Files
rustfs/crates/kms/AGENTS.md
T
唐小鸭 ad7663afd1 refactor(sse): decouple ecstore and harden KMS lifecycle (#5435)
* refactor(sse): decouple encryption from ecstore

* feat(kms): enhance KMS service manager with runtime state and persistence support

* feat(kms): add local key export functionality for SSE-S3 migration tests

* fix(kms): keep local key export narrowly scoped

* fix(sse): validate copy source customer algorithm

---------

Co-authored-by: Zhengchao An <anzhengchao@gmail.com>
2026-07-30 12:39:25 +08:00

1.6 KiB

KMS Crate Instructions

Applies to crates/kms/.

Change Coordination

When changing key-management behavior, verify compatibility with:

  • rustfs/src/storage/ecfs.rs
  • rustfs/src/admin/handlers/kms.rs
  • rustfs/src/admin/handlers/kms_dynamic.rs
  • rustfs/src/admin/handlers/kms_keys.rs
  • rustfs/src/admin/handlers/kms_management.rs

Security

  • Never log plaintext keys, key material, or sensitive request payloads.
  • Prefer explicit error propagation over panic paths.

Testing

For local KMS end-to-end tests, keep proxy bypass settings:

NO_PROXY=127.0.0.1,localhost HTTP_PROXY= HTTPS_PROXY= http_proxy= https_proxy= \
cargo test --package e2e_test test_local_kms_end_to_end -- --nocapture --test-threads=1

Local Key Export for SSE-S3 Migration Tests

Use the read-only local_kms_key_decrypt example to export an AES-256 Local KMS key as the base64 value expected by RUSTFS_SSE_S3_MASTER_KEY:

export RUSTFS_KMS_LOCAL_MASTER_KEY='<local-kms-at-rest-master-key>'
export RUSTFS_SSE_S3_MASTER_KEY="$(
  cargo run -q -p rustfs-kms --example local_kms_key_decrypt -- \
    /absolute/path/to/<key-id>.key
)"

For a plaintext-dev-only Local KMS key file, RUSTFS_KMS_LOCAL_MASTER_KEY is not required.

The example writes only the base64-encoded 32-byte key to stdout. Diagnostics go to stderr. Never paste its output into logs, shell history, issue comments, or committed configuration. The export path must remain read-only and must reuse LocalKmsClient decoding so current Argon2id and legacy key-file compatibility stay aligned with the backend.