diff options
| -rw-r--r-- | net/bluetooth/smp.c | 18 | ||||
| -rw-r--r-- | net/bluetooth/smp.h | 1 |
2 files changed, 19 insertions, 0 deletions
diff --git a/net/bluetooth/smp.c b/net/bluetooth/smp.c index b9eef494fc0a..79a80f44c832 100644 --- a/net/bluetooth/smp.c +++ b/net/bluetooth/smp.c @@ -124,6 +124,24 @@ bool smp_irk_matches(struct crypto_blkcipher *tfm, u8 irk[16], return !memcmp(bdaddr->b, hash, 3); } +int smp_generate_rpa(struct crypto_blkcipher *tfm, u8 irk[16], bdaddr_t *rpa) +{ + int err; + + get_random_bytes(&rpa->b[3], 3); + + rpa->b[5] &= 0x3f; /* Clear two most significant bits */ + rpa->b[5] |= 0x40; /* Set second most significant bit */ + + err = smp_ah(tfm, irk, &rpa->b[3], rpa->b); + if (err < 0) + return err; + + BT_DBG("RPA %pMR", rpa); + + return 0; +} + static int smp_c1(struct crypto_blkcipher *tfm, u8 k[16], u8 r[16], u8 preq[7], u8 pres[7], u8 _iat, bdaddr_t *ia, u8 _rat, bdaddr_t *ra, u8 res[16]) diff --git a/net/bluetooth/smp.h b/net/bluetooth/smp.h index d8cc543f523c..f32f1212f650 100644 --- a/net/bluetooth/smp.h +++ b/net/bluetooth/smp.h @@ -152,5 +152,6 @@ void smp_chan_destroy(struct l2cap_conn *conn); bool smp_irk_matches(struct crypto_blkcipher *tfm, u8 irk[16], bdaddr_t *bdaddr); +int smp_generate_rpa(struct crypto_blkcipher *tfm, u8 irk[16], bdaddr_t *rpa); #endif /* __SMP_H */ |