# KNELSecretsManager — Architecture

Status: production. Ruling chain: ADR-002 (containerized CLI) -> ADR-003
(pure-Go `smcli`, Rust `bw` retired). Founder directives: #829/#832.

## Components

```mermaid
flowchart LR
    V["Vaultwarden vault - pwvault.turnsys.com"]
    C["smcli container - ukrrs-secretsmgr-cli"]
    S1["TSGCOO entry - data2 TSGCOO bin sm"]
    S2["lane crossover - tools sm"]
    W1["mred-vp - Redmine identity"]
    W2["ci-green.sh - Gitea admin"]
    W3["redmine-sweep.sh"]
    B["KNELBMS on-box secrets.yaml"]
    K["pfv-k8s secrets - glpi-creds, flux PAT"]
    R["nightly timers - pve backup, glpi reconcile"]
    S1 --> C
    S2 --> C
    W1 --> C
    W2 --> C
    W3 --> C
    C -->|HTTPS login sync CRUD| V
    C -.-> B
    C -.-> K
    C -.-> R
```

## Auth + unlock sequence

```mermaid
sequenceDiagram
    participant U as Consumer
    participant S as smcli
    participant V as Vault
    U->>S: login with email password TOTP seed
    S->>V: POST prelogin - get KDF params
    V-->>S: PBKDF2 iterations or Argon2id
    S->>S: derive master key and auth hash
    S->>V: POST identity connect token
    V-->>S: 400 - two factor required
    S->>S: compute TOTP code - RFC 6238
    S->>V: token request plus twoFactorToken
    V-->>S: access token and encrypted keys
    S->>V: GET sync
    V-->>S: profile key - encrypted
    S->>S: stretch master key - decrypt user key
    S->>S: write state file 0600
```

Item payloads are type-2 encStrings (AES-256-CBC + HMAC-SHA256, 32B enc +
32B mac keys) encrypted/decrypted locally; the vault never sees plaintext.

## Consumer pattern

```bash
# env-style consumers (export lines; URI/USERNAME/PASSWORD + original keys)
eval "$(docker exec -i ukrrs-secretsmgr-cli smcli env creds/<name>)"
# surgical single-field rotation update
docker exec -i ukrrs-secretsmgr-cli smcli setfield creds/<name> <KEY> <newvalue>
```

Items are LOGIN type: username + password/API-key as first-class fields,
service URLs as URIs, remaining keys as named custom fields (hidden where
secret). Original env key names are preserved as the custom-field names.

## Rotation program (#829)

All pre-migration material is presumed BURNED (plaintext on disk + LLM
exposure). Waves, each item = rotate at source -> `setfield` in vault ->
rewire consumers to `sm env` -> validate (guard rule: never write the vault
from a failed rotation):

1. Tooling tokens (librenms*, wazuh DONE, grafana*, gvm, technitium, phpipam,
   rancher-sectest, beszel, pihole, PMG pair, PBS tokens)
2. Agent identities (gitea agent-stack, vptechops gitea/redmine)
3. Platform (cloudron API token, kuma, discourse)
4. Deep-wired (flux PAT + gitea runner + HA on-box secrets.yaml + k8s
   secrets + PVE upsagent tokens)

\* item-specific notes: librenms — token-mint API route absent on this
install (UI/DB path); grafana — SSO-managed, local admin parked (instance
password policy blocks CLI reset).

## KNELBMS integration

See [integration-knelbms.md](integration-knelbms.md). Short form: the BMS
deploy pipeline (KNELBMS repo, packages/deploy_pipeline.yaml) consumes
`gitea_auth_header` + `kuma_push_url` + `pve_*_api_token` from on-box
`/config/secrets.yaml`; the vault is the source of record and rotations
push to the box through the CR-gated provisioning path.