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Bluetooth: Add debug logs for legacy SMP crypto functions

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To help debug legacy SMP crypto functions add debug logs of the
various values involved.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Johan Hedberg 2015-05-19 21:06:04 +03:00 committed by Marcel Holtmann
parent 73e85ed36a
commit 011c391a09
1 changed files with 16 additions and 4 deletions
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20
net/bluetooth/smp.c
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@ -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);