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| author |   Łukasz Rymanowski <lukasz.rymanowski@codecoup.pl> | 2020-05-13 10:18:53 +0200 |
|---|---|---|
| committer |   Marcel Holtmann <marcel@holtmann.org> | 2020-05-18 09:58:53 +0200 |
| commit | 49c06c9eb14ba61725c1c82e5107f4e4bd6c1886 (patch) | |
| tree | 7ba0fcd31746a2d28e722142632a13367292e3af /net | |
| parent | Bluetooth: L2CAP: Replace zero-length array with flexible-array (diff) | |
| download | linux-dev-49c06c9eb14ba61725c1c82e5107f4e4bd6c1886.tar.xz linux-dev-49c06c9eb14ba61725c1c82e5107f4e4bd6c1886.zip | |
Bluetooth: Fix for GAP/SEC/SEM/BI-10-C
Security Mode 1 level 4, force us to use have key size 16 octects long.
This patch adds check for that.
This is required for the qualification test GAP/SEC/SEM/BI-10-C
Logs from test when ATT is configured with sec level BT_SECURITY_FIPS
< ACL Data TX: Handle 3585 flags 0x00 dlen 11 #28 [hci0] 3.785965
SMP: Pairing Request (0x01) len 6
IO capability: DisplayYesNo (0x01)
OOB data: Authentication data not present (0x00)
Authentication requirement: Bonding, MITM, SC, No Keypresses (0x0d)
Max encryption key size: 16
Initiator key distribution: EncKey Sign (0x05)
Responder key distribution: EncKey IdKey Sign (0x07)
> ACL Data RX: Handle 3585 flags 0x02 dlen 11 #35 [hci0] 3.883020
SMP: Pairing Response (0x02) len 6
IO capability: DisplayYesNo (0x01)
OOB data: Authentication data not present (0x00)
Authentication requirement: Bonding, MITM, SC, No Keypresses (0x0d)
Max encryption key size: 7
Initiator key distribution: EncKey Sign (0x05)
Responder key distribution: EncKey IdKey Sign (0x07)
< ACL Data TX: Handle 3585 flags 0x00 dlen 6 #36 [hci0] 3.883136
SMP: Pairing Failed (0x05) len 1
Reason: Encryption key size (0x06)
Signed-off-by: Łukasz Rymanowski <lukasz.rymanowski@codecoup.pl>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'net')
| -rw-r--r-- | net/bluetooth/smp.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/net/bluetooth/smp.c b/net/bluetooth/smp.c index 5510017cf9ff..6fd9ddb2d85c 100644 --- a/net/bluetooth/smp.c +++ b/net/bluetooth/smp.c @@ -730,6 +730,10 @@ static u8 check_enc_key_size(struct l2cap_conn *conn, __u8 max_key_size) struct hci_dev *hdev = conn->hcon->hdev; struct smp_chan *smp = chan->data; + if (conn->hcon->pending_sec_level == BT_SECURITY_FIPS && + max_key_size != SMP_MAX_ENC_KEY_SIZE) + return SMP_ENC_KEY_SIZE; + if (max_key_size > hdev->le_max_key_size || max_key_size < SMP_MIN_ENC_KEY_SIZE) return SMP_ENC_KEY_SIZE; |