* [PATCH] Bluetooth: Add debug logs for legacy SMP crypto functions
@ 2015-05-19 18:06 Johan Hedberg
2015-05-19 19:08 ` Marcel Holtmann
0 siblings, 1 reply; 2+ messages in thread
From: Johan Hedberg @ 2015-05-19 18:06 UTC (permalink / raw)
To: linux-bluetooth
From: Johan Hedberg <johan.hedberg@intel.com>
To help debug legacy SMP crypto functions add debug logs of the
various values involved.
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
---
net/bluetooth/smp.c | 20 ++++++++++++++++----
1 file changed, 16 insertions(+), 4 deletions(-)
diff --git a/net/bluetooth/smp.c b/net/bluetooth/smp.c
index 1ab3dc9c8f99..659371af39e4 100644
--- a/net/bluetooth/smp.c
+++ b/net/bluetooth/smp.c
@@ -371,6 +371,8 @@ static int smp_e(struct crypto_blkcipher *tfm, const u8 *k, u8 *r)
uint8_t tmp[16], data[16];
int err;
+ SMP_DBG("k %16phN r %16phN", k, r);
+
if (!tfm) {
BT_ERR("tfm %p", tfm);
return -EINVAL;
@@ -400,6 +402,8 @@ static int smp_e(struct crypto_blkcipher *tfm, const u8 *k, u8 *r)
/* Most significant octet of encryptedData corresponds to data[0] */
swap_buf(data, r, 16);
+ SMP_DBG("r %16phN", r);
+
return err;
}
@@ -410,6 +414,10 @@ static int smp_c1(struct crypto_blkcipher *tfm_aes, const u8 k[16],
u8 p1[16], p2[16];
int err;
+ SMP_DBG("k %16phN r %16phN", k, r);
+ SMP_DBG("iat %u ia %6phN rat %u ra %6phN", _iat, ia, _rat, ra);
+ SMP_DBG("preq %7phN pres %7phN", preq, pres);
+
memset(p1, 0, 16);
/* p1 = pres || preq || _rat || _iat */
@@ -418,10 +426,7 @@ static int smp_c1(struct crypto_blkcipher *tfm_aes, const u8 k[16],
memcpy(p1 + 2, preq, 7);
memcpy(p1 + 9, pres, 7);
- /* p2 = padding || ia || ra */
- memcpy(p2, ra, 6);
- memcpy(p2 + 6, ia, 6);
- memset(p2 + 12, 0, 4);
+ SMP_DBG("p1 %16phN", p1);
/* res = r XOR p1 */
u128_xor((u128 *) res, (u128 *) r, (u128 *) p1);
@@ -433,6 +438,13 @@ static int smp_c1(struct crypto_blkcipher *tfm_aes, const u8 k[16],
return err;
}
+ /* p2 = padding || ia || ra */
+ memcpy(p2, ra, 6);
+ memcpy(p2 + 6, ia, 6);
+ memset(p2 + 12, 0, 4);
+
+ SMP_DBG("p2 %16phN", p2);
+
/* res = res XOR p2 */
u128_xor((u128 *) res, (u128 *) res, (u128 *) p2);
--
2.1.0
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] Bluetooth: Add debug logs for legacy SMP crypto functions
2015-05-19 18:06 [PATCH] Bluetooth: Add debug logs for legacy SMP crypto functions Johan Hedberg
@ 2015-05-19 19:08 ` Marcel Holtmann
0 siblings, 0 replies; 2+ messages in thread
From: Marcel Holtmann @ 2015-05-19 19:08 UTC (permalink / raw)
To: Johan Hedberg; +Cc: linux-bluetooth
Hi Johan,
> To help debug legacy SMP crypto functions add debug logs of the
> various values involved.
>
> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
> ---
> net/bluetooth/smp.c | 20 ++++++++++++++++----
> 1 file changed, 16 insertions(+), 4 deletions(-)
patch has been applied to bluetooth-next tree.
Regards
Marcel
^ permalink raw reply [flat|nested] 2+ messages in thread
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2015-05-19 19:08 ` Marcel Holtmann
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