Hi Marcel,
Thank you for your reply. We are using the 4.1.x kernel as our group has pe=
rformed validation work on it and achieved 'Gold release' standard for our =
customers.
I have attached my logs during the LE pairing process at the end of this em=
ail. There are two logs namely master and slave device. Note that the logs =
I provided is for secure connections on.
The log I sent previously was ford secure connections turned off. Nonethele=
ss, the LE pairing fails on both settings i.e. when secured connections is =
turned on and when secured connections is turned off.
Also, I've realized that my title was wrong previously. I've updated it to =
reflect 0x0a instead of 0x17.
> Hi Joshua,
>=20
> > I am seeing an error during the LE pairing process which makes the pair=
ing to
> fail. I have two DUTs which uses the Marvell 88W8897.
> > Here are my BT settings for both master and slave:
> >
> > Master:
> > $ btmgmt info
> > current settings: powered connectable discoverable bondable ssp br/edr =
le
> secure-conn
> >
> > Slave:
> > $ btmgmt info
> > Current settings: powered connectable bondable le advertising secure-co=
nn
> >
> > When I initiate the pairing process from the master, I observed the mes=
sage:
> > "Bluetooth: hci0 unexpected SMP command 0x0a from 74:c6:3b:ab:68:ea"
> >
> > Where 74:c6:3b:ab:68:ea is the address of the slave device.
> >
> > In the btmon log of the master device, it is observed that after the Sl=
ave device
> has transmitted the keys, the Master does not transmit it. Hence, the Sla=
ve is not
> receiving the keys and thus disconnects the link and pairing is failed.
> >
> >> ACL Data RX: Handle 128 flags 0x02 dlen 21 =
[hci0]
> 124.801098
> > SMP: Encryption Information (0x06) len 16
> > Long term key: 9ac691e96e85e82ca68f4b6d2abec80f
> >> HCI Event: Encryption Change (0x08) plen 4 =
[hci0]
> 124.801261
> > Status: Success (0x00)
> > Handle: 128
> > Encryption: Enabled with AES-CCM (0x01)
> >> ACL Data RX: Handle 128 flags 0x02 dlen 15 =
[hci0]
> 124.812761
> > SMP: Master Identification (0x07) len 10
> > EDIV: 0xea3f
> > Rand: 0x806e542a78f55d7c
> >> ACL Data RX: Handle 128 flags 0x02 dlen 21 =
[hci0]
> 124.812782
> > SMP: Signing Information (0x0a) len 16
> > Signature key: 4451b8ae0eff90f0a47fb96be53479fb
> >> HCI Event: Disconnect Complete (0x05) plen 4 =
[hci0]
> 154.839591
> > Status: Success (0x00)
> > Handle: 128
> > Reason: Remote User Terminated Connection (0x13)
> >
> > =3D> At this point, Master should start sending LTK to slave, but Maste=
r doesn't
> send the LTK so Slave disconnects the link and pairing is failed.
> >
> > What could possibly cause the master to not send the LTK? My kernel ver=
sion
> is v4.1.27 and bluez stack is v5.40. I would appreciate advice on this.
>=20
> if this is LE Secure Connections, then the LTK is no longer distributed. =
It is being
> calculated from ECDH. Please include the complete SMP exchanges. Only the=
n
> we can see what is going on.
>=20
> Also keep in mind that 4.1.x kernels are actually rather old. The latest =
one is
> 4.10.x and if there is a bug, you should verify that it also happens with=
the latest
> kernel.
>=20
> Regards
>=20
> Marcel
btmon log of master device:
< HCI Command: LE Create Connection (0x08|0x000d) plen 25 =
[hci0] 752.498799
Scan interval: 60.000 msec (0x0060)
Scan window: 30.000 msec (0x0030)
Filter policy: White list is not used (0x00)
Peer address type: Public (0x00)
Peer address: 74:C6:3B:AB:68:EA (OUI 74-C6-3B)
Own address type: Public (0x00)
Min connection interval: 50.00 msec (0x0028)
Max connection interval: 70.00 msec (0x0038)
Connection latency: 0x0000
Supervision timeout: 420 msec (0x002a)
Min connection length: 0.000 msec (0x0000)
Max connection length: 0.000 msec (0x0000)
> HCI Event: Command Status (0x0f) plen 4 =
[hci0] 752.505320
LE Create Connection (0x08|0x000d) ncmd 1
Status: Success (0x00)
> HCI Event: LE Meta Event (0x3e) plen 19 =
[hci0] 753.061210
LE Connection Complete (0x01)
Status: Success (0x00)
Handle: 128
Role: Master (0x00)
Peer address type: Public (0x00)
Peer address: 74:C6:3B:AB:68:EA (OUI 74-C6-3B)
Connection interval: 67.50 msec (0x0036)
Connection latency: 0.00 msec (0x0000)
Supervision timeout: 420 msec (0x002a)
Master clock accuracy: 0x01
@ Device Connected: 74:C6:3B:AB:68:EA (1) flags 0x0000
< HCI Command: LE Read Remote Used Features (0x08|0x0016) plen 2 =
[hci0] 753.063118
Handle: 128
> HCI Event: Command Status (0x0f) plen 4 =
[hci0] 753.068964
LE Read Remote Used Features (0x08|0x0016) ncmd 1
Status: Success (0x00)
> HCI Event: LE Meta Event (0x3e) plen 12 =
[hci0] 753.249205
LE Read Remote Used Features (0x04)
Status: Success (0x00)
Handle: 128
Features: 0x4f 0x00 0x00 0x00 0x00 0x00 0x00 0x00
LE Encryption
Connection Parameter Request Procedure
Extended Reject Indication
Slave-initiated Features Exchange
LL Privacy
< ACL Data TX: Handle 128 flags 0x00 dlen 11 =
[hci0] 753.250193
SMP: Pairing Request (0x01) len 6
IO capability: KeyboardDisplay (0x04)
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 LinkKey (0x0d)
Responder key distribution: EncKey IdKey Sign LinkKey (0x0f)
< ACL Data TX: Handle 128 flags 0x00 dlen 7 =
[hci0] 753.262956
ATT: Exchange MTU Request (0x02) len 2
Client RX MTU: 517
> ACL Data RX: Handle 128 flags 0x02 dlen 7 =
[hci0] 753.315441
ATT: Exchange MTU Request (0x02) len 2
Client RX MTU: 517
> HCI Event: Number of Completed Packets (0x13) plen 5 =
[hci0] 753.315718
Num handles: 1
Handle: 128
Count: 1
< ACL Data TX: Handle 128 flags 0x00 dlen 7 =
[hci0] 753.316060
ATT: Exchange MTU Response (0x03) len 2
Server RX MTU: 517
> HCI Event: Number of Completed Packets (0x13) plen 5 =
[hci0] 753.316008
Num handles: 1
Handle: 128
Count: 1
> ACL Data RX: Handle 128 flags 0x02 dlen 11 =
[hci0] 753.382935
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: 16
Initiator key distribution: EncKey Sign (0x05)
Responder key distribution: EncKey Sign (0x05)
> HCI Event: Number of Completed Packets (0x13) plen 5 =
[hci0] 753.383085
Num handles: 1
Handle: 128
Count: 1
> ACL Data RX: Handle 128 flags 0x02 dlen 7 =
[hci0] 753.383401
ATT: Exchange MTU Response (0x03) len 2
Server RX MTU: 517
< ACL Data TX: Handle 128 flags 0x00 dlen 69 =
[hci0] 753.385376
SMP: Pairing Public Key (0x0c) len 64
X: 17780eede45fb83689cabb6803f5f0de1da6cfe3d51a3cf5553eafb94910c5b5
Y: 85e0b332945e7190afd622a1fdd5aa5d365722319a25fc8d7d860d02dc60b4af
< ACL Data TX: Handle 128 flags 0x00 dlen 11 =
[hci0] 753.385625
ATT: Read By Group Type Request (0x10) len 6
Handle range: 0x0001-0xffff
Attribute group type: Primary Service (0x2800)
> ACL Data RX: Handle 128 flags 0x02 dlen 11 =
[hci0] 753.451682
ATT: Read By Group Type Request (0x10) len 6
Handle range: 0x0001-0xffff
Attribute group type: Primary Service (0x2800)
> HCI Event: Number of Completed Packets (0x13) plen 5 =
[hci0] 753.451999
Num handles: 1
Handle: 128
Count: 1
< ACL Data TX: Handle 128 flags 0x00 dlen 18 =
[hci0] 753.452165
ATT: Read By Group Type Response (0x11) len 13
Attribute data length: 6
Attribute group list: 2 entries
Handle range: 0x0001-0x0005
UUID: Generic Access Profile (0x1800)
Handle range: 0x0006-0x0009
UUID: Generic Attribute Profile (0x1801)
> HCI Event: Number of Completed Packets (0x13) plen 5 =
[hci0] 753.452420
Num handles: 1
Handle: 128
Count: 1
> HCI Event: Number of Completed Packets (0x13) plen 5 =
[hci0] 753.518890
Num handles: 1
Handle: 128
Count: 1
> ACL Data RX: Handle 128 flags 0x02 dlen 69 =
[hci0] 753.518986
SMP: Pairing Public Key (0x0c) len 64
X: 1da0aaa663fe5fd9da217d0da76c3ee298ba52150bbf2785fddd38f464faef84
Y: 8f378562b6e025f2e2dc4e1e05e501f599f4bb63efde8c46cc98a12cf8cc16f5
> ACL Data RX: Handle 128 flags 0x02 dlen 21 =
[hci0] 753.519023
SMP: Pairing Confirm (0x03) len 16
Confim value: 906ada103cf5a740c67a316e15c5e133
> ACL Data RX: Handle 128 flags 0x02 dlen 18 =
[hci0] 753.519487
ATT: Read By Group Type Response (0x11) len 13
Attribute data length: 6
Attribute group list: 2 entries
Handle range: 0x0001-0x0005
UUID: Generic Access Profile (0x1800)
Handle range: 0x0006-0x0009
UUID: Generic Attribute Profile (0x1801)
< ACL Data TX: Handle 128 flags 0x00 dlen 21 =
[hci0] 753.523611
SMP: Pairing Random (0x04) len 16
Random value: 52bd97adce116ec51777d770ac159c35
< ACL Data TX: Handle 128 flags 0x00 dlen 11 =
[hci0] 753.524480
ATT: Read By Group Type Request (0x10) len 6
Handle range: 0x000a-0xffff
Attribute group type: Primary Service (0x2800)
> ACL Data RX: Handle 128 flags 0x02 dlen 11 =
[hci0] 753.586528
ATT: Read By Group Type Request (0x10) len 6
Handle range: 0x000a-0xffff
Attribute group type: Primary Service (0x2800)
> HCI Event: Number of Completed Packets (0x13) plen 5 =
[hci0] 753.586580
Num handles: 1
Handle: 128
Count: 1
> HCI Event: Number of Completed Packets (0x13) plen 5 =
[hci0] 753.586824
Num handles: 1
Handle: 128
Count: 1
< ACL Data TX: Handle 128 flags 0x00 dlen 9 =
[hci0] 753.586903
ATT: Error Response (0x01) len 4
Read By Group Type Request (0x10)
Handle: 0x000a
Error: Attribute Not Found (0x0a)
> ACL Data RX: Handle 128 flags 0x02 dlen 21 =
[hci0] 753.652953
SMP: Pairing Random (0x04) len 16
Random value: e7af794cd9f6401a29aaedc8fac8db18
> HCI Event: Number of Completed Packets (0x13) plen 5 =
[hci0] 753.653123
Num handles: 1
Handle: 128
Count: 1
> ACL Data RX: Handle 128 flags 0x02 dlen 9 =
[hci0] 753.653417
ATT: Error Response (0x01) len 4
Read By Group Type Request (0x10)
Handle: 0x000a
Error: Attribute Not Found (0x0a)
@ User Confirmation Request: 74:C6:3B:AB:68:EA (1) hint 0 value 706962
< ACL Data TX: Handle 128 flags 0x00 dlen 9 =
[hci0] 753.685954
ATT: Write Request (0x12) len 4
Handle: 0x0009
Data: 0200
> HCI Event: Number of Completed Packets (0x13) plen 5 =
[hci0] 753.720303
Num handles: 1
Handle: 128
Count: 1
> ACL Data RX: Handle 128 flags 0x02 dlen 5 =
[hci0] 753.856549
ATT: Write Response (0x13) len 0
> ACL Data RX: Handle 128 flags 0x02 dlen 9 =
[hci0] 753.856852
ATT: Write Request (0x12) len 4
Handle: 0x0009
Data: 0200
< ACL Data TX: Handle 128 flags 0x00 dlen 5 =
[hci0] 753.857115
ATT: Write Response (0x13) len 0
< ACL Data TX: Handle 128 flags 0x00 dlen 7 =
[hci0] 753.857138
ATT: Read Request (0x0a) len 2
Handle: 0x0003
> HCI Event: Number of Completed Packets (0x13) plen 5 =
[hci0] 753.922945
Num handles: 1
Handle: 128
Count: 1
> HCI Event: Number of Completed Packets (0x13) plen 5 =
[hci0] 753.923257
Num handles: 1
Handle: 128
Count: 1
> ACL Data RX: Handle 128 flags 0x02 dlen 7 =
[hci0] 753.991563
ATT: Read Request (0x0a) len 2
Handle: 0x0003
> ACL Data RX: Handle 128 flags 0x02 dlen 10 =
[hci0] 753.991866
ATT: Read Response (0x0b) len 5
Value: 426c75655a
< ACL Data TX: Handle 128 flags 0x00 dlen 12 =
[hci0] 753.992217
ATT: Read Response (0x0b) len 7
Value: 67697261666665
< ACL Data TX: Handle 128 flags 0x00 dlen 7 =
[hci0] 753.992256
ATT: Read Request (0x0a) len 2
Handle: 0x0005
> HCI Event: Number of Completed Packets (0x13) plen 5 =
[hci0] 754.057946
Num handles: 1
Handle: 128
Count: 1
> HCI Event: Number of Completed Packets (0x13) plen 5 =
[hci0] 754.058278
Num handles: 1
Handle: 128
Count: 1
> ACL Data RX: Handle 128 flags 0x02 dlen 7 =
[hci0] 754.126628
ATT: Read Response (0x0b) len 2
Value: 0000
> ACL Data RX: Handle 128 flags 0x02 dlen 7 =
[hci0] 754.126945
ATT: Read Request (0x0a) len 2
Handle: 0x0005
< ACL Data TX: Handle 128 flags 0x00 dlen 7 =
[hci0] 754.127655
ATT: Read Response (0x0b) len 2
Value: 1001
> HCI Event: Number of Completed Packets (0x13) plen 5 =
[hci0] 754.192985
Num handles: 1
Handle: 128
Count: 1
< ACL Data TX: Handle 128 flags 0x00 dlen 21 =
[hci0] 760.114731
SMP: Pairing DHKey Check (0x0d) len 16
E: f3373b60ba9063449ebef0f3dd7d9781
> HCI Event: Number of Completed Packets (0x13) plen 5 =
[hci0] 760.132942
Num handles: 1
Handle: 128
Count: 1
> ACL Data RX: Handle 128 flags 0x02 dlen 21 =
[hci0] 760.200373
SMP: Pairing DHKey Check (0x0d) len 16
E: 975be5ee4a205e1ac4811baa970abf10
< HCI Command: LE Start Encryption (0x08|0x0019) plen 28 =
[hci0] 760.200595
Handle: 128
Random number: 0x0000000000000000
Encrypted diversifier: 0x0000
Long term key: 7ee01e3f27750b9393533941a4f3e198
> HCI Event: Command Status (0x0f) plen 4 =
[hci0] 760.206677
LE Start Encryption (0x08|0x0019) ncmd 1
Status: Success (0x00)
> ACL Data RX: Handle 128 flags 0x02 dlen 21 =
[hci0] 760.470529
SMP: Signing Information (0x0a) len 16
Signature key: 1866336f92238bf953611245b7ad51f7
> HCI Event: Encryption Change (0x08) plen 4 =
[hci0] 760.470733
Status: Success (0x00)
Handle: 128
Encryption: Enabled with AES-CCM (0x01)
> HCI Event: Disconnect Complete (0x05) plen 4 =
[hci0] 790.576443
Status: Success (0x00)
Handle: 128
Reason: Remote User Terminated Connection (0x13)
@ Device Disconnected: 74:C6:3B:AB:68:EA (1) reason 3
btmon log of slave device:
> HCI Event: LE Meta Event (0x3e) plen 19 [hci0] 201.87=
5863
LE Connection Complete (0x01)
Status: Success (0x00)
Handle: 128
Role: Slave (0x01)
Peer address type: Public (0x00)
Peer address: 74:C6:3B:AB:68:E0 (OUI 74-C6-3B)
Connection interval: 67.50 msec (0x0036)
Connection latency: 0.00 msec (0x0000)
Supervision timeout: 420 msec (0x002a)
Master clock accuracy: 0x01
@ Device Connected: 74:C6:3B:AB:68:E0 (1) flags 0x0000
< HCI Command: LE Read Remote Used Fe.. (0x08|0x0016) plen 2 [hci0] 201.87=
7629
Handle: 128
> HCI Event: Command Status (0x0f) plen 4 [hci0] 201.88=
4437
LE Read Remote Used Features (0x08|0x0016) ncmd 1
Status: Success (0x00)
> HCI Event: LE Meta Event (0x3e) plen 12 [hci0] 202.06=
3367
LE Read Remote Used Features (0x04)
Status: Success (0x00)
Handle: 128
Features: 0x4f 0x00 0x00 0x00 0x00 0x00 0x00 0x00
LE Encryption
Connection Parameter Request Procedure
Extended Reject Indication
Slave-initiated Features Exchange
LL Privacy
< ACL Data TX: Handle 128 flags 0x00 dlen 7 [hci0] 202.07=
6740
ATT: Exchange MTU Request (0x02) len 2
Client RX MTU: 517
> ACL Data RX: Handle 128 flags 0x02 dlen 11 [hci0] 202.13=
0925
SMP: Pairing Request (0x01) len 6
IO capability: KeyboardDisplay (0x04)
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 LinkKey (0x0d)
Responder key distribution: EncKey IdKey Sign LinkKey (0x0f)
> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 202.13=
1213
Num handles: 1
Handle: 128
Count: 1
> ACL Data RX: Handle 128 flags 0x02 dlen 7 [hci0] 202.13=
1481
ATT: Exchange MTU Request (0x02) len 2
Client RX MTU: 517
< ACL Data TX: Handle 128 flags 0x00 dlen 11 [hci0] 202.13=
1616
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: 16
Initiator key distribution: EncKey Sign (0x05)
Responder key distribution: EncKey Sign (0x05)
< ACL Data TX: Handle 128 flags 0x00 dlen 7 [hci0] 202.13=
2157
ATT: Exchange MTU Response (0x03) len 2
Server RX MTU: 517
> ACL Data RX: Handle 128 flags 0x02 dlen 7 [hci0] 202.19=
8437
ATT: Exchange MTU Response (0x03) len 2
Server RX MTU: 517
> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 202.19=
8721
Num handles: 1
Handle: 128
Count: 1
< ACL Data TX: Handle 128 flags 0x00 dlen 11 [hci0] 202.19=
9227
ATT: Read By Group Type Request (0x10) len 6
Handle range: 0x0001-0xffff
Attribute group type: Primary Service (0x2800)
> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 202.26=
4636
Num handles: 1
Handle: 128
Count: 1
> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 202.26=
5101
Num handles: 1
Handle: 128
Count: 1
> ACL Data RX: Handle 128 flags 0x02 dlen 69 [hci0] 202.26=
5382
SMP: Pairing Public Key (0x0c) len 64
X: 17780eede45fb83689cabb6803f5f0de1da6cfe3d51a3cf5553eafb94910c5b5
Y: 85e0b332945e7190afd622a1fdd5aa5d365722319a25fc8d7d860d02dc60b4af
> ACL Data RX: Handle 128 flags 0x02 dlen 11 [hci0] 202.26=
5849
ATT: Read By Group Type Request (0x10) len 6
Handle range: 0x0001-0xffff
Attribute group type: Primary Service (0x2800)
< ACL Data TX: Handle 128 flags 0x00 dlen 69 [hci0] 202.28=
1447
SMP: Pairing Public Key (0x0c) len 64
X: 1da0aaa663fe5fd9da217d0da76c3ee298ba52150bbf2785fddd38f464faef84
Y: 8f378562b6e025f2e2dc4e1e05e501f599f4bb63efde8c46cc98a12cf8cc16f5
< ACL Data TX: Handle 128 flags 0x00 dlen 21 [hci0] 202.28=
1508
SMP: Pairing Confirm (0x03) len 16
Confim value: 906ada103cf5a740c67a316e15c5e133
< ACL Data TX: Handle 128 flags 0x00 dlen 18 [hci0] 202.28=
1958
ATT: Read By Group Type Response (0x11) len 13
Attribute data length: 6
Attribute group list: 2 entries
Handle range: 0x0001-0x0005
UUID: Generic Access Profile (0x1800)
Handle range: 0x0006-0x0009
UUID: Generic Attribute Profile (0x1801)
> ACL Data RX: Handle 128 flags 0x02 dlen 18 [hci0] 202.33=
4680
ATT: Read By Group Type Response (0x11) len 13
Attribute data length: 6
Attribute group list: 2 entries
Handle range: 0x0001-0x0005
UUID: Generic Access Profile (0x1800)
Handle range: 0x0006-0x0009
UUID: Generic Attribute Profile (0x1801)
> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 202.33=
4962
Num handles: 1
Handle: 128
Count: 1
> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 202.33=
5273
Num handles: 1
Handle: 128
Count: 1
< ACL Data TX: Handle 128 flags 0x00 dlen 11 [hci0] 202.33=
5631
ATT: Read By Group Type Request (0x10) len 6
Handle range: 0x000a-0xffff
Attribute group type: Primary Service (0x2800)
> ACL Data RX: Handle 128 flags 0x02 dlen 21 [hci0] 202.39=
9670
SMP: Pairing Random (0x04) len 16
Random value: 52bd97adce116ec51777d770ac159c35
> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 202.39=
9938
Num handles: 1
Handle: 128
Count: 1
< ACL Data TX: Handle 128 flags 0x00 dlen 21 [hci0] 202.39=
9986
SMP: Pairing Random (0x04) len 16
Random value: e7af794cd9f6401a29aaedc8fac8db18
> ACL Data RX: Handle 128 flags 0x02 dlen 11 [hci0] 202.40=
0459
ATT: Read By Group Type Request (0x10) len 6
Handle range: 0x000a-0xffff
Attribute group type: Primary Service (0x2800)
@ User Confirmation Request: 74:C6:3B:AB:68:E0 (1) hint 0 value 706962
< ACL Data TX: Handle 128 flags 0x00 dlen 9 [hci0] 202.40=
0956
ATT: Error Response (0x01) len 4
Read By Group Type Request (0x10)
Handle: 0x000a
Error: Attribute Not Found (0x0a)
> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 202.40=
0898
Num handles: 1
Handle: 128
Count: 1
> ACL Data RX: Handle 128 flags 0x02 dlen 9 [hci0] 202.46=
8436
ATT: Error Response (0x01) len 4
Read By Group Type Request (0x10)
Handle: 0x000a
Error: Attribute Not Found (0x0a)
> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 202.46=
8638
Num handles: 1
Handle: 128
Count: 1
> ACL Data RX: Handle 128 flags 0x02 dlen 9 [hci0] 202.53=
5940
ATT: Write Request (0x12) len 4
Handle: 0x0009
Data: 0200
> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 202.53=
6128
Num handles: 1
Handle: 128
Count: 1
< ACL Data TX: Handle 128 flags 0x00 dlen 5 [hci0] 202.59=
7986
ATT: Write Response (0x13) len 0
< ACL Data TX: Handle 128 flags 0x00 dlen 9 [hci0] 202.59=
8036
ATT: Write Request (0x12) len 4
Handle: 0x0009
Data: 0200
> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 202.67=
0869
Num handles: 1
Handle: 128
Count: 1
> ACL Data RX: Handle 128 flags 0x02 dlen 5 [hci0] 202.73=
7205
ATT: Write Response (0x13) len 0
> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 202.73=
7378
Num handles: 1
Handle: 128
Count: 1
> ACL Data RX: Handle 128 flags 0x02 dlen 7 [hci0] 202.73=
7672
ATT: Read Request (0x0a) len 2
Handle: 0x0003
< ACL Data TX: Handle 128 flags 0x00 dlen 7 [hci0] 202.73=
7767
ATT: Read Request (0x0a) len 2
Handle: 0x0003
< ACL Data TX: Handle 128 flags 0x00 dlen 10 [hci0] 202.73=
7914
ATT: Read Response (0x0b) len 5
Value: 426c75655a
> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 202.80=
5865
Num handles: 1
Handle: 128
Count: 1
> ACL Data RX: Handle 128 flags 0x02 dlen 12 [hci0] 202.87=
2207
ATT: Read Response (0x0b) len 7
Value: 67697261666665
> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 202.87=
2429
Num handles: 1
Handle: 128
Count: 1
> ACL Data RX: Handle 128 flags 0x02 dlen 7 [hci0] 202.87=
2742
ATT: Read Request (0x0a) len 2
Handle: 0x0005
< ACL Data TX: Handle 128 flags 0x00 dlen 7 [hci0] 202.87=
3489
ATT: Read Response (0x0b) len 2
Value: 0000
< ACL Data TX: Handle 128 flags 0x00 dlen 7 [hci0] 202.87=
3543
ATT: Read Request (0x0a) len 2
Handle: 0x0005
> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 202.94=
0673
Num handles: 1
Handle: 128
Count: 1
> ACL Data RX: Handle 128 flags 0x02 dlen 7 [hci0] 203.00=
9022
ATT: Read Response (0x0b) len 2
Value: 1001
> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 203.00=
9069
Num handles: 1
Handle: 128
Count: 1
> ACL Data RX: Handle 128 flags 0x02 dlen 21 [hci0] 208.94=
8405
SMP: Pairing DHKey Check (0x0d) len 16
E: f3373b60ba9063449ebef0f3dd7d9781
< ACL Data TX: Handle 128 flags 0x00 dlen 21 [hci0] 208.94=
8615
SMP: Pairing DHKey Check (0x0d) len 16
E: 975be5ee4a205e1ac4811baa970abf10
> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 209.08=
3476
Num handles: 1
Handle: 128
Count: 1
> HCI Event: LE Meta Event (0x3e) plen 13 [hci0] 209.08=
3793
LE Long Term Key Request (0x05)
Handle: 128
Random number: 0x0000000000000000
Encrypted diversifier: 0x0000
< HCI Command: LE Long Term Key Requ.. (0x08|0x001a) plen 18 [hci0] 209.08=
3869
Handle: 128
Long term key: 7ee01e3f27750b9393533941a4f3e198
> HCI Event: Command Complete (0x0e) plen 6 [hci0] 209.08=
7194
LE Long Term Key Request Reply (0x08|0x001a) ncmd 1
Status: Success (0x00)
Handle: 128
> HCI Event: Encryption Change (0x08) plen 4 [hci0] 209.21=
8486
Status: Success (0x00)
Handle: 128
Encryption: Enabled with AES-CCM (0x01)
< ACL Data TX: Handle 128 flags 0x00 dlen 21 [hci0] 209.21=
8733
SMP: Signing Information (0x0a) len 16
Signature key: 1866336f92238bf953611245b7ad51f7
> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 209.35=
2241
Num handles: 1
Handle: 128
Count: 1
< HCI Command: Disconnect (0x01|0x0006) plen 3 [hci0] 239.26=
1952
Handle: 128
Reason: Remote User Terminated Connection (0x13)
> HCI Event: Command Status (0x0f) plen 4 [hci0] 239.26=
8876
Disconnect (0x01|0x0006) ncmd 1
Status: Success (0x00)
> HCI Event: Disconnect Complete (0x05) plen 4 [hci0] 239.39=
2130
Status: Success (0x00)
Handle: 128
Reason: Connection Terminated By Local Host (0x16)
@ Device Disconnected: 74:C6:3B:AB:68:E0 (1) reason 2
Thank you.
Best regards,
Joshua
Hi Joshua,
please refrain from top posting on this mailing list.
> Thank you for your reply. We are using the 4.1.x kernel as our group has performed validation work on it and achieved 'Gold release' standard for our customers.
> I have attached my logs during the LE pairing process at the end of this email. There are two logs namely master and slave device. Note that the logs I provided is for secure connections on.
> The log I sent previously was ford secure connections turned off. Nonetheless, the LE pairing fails on both settings i.e. when secured connections is turned on and when secured connections is turned off.
So the pairing itself succeeds, but for some reason the mgmt command indicating its completion.
> < ACL Data TX: Handle 128 flags 0x00 dlen 21 [hci0] 760.114731
> SMP: Pairing DHKey Check (0x0d) len 16
> E: f3373b60ba9063449ebef0f3dd7d9781
>> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 760.132942
> Num handles: 1
> Handle: 128
> Count: 1
>> ACL Data RX: Handle 128 flags 0x02 dlen 21 [hci0] 760.200373
> SMP: Pairing DHKey Check (0x0d) len 16
> E: 975be5ee4a205e1ac4811baa970abf10
> < HCI Command: LE Start Encryption (0x08|0x0019) plen 28 [hci0] 760.200595
> Handle: 128
> Random number: 0x0000000000000000
> Encrypted diversifier: 0x0000
> Long term key: 7ee01e3f27750b9393533941a4f3e198
>> HCI Event: Command Status (0x0f) plen 4 [hci0] 760.206677
> LE Start Encryption (0x08|0x0019) ncmd 1
> Status: Success (0x00)
>> ACL Data RX: Handle 128 flags 0x02 dlen 21 [hci0] 760.470529
> SMP: Signing Information (0x0a) len 16
> Signature key: 1866336f92238bf953611245b7ad51f7
>> HCI Event: Encryption Change (0x08) plen 4 [hci0] 760.470733
> Status: Success (0x00)
> Handle: 128
> Encryption: Enabled with AES-CCM (0x01)
>> HCI Event: Disconnect Complete (0x05) plen 4 [hci0] 790.576443
> Status: Success (0x00)
> Handle: 128
> Reason: Remote User Terminated Connection (0x13)
> @ Device Disconnected: 74:C6:3B:AB:68:EA (1) reason 3
The pairing itself completes and the encryption gets enabled. Also the CSRK gets distributed (note LTK gets not distributed in the SC case).
What is missing here is that mgmt notifies user space about the new LTK and CSRK. However what I wonder is if the CSRK distribution might cause some issue since it is the only distributed material. I don’t think that I have seen that before.
Can this be reproduced with a 4.9 kernel?
Regards
Marcel