feat: dstack TEE support for confidential deployment#29
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- Key provider: Auto/Static/Dstack key resolution with Unix socket client - Column encryption: AES-256-GCM with version-byte prefix for gradual migration - Attestation endpoint: GET /attestation returns TDX quote in TEE mode - Docker: CARGO_FEATURES build arg + compose files for 3 dstack topologies - Feature-gated: `cargo build --features dstack` enables TEE support
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Summary
Auto/Static/Dstackkey resolution viaresolve_keys(). Dstack mode derives keys deterministically from TEE KMS over a Unix domain socket (/var/run/dstack.sock). Auto mode probes env var then socket.tinycloud-core/src/encryption.rswith0x01version-byte prefix. Legacy plaintext data passes through transparently. Encryption hooks in delegation/invocation save (after hashing) and read paths.GET /attestation?<nonce>returns TDX quote + compose hash in TEE mode, classic response otherwise./versionendpoint: AddsinTEE: boolfield indicating whether the instance is running inside a TEE.cargo build --features dstackenables TEE support. Default build has zero dstack code.CARGO_FEATURESbuild arg + 3 compose files (SQLite, Postgres+S3, full confidential).Test plan
cargo build— compiles without dstack featurecargo build --features dstack— compiles with dstackcargo clippy -- -D warnings— clean (both modes)cargo fmt -- --check— cleancargo test— all 43 tests pass (including 7 new encryption tests)DSTACK_SIMULATOR_ENDPOINT)GET /attestationreturns valid response with simulatorGET /versionshows"inTEE": truein TEE mode