Mercurial > prosody-modules
view mod_sasl2_fast/README.md @ 5193:2bb29ece216b
mod_http_oauth2: Implement stateless dynamic client registration
Replaces previous explicit registration that required either the
additional module mod_adhoc_oauth2_client or manually editing the
database. That method was enough to have something to test with, but
would not probably not scale easily.
Dynamic client registration allows creating clients on the fly, which
may be even easier in theory.
In order to not allow basically unauthenticated writes to the database,
we implement a stateless model here.
per_host_key := HMAC(config -> oauth2_registration_key, hostname)
client_id := JWT { client metadata } signed with per_host_key
client_secret := HMAC(per_host_key, client_id)
This should ensure everything we need to know is part of the client_id,
allowing redirects etc to be validated, and the client_secret can be
validated with only the client_id and the per_host_key.
A nonce injected into the client_id JWT should ensure nobody can submit
the same client metadata and retrieve the same client_secret
| author | Kim Alvefur <zash@zash.se> |
|---|---|
| date | Fri, 03 Mar 2023 21:14:19 +0100 |
| parents | 745c7f4cca40 |
| children | 70fa3f8de249 |
line wrap: on
line source
--- labels: - Stage-Beta summary: "Fast Authentication Streamlining Tokens" rockspec: dependencies: - mod_sasl2 --- This module implements a mechanism via which clients can exchange a password for a secure token, improving security and streamlining future reconnections. At the time of writing, the XEP that describes the FAST protocol is still working its way through the XSF standards process. You can [view the FAST XEP proposal here](https://xmpp.org/extensions/inbox/xep-fast.html). This module depends on [mod_sasl2]. ## Configuration | Name | Description | Default | |---------------------------|--------------------------------------------------------|-----------------------| | sasl2_fast_token_ttl | Default token expiry (seconds) | `86400*21` (21 days) | | sasl2_fast_token_min_ttl | Time before tokens are eligible for rotation (seconds) | `86400` (1 day) | The `sasl2_fast_token_ttl` option determines the length of time a client can remain disconnected before being "logged out" and needing to authenticate with a password. Clients must perform at least one FAST authentication within this period to remain active. The `sasl2_fast_token_min_ttl` option defines how long before a token will be rotated by the server. By default a token is rotated if it is older than 24 hours. This value should be less than `sasl2_fast_token_ttl` to prevent clients being logged out unexpectedly.