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[174.21.24.126]) by smtp.gmail.com with ESMTPSA id y13-20020a17090322cd00b001896af10ca7sm5149967plg.134.2023.01.20.11.47.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 20 Jan 2023 11:47:40 -0800 (PST) From: Brian Gix To: linux-bluetooth@vger.kernel.org Cc: Brian Gix Subject: [PATCH BlueZ v2 05/11] unit/mesh: Add unit testing of Mesh Private Beaconing Date: Fri, 20 Jan 2023 11:47:25 -0800 Message-Id: <20230120194731.90065-6-brian.gix@gmail.com> X-Mailer: git-send-email 2.39.0 In-Reply-To: <20230120194731.90065-1-brian.gix@gmail.com> References: <20230120194731.90065-1-brian.gix@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org From: Brian Gix This includes the Sample Data from the Mesh Profile specification v1.1, and validates that the beacon crypto functions work as expected. --- unit/test-mesh-crypto.c | 100 +++++++++++++++++++++++++++++++--------- 1 file changed, 79 insertions(+), 21 deletions(-) diff --git a/unit/test-mesh-crypto.c b/unit/test-mesh-crypto.c index f9b7d81da..ff6e653a7 100644 --- a/unit/test-mesh-crypto.c +++ b/unit/test-mesh-crypto.c @@ -633,6 +633,36 @@ static const struct mesh_crypto_test s8_4_3 = { .beacon = "01003ecaff672f673370123456788ea261582f364f6f", }; +static const struct mesh_crypto_test s8_4_6_1 = { + .name = "8.4.6.1 Private Beacon IVU", + + .net_key = "f7a2a44f8e8a8029064f173ddc1e2b00", + .iv_index = 0x1010abcd, + + .enc_key = "6be76842460b2d3a5850d4698409f1bb", + .rand = "435f18f85cf78a3121f58478a5", + + .beacon_type = 0x02, + .beacon_flags = 0x02, + .beacon_cmac = "f3174f022a514741", + .beacon = "02435f18f85cf78a3121f58478a561e488e7cbf3174f022a514741", +}; + +static const struct mesh_crypto_test s8_4_6_2 = { + .name = "8.4.6.2 Private Beacon IVU Complete", + + .net_key = "3bbb6f1fbd53e157417f308ce7aec58f", + .iv_index = 0x00000000, + + .enc_key = "ca478cdac626b7a8522d7272dd124f26", + .rand = "1b998f82927535ea6f3076f422", + + .beacon_type = 0x02, + .beacon_flags = 0x00, + .beacon_cmac = "2f0ffb94cf97f881", + .beacon = "021b998f82927535ea6f3076f422ce827408ab2f0ffb94cf97f881", +}; + static const struct mesh_crypto_test s8_6_2 = { .name = "8.6.2 Service Data using Node Identity", @@ -926,7 +956,7 @@ static void check_encrypt(const struct mesh_crypto_test *keys) uint8_t *dev_key; uint8_t *app_key; uint8_t *net_key; - uint8_t nid; + uint8_t nid = 0; uint8_t enc_key[16]; uint8_t priv_key[16]; uint8_t net_nonce[13]; @@ -960,8 +990,7 @@ static void check_encrypt(const struct mesh_crypto_test *keys) show_data("NetworkKey", 0, net_key, 16); - if (keys->akf) { - mesh_crypto_k4(app_key, &key_aid); + if (keys->akf && mesh_crypto_k4(app_key, &key_aid)) { key_aid |= KEY_ID_AKF; } else { key_aid = 0; @@ -1265,7 +1294,8 @@ static void check_decrypt_segment(const struct mesh_crypto_test *keys, uint8_t net_clr[29]; uint64_t net_mic64, calc_net_mic64; uint32_t hdr, net_mic32, calc_net_mic32; - bool ctl, segmented, relay, szmic, key_akf; + bool ctl = false; + bool segmented, relay, szmic, key_akf; uint8_t ttl, opcode, key_aid, segO, segN; uint32_t seq; uint16_t src, dst, seqZero; @@ -1416,7 +1446,8 @@ static void check_decrypt(const struct mesh_crypto_test *keys) uint16_t app_msg_len = 0; uint32_t calc_net_mic32, net_mic32 = 0; uint64_t calc_net_mic64, net_mic64 = 0; - bool net_ctl, net_segmented, net_rly, net_akf; + bool net_ctl = false; + bool net_segmented, net_rly, net_akf; uint8_t net_aid, net_ttl, nid, net_segO, net_segN = 0; uint32_t net_seq, hdr, seqZero = 0; uint16_t net_src, net_dst; @@ -1731,42 +1762,67 @@ static void check_beacon(const struct mesh_crypto_test *keys) { uint8_t *net_key; uint8_t *beacon_cmac; - uint8_t beacon[22]; + uint8_t *random = NULL; + uint8_t beacon[29]; uint8_t enc_key[16]; uint8_t net_id[8]; uint8_t cmac[8]; - uint64_t cmac_tmp; + uint64_t cmac_tmp = 0; + + if (keys->beacon_type < 1 || keys->beacon_type > 2) + verify_uint8("Unknown Beacon", 0, true, + (keys->beacon_type >= 1 || keys->beacon_type <= 2)); net_key = l_util_from_hexstring(keys->net_key, NULL); beacon_cmac = l_util_from_hexstring(keys->beacon_cmac, NULL); - mesh_crypto_nkbk(net_key, enc_key); + if (keys->beacon_type == 1) { + mesh_crypto_nkbk(net_key, enc_key); + } else { + mesh_crypto_nkpk(net_key, enc_key); + random = l_util_from_hexstring(keys->rand, NULL); + } + mesh_crypto_k3(net_key, net_id); l_info(COLOR_BLUE "[%s]" COLOR_OFF, keys->name); verify_data("NetworkKey", 0, keys->net_key, net_key, 16); + show_uint8("Beacon Flags", 0, keys->beacon_flags); show_uint32("IVindex", 0, keys->iv_index); verify_data("BeaconKey", 0, keys->enc_key, enc_key, 16); - verify_data("NetworkID", 0, keys->net_id, net_id, 8); beacon[0] = keys->beacon_type; - beacon[1] = keys->beacon_flags; - memcpy(beacon + 2, net_id, 8); - l_put_be32(keys->iv_index, beacon + 10); - mesh_crypto_beacon_cmac(enc_key, net_id, keys->iv_index, - !!(keys->beacon_flags & 0x01), - !!(keys->beacon_flags & 0x02), - &cmac_tmp); - - l_put_be64(cmac_tmp, cmac); - l_put_be64(cmac_tmp, beacon + 14); - verify_data("BeaconCMAC", 0, keys->beacon_cmac, cmac, 8); - verify_data("Beacon", 0, keys->beacon, beacon, sizeof(beacon)); + if (keys->beacon_type == 1) { + verify_data("NetworkID", 0, keys->net_id, net_id, 8); + beacon[1] = keys->beacon_flags; + memcpy(beacon + 2, net_id, 8); + l_put_be32(keys->iv_index, beacon + 10); + mesh_crypto_beacon_cmac(enc_key, net_id, keys->iv_index, + !!(keys->beacon_flags & 0x01), + !!(keys->beacon_flags & 0x02), + &cmac_tmp); + + l_put_be64(cmac_tmp, cmac); + l_put_be64(cmac_tmp, beacon + 14); + verify_data("BeaconCMAC", 0, keys->beacon_cmac, cmac, 8); + verify_data("SNBeacon", 0, keys->beacon, beacon, 22); + } else { + show_data("Random", 0, random, sizeof(random)); + beacon[14] = keys->beacon_flags; + l_put_be32(keys->iv_index, beacon + 15); + mesh_crypto_aes_ccm_encrypt(random, enc_key, NULL, 0, + beacon + 14, 5, + beacon + 14, NULL, 8); + memcpy(beacon + 1, random, 13); + verify_data("BeaconMIC", 0, keys->beacon_cmac, beacon + 19, 8); + verify_data("PrivBeacon", 0, keys->beacon, beacon, 27); + } l_info(""); + l_free(random); l_free(beacon_cmac); l_free(net_key); } @@ -2071,6 +2127,8 @@ int main(int argc, char *argv[]) /* Section 8.4 Beacon Sample Data */ check_beacon(&s8_4_3); + check_beacon(&s8_4_6_1); + check_beacon(&s8_4_6_2); /* Section 8.6 Mesh Proxy Service sample data */ check_id_beacon(&s8_6_2);