Files
codex/codex-rs/app-server-protocol/schema/json/v2/DeviceKeyPublicParams.json
Ruslan Nigmatullin 48f82ca7c5 app-server: define device key v2 protocol (#18428)
## Why

Clients need a stable app-server protocol surface for enrolling a local
device key, retrieving its public key, and producing a device-bound
proof.

The protocol reports `protectionClass` explicitly so clients can
distinguish hardware-backed keys from an explicitly allowed OS-protected
fallback. Signing uses a tagged `DeviceKeySignPayload` enum rather than
arbitrary bytes so each signed statement is auditable at the API
boundary.

## What changed

- Added v2 JSON-RPC methods for `device/key/create`,
`device/key/public`, and `device/key/sign`.
- Added request/response types for device-key metadata, SPKI public
keys, protection classes, and ECDSA signatures.
- Added `DeviceKeyProtectionPolicy` with hardware-only default behavior
and an explicit `allow_os_protected_nonextractable` option.
- Added the initial `remoteControlClientConnection` signing payload
variant.
- Regenerated JSON Schema and TypeScript fixtures for app-server
clients.

## Stack

This is PR 1 of 4 in the device-key app-server stack.

## Validation

- `just write-app-server-schema`
- `cargo test -p codex-app-server-protocol`
2026-04-21 10:08:42 -07:00

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JSON
Generated

{
"$schema": "http://json-schema.org/draft-07/schema#",
"description": "Fetch a controller-local device key public key by id.",
"properties": {
"keyId": {
"type": "string"
}
},
"required": [
"keyId"
],
"title": "DeviceKeyPublicParams",
"type": "object"
}