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ProtoPirate/protocols/kia_v6.c
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RocketGod 11253a9f81 Fix memory issues and crashes
2026-01-30 17:12:54 -08:00

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#include "kia_v6.h"
#include "../protopirate_app_i.h"
#include "keys.h"
#include <furi.h>
#include <string.h>
#define TAG "KiaV6"
#define KIA_V6_XOR_MASK_LOW 0x84AF25FB
#define KIA_V6_XOR_MASK_HIGH 0x638766AB
static const SubGhzBlockConst kia_protocol_v6_const = {
.te_short = 200,
.te_long = 400,
.te_delta = 100,
.min_count_bit_for_found = 144,
};
static const uint8_t aes_sbox[256] = {
0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5, 0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab,
0x76, 0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0, 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4,
0x72, 0xc0, 0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc, 0x34, 0xa5, 0xe5, 0xf1, 0x71,
0xd8, 0x31, 0x15, 0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a, 0x07, 0x12, 0x80, 0xe2,
0xeb, 0x27, 0xb2, 0x75, 0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0, 0x52, 0x3b, 0xd6,
0xb3, 0x29, 0xe3, 0x2f, 0x84, 0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b, 0x6a, 0xcb,
0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf, 0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85, 0x45,
0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8, 0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5,
0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2, 0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44,
0x17, 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73, 0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a,
0x90, 0x88, 0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb, 0xe0, 0x32, 0x3a, 0x0a, 0x49,
0x06, 0x24, 0x5c, 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79, 0xe7, 0xc8, 0x37, 0x6d,
0x8d, 0xd5, 0x4e, 0xa9, 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08, 0xba, 0x78, 0x25,
0x2e, 0x1c, 0xa6, 0xb4, 0xc6, 0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a, 0x70, 0x3e,
0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e, 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e, 0xe1,
0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94, 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf,
0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68, 0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb,
0x16};
static const uint8_t aes_sbox_inv[256] = {
0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38, 0xbf, 0x40, 0xa3, 0x9e, 0x81, 0xf3, 0xd7,
0xfb, 0x7c, 0xe3, 0x39, 0x82, 0x9b, 0x2f, 0xff, 0x87, 0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde,
0xe9, 0xcb, 0x54, 0x7b, 0x94, 0x32, 0xa6, 0xc2, 0x23, 0x3d, 0xee, 0x4c, 0x95, 0x0b, 0x42,
0xfa, 0xc3, 0x4e, 0x08, 0x2e, 0xa1, 0x66, 0x28, 0xd9, 0x24, 0xb2, 0x76, 0x5b, 0xa2, 0x49,
0x6d, 0x8b, 0xd1, 0x25, 0x72, 0xf8, 0xf6, 0x64, 0x86, 0x68, 0x98, 0x16, 0xd4, 0xa4, 0x5c,
0xcc, 0x5d, 0x65, 0xb6, 0x92, 0x6c, 0x70, 0x48, 0x50, 0xfd, 0xed, 0xb9, 0xda, 0x5e, 0x15,
0x46, 0x57, 0xa7, 0x8d, 0x9d, 0x84, 0x90, 0xd8, 0xab, 0x00, 0x8c, 0xbc, 0xd3, 0x0a, 0xf7,
0xe4, 0x58, 0x05, 0xb8, 0xb3, 0x45, 0x06, 0xd0, 0x2c, 0x1e, 0x8f, 0xca, 0x3f, 0x0f, 0x02,
0xc1, 0xaf, 0xbd, 0x03, 0x01, 0x13, 0x8a, 0x6b, 0x3a, 0x91, 0x11, 0x41, 0x4f, 0x67, 0xdc,
0xea, 0x97, 0xf2, 0xcf, 0xce, 0xf0, 0xb4, 0xe6, 0x73, 0x96, 0xac, 0x74, 0x22, 0xe7, 0xad,
0x35, 0x85, 0xe2, 0xf9, 0x37, 0xe8, 0x1c, 0x75, 0xdf, 0x6e, 0x47, 0xf1, 0x1a, 0x71, 0x1d,
0x29, 0xc5, 0x89, 0x6f, 0xb7, 0x62, 0x0e, 0xaa, 0x18, 0xbe, 0x1b, 0xfc, 0x56, 0x3e, 0x4b,
0xc6, 0xd2, 0x79, 0x20, 0x9a, 0xdb, 0xc0, 0xfe, 0x78, 0xcd, 0x5a, 0xf4, 0x1f, 0xdd, 0xa8,
0x33, 0x88, 0x07, 0xc7, 0x31, 0xb1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xec, 0x5f, 0x60, 0x51,
0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d, 0x2d, 0xe5, 0x7a, 0x9f, 0x93, 0xc9, 0x9c, 0xef, 0xa0,
0xe0, 0x3b, 0x4d, 0xae, 0x2a, 0xf5, 0xb0, 0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61,
0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26, 0xe1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0c,
0x7d};
static const uint8_t aes_rcon[10] = {0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36};
struct SubGhzProtocolDecoderKiaV6 {
SubGhzProtocolDecoderBase base;
SubGhzBlockDecoder decoder;
SubGhzBlockGeneric generic;
uint16_t header_count;
ManchesterState manchester_state;
uint32_t data_part1_low;
uint32_t data_part1_high;
uint32_t stored_part1_low;
uint32_t stored_part1_high;
uint32_t stored_part2_low;
uint32_t stored_part2_high;
uint16_t data_part3;
uint8_t bit_count;
uint8_t fx_field;
uint8_t crc1_field;
uint8_t crc2_field;
bool keys_loaded;
};
struct SubGhzProtocolEncoderKiaV6 {
SubGhzProtocolEncoderBase base;
SubGhzProtocolBlockEncoder encoder;
SubGhzBlockGeneric generic;
};
typedef enum {
KiaV6DecoderStepReset = 0,
KiaV6DecoderStepWaitFirstHigh,
KiaV6DecoderStepCountPreamble,
KiaV6DecoderStepWaitLongHigh,
KiaV6DecoderStepData,
} KiaV6DecoderStep;
const SubGhzProtocolDecoder kia_protocol_v6_decoder = {
.alloc = kia_protocol_decoder_v6_alloc,
.free = kia_protocol_decoder_v6_free,
.feed = kia_protocol_decoder_v6_feed,
.reset = kia_protocol_decoder_v6_reset,
.get_hash_data = kia_protocol_decoder_v6_get_hash_data,
.serialize = kia_protocol_decoder_v6_serialize,
.deserialize = kia_protocol_decoder_v6_deserialize,
.get_string = kia_protocol_decoder_v6_get_string,
};
const SubGhzProtocolEncoder kia_protocol_v6_encoder = {
.alloc = NULL,
.free = NULL,
.deserialize = NULL,
.stop = NULL,
.yield = NULL,
};
const SubGhzProtocol kia_protocol_v6 = {
.name = KIA_PROTOCOL_V6_NAME,
.type = SubGhzProtocolTypeDynamic,
.flag = SubGhzProtocolFlag_433 | SubGhzProtocolFlag_FM | SubGhzProtocolFlag_Decodable |
SubGhzProtocolFlag_Save | SubGhzProtocolFlag_Load,
.decoder = &kia_protocol_v6_decoder,
.encoder = &kia_protocol_v6_encoder,
};
static uint8_t kia_v6_crc8(uint8_t* data, int len, uint8_t init, uint8_t polynomial) {
uint8_t crc = init;
uint8_t* pbVar3 = data;
while(pbVar3 != data + len) {
crc = crc ^ *pbVar3;
for(int j = 8; j > 0; j--) {
uint8_t bVar1 = (uint8_t)(crc << 1);
if((crc & 0x80) != 0) {
bVar1 = bVar1 ^ polynomial;
}
crc = bVar1;
}
pbVar3++;
}
return crc;
}
static uint8_t gf_mul2(uint8_t x) {
return ((x >> 7) * 0x1b) ^ (x << 1);
}
static void aes_subbytes_inv(uint8_t* state) {
for(int row = 0; row < 4; row++) {
for(int col = 0; col < 4; col++) {
state[row + col * 4] = aes_sbox_inv[state[row + col * 4]];
}
}
}
static void aes_shiftrows_inv(uint8_t* state) {
uint8_t temp;
temp = state[13];
state[13] = state[9];
state[9] = state[5];
state[5] = state[1];
state[1] = temp;
temp = state[2];
state[2] = state[10];
state[10] = temp;
temp = state[6];
state[6] = state[14];
state[14] = temp;
temp = state[3];
state[3] = state[7];
state[7] = state[11];
state[11] = state[15];
state[15] = temp;
}
static void aes_mixcolumns_inv(uint8_t* state) {
uint8_t a, b, c, d;
for(int i = 0; i < 4; i++) {
a = state[i * 4];
b = state[i * 4 + 1];
c = state[i * 4 + 2];
d = state[i * 4 + 3];
uint8_t a2 = gf_mul2(a);
uint8_t a4 = gf_mul2(a2);
uint8_t a8 = gf_mul2(a4);
uint8_t b2 = gf_mul2(b);
uint8_t b4 = gf_mul2(b2);
uint8_t b8 = gf_mul2(b4);
uint8_t c2 = gf_mul2(c);
uint8_t c4 = gf_mul2(c2);
uint8_t c8 = gf_mul2(c4);
uint8_t d2 = gf_mul2(d);
uint8_t d4 = gf_mul2(d2);
uint8_t d8 = gf_mul2(d4);
state[i * 4] = (a8 ^ a4 ^ a2) ^ (b8 ^ b2 ^ b) ^ (c8 ^ c4 ^ c) ^ (d8 ^ d);
state[i * 4 + 1] = (a8 ^ a) ^ (b8 ^ b4 ^ b2) ^ (c8 ^ c2 ^ c) ^ (d8 ^ d4 ^ d);
state[i * 4 + 2] = (a8 ^ a4 ^ a) ^ (b8 ^ b) ^ (c8 ^ c4 ^ c2) ^ (d8 ^ d2 ^ d);
state[i * 4 + 3] = (a8 ^ a2 ^ a) ^ (b8 ^ b4 ^ b) ^ (c8 ^ c) ^ (d8 ^ d4 ^ d2);
}
}
static void aes_addroundkey(uint8_t* state, const uint8_t* round_key) {
for(int col = 0; col < 4; col++) {
state[col * 4] ^= round_key[col * 4];
state[col * 4 + 1] ^= round_key[col * 4 + 1];
state[col * 4 + 2] ^= round_key[col * 4 + 2];
state[col * 4 + 3] ^= round_key[col * 4 + 3];
}
}
static void aes_key_expansion(const uint8_t* key, uint8_t* round_keys) {
for(int i = 0; i < 16; i++) {
round_keys[i] = key[i];
}
for(int i = 4; i < 44; i++) {
int prev_word_idx = (i - 1) * 4;
uint8_t b0 = round_keys[prev_word_idx];
uint8_t b1 = round_keys[prev_word_idx + 1];
uint8_t b2 = round_keys[prev_word_idx + 2];
uint8_t b3 = round_keys[prev_word_idx + 3];
if((i % 4) == 0) {
uint8_t new_b0 = aes_sbox[b1] ^ aes_rcon[(i / 4) - 1];
uint8_t new_b1 = aes_sbox[b2];
uint8_t new_b2 = aes_sbox[b3];
uint8_t new_b3 = aes_sbox[b0];
b0 = new_b0;
b1 = new_b1;
b2 = new_b2;
b3 = new_b3;
}
int back_word_idx = (i - 4) * 4;
b0 ^= round_keys[back_word_idx];
b1 ^= round_keys[back_word_idx + 1];
b2 ^= round_keys[back_word_idx + 2];
b3 ^= round_keys[back_word_idx + 3];
int curr_word_idx = i * 4;
round_keys[curr_word_idx] = b0;
round_keys[curr_word_idx + 1] = b1;
round_keys[curr_word_idx + 2] = b2;
round_keys[curr_word_idx + 3] = b3;
}
}
static void aes128_decrypt(const uint8_t* expanded_key, uint8_t* data) {
uint8_t state[16];
memcpy(state, data, 16);
aes_addroundkey(state, &expanded_key[160]);
for(int round = 9; round > 0; round--) {
aes_shiftrows_inv(state);
aes_subbytes_inv(state);
aes_addroundkey(state, &expanded_key[round * 16]);
aes_mixcolumns_inv(state);
}
aes_shiftrows_inv(state);
aes_subbytes_inv(state);
aes_addroundkey(state, &expanded_key[0]);
memcpy(data, state, 16);
}
static void get_kia_v6_aes_key(uint8_t* aes_key) {
uint64_t keystore_a = get_kia_v6_keystore_a();
uint32_t keystore_a_hi = (keystore_a >> 32) & 0xFFFFFFFF;
uint32_t keystore_a_lo = keystore_a & 0xFFFFFFFF;
uint32_t uVar15_a = keystore_a_lo ^ KIA_V6_XOR_MASK_LOW; // low part
uint32_t uVar5_a = KIA_V6_XOR_MASK_HIGH ^ keystore_a_hi; // high part
uint64_t val64_a = ((uint64_t)uVar5_a << 32) | uVar15_a;
for(int i = 0; i < 8; i++) {
aes_key[i] = (val64_a >> (56 - i * 8)) & 0xFF;
}
uint64_t keystore_b = get_kia_v6_keystore_b();
uint32_t keystore_b_hi = (keystore_b >> 32) & 0xFFFFFFFF;
uint32_t keystore_b_lo = keystore_b & 0xFFFFFFFF;
uint32_t uVar15_b = keystore_b_lo ^ KIA_V6_XOR_MASK_LOW;
uint32_t uVar5_b = KIA_V6_XOR_MASK_HIGH ^ keystore_b_hi;
uint64_t val64_b = ((uint64_t)uVar5_b << 32) | uVar15_b;
for(int i = 0; i < 8; i++) {
aes_key[i + 8] = (val64_b >> (56 - i * 8)) & 0xFF;
}
}
static bool kia_v6_decrypt(SubGhzProtocolDecoderKiaV6* instance) {
uint8_t encrypted_data[16];
encrypted_data[0] = (instance->stored_part1_high >> 8) & 0xFF;
encrypted_data[1] = instance->stored_part1_high & 0xFF;
encrypted_data[2] = (instance->stored_part1_low >> 24) & 0xFF;
encrypted_data[3] = (instance->stored_part1_low >> 16) & 0xFF;
encrypted_data[4] = (instance->stored_part1_low >> 8) & 0xFF;
encrypted_data[5] = instance->stored_part1_low & 0xFF;
encrypted_data[6] = (instance->stored_part2_high >> 24) & 0xFF;
encrypted_data[7] = (instance->stored_part2_high >> 16) & 0xFF;
encrypted_data[8] = (instance->stored_part2_high >> 8) & 0xFF;
encrypted_data[9] = instance->stored_part2_high & 0xFF;
encrypted_data[10] = (instance->stored_part2_low >> 24) & 0xFF;
encrypted_data[11] = (instance->stored_part2_low >> 16) & 0xFF;
encrypted_data[12] = (instance->stored_part2_low >> 8) & 0xFF;
encrypted_data[13] = instance->stored_part2_low & 0xFF;
encrypted_data[14] = (instance->data_part3 >> 8) & 0xFF;
encrypted_data[15] = instance->data_part3 & 0xFF;
uint8_t fx_byte0 = (instance->stored_part1_high >> 24) & 0xFF;
uint8_t fx_byte1 = (instance->stored_part1_high >> 16) & 0xFF;
instance->fx_field = ((fx_byte0 & 0xF) << 4) | (fx_byte1 & 0xF);
uint8_t aes_key[16];
get_kia_v6_aes_key(aes_key);
uint8_t expanded_key[176];
aes_key_expansion(aes_key, expanded_key);
aes128_decrypt(expanded_key, encrypted_data);
uint8_t* decrypted = encrypted_data;
uint8_t calculated_crc = kia_v6_crc8(decrypted, 15, 0xFF, 0x07);
uint8_t stored_crc = decrypted[15];
// Serial: bytes 4-6 as 24-bit big-endian
instance->generic.serial = ((uint32_t)decrypted[4] << 16) | ((uint32_t)decrypted[5] << 8) |
decrypted[6];
instance->generic.btn = decrypted[7];
instance->generic.cnt = ((uint32_t)decrypted[8] << 24) | ((uint32_t)decrypted[9] << 16) |
((uint32_t)decrypted[10] << 8) | decrypted[11];
instance->crc1_field = decrypted[12];
instance->crc2_field = decrypted[15];
return (calculated_crc ^ stored_crc) < 2;
}
void* kia_protocol_decoder_v6_alloc(SubGhzEnvironment* environment) {
UNUSED(environment);
SubGhzProtocolDecoderKiaV6* instance = malloc(sizeof(SubGhzProtocolDecoderKiaV6));
memset(instance, 0, sizeof(SubGhzProtocolDecoderKiaV6));
instance->base.protocol = &kia_protocol_v6;
instance->generic.protocol_name = instance->base.protocol->name;
return instance;
}
void kia_protocol_decoder_v6_free(void* context) {
furi_assert(context);
SubGhzProtocolDecoderKiaV6* instance = context;
free(instance);
}
void kia_protocol_decoder_v6_reset(void* context) {
furi_assert(context);
SubGhzProtocolDecoderKiaV6* instance = context;
instance->decoder.parser_step = KiaV6DecoderStepReset;
manchester_advance(
instance->manchester_state, ManchesterEventReset, &instance->manchester_state, NULL);
}
void kia_protocol_decoder_v6_feed(void* context, bool level, uint32_t duration) {
furi_assert(context);
SubGhzProtocolDecoderKiaV6* instance = context;
uint32_t uVar4, uVar5;
ManchesterEvent event;
bool data_bit;
uint8_t bit_count_inc;
uint32_t step_value;
switch(instance->decoder.parser_step) {
case KiaV6DecoderStepReset: // case 0
if(level == 0) {
return;
}
if(DURATION_DIFF(duration, kia_protocol_v6_const.te_short) <
kia_protocol_v6_const.te_delta) {
instance->decoder.parser_step = KiaV6DecoderStepWaitFirstHigh;
instance->decoder.te_last = duration;
instance->header_count = 0;
manchester_advance(
instance->manchester_state,
ManchesterEventReset,
&instance->manchester_state,
NULL);
}
return;
case KiaV6DecoderStepWaitFirstHigh: // case 1
if(level != 0) {
return;
}
uint32_t diff_short = DURATION_DIFF(duration, kia_protocol_v6_const.te_short);
uint32_t diff_long = DURATION_DIFF(duration, kia_protocol_v6_const.te_long);
uint32_t diff = (diff_long < diff_short) ? diff_long : diff_short;
if(diff_long < kia_protocol_v6_const.te_delta && diff_long < diff_short) {
if(instance->header_count >= 0x259) { // 601 decimal
instance->header_count = 0;
instance->decoder.te_last = duration;
instance->decoder.parser_step = KiaV6DecoderStepWaitLongHigh;
return;
}
}
if(diff >= kia_protocol_v6_const.te_delta) {
step_value = KiaV6DecoderStepReset;
goto LAB_reset;
}
if(DURATION_DIFF(instance->decoder.te_last, kia_protocol_v6_const.te_short) <
kia_protocol_v6_const.te_delta) {
instance->decoder.te_last = duration;
instance->header_count++;
return;
} else {
step_value = KiaV6DecoderStepReset;
goto LAB_reset;
}
case KiaV6DecoderStepWaitLongHigh: // case 2
if(level == 0) {
step_value = KiaV6DecoderStepReset;
goto LAB_reset;
}
uint32_t diff_long_check = DURATION_DIFF(duration, kia_protocol_v6_const.te_long);
uint32_t diff_short_check = DURATION_DIFF(duration, kia_protocol_v6_const.te_short);
if(diff_long_check >= kia_protocol_v6_const.te_delta) {
if(diff_short_check >= kia_protocol_v6_const.te_delta) {
step_value = KiaV6DecoderStepReset;
goto LAB_reset;
}
}
if(DURATION_DIFF(instance->decoder.te_last, kia_protocol_v6_const.te_long) >=
kia_protocol_v6_const.te_delta) {
step_value = KiaV6DecoderStepReset;
goto LAB_reset;
}
instance->decoder.decode_data = 0;
instance->decoder.decode_count_bit = 0;
subghz_protocol_blocks_add_bit(&instance->decoder, 1);
subghz_protocol_blocks_add_bit(&instance->decoder, 1);
subghz_protocol_blocks_add_bit(&instance->decoder, 0);
subghz_protocol_blocks_add_bit(&instance->decoder, 1);
instance->data_part1_low = (uint32_t)(instance->decoder.decode_data & 0xFFFFFFFF);
instance->data_part1_high = (uint32_t)((instance->decoder.decode_data >> 32) & 0xFFFFFFFF);
instance->bit_count = instance->decoder.decode_count_bit;
instance->decoder.parser_step = KiaV6DecoderStepData;
return;
case KiaV6DecoderStepData: // case 3
if(DURATION_DIFF(duration, kia_protocol_v6_const.te_short) <
kia_protocol_v6_const.te_delta) {
event = (level & 0x7F) << 1;
goto manchester_process;
} else if(
DURATION_DIFF(duration, kia_protocol_v6_const.te_long) <
kia_protocol_v6_const.te_delta) {
event = level ? 6 : 4;
goto manchester_process;
}
step_value = KiaV6DecoderStepReset;
goto LAB_reset;
manchester_process:
if(manchester_advance(
instance->manchester_state, event, &instance->manchester_state, &data_bit)) {
uVar4 = instance->data_part1_low;
uVar5 = (uVar4 << 1) | (data_bit ? 1 : 0);
uint32_t carry = (uVar4 >> 31) & 1;
uVar4 = (instance->data_part1_high << 1) | carry;
instance->data_part1_low = uVar5;
instance->data_part1_high = uVar4;
instance->decoder.decode_data = ((uint64_t)uVar4 << 32) | uVar5;
bit_count_inc = instance->bit_count + 1;
instance->bit_count = bit_count_inc;
if(bit_count_inc == 0x40) {
instance->stored_part1_low = ~uVar5;
instance->stored_part1_high = ~uVar4;
instance->data_part1_low = 0;
instance->data_part1_high = 0;
} else if(bit_count_inc == 0x80) {
instance->stored_part2_low = ~uVar5;
instance->stored_part2_high = ~uVar4;
instance->data_part1_low = 0;
instance->data_part1_high = 0;
}
}
instance->decoder.te_last = duration;
if(instance->bit_count != kia_protocol_v6_const.min_count_bit_for_found) {
return;
}
instance->generic.data_count_bit = kia_protocol_v6_const.min_count_bit_for_found;
instance->data_part3 = ~((uint16_t)instance->data_part1_low);
kia_v6_decrypt(instance);
if(instance->base.callback) {
instance->base.callback(&instance->base, instance->base.context);
}
instance->data_part1_low = 0;
instance->data_part1_high = 0;
instance->bit_count = 0;
step_value = KiaV6DecoderStepReset;
goto LAB_reset;
default:
return;
}
LAB_reset:
instance->decoder.parser_step = step_value;
return;
}
uint8_t kia_protocol_decoder_v6_get_hash_data(void* context) {
furi_assert(context);
SubGhzProtocolDecoderKiaV6* instance = context;
uint8_t hash = 0;
uint8_t* data = (uint8_t*)&instance->data_part1_low;
size_t data_size = (instance->bit_count + 7) / 8;
size_t max_size = (kia_protocol_v6_const.min_count_bit_for_found + 7) / 8;
if(data_size > max_size) {
data_size = max_size;
}
for(size_t i = 0; i < data_size; i++) {
hash ^= data[i];
}
return hash;
}
SubGhzProtocolStatus kia_protocol_decoder_v6_serialize(
void* context,
FlipperFormat* flipper_format,
SubGhzRadioPreset* preset) {
furi_assert(context);
SubGhzProtocolDecoderKiaV6* instance = context;
SubGhzProtocolStatus ret = SubGhzProtocolStatusError;
do {
if(!flipper_format_write_uint32(flipper_format, "Frequency", &preset->frequency, 1)) break;
if(!flipper_format_write_string_cstr(
flipper_format, "Preset", furi_string_get_cstr(preset->name)))
break;
if(!flipper_format_write_string_cstr(
flipper_format, "Protocol", instance->generic.protocol_name))
break;
uint32_t bits = kia_protocol_v6_const.min_count_bit_for_found;
if(!flipper_format_write_uint32(flipper_format, "Bit", &bits, 1)) break;
uint64_t key_data = ((uint64_t)instance->stored_part1_high << 32) |
instance->stored_part1_low;
char key_str[20];
snprintf(key_str, sizeof(key_str), "%016llX", key_data);
if(!flipper_format_write_string_cstr(flipper_format, "Key", key_str)) break;
uint32_t serial = instance->generic.serial;
if(!flipper_format_write_uint32(flipper_format, "Serial", &serial, 1)) break;
uint32_t btn = instance->generic.btn;
if(!flipper_format_write_uint32(flipper_format, "Btn", &btn, 1)) break;
uint32_t cnt = instance->generic.cnt;
if(!flipper_format_write_uint32(flipper_format, "Cnt", &cnt, 1)) break;
uint32_t key2_low = instance->stored_part2_low;
if(!flipper_format_write_uint32(flipper_format, "Key_2", &key2_low, 1)) break;
uint32_t key2_high = instance->stored_part2_high;
if(!flipper_format_write_uint32(flipper_format, "Key_3", &key2_high, 1)) break;
uint32_t key3 = instance->data_part3;
if(!flipper_format_write_uint32(flipper_format, "Key_4", &key3, 1)) break;
ret = SubGhzProtocolStatusOk;
} while(false);
return ret;
}
SubGhzProtocolStatus
kia_protocol_decoder_v6_deserialize(void* context, FlipperFormat* flipper_format) {
furi_assert(context);
SubGhzProtocolDecoderKiaV6* instance = context;
SubGhzProtocolStatus ret = SubGhzProtocolStatusError;
do {
if(!subghz_block_generic_deserialize_check_count_bit(
&instance->generic, flipper_format, kia_protocol_v6_const.min_count_bit_for_found)) {
break;
}
FuriString* temp_str = furi_string_alloc();
if(!flipper_format_read_string(flipper_format, "Key", temp_str)) {
furi_string_free(temp_str);
break;
}
const char* key_str = furi_string_get_cstr(temp_str);
uint64_t key = 0;
size_t str_len = strlen(key_str);
size_t hex_pos = 0;
for(size_t i = 0; i < str_len && hex_pos < 16; i++) {
char c = key_str[i];
if(c == ' ') continue;
uint8_t nibble;
if(c >= '0' && c <= '9') {
nibble = c - '0';
} else if(c >= 'A' && c <= 'F') {
nibble = c - 'A' + 10;
} else if(c >= 'a' && c <= 'f') {
nibble = c - 'a' + 10;
} else {
furi_string_free(temp_str);
break;
}
key = (key << 4) | nibble;
hex_pos++;
}
instance->stored_part1_low = (uint32_t)(key & 0xFFFFFFFF);
instance->stored_part1_high = (uint32_t)((key >> 32) & 0xFFFFFFFF);
uint32_t temp;
if(flipper_format_read_uint32(flipper_format, "Key_2", &temp, 1)) {
instance->stored_part2_low = temp;
}
if(flipper_format_read_uint32(flipper_format, "Key_3", &temp, 1)) {
instance->stored_part2_high = temp;
}
if(flipper_format_read_uint32(flipper_format, "Key_4", &temp, 1)) {
instance->data_part3 = (uint16_t)temp;
}
if(flipper_format_read_uint32(flipper_format, "Serial", &temp, 1)) {
instance->generic.serial = temp;
}
if(flipper_format_read_uint32(flipper_format, "Btn", &temp, 1)) {
instance->generic.btn = (uint8_t)temp;
}
if(flipper_format_read_uint32(flipper_format, "Cnt", &temp, 1)) {
instance->generic.cnt = (uint16_t)temp;
}
furi_string_free(temp_str);
ret = SubGhzProtocolStatusOk;
} while(false);
return ret;
}
void kia_protocol_decoder_v6_get_string(void* context, FuriString* output) {
furi_assert(context);
SubGhzProtocolDecoderKiaV6* instance = context;
kia_v6_decrypt(instance);
uint32_t key1_hi = instance->stored_part1_high;
uint32_t key1_lo = instance->stored_part1_low;
uint32_t key2_hi = instance->stored_part2_high;
uint32_t key2_lo = instance->stored_part2_low;
uint32_t key2_uVar4 = key2_hi << 16;
uint32_t key2_uVar2 = key2_lo >> 16;
uint32_t key2_uVar1 = key2_hi >> 16;
uint32_t key2_combined = key2_uVar4 | key2_uVar2;
uint32_t key2_uVar3 = key2_lo << 16;
uint32_t key2_second = (instance->data_part3 & 0xFFFF) | key2_uVar3;
uint32_t serial_6 = instance->generic.serial & 0xFFFFFF;
furi_string_printf(
output,
"%s %dbit\r\n"
"%08lX%08lX%04lX\r\n"
"%08lX%08lX Fx:%02X\r\n"
"Ser:%06lX Btn:%01X CRC1:%02X\r\n"
"Cnt:%08lX CRC2:%02X",
instance->generic.protocol_name,
instance->generic.data_count_bit,
key1_hi,
key1_lo,
key2_uVar1,
key2_combined,
key2_second,
instance->fx_field,
serial_6,
instance->generic.btn & 0x0F,
instance->crc1_field,
instance->generic.cnt,
instance->crc2_field);
}
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