1 files changed, 15 insertions, 0 deletions
diff --git a/packages/meshbay-node/src/meshbay_node/bundle_store.py b/packages/meshbay-node/src/meshbay_node/bundle_store.py
index e7c6981..4cf3236 100644
--- a/packages/meshbay-node/src/meshbay_node/bundle_store.py
+++ b/packages/meshbay-node/src/meshbay_node/bundle_store.py
@@ -99,6 +99,21 @@ class BundleStore:
             row = await cursor.fetchone()
             return row[0] if row else None
 
+    async def delete_keypair(self, user_id: str) -> bool:
+        """
+        Drop someone's keypair bundle at their own request.
+
+        Backing keys up here is what lets a second browser recover them with the
+        password — and it is also what puts a PBKDF2-protected blob on every node
+        whose group they join (finding C4). Someone who does not need the first
+        should be able to withdraw the second, and not merely stop adding to it.
+        """
+        assert self._db
+        cur = await self._db.execute(
+            "DELETE FROM keypair_bundles WHERE user_id = ?", (user_id,))
+        await self._db.commit()
+        return cur.rowcount > 0
+
     async def close(self) -> None:
         if self._db:
             await self._db.close()