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-rw-r--r--packages/meshbay-hub/src/meshbay_hub/auth.py8
1 files changed, 7 insertions, 1 deletions
diff --git a/packages/meshbay-hub/src/meshbay_hub/auth.py b/packages/meshbay-hub/src/meshbay_hub/auth.py
index e182ba0..0d0fd95 100644
--- a/packages/meshbay-hub/src/meshbay_hub/auth.py
+++ b/packages/meshbay-hub/src/meshbay_hub/auth.py
@@ -241,7 +241,7 @@ def issue_access_token(
def issue_mnp_token(user_id: str, groups: list[str] | None = None,
- ttl: int = 900) -> str:
+ node_pk: str | None = None, ttl: int = 900) -> str:
"""Issue the short-lived token a member presents to a node in the handshake.
`aud=MNP_AUD`, so it is accepted by `authorize_token` and refused by the hub
@@ -249,6 +249,11 @@ def issue_mnp_token(user_id: str, groups: list[str] | None = None,
lifetime does not interrupt a long transfer or a film already playing; only a
fresh connection or a reconnect needs a fresh one. It carries the same
`sub`/`groups`/`jti` the node authorises and denylists on.
+
+ `node` names the node this token is for (its base64 Ed25519 key), so it
+ cannot be replayed to another node the member also belongs to — the node
+ checks it in `authorize_token` (E10). The client knows the target node's key
+ before it connects and asks for a token bound to it.
"""
if _hub_sk_pem is None:
raise RuntimeError("Hub keypair not loaded")
@@ -260,6 +265,7 @@ def issue_mnp_token(user_id: str, groups: list[str] | None = None,
"iat": now,
"exp": now + ttl,
"groups": groups or [],
+ "node": node_pk or "",
"scope": "user",
"aud": MNP_AUD,
}