Bluetooth: Add support for ECDH test cases

This patch adds the test cases for ECDH cryptographic functionality
used by Bluetooth Low Energy Secure Connections feature.

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

diff --git a/net/bluetooth/Kconfig b/net/bluetooth/Kconfig
index 3296841531c9834ae6ddb12d22fe0842ae5f1ce1..8d3b607a72be9f0e7e1740db1cdf9f273c3d1207 100644 (file)
--- a/net/bluetooth/Kconfig
+++ b/net/bluetooth/Kconfig
@@ -77,4 +77,11 @@ config BT_SELFTEST
          subsystem is compiled into the kernel image, then the test cases
          are run late in the initcall hierarchy.
 
+config BT_SELFTEST_ECDH
+       bool "ECDH test cases"
+       depends on BT_LE && BT_SELFTEST
+       help
+         Run test cases for ECDH cryptographic functionality used by the
+         Bluetooth Low Energy Secure Connections feature.
+
 source "drivers/bluetooth/Kconfig"

diff --git a/net/bluetooth/selftest.c b/net/bluetooth/selftest.c
index 00cac4a5e2299f4f4e26b47968658dcb5bc0ad1f..b9cb33cd45d7186c9c65322ef1d25c16df558802 100644 (file)
--- a/net/bluetooth/selftest.c
+++ b/net/bluetooth/selftest.c
@@ -23,15 +23,182 @@
 
 #include <net/bluetooth/bluetooth.h>
 
+#include "ecc.h"
 #include "selftest.h"
 
+#if IS_ENABLED(CONFIG_BT_SELFTEST_ECDH)
+
+static const u8 priv_a_1[32] __initconst = {
+       0xbd, 0x1a, 0x3c, 0xcd, 0xa6, 0xb8, 0x99, 0x58,
+       0x99, 0xb7, 0x40, 0xeb, 0x7b, 0x60, 0xff, 0x4a,
+       0x50, 0x3f, 0x10, 0xd2, 0xe3, 0xb3, 0xc9, 0x74,
+       0x38, 0x5f, 0xc5, 0xa3, 0xd4, 0xf6, 0x49, 0x3f,
+};
+static const u8 priv_b_1[32] __initconst = {
+       0xfd, 0xc5, 0x7f, 0xf4, 0x49, 0xdd, 0x4f, 0x6b,
+       0xfb, 0x7c, 0x9d, 0xf1, 0xc2, 0x9a, 0xcb, 0x59,
+       0x2a, 0xe7, 0xd4, 0xee, 0xfb, 0xfc, 0x0a, 0x90,
+       0x9a, 0xbb, 0xf6, 0x32, 0x3d, 0x8b, 0x18, 0x55,
+};
+static const u8 pub_a_1[64] __initconst = {
+       0xe6, 0x9d, 0x35, 0x0e, 0x48, 0x01, 0x03, 0xcc,
+       0xdb, 0xfd, 0xf4, 0xac, 0x11, 0x91, 0xf4, 0xef,
+       0xb9, 0xa5, 0xf9, 0xe9, 0xa7, 0x83, 0x2c, 0x5e,
+       0x2c, 0xbe, 0x97, 0xf2, 0xd2, 0x03, 0xb0, 0x20,
+
+       0x8b, 0xd2, 0x89, 0x15, 0xd0, 0x8e, 0x1c, 0x74,
+       0x24, 0x30, 0xed, 0x8f, 0xc2, 0x45, 0x63, 0x76,
+       0x5c, 0x15, 0x52, 0x5a, 0xbf, 0x9a, 0x32, 0x63,
+       0x6d, 0xeb, 0x2a, 0x65, 0x49, 0x9c, 0x80, 0xdc,
+};
+static const u8 pub_b_1[64] __initconst = {
+       0x90, 0xa1, 0xaa, 0x2f, 0xb2, 0x77, 0x90, 0x55,
+       0x9f, 0xa6, 0x15, 0x86, 0xfd, 0x8a, 0xb5, 0x47,
+       0x00, 0x4c, 0x9e, 0xf1, 0x84, 0x22, 0x59, 0x09,
+       0x96, 0x1d, 0xaf, 0x1f, 0xf0, 0xf0, 0xa1, 0x1e,
+
+       0x4a, 0x21, 0xb1, 0x15, 0xf9, 0xaf, 0x89, 0x5f,
+       0x76, 0x36, 0x8e, 0xe2, 0x30, 0x11, 0x2d, 0x47,
+       0x60, 0x51, 0xb8, 0x9a, 0x3a, 0x70, 0x56, 0x73,
+       0x37, 0xad, 0x9d, 0x42, 0x3e, 0xf3, 0x55, 0x4c,
+};
+static const u8 dhkey_1[32] __initconst = {
+       0x98, 0xa6, 0xbf, 0x73, 0xf3, 0x34, 0x8d, 0x86,
+       0xf1, 0x66, 0xf8, 0xb4, 0x13, 0x6b, 0x79, 0x99,
+       0x9b, 0x7d, 0x39, 0x0a, 0xa6, 0x10, 0x10, 0x34,
+       0x05, 0xad, 0xc8, 0x57, 0xa3, 0x34, 0x02, 0xec,
+};
+
+static const u8 priv_a_2[32] __initconst = {
+       0x63, 0x76, 0x45, 0xd0, 0xf7, 0x73, 0xac, 0xb7,
+       0xff, 0xdd, 0x03, 0x72, 0xb9, 0x72, 0x85, 0xb4,
+       0x41, 0xb6, 0x5d, 0x0c, 0x5d, 0x54, 0x84, 0x60,
+       0x1a, 0xa3, 0x9a, 0x3c, 0x69, 0x16, 0xa5, 0x06,
+};
+static const u8 priv_b_2[32] __initconst = {
+       0xba, 0x30, 0x55, 0x50, 0x19, 0xa2, 0xca, 0xa3,
+       0xa5, 0x29, 0x08, 0xc6, 0xb5, 0x03, 0x88, 0x7e,
+       0x03, 0x2b, 0x50, 0x73, 0xd4, 0x2e, 0x50, 0x97,
+       0x64, 0xcd, 0x72, 0x0d, 0x67, 0xa0, 0x9a, 0x52,
+};
+static const u8 pub_a_2[64] __initconst = {
+       0xdd, 0x78, 0x5c, 0x74, 0x03, 0x9b, 0x7e, 0x98,
+       0xcb, 0x94, 0x87, 0x4a, 0xad, 0xfa, 0xf8, 0xd5,
+       0x43, 0x3e, 0x5c, 0xaf, 0xea, 0xb5, 0x4c, 0xf4,
+       0x9e, 0x80, 0x79, 0x57, 0x7b, 0xa4, 0x31, 0x2c,
+
+       0x4f, 0x5d, 0x71, 0x43, 0x77, 0x43, 0xf8, 0xea,
+       0xd4, 0x3e, 0xbd, 0x17, 0x91, 0x10, 0x21, 0xd0,
+       0x1f, 0x87, 0x43, 0x8e, 0x40, 0xe2, 0x52, 0xcd,
+       0xbe, 0xdf, 0x98, 0x38, 0x18, 0x12, 0x95, 0x91,
+};
+static const u8 pub_b_2[64] __initconst = {
+       0xcc, 0x00, 0x65, 0xe1, 0xf5, 0x6c, 0x0d, 0xcf,
+       0xec, 0x96, 0x47, 0x20, 0x66, 0xc9, 0xdb, 0x84,
+       0x81, 0x75, 0xa8, 0x4d, 0xc0, 0xdf, 0xc7, 0x9d,
+       0x1b, 0x3f, 0x3d, 0xf2, 0x3f, 0xe4, 0x65, 0xf4,
+
+       0x79, 0xb2, 0xec, 0xd8, 0xca, 0x55, 0xa1, 0xa8,
+       0x43, 0x4d, 0x6b, 0xca, 0x10, 0xb0, 0xc2, 0x01,
+       0xc2, 0x33, 0x4e, 0x16, 0x24, 0xc4, 0xef, 0xee,
+       0x99, 0xd8, 0xbb, 0xbc, 0x48, 0xd0, 0x01, 0x02,
+};
+static const u8 dhkey_2[32] __initconst = {
+       0x69, 0xeb, 0x21, 0x32, 0xf2, 0xc6, 0x05, 0x41,
+       0x60, 0x19, 0xcd, 0x5e, 0x94, 0xe1, 0xe6, 0x5f,
+       0x33, 0x07, 0xe3, 0x38, 0x4b, 0x68, 0xe5, 0x62,
+       0x3f, 0x88, 0x6d, 0x2f, 0x3a, 0x84, 0x85, 0xab,
+};
+
+static const u8 priv_a_3[32] __initconst = {
+       0xbd, 0x1a, 0x3c, 0xcd, 0xa6, 0xb8, 0x99, 0x58,
+       0x99, 0xb7, 0x40, 0xeb, 0x7b, 0x60, 0xff, 0x4a,
+       0x50, 0x3f, 0x10, 0xd2, 0xe3, 0xb3, 0xc9, 0x74,
+       0x38, 0x5f, 0xc5, 0xa3, 0xd4, 0xf6, 0x49, 0x3f,
+};
+static const u8 pub_a_3[64] __initconst = {
+       0xe6, 0x9d, 0x35, 0x0e, 0x48, 0x01, 0x03, 0xcc,
+       0xdb, 0xfd, 0xf4, 0xac, 0x11, 0x91, 0xf4, 0xef,
+       0xb9, 0xa5, 0xf9, 0xe9, 0xa7, 0x83, 0x2c, 0x5e,
+       0x2c, 0xbe, 0x97, 0xf2, 0xd2, 0x03, 0xb0, 0x20,
+
+       0x8b, 0xd2, 0x89, 0x15, 0xd0, 0x8e, 0x1c, 0x74,
+       0x24, 0x30, 0xed, 0x8f, 0xc2, 0x45, 0x63, 0x76,
+       0x5c, 0x15, 0x52, 0x5a, 0xbf, 0x9a, 0x32, 0x63,
+       0x6d, 0xeb, 0x2a, 0x65, 0x49, 0x9c, 0x80, 0xdc,
+};
+static const u8 dhkey_3[32] __initconst = {
+       0x2d, 0xab, 0x00, 0x48, 0xcb, 0xb3, 0x7b, 0xda,
+       0x55, 0x7b, 0x8b, 0x72, 0xa8, 0x57, 0x87, 0xc3,
+       0x87, 0x27, 0x99, 0x32, 0xfc, 0x79, 0x5f, 0xae,
+       0x7c, 0x1c, 0xf9, 0x49, 0xe6, 0xd7, 0xaa, 0x70,
+};
+
+static int __init test_ecdh_sample(const u8 priv_a[32], const u8 priv_b[32],
+                                  const u8 pub_a[64], const u8 pub_b[64],
+                                  const u8 dhkey[32])
+{
+       u8 dhkey_a[32], dhkey_b[32];
+
+       ecdh_shared_secret(pub_b, priv_a, dhkey_a);
+       ecdh_shared_secret(pub_a, priv_b, dhkey_b);
+
+       if (memcmp(dhkey_a, dhkey, 32))
+               return -EINVAL;
+
+       if (memcmp(dhkey_b, dhkey, 32))
+               return -EINVAL;
+
+       return 0;
+}
+
+static int __init test_ecdh(void)
+{
+       int err;
+
+       err = test_ecdh_sample(priv_a_1, priv_b_1, pub_a_1, pub_b_1, dhkey_1);
+       if (err) {
+               BT_ERR("ECDH sample 1 failed");
+               return err;
+       }
+
+       err = test_ecdh_sample(priv_a_2, priv_b_2, pub_a_2, pub_b_2, dhkey_2);
+       if (err) {
+               BT_ERR("ECDH sample 2 failed");
+               return err;
+       }
+
+       err = test_ecdh_sample(priv_a_3, priv_a_3, pub_a_3, pub_a_3, dhkey_3);
+       if (err) {
+               BT_ERR("ECDH sample 3 failed");
+               return err;
+       }
+
+       BT_INFO("ECDH test passed");
+
+       return 0;
+}
+
+#else
+
+static inline int test_ecdh(void)
+{
+       return 0;
+}
+
+#endif
+
 static int __init run_selftest(void)
 {
+       int err;
+
        BT_INFO("Starting self testing");
 
+       err = test_ecdh();
+
        BT_INFO("Finished self testing");
 
-       return 0;
+       return err;
 }
 
 #if IS_MODULE(CONFIG_BT)