feat: add fetch-kms-secrets composite action#108
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GitHub OIDC -> Volcengine STS AssumeRoleWithOIDC -> KMS GetSecretValue -> hybrid (AES-256-GCM + RSA-OAEP-SHA256) decrypt -> JSON k/v -> $GITHUB_ENV. Zero runtime deps. scripts/envelope.js is the single source of truth for the OK1 envelope (shared by the runtime and the ops CLI); scripts/secret-tool.js provides keygen/encrypt/decrypt. Hardening: per-line masking for multi-line secret values; allowlist validation of volc-kms-region before it is interpolated into the KMS host. Unit tests (node --test) cover the envelope, runtime/CLI parity, V4 signing, keygen, and fail-fast paths.
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What
Adds
fetch-kms-secrets, a composite action that bootstraps CI secrets without any long-lived Volcengine AK/SK:GitHub OIDC → Volcengine STS
AssumeRoleWithOIDC→ temporary creds → KMSGetSecretValue→ hybrid (AES-256-GCM + RSA-OAEP-SHA256) decrypt →$GITHUB_ENV.Design
crypto/fs/https). Nonpm install, no bundling, no vendoreddist/— the smallest supply-chain surface for a secret-handling action.scripts/envelope.js— single source of truth for the "OK1" envelope (seal/open), shared by the runtime and the ops CLI so they can never drift.scripts/secret-tool.js— ops CLI:keygen/encrypt/decrypt.AssumeRoleWithOIDCis anonymous (matches OneKey backendutils/secrets/volcengine-oidc); only the KMS call is V4-signed (hand-rolled HMAC-SHA256 chain).Security
::add-mask::-registered before use; multi-line values are masked per line.volc-kms-regionis allowlist-validated before interpolation into the KMS host (anti-SSRF).Tests
npm test(node --test, zero deps) — 22 tests: envelope round-trip, runtime/CLI parity, GCM tamper rejection, malformed-envelope rejection, V4 signature structure, keygen perms/overwrite/bits, runtime fail-fast.Verification
Verified end-to-end on a real Volcengine account (cn-beijing): OIDC → STS → KMS GetSecretValue → hybrid decrypt → masked value in
$GITHUB_ENV.See
fetch-kms-secrets/README.mdfor usage and the KMS payload contract.