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authorJohan Hedberg <johan.hedberg@intel.com>2015-05-19 21:06:04 +0300
committerMarcel Holtmann <marcel@holtmann.org>2015-05-19 21:07:29 +0200
commit011c391a090e243ef0116805a6ad77df74c22cc0 (patch)
treeb9c04b29cf3e18bcbf0cf8ab6aa5065bd9463b85 /net/bluetooth/smp.c
parent73e85ed36a96324a2ba5990024f621bf9907fbd5 (diff)
downloadlinux-011c391a090e243ef0116805a6ad77df74c22cc0.tar.bz2
Bluetooth: Add debug logs for legacy SMP crypto functions
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>
Diffstat (limited to 'net/bluetooth/smp.c')
-rw-r--r--net/bluetooth/smp.c20
1 files 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);