# secrets/

SOPS-encrypted YAML files. The plaintext lives only in transit and in the
operator's head — committed files are always ciphertext.

## Conventions

- One file per logical grouping (e.g. `gitea-tokens.yaml`, `webhook-hmacs.yaml`,
  `api-keys.yaml`).
- Recipients are declared in `../.sops.yaml` by path-regex, not per-file.
- The plaintext schema inside each file is free-form YAML; the consumer code
  decides what it expects (e.g. `gitea-tokens.yaml` contains
  `{"<host>": "ghp_xxx"}`).

## How to add a secret

```bash
# 1. Decide which clients should be able to decrypt it; edit ../.sops.yaml to
#    list their age public keys for the new path_regex.
# 2. Create the plaintext, encrypt in place:
sops -e --in-place secrets/my-thing.yaml
# 3. Commit + push. The 5-min sync propagates to every recipient.
```

## How to consume a secret

```bash
# On any client that's a recipient:
homelab secret my-thing               # prints plaintext
# Or programmatically:
sops -d /opt/homelab-context/secrets/my-thing.yaml
```

The `mcp` tool `list_my_secrets(caller_pubkey)` returns the names of secrets
the caller can decrypt. The MCP server never reads plaintext — decryption
stays client-side.

## Granting / revoking access

To grant a new recipient: edit `../.sops.yaml` to add their age pubkey, then
re-key every affected file:

```bash
sops updatekeys -y secrets/my-thing.yaml
```

To revoke: remove the recipient from `../.sops.yaml` and `sops updatekeys` —
but remember this only protects future ciphertext. Past plaintext the client
already decrypted is gone from your control. Rotate the underlying credential
if compromise is suspected.

`homelab client remove <name>` does the recipient removal + `updatekeys` for
you, and prints the rotation checklist as a follow-up.

## hello.yaml — bootstrap decrypt test

`secrets/hello.yaml` is encrypted to every enrolled client. Used by Phase 3a
verification to confirm the end-to-end decrypt path works on a freshly-
bootstrapped machine. Content is intentionally trivial:

```yaml
greeting: hello from the homelab
```
