diff options
| author | Marcel Holtmann <marcel@holtmann.org> | 2015-03-16 01:10:21 -0700 |
|---|---|---|
| committer | Johan Hedberg <johan.hedberg@intel.com> | 2015-03-16 10:31:25 +0200 |
| commit | 6e2dc6d1133f5f8bfd028ba7d1c3fb0b3fa717e9 (patch) | |
| tree | dc55b12ffd6fb35baead4445774adf9006e3fb6c /net/bluetooth/smp.c | |
| parent | f709bfcf6a292560ce187c33fd099ee495c0a404 (diff) | |
| download | linux-6e2dc6d1133f5f8bfd028ba7d1c3fb0b3fa717e9.tar.bz2 | |
Bluetooth: Add support for AES-CMAC hash for security manager device
The security manager device will require the use of AES-CMAC hash for
out-of-band data generation. This patch makes sure it is correctly
set up and available.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Diffstat (limited to 'net/bluetooth/smp.c')
| -rw-r--r-- | net/bluetooth/smp.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/net/bluetooth/smp.c b/net/bluetooth/smp.c index 952ba6376e1c..12e9c833885b 100644 --- a/net/bluetooth/smp.c +++ b/net/bluetooth/smp.c @@ -75,6 +75,7 @@ enum { struct smp_dev { struct crypto_blkcipher *tfm_aes; + struct crypto_hash *tfm_cmac; }; struct smp_chan { @@ -2936,6 +2937,7 @@ static struct l2cap_chan *smp_add_cid(struct hci_dev *hdev, u16 cid) struct l2cap_chan *chan; struct smp_dev *smp; struct crypto_blkcipher *tfm_aes; + struct crypto_hash *tfm_cmac; if (cid == L2CAP_CID_SMP_BREDR) { smp = NULL; @@ -2953,12 +2955,22 @@ static struct l2cap_chan *smp_add_cid(struct hci_dev *hdev, u16 cid) return ERR_CAST(tfm_aes); } + tfm_cmac = crypto_alloc_hash("cmac(aes)", 0, CRYPTO_ALG_ASYNC); + if (IS_ERR(tfm_cmac)) { + BT_ERR("Unable to create CMAC crypto context"); + crypto_free_blkcipher(tfm_aes); + kzfree(smp); + return ERR_CAST(tfm_cmac); + } + smp->tfm_aes = tfm_aes; + smp->tfm_cmac = tfm_cmac; create_chan: chan = l2cap_chan_create(); if (!chan) { crypto_free_blkcipher(smp->tfm_aes); + crypto_free_hash(smp->tfm_cmac); kzfree(smp); return ERR_PTR(-ENOMEM); } @@ -3005,6 +3017,8 @@ static void smp_del_chan(struct l2cap_chan *chan) chan->data = NULL; if (smp->tfm_aes) crypto_free_blkcipher(smp->tfm_aes); + if (smp->tfm_cmac) + crypto_free_hash(smp->tfm_cmac); kzfree(smp); } |