#include "secplus_v1.h" #include "../blocks/const.h" #include "../blocks/decoder.h" #include "../blocks/encoder.h" #include "../blocks/generic.h" #include "../blocks/math.h" /* * Help * https://github.com/argilo/secplus * https://github.com/merbanan/rtl_433/blob/master/src/devices/secplus_v1.c */ #define TAG "SubGhzProtocoSecPlus_v1" #define SECPLUS_V1_BIT_ERR -1 //0b0000 #define SECPLUS_V1_BIT_0 0 //0b0001 #define SECPLUS_V1_BIT_1 1 //0b0011 #define SECPLUS_V1_BIT_2 2 //0b0111 #define SECPLUS_V1_PACKET_1_HEADER 0x00 #define SECPLUS_V1_PACKET_2_HEADER 0x02 #define SECPLUS_V1_PACKET_1_INDEX_BASE 0 #define SECPLUS_V1_PACKET_2_INDEX_BASE 21 #define SECPLUS_V1_PACKET_1_ACCEPTED (1 << 0) #define SECPLUS_V1_PACKET_2_ACCEPTED (1 << 1) static const SubGhzBlockConst subghz_protocol_secplus_v1_const = { .te_short = 500, .te_long = 1500, .te_delta = 100, .min_count_bit_for_found = 21, }; struct SubGhzProtocolDecoderSecPlus_v1 { SubGhzProtocolDecoderBase base; SubGhzBlockDecoder decoder; SubGhzBlockGeneric generic; uint8_t packet_accepted; uint8_t base_packet_index; uint8_t data_array[44]; }; struct SubGhzProtocolEncoderSecPlus_v1 { SubGhzProtocolEncoderBase base; SubGhzProtocolBlockEncoder encoder; SubGhzBlockGeneric generic; uint8_t data_array[44]; }; typedef enum { SecPlus_v1DecoderStepReset = 0, SecPlus_v1DecoderStepSearchStartBit, SecPlus_v1DecoderStepSaveDuration, SecPlus_v1DecoderStepDecoderData, } SecPlus_v1DecoderStep; const SubGhzProtocolDecoder subghz_protocol_secplus_v1_decoder = { .alloc = subghz_protocol_decoder_secplus_v1_alloc, .free = subghz_protocol_decoder_secplus_v1_free, .feed = subghz_protocol_decoder_secplus_v1_feed, .reset = subghz_protocol_decoder_secplus_v1_reset, .get_hash_data = subghz_protocol_decoder_secplus_v1_get_hash_data, .serialize = subghz_protocol_decoder_secplus_v1_serialize, .deserialize = subghz_protocol_decoder_secplus_v1_deserialize, .get_string = subghz_protocol_decoder_secplus_v1_get_string, }; const SubGhzProtocolEncoder subghz_protocol_secplus_v1_encoder = { .alloc = subghz_protocol_encoder_secplus_v1_alloc, .free = subghz_protocol_encoder_secplus_v1_free, .deserialize = subghz_protocol_encoder_secplus_v1_deserialize, .stop = subghz_protocol_encoder_secplus_v1_stop, .yield = subghz_protocol_encoder_secplus_v1_yield, }; const SubGhzProtocol subghz_protocol_secplus_v1 = { .name = SUBGHZ_PROTOCOL_SECPLUS_V1_NAME, .type = SubGhzProtocolTypeDynamic, .flag = SubGhzProtocolFlag_315 | SubGhzProtocolFlag_AM | SubGhzProtocolFlag_Decodable | SubGhzProtocolFlag_Load | SubGhzProtocolFlag_Send | SubGhzProtocolFlag_Save, .decoder = &subghz_protocol_secplus_v1_decoder, .encoder = &subghz_protocol_secplus_v1_encoder, }; void* subghz_protocol_encoder_secplus_v1_alloc(SubGhzEnvironment* environment) { UNUSED(environment); SubGhzProtocolEncoderSecPlus_v1* instance = malloc(sizeof(SubGhzProtocolEncoderSecPlus_v1)); instance->base.protocol = &subghz_protocol_secplus_v1; instance->generic.protocol_name = instance->base.protocol->name; instance->encoder.repeat = 10; instance->encoder.size_upload = 128; instance->encoder.upload = malloc(instance->encoder.size_upload * sizeof(LevelDuration)); instance->encoder.is_running = false; return instance; } void subghz_protocol_encoder_secplus_v1_free(void* context) { furi_assert(context); SubGhzProtocolEncoderSecPlus_v1* instance = context; free(instance->encoder.upload); free(instance); } /** * Generating an upload from data. * @param instance Pointer to a SubGhzProtocolEncoderSecPlus_v1 instance * @return true On success */ static bool subghz_protocol_encoder_secplus_v1_get_upload(SubGhzProtocolEncoderSecPlus_v1* instance) { furi_assert(instance); size_t index = 0; size_t size_upload = (instance->generic.data_count_bit * 2); if(size_upload > instance->encoder.size_upload) { FURI_LOG_E(TAG, "Encoder size upload exceeds allocated encoder buffer."); return false; } else { instance->encoder.size_upload = size_upload; } //Send header packet 1 instance->encoder.upload[index++] = level_duration_make( false, (uint32_t)subghz_protocol_secplus_v1_const.te_short * (116 + 3)); instance->encoder.upload[index++] = level_duration_make(true, (uint32_t)subghz_protocol_secplus_v1_const.te_short); //Send data packet 1 for(uint8_t i = SECPLUS_V1_PACKET_1_INDEX_BASE + 1; i < SECPLUS_V1_PACKET_1_INDEX_BASE + 21; i++) { switch(instance->data_array[i]) { case SECPLUS_V1_BIT_0: instance->encoder.upload[index++] = level_duration_make( false, (uint32_t)subghz_protocol_secplus_v1_const.te_short * 3); instance->encoder.upload[index++] = level_duration_make(true, (uint32_t)subghz_protocol_secplus_v1_const.te_short); break; case SECPLUS_V1_BIT_1: instance->encoder.upload[index++] = level_duration_make( false, (uint32_t)subghz_protocol_secplus_v1_const.te_short * 2); instance->encoder.upload[index++] = level_duration_make(true, (uint32_t)subghz_protocol_secplus_v1_const.te_short * 2); break; case SECPLUS_V1_BIT_2: instance->encoder.upload[index++] = level_duration_make(false, (uint32_t)subghz_protocol_secplus_v1_const.te_short); instance->encoder.upload[index++] = level_duration_make(true, (uint32_t)subghz_protocol_secplus_v1_const.te_short * 3); break; default: FURI_LOG_E(TAG, "Encoder error, wrong bit type"); return false; break; } } //Send header packet 2 instance->encoder.upload[index++] = level_duration_make(false, (uint32_t)subghz_protocol_secplus_v1_const.te_short * (116)); instance->encoder.upload[index++] = level_duration_make(true, (uint32_t)subghz_protocol_secplus_v1_const.te_short * 3); //Send data packet 2 for(uint8_t i = SECPLUS_V1_PACKET_2_INDEX_BASE + 1; i < SECPLUS_V1_PACKET_2_INDEX_BASE + 21; i++) { switch(instance->data_array[i]) { case SECPLUS_V1_BIT_0: instance->encoder.upload[index++] = level_duration_make( false, (uint32_t)subghz_protocol_secplus_v1_const.te_short * 3); instance->encoder.upload[index++] = level_duration_make(true, (uint32_t)subghz_protocol_secplus_v1_const.te_short); break; case SECPLUS_V1_BIT_1: instance->encoder.upload[index++] = level_duration_make( false, (uint32_t)subghz_protocol_secplus_v1_const.te_short * 2); instance->encoder.upload[index++] = level_duration_make(true, (uint32_t)subghz_protocol_secplus_v1_const.te_short * 2); break; case SECPLUS_V1_BIT_2: instance->encoder.upload[index++] = level_duration_make(false, (uint32_t)subghz_protocol_secplus_v1_const.te_short); instance->encoder.upload[index++] = level_duration_make(true, (uint32_t)subghz_protocol_secplus_v1_const.te_short * 3); break; default: FURI_LOG_E(TAG, "Encoder error, wrong bit type."); return false; break; } } return true; } /** * Security+ 1.0 message encoding * @param instance SubGhzProtocolEncoderSecPlus_v1* */ static bool subghz_protocol_secplus_v1_encode(SubGhzProtocolEncoderSecPlus_v1* instance) { uint32_t fixed = (instance->generic.data >> 32) & 0xFFFFFFFF; uint32_t rolling = instance->generic.data & 0xFFFFFFFF; uint8_t rolling_array[20] = {0}; uint8_t fixed_array[20] = {0}; uint32_t acc = 0; //increment the counter rolling += 2; //update data instance->generic.data &= 0xFFFFFFFF00000000; instance->generic.data |= rolling; if(rolling > 0xFFFFFFFF) { rolling = 0xE6000000; } if(fixed > 0xCFD41B90) { FURI_LOG_E("TAG", "Encode wrong fixed data"); return false; } rolling = subghz_protocol_blocks_reverse_key(rolling, 32); for(int i = 19; i > -1; i--) { rolling_array[i] = rolling % 3; rolling /= 3; fixed_array[i] = fixed % 3; fixed /= 3; } instance->data_array[SECPLUS_V1_PACKET_1_INDEX_BASE] = SECPLUS_V1_PACKET_1_HEADER; instance->data_array[SECPLUS_V1_PACKET_2_INDEX_BASE] = SECPLUS_V1_PACKET_2_HEADER; //encode packet 1 for(uint8_t i = 1; i < 11; i++) { acc += rolling_array[i - 1]; instance->data_array[i * 2 - 1] = rolling_array[i - 1]; acc += fixed_array[i - 1]; instance->data_array[i * 2] = acc % 3; } acc = 0; //encode packet 2 for(uint8_t i = 11; i < 21; i++) { acc += rolling_array[i - 1]; instance->data_array[i * 2] = rolling_array[i - 1]; acc += fixed_array[i - 1]; instance->data_array[i * 2 + 1] = acc % 3; } return true; } bool subghz_protocol_encoder_secplus_v1_deserialize(void* context, FlipperFormat* flipper_format) { furi_assert(context); SubGhzProtocolEncoderSecPlus_v1* instance = context; bool res = false; do { if(!subghz_block_generic_deserialize(&instance->generic, flipper_format)) { FURI_LOG_E(TAG, "Deserialize error"); break; } if(instance->generic.data_count_bit != 2 * subghz_protocol_secplus_v1_const.min_count_bit_for_found) { FURI_LOG_E(TAG, "Wrong number of bits in key"); break; } //optional parameter parameter flipper_format_read_uint32( flipper_format, "Repeat", (uint32_t*)&instance->encoder.repeat, 1); if(!subghz_protocol_secplus_v1_encode(instance)) { break; } if(!subghz_protocol_encoder_secplus_v1_get_upload(instance)) { break; } uint8_t key_data[sizeof(uint64_t)] = {0}; for(size_t i = 0; i < sizeof(uint64_t); i++) { key_data[sizeof(uint64_t) - i - 1] = (instance->generic.data >> i * 8) & 0xFF; } if(!flipper_format_update_hex(flipper_format, "Key", key_data, sizeof(uint64_t))) { FURI_LOG_E(TAG, "Unable to add Key"); break; } instance->encoder.is_running = true; res = true; } while(false); return res; } void subghz_protocol_encoder_secplus_v1_stop(void* context) { SubGhzProtocolEncoderSecPlus_v1* instance = context; instance->encoder.is_running = false; } LevelDuration subghz_protocol_encoder_secplus_v1_yield(void* context) { SubGhzProtocolEncoderSecPlus_v1* instance = context; if(instance->encoder.repeat == 0 || !instance->encoder.is_running) { instance->encoder.is_running = false; return level_duration_reset(); } LevelDuration ret = instance->encoder.upload[instance->encoder.front]; if(++instance->encoder.front == instance->encoder.size_upload) { instance->encoder.repeat--; instance->encoder.front = 0; } return ret; } void* subghz_protocol_decoder_secplus_v1_alloc(SubGhzEnvironment* environment) { UNUSED(environment); SubGhzProtocolDecoderSecPlus_v1* instance = malloc(sizeof(SubGhzProtocolDecoderSecPlus_v1)); instance->base.protocol = &subghz_protocol_secplus_v1; instance->generic.protocol_name = instance->base.protocol->name; return instance; } void subghz_protocol_decoder_secplus_v1_free(void* context) { furi_assert(context); SubGhzProtocolDecoderSecPlus_v1* instance = context; free(instance); } void subghz_protocol_decoder_secplus_v1_reset(void* context) { furi_assert(context); // SubGhzProtocolDecoderSecPlus_v1* instance = context; // does not reset the decoder because you need to get 2 parts of the package } /** * Security+ 1.0 message decoding * @param instance SubGhzProtocolDecoderSecPlus_v1* */ static void subghz_protocol_secplus_v1_decode(SubGhzProtocolDecoderSecPlus_v1* instance) { uint32_t rolling = 0; uint32_t fixed = 0; uint32_t acc = 0; uint8_t digit = 0; //decode packet 1 for(uint8_t i = 1; i < 21; i += 2) { digit = instance->data_array[i]; rolling = (rolling * 3) + digit; acc += digit; digit = (60 + instance->data_array[i + 1] - acc) % 3; fixed = (fixed * 3) + digit; acc += digit; } acc = 0; //decode packet 2 for(uint8_t i = 22; i < 42; i += 2) { digit = instance->data_array[i]; rolling = (rolling * 3) + digit; acc += digit; digit = (60 + instance->data_array[i + 1] - acc) % 3; fixed = (fixed * 3) + digit; acc += digit; } rolling = subghz_protocol_blocks_reverse_key(rolling, 32); instance->generic.data = (uint64_t)fixed << 32 | rolling; instance->generic.data_count_bit = subghz_protocol_secplus_v1_const.min_count_bit_for_found * 2; } void subghz_protocol_decoder_secplus_v1_feed(void* context, bool level, uint32_t duration) { furi_assert(context); SubGhzProtocolDecoderSecPlus_v1* instance = context; switch(instance->decoder.parser_step) { case SecPlus_v1DecoderStepReset: if((!level) && (DURATION_DIFF(duration, subghz_protocol_secplus_v1_const.te_short * 120) < subghz_protocol_secplus_v1_const.te_delta * 120)) { //Found header Security+ 1.0 instance->decoder.parser_step = SecPlus_v1DecoderStepSearchStartBit; instance->decoder.decode_data = 0; instance->decoder.decode_count_bit = 0; instance->packet_accepted = 0; memset(instance->data_array, 0, sizeof(instance->data_array)); } break; case SecPlus_v1DecoderStepSearchStartBit: if(level) { if(DURATION_DIFF(duration, subghz_protocol_secplus_v1_const.te_short) < subghz_protocol_secplus_v1_const.te_delta) { instance->base_packet_index = SECPLUS_V1_PACKET_1_INDEX_BASE; instance ->data_array[instance->decoder.decode_count_bit + instance->base_packet_index] = SECPLUS_V1_BIT_0; instance->decoder.decode_count_bit++; instance->decoder.parser_step = SecPlus_v1DecoderStepSaveDuration; } else if( DURATION_DIFF(duration, subghz_protocol_secplus_v1_const.te_long) < subghz_protocol_secplus_v1_const.te_delta) { instance->base_packet_index = SECPLUS_V1_PACKET_2_INDEX_BASE; instance ->data_array[instance->decoder.decode_count_bit + instance->base_packet_index] = SECPLUS_V1_BIT_2; instance->decoder.decode_count_bit++; instance->decoder.parser_step = SecPlus_v1DecoderStepSaveDuration; } else { instance->decoder.parser_step = SecPlus_v1DecoderStepReset; } } else { instance->decoder.parser_step = SecPlus_v1DecoderStepReset; } break; case SecPlus_v1DecoderStepSaveDuration: if(!level) { //save interval if(DURATION_DIFF(duration, subghz_protocol_secplus_v1_const.te_short * 120) < subghz_protocol_secplus_v1_const.te_delta * 120) { if(instance->decoder.decode_count_bit == subghz_protocol_secplus_v1_const.min_count_bit_for_found) { if(instance->base_packet_index == SECPLUS_V1_PACKET_1_INDEX_BASE) instance->packet_accepted |= SECPLUS_V1_PACKET_1_ACCEPTED; if(instance->base_packet_index == SECPLUS_V1_PACKET_2_INDEX_BASE) instance->packet_accepted |= SECPLUS_V1_PACKET_2_ACCEPTED; if(instance->packet_accepted == (SECPLUS_V1_PACKET_1_ACCEPTED | SECPLUS_V1_PACKET_2_ACCEPTED)) { subghz_protocol_secplus_v1_decode(instance); if(instance->base.callback) instance->base.callback(&instance->base, instance->base.context); instance->decoder.parser_step = SecPlus_v1DecoderStepReset; } } instance->decoder.parser_step = SecPlus_v1DecoderStepSearchStartBit; instance->decoder.decode_data = 0; instance->decoder.decode_count_bit = 0; } else { instance->decoder.te_last = duration; instance->decoder.parser_step = SecPlus_v1DecoderStepDecoderData; } } else { instance->decoder.parser_step = SecPlus_v1DecoderStepReset; } break; case SecPlus_v1DecoderStepDecoderData: if(level && (instance->decoder.decode_count_bit <= subghz_protocol_secplus_v1_const.min_count_bit_for_found)) { if((DURATION_DIFF( instance->decoder.te_last, subghz_protocol_secplus_v1_const.te_short * 3) < subghz_protocol_secplus_v1_const.te_delta * 3) && (DURATION_DIFF(duration, subghz_protocol_secplus_v1_const.te_short) < subghz_protocol_secplus_v1_const.te_delta)) { instance ->data_array[instance->decoder.decode_count_bit + instance->base_packet_index] = SECPLUS_V1_BIT_0; instance->decoder.decode_count_bit++; instance->decoder.parser_step = SecPlus_v1DecoderStepSaveDuration; } else if( (DURATION_DIFF( instance->decoder.te_last, subghz_protocol_secplus_v1_const.te_short * 2) < subghz_protocol_secplus_v1_const.te_delta * 2) && (DURATION_DIFF(duration, subghz_protocol_secplus_v1_const.te_short * 2) < subghz_protocol_secplus_v1_const.te_delta * 2)) { instance ->data_array[instance->decoder.decode_count_bit + instance->base_packet_index] = SECPLUS_V1_BIT_1; instance->decoder.decode_count_bit++; instance->decoder.parser_step = SecPlus_v1DecoderStepSaveDuration; } else if( (DURATION_DIFF( instance->decoder.te_last, subghz_protocol_secplus_v1_const.te_short) < subghz_protocol_secplus_v1_const.te_delta) && (DURATION_DIFF(duration, subghz_protocol_secplus_v1_const.te_short * 3) < subghz_protocol_secplus_v1_const.te_delta * 3)) { instance ->data_array[instance->decoder.decode_count_bit + instance->base_packet_index] = SECPLUS_V1_BIT_2; instance->decoder.decode_count_bit++; instance->decoder.parser_step = SecPlus_v1DecoderStepSaveDuration; } else { instance->decoder.parser_step = SecPlus_v1DecoderStepReset; } } else { instance->decoder.parser_step = SecPlus_v1DecoderStepReset; } break; } } uint8_t subghz_protocol_decoder_secplus_v1_get_hash_data(void* context) { furi_assert(context); SubGhzProtocolDecoderSecPlus_v1* instance = context; return subghz_protocol_blocks_get_hash_data( &instance->decoder, (instance->decoder.decode_count_bit / 8) + 1); } bool subghz_protocol_decoder_secplus_v1_serialize( void* context, FlipperFormat* flipper_format, SubGhzRadioPreset* preset) { furi_assert(context); SubGhzProtocolDecoderSecPlus_v1* instance = context; return subghz_block_generic_serialize(&instance->generic, flipper_format, preset); } bool subghz_protocol_decoder_secplus_v1_deserialize(void* context, FlipperFormat* flipper_format) { furi_assert(context); SubGhzProtocolDecoderSecPlus_v1* instance = context; bool ret = false; do { if(!subghz_block_generic_deserialize(&instance->generic, flipper_format)) { break; } if(instance->generic.data_count_bit != 2 * subghz_protocol_secplus_v1_const.min_count_bit_for_found) { FURI_LOG_E(TAG, "Wrong number of bits in key"); break; } ret = true; } while(false); return ret; } bool subghz_protocol_secplus_v1_check_fixed(uint32_t fixed) { //uint8_t id0 = (fixed / 3) % 3; uint8_t id1 = (fixed / 9) % 3; uint8_t btn = fixed % 3; do { if(id1 == 0) return false; if(!(btn == 0 || btn == 1 || btn == 2)) return false; } while(false); return true; } void subghz_protocol_decoder_secplus_v1_get_string(void* context, FuriString* output) { furi_assert(context); SubGhzProtocolDecoderSecPlus_v1* instance = context; uint32_t fixed = (instance->generic.data >> 32) & 0xFFFFFFFF; instance->generic.cnt = instance->generic.data & 0xFFFFFFFF; instance->generic.btn = fixed % 3; uint8_t id0 = (fixed / 3) % 3; uint8_t id1 = (fixed / 9) % 3; uint16_t pin = 0; furi_string_cat_printf( output, "%s %db\r\n" "Key:0x%lX%08lX\r\n" "id1:%d id0:%d", instance->generic.protocol_name, instance->generic.data_count_bit, (uint32_t)(instance->generic.data >> 32), (uint32_t)instance->generic.data, id1, id0); if(id1 == 0) { // (fixed // 3**3) % (3**7) 3^3=27 3^73=72187 instance->generic.serial = (fixed / 27) % 2187; // pin = (fixed // 3**10) % (3**9) 3^10=59049 3^9=19683 pin = (fixed / 59049) % 19683; if(pin <= 9999) { furi_string_cat_printf(output, " pin:%d", pin); } else if(10000 <= pin && pin <= 11029) { furi_string_cat_printf(output, " pin:enter"); } int pin_suffix = 0; // pin_suffix = (fixed // 3**19) % 3 3^19=1162261467 pin_suffix = (fixed / 1162261467) % 3; if(pin_suffix == 1) { furi_string_cat_printf(output, " #\r\n"); } else if(pin_suffix == 2) { furi_string_cat_printf(output, " *\r\n"); } else { furi_string_cat_printf(output, "\r\n"); } furi_string_cat_printf( output, "Sn:0x%08lX\r\n" "Cnt:0x%03lX\r\n" "Sw_id:0x%X\r\n", instance->generic.serial, instance->generic.cnt, instance->generic.btn); } else { //id = fixed / 27; instance->generic.serial = fixed / 27; if(instance->generic.btn == 1) { furi_string_cat_printf(output, " Btn:left\r\n"); } else if(instance->generic.btn == 0) { furi_string_cat_printf(output, " Btn:middle\r\n"); } else if(instance->generic.btn == 2) { furi_string_cat_printf(output, " Btn:right\r\n"); } furi_string_cat_printf( output, "Sn:0x%08lX\r\n" "Cnt:0x%03lX\r\n" "Sw_id:0x%X\r\n", instance->generic.serial, instance->generic.cnt, instance->generic.btn); } }