diff --git a/reference/components/javascript-environment.md b/reference/components/javascript-environment.md index b9aecda3..f25a4100 100644 --- a/reference/components/javascript-environment.md +++ b/reference/components/javascript-environment.md @@ -133,6 +133,18 @@ See [Logging API](../logging/api.md) for full reference. A `Map` of all resources registered on this Harper server, keyed by their URL path. Each entry contains the resource class, path, and routing metadata. Use this to look up or enumerate registered resources programmatically. +### `secrets` + +A read-only, name→value map of the scoped secrets granted to the current component (plus any `process.env`-resolved values it declared). Read secrets from the encrypted [secrets store](../security/secrets.md) without them landing in `process.env`: + +```javascript +import { secrets } from 'harper'; + +const { STRIPE_KEY } = secrets; +``` + +A module-top-level destructure is the recommended idiom — it binds correctly under every component loader. See [Secrets](../security/secrets.md) for full reference. + ### `config` The configuration object for the current application, as provided by the component's configuration (e.g. `config.yaml`). Defaults to an empty object if no configuration is provided. diff --git a/reference/environment-variables/overview.md b/reference/environment-variables/overview.md index d30d004b..eb299e18 100644 --- a/reference/environment-variables/overview.md +++ b/reference/environment-variables/overview.md @@ -13,6 +13,10 @@ Harper supports loading environment variables in Harper applications `process.en If you are looking for information on how to configure your Harper installation using environment variables, see [Configuration](../configuration/overview.md) section for more information. ::: +:::tip +For production credentials, prefer the encrypted, replicated [secrets store](../security/secrets.md) over a committed `.env` file. Secrets are stored as ciphertext, delivered to components via `process.env` or a per-component `secrets` accessor, and never appear in operation logs or replication payloads. The same `enc:v1:` envelope format also lets you encrypt individual `.env` values at rest. +::: + ## Configuration | Option | Type | Required | Description | diff --git a/reference/operations-api/operations.md b/reference/operations-api/operations.md index e958e881..034f6676 100644 --- a/reference/operations-api/operations.md +++ b/reference/operations-api/operations.md @@ -606,6 +606,55 @@ Additional parameters: - `urlPath` — override the HTTP URL path the component is mounted at (e.g. `"/api/v2"`) - `install_allow_scripts` — set to `true` to allow npm pre/post install scripts (disabled by default) +- `credentials` — credentials for installing a component from a private npm registry or private git repository (see below) + +#### Deploy credentials (`credentials`) + +When a component is installed from a private source, `credentials` supplies the authentication. It is an array of entries; each entry is one of two kinds, identified by its key: + +- **npm registry auth** — an entry with a `registry` key, applied to a private npm registry. +- **git host auth** — an entry with a `host` key, applied to a private git repository fetched by reference (e.g. `package: "github:my-org/my-app#semver:v1.2.3"`). + +An entry provides its credential exactly one of two ways — a literal `token`, or a `secret` reference: + +| Field | Kind | Description | +| ---------- | ---- | ------------------------------------------------------------------------------------------------------------------- | +| `registry` | npm | The registry URL or host the credential applies to. **Required** for an npm entry. | +| `scope` | npm | Optional npm `@scope` (e.g. `"@my-org"`) the entry applies to; omit to set the default registry. | +| `host` | git | The bare git host the credential applies to (e.g. `"github.com"`). **Required** for a git entry. | +| `username` | git | Optional git HTTPS username. Defaults to `x-access-token` (GitHub); GitLab uses `oauth2`, Bitbucket `x-token-auth`. | +| `token` | both | A literal auth token, **or** | +| `secret` | both | The name of an [`hdb_secret`](../security/secrets.md) row to resolve the token from. | + +A provided **`token`** is not treated as ephemeral: Harper ingests it into the encrypted [secrets store](../security/secrets.md) and references it everywhere, so package-reference deploys keep working through rollback, reboot, and new peers joining — without re-supplying the token. The token is encrypted at rest, stripped from the operation before replication and from the operations log, and only ever crosses the cluster as ciphertext. A git-host token is additionally served to git **from memory** (via a credential helper) — it is never written to a file or into a URL. Using a **`secret`** reference names an existing store row directly. Ingesting a token requires custody on the deploying node; on OSS core without custody, a literal token falls back to a transient, this-node-only credential (not persisted or replicated). + +Ingested tokens are stored under a derived name granted to the component — `deploy..` for a registry entry, `deploy..git.` for a git entry — so re-deploying with a rotated token idempotently updates the same row. + +Private npm registry: + +```json +{ + "operation": "deploy_component", + "project": "my-app", + "package": "npm:@my-org/my-app@1.2.3", + "credentials": [{ "registry": "https://registry.my-org.com", "scope": "@my-org", "token": "npm_..." }] +} +``` + +Private git repository (token resolved from an existing secret): + +```json +{ + "operation": "deploy_component", + "project": "my-app", + "package": "github:my-org/my-app#semver:v1.2.3", + "credentials": [{ "host": "github.com", "secret": "deploy.my-app.git.github_com" }] +} +``` + +:::note +`credentials` replaces the earlier `registryAuth` field (renamed while the feature was in alpha, before it grew to carry git-host credentials). `registryAuth` is now rejected with an error directing you to `credentials`. +::: The response includes a `deployment_id` that can be used to query the deployment record: @@ -724,6 +773,117 @@ Adds an SSH key (must be ed25519) for authenticating deployments from private re --- +## Secrets + +Operations for managing the encrypted [secrets store](../security/secrets.md) (`system.hdb_secret`). All secret operations are **`super_user` only**. Values are never returned or logged by any of these operations. + +Detailed documentation: [Secrets](../security/secrets.md) + +:::tip +Prefer a UI? [Harper Studio](../studio/overview.md) provides a graphical interface for creating, granting, and rotating secrets — it drives these operations for you, so you don't have to hand-craft the request bodies below. +::: + +| Operation | Description | Role Required | +| ------------------------ | -------------------------------------------------------------- | ------------- | +| `set_secret` | Creates or updates a secret and chooses its delivery tier | super_user | +| `grant_secret` | Adds a component to a scoped secret's grants (idempotent) | super_user | +| `revoke_secret` | Removes a component from a scoped secret's grants (idempotent) | super_user | +| `list_secrets` | Lists secret metadata — never envelopes or values | super_user | +| `delete_secret` | Deletes a secret row | super_user | +| `get_secrets_public_key` | Returns the cluster public key for client-side encryption | super_user | + +### `set_secret` + +Creates or updates a secret. Supply exactly one of `value` (plaintext, encrypted on ingest — requires custody on this node) or `envelope` (an `enc:v1:` ciphertext produced client-side against `get_secrets_public_key`). The delivery tier is `processEnv: true` **or** `grants` — the two are mutually exclusive. On update, tier and metadata default to the stored row, so a value rotation preserves the tier without re-specifying it. + +| Parameter | Type | Description | +| ------------ | -------- | ------------------------------------------------------------------------------- | +| `name` | string | Secret name (word characters, dots, dashes). **Required.** | +| `value` | string | Plaintext value; encrypted immediately, then discarded. Requires custody. | +| `envelope` | string | `enc:v1:` ciphertext (alternative to `value`). | +| `processEnv` | boolean | `true` delivers the secret via `process.env` (global tier). | +| `grants` | string[] | Components allowed to read the secret via the `secrets` accessor (scoped tier). | +| `metadata` | object | Optional free-form label object (not a payload store). | + +```json +{ + "operation": "set_secret", + "name": "STRIPE_KEY", + "value": "sk_live_...", + "grants": ["payments-service"] +} +``` + +Response: + +```json +{ "name": "STRIPE_KEY", "kid": "", "created": true } +``` + +### `grant_secret` / `revoke_secret` + +Add or remove a component from a scoped secret's grants list. Both are idempotent. A `processEnv` (global) secret cannot be granted — convert it with `set_secret` `processEnv: false` first. + +```json +{ "operation": "grant_secret", "name": "STRIPE_KEY", "component": "payments-service" } +``` + +Response includes the updated `grants` array and a `changed` flag (`false` when the call was a no-op). + +### `list_secrets` + +Returns metadata for every secret — **never** envelopes or values. Each entry includes `name`, `kid`, `grants`, `processEnv`, `metadata`, `unverified`, `updated_by`, timestamps, and `kid_matches_custody` (so a stale row on a cloned/rekeyed node is immediately visible). The response also carries the node's `custody_fingerprint` (`null` when no custody is held). + +```json +{ "operation": "list_secrets" } +``` + +Response: + +```json +{ + "secrets": [ + { + "name": "STRIPE_KEY", + "kid": "a1b2c3d4...", + "grants": ["payments-service"], + "processEnv": false, + "metadata": {}, + "unverified": false, + "updated_by": "admin", + "__createdtime__": 1700000000000, + "__updatedtime__": 1700000000000, + "kid_matches_custody": true + } + ], + "custody_fingerprint": "a1b2c3d4..." +} +``` + +### `delete_secret` + +Removes a secret row by `name`. Not cryptographic erasure — audit/transaction logs and backups retain the encrypted envelope. + +```json +{ "operation": "delete_secret", "name": "STRIPE_KEY" } +``` + +### `get_secrets_public_key` + +Returns the cluster secrets public key for client-side envelope encryption. Requires custody on the node. + +```json +{ "operation": "get_secrets_public_key" } +``` + +Response: + +```json +{ "public_key": "-----BEGIN PUBLIC KEY-----\n...", "fingerprint": "" } +``` + +--- + ## Replication & Clustering Operations for configuring and managing Harper cluster replication. diff --git a/reference/security/secrets.md b/reference/security/secrets.md new file mode 100644 index 00000000..2e2a0a84 --- /dev/null +++ b/reference/security/secrets.md @@ -0,0 +1,300 @@ +--- +id: secrets +title: Secrets +--- + +Harper provides an encrypted, replicated **secrets store** for supplying credentials and other sensitive configuration to your components without hardcoding them or leaving them in plaintext on disk. Secrets are held in the `system.hdb_secret` system table as ciphertext, replicate across the cluster like any other system table, and are delivered to components in one of two tiers: as `process.env` variables, or through a per-component `secrets` accessor. + +This is the production-grade alternative to committing a `.env` file. For the simpler file-based approach (including encrypted `.env` values that share this store's wire format), see [Environment Variables](../environment-variables/overview.md). + +## Concepts + +### The store + +Every secret is a named row in `system.hdb_secret`. Only ciphertext is ever stored — a plaintext value submitted to `set_secret` is encrypted immediately and the plaintext is discarded. Values are never returned by any read operation, never written to the operations log, and never travel in the replication payload as plaintext; rows reach peers as encrypted envelopes through normal system-table replication. + +Secret names may contain word characters, dots, and dashes (e.g. `STRIPE_KEY`, `deploy.my-app.git.github_com`). + +### Custody (Harper Pro) + +The private key that decrypts secrets — the **custody** — is held by a Harper Pro component. Open-source core ships no custody: + +- **With custody** (Pro): the node can encrypt on ingest (`set_secret` with a plaintext `value`), serve `get_secrets_public_key`, and decrypt secrets for delivery to components. +- **Without custody** (OSS core, or a node that does not hold the key): the node can still **store and replicate** client-encrypted envelopes, but it cannot decrypt them. A plaintext `set_secret` fails; a scoped secret a component requests is reported as `custody-unavailable`. + +A single cluster-shared keypair is distributed to every node the same way the JWT keypair is (node clone/join), so a secret encrypted once by a client can be decrypted on any node that holds custody. + +### Delivery tiers + +Each secret is delivered exactly one of two ways, decided by the row itself. The two tiers are mutually exclusive — a `process.env` secret is already global, so scoping it would be meaningless, and `set_secret` rejects a row that is both. + +| Tier | Row flag | Reaches components as | In `process.env`? | Inherited by child processes? | +| ---------- | ------------------ | ---------------------------------------- | ----------------- | ----------------------------- | +| **Global** | `processEnv: true` | `process.env.NAME` | Yes | Yes | +| **Scoped** | `grants: [...]` | `secrets.NAME` (granted components only) | No | No | + +**Global tier** secrets are materialized into the real `process.env` at startup, before components load — exactly like `.env` values, with the same semantics (a pre-existing real environment variable always wins over the store). There is no isolation between components on this tier. + +**Scoped tier** secrets never land in `process.env`. They are exposed only through the per-component accessor, so they are not inherited by child processes and are invisible to environment dumps. The `grants` list on the row is the authority for which components can see the secret; a row with neither `processEnv` nor any grant is **inert** — visible to no one — until it is granted. + +:::note +JS-level scoping is a slowdown layer, not a hard security boundary — components share a process, so OS-level isolation (containers/uids) remains the real boundary between untrusted code. Scoping keeps a secret out of `process.env` and out of ungranted components' reach; it does not sandbox a component that is determined to reach into the process. +::: + +## Managing secrets (Operations API) + +Secrets can be managed graphically in [Harper Studio](../studio/overview.md), which provides a friendly interface for creating, granting, and rotating secrets without hand-crafting operation requests. The operations below are the underlying API that Studio (and your own tooling) drives. + +All secret operations are **`super_user` only** and are documented in the [Operations Reference](../operations-api/operations.md#secrets). The core operations: + +| Operation | Purpose | +| -------------------------------- | ------------------------------------------------------- | +| `set_secret` | Create or update a secret (and choose its tier) | +| `grant_secret` / `revoke_secret` | Add or remove a component from a scoped secret's grants | +| `list_secrets` | List secret metadata (never values) | +| `delete_secret` | Remove a secret row | +| `get_secrets_public_key` | Fetch the cluster public key for client-side encryption | + +### Create a global (process.env) secret + +With custody on the node, submit the plaintext `value` and Harper encrypts it on ingest: + +```json +{ + "operation": "set_secret", + "name": "DATABASE_URL", + "value": "postgres://user:pass@host/db", + "processEnv": true +} +``` + +Every component now sees `process.env.DATABASE_URL`. + +### Create a scoped secret and grant it + +```json +{ + "operation": "set_secret", + "name": "STRIPE_KEY", + "value": "sk_live_...", + "grants": ["payments-service"] +} +``` + +`grants` may be set at creation (above) or managed separately: + +```json +{ "operation": "grant_secret", "name": "STRIPE_KEY", "component": "payments-service" } +``` + +```json +{ "operation": "revoke_secret", "name": "STRIPE_KEY", "component": "payments-service" } +``` + +Granting a not-yet-deployed component is legal — grants may precede the deploy. + +## Consuming secrets in a component + +### Declare what you expect + +A component declares the environment it needs in an `env:` block in its `config.yaml`. A declaration is a **request, not a grant** — it cannot widen access to a scoped secret; the `grants` list on the row is the only authority for that. + +```yaml +# config.yaml +env: + NODE_ENV: production # string value = an inline literal written to process.env + DATABASE_URL: { required: true, description: Primary database } # satisfied from the store or env + SENTRY_DSN: { required: false } # optional +``` + +- A **string** value is an inline literal, written directly into `process.env` (a convenience for non-secret config; do not put real secrets here — they are stored in plaintext in `config.yaml`, which is typically committed to version control). +- An **object** value is a declaration satisfied from `process.env` (a global-tier secret, a literal, or a real environment variable) — it does not by itself expose a scoped secret. + +A `required: true` declaration that cannot be satisfied stops **that component** from loading (the instance keeps running). The failure reason is one of: + +- `missing` — no matching row and no environment variable. +- `ungranted` — a scoped row exists but this component is not in its grants. +- `custody-unavailable` — a row exists but cannot be decrypted on this node (no custody). + +### Read scoped secrets with the `secrets` accessor + +Scoped secrets are read through the process-wide `secrets` export — a read-only, name→value map of the secrets granted to the current component (plus any `process.env`-resolved values it declared): + +```js +import { secrets } from 'harper'; + +const stripe = new Stripe(secrets.STRIPE_KEY); +``` + +**The accessor is live.** On the scoped tier a property read (`secrets.STRIPE_KEY`) always returns the latest stored value — a rotation is reflected on the next read, no reload required. So most components need nothing more than the accessor: read the secret **where you use it**, and every request sees the current value. Reading inside a resource handler is the common case: + +```js +import { Resource, secrets } from 'harper'; + +export class Report extends Resource { + async get() { + // Read at call time, so each request uses the current token — even after a rotation. + const response = await fetch('https://api.example.com/report', { + headers: { authorization: `Bearer ${secrets.API_TOKEN}` }, + }); + return response.json(); + } +} +``` + +The one thing that is **not** live is a **destructure**: `const { STRIPE_KEY } = secrets` — or any assignment that copies the value into your own variable — takes a **point-in-time snapshot** and won't observe a later rotation. That's fine for a value read once and used as-is, and it's the idiom to use when the read must happen at module load (see the loader note below): + +```js +import { secrets } from 'harper'; + +const { STRIPE_KEY, WEBHOOK_SECRET } = secrets; +``` + +The `secrets` object is a read-only, live view of the secrets granted to the component; its secret names are enumerable (`Object.keys(secrets)`, spread), while the `subscribe` method below is a non-enumerable member so it never leaks into a spread of values. Global-tier secrets are read from `process.env` as usual and do not need the accessor. + +:::note +Under the VM/compartment component loaders (the default) the `harper` module is per-scope, so `import { secrets } from 'harper'` is a view bound to your component — you can read `secrets.NAME` live from anywhere in it, including inside request handlers. Under the native loader the `harper` package is a process-wide singleton that resolves the calling component from the component-load context, so a read **outside** component load fails loudly rather than guessing which component is asking; there, read at module top level during load (the destructure above — a snapshot) or use `secrets.subscribe()` to track changes. The module-top-level destructure is exact in all modes. +::: + +### React to rotations with `secrets.subscribe()` + +Reading `secrets.NAME` per use (above) already picks up rotations, so reach for a subscription only when you build something **from** a secret and keep it around — an API client, a connection pool, a cached signer — and need to rebuild that object when the secret changes. + +`secrets.subscribe(name)` returns an async iterable that yields the secret's **current value immediately**, then a new value on **every change** — a grant, a rotation (`set_secret`), a revoke, or a delete. It lets a component hot-swap a rotated secret without a restart. + +The iterator stays open for the life of the component, so a top-level `for await` would block module load forever. Instead, use the current value right away, then subscribe in a **background task** so module load is never blocked and the rest of the component keeps initializing: + +```js +import { secrets } from 'harper'; + +// Ready to serve immediately with the current value... +let currentKey = secrets.STRIPE_KEY; +let stripe = new Stripe(currentKey); + +// ...then hot-swap on every rotation, without blocking module load. +(async () => { + try { + for await (const key of secrets.subscribe('STRIPE_KEY')) { + if (key === currentKey) continue; // the first yield is the value we already have + currentKey = key; + stripe = new Stripe(currentKey); + } + } catch (error) { + // Log and keep serving the last client; it stays valid until the next reload. + console.error('secret subscription ended for STRIPE_KEY:', error); + } +})(); +``` + +The first value `subscribe` yields is the secret's **current** value — the same one read synchronously above — so the guard skips a redundant rebuild on startup and only rebuilds the client when the key actually rotates. + +Authority is re-evaluated on **every** event through the same rules as the read accessor: + +- A **revoke** or **delete** yields `undefined` (no plaintext is retained), while the stream stays **open**. +- A later **re-grant** or **re-add** resumes delivery on the same iterator — no restart, no re-subscribe. + +`subscribe` is a reserved name: it can never be a secret's name, and never resolves to a secret value. + +### How each tier sees a change + +The two tiers observe changes differently: + +| Read path | Scoped tier (`grants`) | Global tier (`processEnv`) | +| --------------------------- | ---------------------------------------------------- | ------------------------------------------------- | +| `secrets.NAME` accessor | **Live** — reflects the latest value on a fresh read | Current value at load; reload-only | +| `secrets.subscribe('NAME')` | **Live** — streams every change | Current value only; reload-only | +| `process.env.NAME` | n/a | Reload-only — never re-mutated under running code | + +**Scoped-tier** consumers see grants, rotations, revokes, and late-arriving custody take effect live, through the accessor or a subscription. + +**Global-tier** secrets are materialized into `process.env` once at startup, before components load, and are deliberately **not** re-materialized under running code: child processes inherit `process.env`, and the "a pre-existing real environment variable always wins" precedence must hold. A change to a global secret — or custody that only came up after boot — heals on the next **restart or component reload**, when the store is re-read. + +## Client-side encryption (encrypt before it leaves the client) + +For the strongest posture, a client can encrypt a secret value **before** sending it, so plaintext never reaches the operations API at all — not even on the node that stores it. This is also how a node **without custody** can accept a secret: it stores the opaque envelope verbatim. + +The flow: + +1. **Fetch the public key** with `get_secrets_public_key` (requires custody somewhere to answer). Cache it by `fingerprint`: + + ```json + { "operation": "get_secrets_public_key" } + ``` + + ```json + { "public_key": "-----BEGIN PUBLIC KEY-----\n...", "fingerprint": "" } + ``` + +2. **Encrypt the value** into an `enc:v1:` envelope (see below), using the `fingerprint` as the `kid`. + +3. **Submit the envelope** instead of a plaintext `value`: + + ```json + { + "operation": "set_secret", + "name": "STRIPE_KEY", + "envelope": "enc:v1:", + "grants": ["payments-service"] + } + ``` + +The server derives `kid` from the sealed envelope (a separate client-supplied `kid` field is never trusted) and, if it holds custody, verifies the `kid` matches this cluster's key; a mismatch is rejected with the current fingerprint. Without custody the row is accepted but flagged `unverified: true` in `list_secrets` so a bad envelope is visible rather than silently failing at consumption time. + +### Envelope format + +An encrypted value is the literal prefix `enc:v1:` followed by the base64url encoding of a JSON envelope. Hybrid encryption is used — AES-256-GCM encrypts the value, RSA-OAEP (SHA-256) wraps the AES key — because the RSA key is too small to directly encrypt multi-line secrets such as PEM keys: + +``` +enc:v1: +``` + +```jsonc +{ + "kid": "", // which key encrypted this + "k": "", + "iv": "", + "ct": "", + "tag": "", +} +``` + +`kid` lets multiple keypairs coexist during rotation: the decryptor selects the matching private key, or rejects the value if it holds no key for that `kid`. + +The same `enc:v1:` envelope format is used for encrypted `.env` values, so a value encrypted once can be used with either the secrets store or `loadEnv`. + +### Reference client (Node.js) + +```js +import { randomBytes, publicEncrypt, createCipheriv, constants } from 'node:crypto'; + +function encryptSecret(plaintext, publicKeyPem, kid) { + const aesKey = randomBytes(32); + const iv = randomBytes(12); + const cipher = createCipheriv('aes-256-gcm', aesKey, iv); + const ct = Buffer.concat([cipher.update(plaintext, 'utf8'), cipher.final()]); + const tag = cipher.getAuthTag(); + const k = publicEncrypt({ key: publicKeyPem, padding: constants.RSA_PKCS1_OAEP_PADDING, oaepHash: 'sha256' }, aesKey); + const envelope = { + kid, // the `fingerprint` from get_secrets_public_key + k: k.toString('base64'), + iv: iv.toString('base64'), + ct: ct.toString('base64'), + tag: tag.toString('base64'), + }; + return 'enc:v1:' + Buffer.from(JSON.stringify(envelope)).toString('base64url'); +} +``` + +## Private-source deploy credentials + +`deploy_component` accepts a `credentials` array so a component installed from a private **npm registry** or private **git repository** can authenticate. A provided token is ingested into the secrets store (as a reference, encrypted) rather than travelling in the operation body, persisting as a plaintext `.npmrc`, or being written to disk for git — so package-reference deploys survive rollback, reboot, and new peers joining. Ingested tokens are stored under a derived name (`deploy..` or `deploy..git.`) granted to the component. See [`deploy_component`](../operations-api/operations.md#deploy_component). + +## Threat model + +**Protects against:** theft of on-disk config/`.env` files, the editor/operations read surface, secrets appearing in operations logs and replication payloads, and an operator observing traffic at the TLS-terminating layer. Client-side encryption additionally keeps plaintext off the operations API entirely. + +**Does not protect against:** a fully compromised running node — a node that holds custody necessarily holds the private key and the decrypted values in memory. This is defense-in-depth for accidental and at-rest exposure, not protection from a compromised host. OS-level isolation remains the boundary between untrusted components. + +:::note +`delete_secret` removes the row but is **not** cryptographic erasure — audit logs, transaction logs, and backups retain the encrypted envelope. +::: diff --git a/sidebarsReference.ts b/sidebarsReference.ts index 63957800..d58b1b17 100644 --- a/sidebarsReference.ts +++ b/sidebarsReference.ts @@ -325,6 +325,11 @@ const sidebars: SidebarsConfig = { id: 'security/impersonation', label: 'Impersonation', }, + { + type: 'doc', + id: 'security/secrets', + label: 'Secrets', + }, ], }, {