AetherCloud Gateway enrollment

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Gateway enrollment is an installation-time identity Claim. The implemented foundation generates an Ed25519 key, persists pending identity state, calls a strict HTTP Claim endpoint, and records the matching Claim-server acknowledgement.

claimed is not credential-active, cloudlink-connected, or online. AetherCloud production Claim deployment, credential issuance, and production CloudLink composition remain planned.

Enroll interactively

Use the hidden terminal prompt so the Enrollment Token is absent from process arguments and shell history:

aether cloud enroll \
  --cloud-url https://api.aetheriot.dev \
  --tenant-id 11111111-1111-4111-8111-111111111111 \
  --project-id 22222222-2222-4222-8222-222222222222 \
  --gateway-id 33333333-3333-4333-8333-333333333333

For an explicitly non-interactive secret provider, stream exactly one bounded token line to stdin:

secret-provider-command | aether cloud enroll \
  --cloud-url https://api.aetheriot.dev \
  --tenant-id 11111111-1111-4111-8111-111111111111 \
  --project-id 22222222-2222-4222-8222-222222222222 \
  --gateway-id 33333333-3333-4333-8333-333333333333 \
  --token-stdin

There is deliberately no --token option. Do not place the token in an environment variable, configuration file, command argument, log, or agent transcript.

On success, human output ends with:

Identity claimed; CloudLink credentials not yet activated

For stable non-secret output, put the global JSON flag before the command:

aether --json cloud enroll \
  --cloud-url https://api.aetheriot.dev \
  --tenant-id 11111111-1111-4111-8111-111111111111 \
  --project-id 22222222-2222-4222-8222-222222222222 \
  --gateway-id 33333333-3333-4333-8333-333333333333

The data object contains only:

cloud_url
tenant_id
project_id
gateway_id
public_key_fingerprint
enrollment_state
claimed_revision

It never contains the Enrollment Token, private key, Authorization material, or the complete public key.

Read local status

Status is a local read and does not contact AetherCloud or a Broker:

aether cloud status
aether --json cloud status

The possible enrollment states are:

State	Meaning
`unconfigured`	No local Gateway identity exists
`key-generated`	The private key and immutable scope are durable
`claim-pending`	The stable Claim idempotency key is durable; retry is safe
`claimed`	The configured Claim server acknowledged the public-key binding and revision

MQTT connection state is intentionally absent.

Retry and conflicts

If the HTTP result is unknown, run the same command again with a valid Enrollment Token. AetherEdge reuses the durable private key, public key, fingerprint, and Idempotency-Key. It does not create a second identity.

Repeating an already-claimed command for the exact same Cloud, Tenant, Project, and Gateway is a successful local no-op. A different immutable scope conflicts and fails closed. The CLI provides no force-overwrite option.

Development loopback server

Production enrollment accepts HTTPS only. A local test server may use HTTP only with an explicit flag and only on exactly localhost or 127.0.0.1:

aether cloud enroll \
  --cloud-url http://127.0.0.1:8080 \
  --tenant-id 11111111-1111-4111-8111-111111111111 \
  --project-id 22222222-2222-4222-8222-222222222222 \
  --gateway-id 33333333-3333-4333-8333-333333333333 \
  --allow-insecure-localhost

The flag does not permit another HTTP host, an IPv6 alias, a URL path, user information, query, fragment, or redirect.

Local storage

The identity is stored under:

<data-directory>/uplink/identity

The installed data directory is selected by the normal CLI path resolution; --db-path can select an isolated data directory for development and tests. The identity directory is 0700; its private-key and state files are 0600, as is the adjacent enrollment lock in the parent directory. Initial creation atomically renames a complete, fsynced 0700 staging directory; later state changes fsync and atomically replace the state file. The directory chain and expected identity paths reject symbolic links, unsafe permissions, non-regular files, hard links, malformed state, and identity replacement. Unrelated extra entries are not presented as validated identity material.

This ordinary-file implementation is the current Linux baseline only. It does not provide TPM, Secure Enclave, system-keyring, HSM, or hardware-level key protection.

HTTP Claim contract

Endpoint and headers:

POST {cloudOrigin}/api/v1/fleet/enrollment-claims:claim
Content-Type: application/json
Idempotency-Key: <stable UUID>

Request:

{
  "schema": "aether.cloud.gateway-enrollment-claim.v1",
  "tenantId": "11111111-1111-4111-8111-111111111111",
  "projectId": "22222222-2222-4222-8222-222222222222",
  "gatewayId": "33333333-3333-4333-8333-333333333333",
  "enrollmentToken": "<opaque token>",
  "credentialRequest": {
    "algorithm": "ed25519",
    "publicKey": "<unpadded base64url raw 32-byte public key>",
    "fingerprint": "<64 lowercase hex SHA-256>"
  }
}

Accepted success response:

{
  "schema": "aether.cloud.gateway-enrollment-claimed.v1",
  "gatewayId": "33333333-3333-4333-8333-333333333333",
  "state": "claimed",
  "revision": 1
}

The adapter rejects unknown fields or schemas, identity mismatch, any state other than claimed, zero or non-JSON-safe revisions, non-JSON success responses, oversized bodies, redirects, timeouts, and HTTPS downgrade. Remote response bodies are not copied into errors.

The response contains no invented CloudLink credential bundle. See Gateway identity recovery for the ownership and recovery boundaries.