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Bluetooth: Classic: SMP: Store derived LK if SMP_FLAG_BOND is set

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When deriving the new LK, remove the old LK if it exists.

Store the derived LK if the flag `SMP_FLAG_BOND` of LE SMP is set.

Signed-off-by: Lyle Zhu <lyle.zhu@nxp.com>
This commit is contained in:
Lyle Zhu 2025-03-27 15:09:49 +08:00 • committed by Benjamin Cabé
commit 3bf18870f9
1 changed files with 11 additions and 0 deletions
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11
subsys/bluetooth/host/smp.c
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@ -810,6 +810,12 @@ static void sc_derive_link_key(struct bt_smp *smp)
return;
}
/* Remove the bonding information */
link_key = bt_keys_find_link_key(&conn->le.dst.a);
if (link_key != NULL) {
bt_keys_link_key_clear(link_key);
}
/*
* At this point remote device identity is known so we can use
* destination address here
@ -855,6 +861,11 @@ static void sc_derive_link_key(struct bt_smp *smp)
} else {
link_key->flags &= ~BT_LINK_KEY_AUTHENTICATED;
}
if (atomic_test_bit(smp->flags, SMP_FLAG_BOND)) {
/* Store the link key */
bt_keys_link_key_store(link_key);
}
}
static void smp_br_reset(struct bt_smp_br *smp)