Bluetooth: Add self-tests for SMP crypto functions

This patch adds self-tests for the c1 and s1 crypto functions used for
SMP pairing. The data used is the sample data from the core
specification.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

diff --git a/net/bluetooth/smp.c b/net/bluetooth/smp.c
index 9821dc938e2c2bd25d207928973a522e484a00a9..983d1e0793f6e13f890c8ad7f6e30474dd44d635 100644 (file)
--- a/net/bluetooth/smp.c
+++ b/net/bluetooth/smp.c
@@ -1746,8 +1746,95 @@ void smp_unregister(struct hci_dev *hdev)
 
 #ifdef CONFIG_BT_SELFTEST
 
+static int __init test_ah(struct crypto_blkcipher *tfm_aes)
+{
+       u8 irk[16] = {  0x9b, 0x7d, 0x39, 0x0a, 0xa6, 0x10, 0x10, 0x34,
+                       0x05, 0xad, 0xc8, 0x57, 0xa3, 0x34, 0x02, 0xec };
+       u8 r[3] = {     0x94, 0x81, 0x70 };
+       u8 exp[3] = {   0xaa, 0xfb, 0x0d };
+       u8 res[3];
+       int err;
+
+       err = smp_ah(tfm_aes, irk, r, res);
+       if (err)
+               return err;
+
+       if (memcmp(res, exp, 3) != 0)
+               return -EINVAL;
+
+       return 0;
+}
+
+static int __init test_c1(struct crypto_blkcipher *tfm_aes)
+{
+       u8 k[16] = {    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                       0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
+       u8 r[16] = {    0xe0, 0x2e, 0x70, 0xc6, 0x4e, 0x27, 0x88, 0x63,
+                       0x0e, 0x6f, 0xad, 0x56, 0x21, 0xd5, 0x83, 0x57 };
+       u8 preq[7] = {  0x01, 0x01, 0x00, 0x00, 0x10, 0x07, 0x07 };
+       u8 pres[7] = {  0x02, 0x03, 0x00, 0x00, 0x08, 0x00, 0x05 };
+       u8 _iat =       0x01;
+       u8 _rat =       0x00;
+       bdaddr_t ra = { { 0xb6, 0xb5, 0xb4, 0xb3, 0xb2, 0xb1 } };
+       bdaddr_t ia = { { 0xa6, 0xa5, 0xa4, 0xa3, 0xa2, 0xa1 } };
+       u8 exp[16] = {  0x86, 0x3b, 0xf1, 0xbe, 0xc5, 0x4d, 0xa7, 0xd2,
+                       0xea, 0x88, 0x89, 0x87, 0xef, 0x3f, 0x1e, 0x1e };
+       u8 res[16];
+       int err;
+
+       err = smp_c1(tfm_aes, k, r, preq, pres, _iat, &ia, _rat, &ra, res);
+       if (err)
+               return err;
+
+       if (memcmp(res, exp, 16) != 0)
+               return -EINVAL;
+
+       return 0;
+}
+
+static int __init test_s1(struct crypto_blkcipher *tfm_aes)
+{
+       u8 k[16] = {    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                       0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
+       u8 r1[16] = {   0x88, 0x77, 0x66, 0x55, 0x44, 0x33, 0x22, 0x11 };
+       u8 r2[16] = {   0x00, 0xff, 0xee, 0xdd, 0xcc, 0xbb, 0xaa, 0x99 };
+       u8 exp[16] = {  0x62, 0xa0, 0x6d, 0x79, 0xae, 0x16, 0x42, 0x5b,
+                       0x9b, 0xf4, 0xb0, 0xe8, 0xf0, 0xe1, 0x1f, 0x9a };
+       u8 res[16];
+       int err;
+
+       err = smp_s1(tfm_aes, k, r1, r2, res);
+       if (err)
+               return err;
+
+       if (memcmp(res, exp, 16) != 0)
+               return -EINVAL;
+
+       return 0;
+}
+
 static int __init run_selftests(struct crypto_blkcipher *tfm_aes)
 {
+       int err;
+
+       err = test_ah(tfm_aes);
+       if (err) {
+               BT_ERR("smp_ah test failed");
+               return err;
+       }
+
+       err = test_c1(tfm_aes);
+       if (err) {
+               BT_ERR("smp_c1 test failed");
+               return err;
+       }
+
+       err = test_s1(tfm_aes);
+       if (err) {
+               BT_ERR("smp_s1 test failed");
+               return err;
+       }
+
        return 0;
 }