the project’s current status and planned future work.

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