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authorBrian Gix <bgix@codeaurora.org>2011-12-21 16:12:12 -0800
committerGustavo F. Padovan <padovan@profusion.mobi>2011-12-22 14:18:59 -0200
commit2b64d153a0cc9d2b60e47be013cde8490f16e0a5 (patch)
treeea075313e9f03379ee1313ca230b07dadd937dad /include/net
parent371fd83563252f550ce59476a7366d0b5171d316 (diff)
Bluetooth: Add MITM mechanism to LE-SMP
To achive Man-In-The-Middle (MITM) level security with Low Energy, we have to enable User Passkey Comparison. This commit modifies the hard-coded JUST-WORKS pairing mechanism to support query via the MGMT interface of Passkey comparison and User Confirmation. Signed-off-by: Brian Gix <bgix@codeaurora.org> Acked-by: Marcel Holtmann<marcel@holtmann.org> Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Diffstat (limited to 'include/net')
-rw-r--r--include/net/bluetooth/hci_core.h1
-rw-r--r--include/net/bluetooth/smp.h6
2 files changed, 7 insertions, 0 deletions
diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 5ce73dbaf604..4ff08d61eea5 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -310,6 +310,7 @@ struct hci_conn {
struct hci_dev *hdev;
void *l2cap_data;
void *sco_data;
+ void *smp_conn;
struct hci_conn *link;
diff --git a/include/net/bluetooth/smp.h b/include/net/bluetooth/smp.h
index 15b97d549441..aeaf5fa2b9f1 100644
--- a/include/net/bluetooth/smp.h
+++ b/include/net/bluetooth/smp.h
@@ -115,6 +115,10 @@ struct smp_cmd_security_req {
#define SMP_MIN_ENC_KEY_SIZE 7
#define SMP_MAX_ENC_KEY_SIZE 16
+#define SMP_FLAG_TK_VALID 1
+#define SMP_FLAG_CFM_PENDING 2
+#define SMP_FLAG_MITM_AUTH 3
+
struct smp_chan {
struct l2cap_conn *conn;
u8 preq[7]; /* SMP Pairing Request */
@@ -124,6 +128,7 @@ struct smp_chan {
u8 pcnf[16]; /* SMP Pairing Confirm */
u8 tk[16]; /* SMP Temporary Key */
u8 smp_key_size;
+ unsigned long smp_flags;
struct crypto_blkcipher *tfm;
struct work_struct confirm;
struct work_struct random;
@@ -134,6 +139,7 @@ struct smp_chan {
int smp_conn_security(struct l2cap_conn *conn, __u8 sec_level);
int smp_sig_channel(struct l2cap_conn *conn, struct sk_buff *skb);
int smp_distribute_keys(struct l2cap_conn *conn, __u8 force);
+int smp_user_confirm_reply(struct hci_conn *conn, u16 mgmt_op, __le32 passkey);
void smp_chan_destroy(struct l2cap_conn *conn);