f4a205142d
* Subghz: fix simultaneous detection of Princeton and GateTx * SubGhz: fix phantom frequencies in the Frequency Analyzer
369 lines
13 KiB
C
369 lines
13 KiB
C
#include "nice_flor_s.h"
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#include "../blocks/const.h"
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#include "../blocks/decoder.h"
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#include "../blocks/encoder.h"
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#include "../blocks/generic.h"
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#include "../blocks/math.h"
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/*
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* https://phreakerclub.com/1615
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* https://phreakerclub.com/forum/showthread.php?t=2360
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* https://vrtp.ru/index.php?showtopic=27867
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*/
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#define TAG "SubGhzProtocoNiceFlorS"
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static const SubGhzBlockConst subghz_protocol_nice_flor_s_const = {
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.te_short = 500,
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.te_long = 1000,
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.te_delta = 300,
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.min_count_bit_for_found = 52,
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};
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struct SubGhzProtocolDecoderNiceFlorS {
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SubGhzProtocolDecoderBase base;
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SubGhzBlockDecoder decoder;
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SubGhzBlockGeneric generic;
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const char* nice_flor_s_rainbow_table_file_name;
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};
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struct SubGhzProtocolEncoderNiceFlorS {
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SubGhzProtocolEncoderBase base;
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SubGhzProtocolBlockEncoder encoder;
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SubGhzBlockGeneric generic;
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};
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typedef enum {
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NiceFlorSDecoderStepReset = 0,
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NiceFlorSDecoderStepCheckHeader,
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NiceFlorSDecoderStepFoundHeader,
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NiceFlorSDecoderStepSaveDuration,
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NiceFlorSDecoderStepCheckDuration,
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} NiceFlorSDecoderStep;
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const SubGhzProtocolDecoder subghz_protocol_nice_flor_s_decoder = {
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.alloc = subghz_protocol_decoder_nice_flor_s_alloc,
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.free = subghz_protocol_decoder_nice_flor_s_free,
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.feed = subghz_protocol_decoder_nice_flor_s_feed,
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.reset = subghz_protocol_decoder_nice_flor_s_reset,
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.get_hash_data = subghz_protocol_decoder_nice_flor_s_get_hash_data,
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.serialize = subghz_protocol_decoder_nice_flor_s_serialize,
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.deserialize = subghz_protocol_decoder_nice_flor_s_deserialize,
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.get_string = subghz_protocol_decoder_nice_flor_s_get_string,
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};
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const SubGhzProtocolEncoder subghz_protocol_nice_flor_s_encoder = {
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.alloc = NULL,
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.free = NULL,
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.deserialize = NULL,
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.stop = NULL,
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.yield = NULL,
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};
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const SubGhzProtocol subghz_protocol_nice_flor_s = {
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.name = SUBGHZ_PROTOCOL_NICE_FLOR_S_NAME,
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.type = SubGhzProtocolTypeDynamic,
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.flag = SubGhzProtocolFlag_433 | SubGhzProtocolFlag_868 | SubGhzProtocolFlag_AM |
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SubGhzProtocolFlag_Decodable,
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.decoder = &subghz_protocol_nice_flor_s_decoder,
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.encoder = &subghz_protocol_nice_flor_s_encoder,
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};
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/**
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* Read bytes from rainbow table
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* @param file_name Full path to rainbow table the file
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* @param address Byte address in file
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* @return data
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*/
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static uint8_t
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subghz_protocol_nice_flor_s_get_byte_in_file(const char* file_name, uint32_t address) {
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if(!file_name) return 0;
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uint8_t buffer[1] = {0};
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if(subghz_keystore_raw_get_data(file_name, address, buffer, sizeof(uint8_t))) {
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return buffer[0];
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} else {
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return 0;
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}
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}
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static inline void subghz_protocol_decoder_nice_flor_s_magic_xor(uint8_t* p, uint8_t k) {
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for(uint8_t i = 1; i < 6; i++) {
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p[i] ^= k;
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}
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}
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uint64_t subghz_protocol_nice_flor_s_encrypt(uint64_t data, const char* file_name) {
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uint8_t* p = (uint8_t*)&data;
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uint8_t k = 0;
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for(uint8_t y = 0; y < 2; y++) {
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k = subghz_protocol_nice_flor_s_get_byte_in_file(file_name, p[0] & 0x1f);
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subghz_protocol_decoder_nice_flor_s_magic_xor(p, k);
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p[5] &= 0x0f;
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p[0] ^= k & 0xe0;
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k = subghz_protocol_nice_flor_s_get_byte_in_file(file_name, p[0] >> 3) + 0x25;
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subghz_protocol_decoder_nice_flor_s_magic_xor(p, k);
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p[5] &= 0x0f;
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p[0] ^= k & 0x7;
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if(y == 0) {
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k = p[0];
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p[0] = p[1];
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p[1] = k;
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}
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}
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p[5] = ~p[5] & 0x0f;
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k = ~p[4];
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p[4] = ~p[0];
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p[0] = ~p[2];
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p[2] = k;
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k = ~p[3];
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p[3] = ~p[1];
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p[1] = k;
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return data;
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}
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static uint64_t
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subghz_protocol_nice_flor_s_decrypt(SubGhzBlockGeneric* instance, const char* file_name) {
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furi_assert(instance);
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uint64_t data = instance->data;
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uint8_t* p = (uint8_t*)&data;
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uint8_t k = 0;
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k = ~p[4];
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p[5] = ~p[5];
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p[4] = ~p[2];
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p[2] = ~p[0];
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p[0] = k;
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k = ~p[3];
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p[3] = ~p[1];
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p[1] = k;
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for(uint8_t y = 0; y < 2; y++) {
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k = subghz_protocol_nice_flor_s_get_byte_in_file(file_name, p[0] >> 3) + 0x25;
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subghz_protocol_decoder_nice_flor_s_magic_xor(p, k);
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p[5] &= 0x0f;
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p[0] ^= k & 0x7;
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k = subghz_protocol_nice_flor_s_get_byte_in_file(file_name, p[0] & 0x1f);
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subghz_protocol_decoder_nice_flor_s_magic_xor(p, k);
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p[5] &= 0x0f;
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p[0] ^= k & 0xe0;
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if(y == 0) {
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k = p[0];
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p[0] = p[1];
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p[1] = k;
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}
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}
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return data;
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}
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void* subghz_protocol_decoder_nice_flor_s_alloc(SubGhzEnvironment* environment) {
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SubGhzProtocolDecoderNiceFlorS* instance = malloc(sizeof(SubGhzProtocolDecoderNiceFlorS));
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instance->base.protocol = &subghz_protocol_nice_flor_s;
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instance->generic.protocol_name = instance->base.protocol->name;
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instance->nice_flor_s_rainbow_table_file_name =
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subghz_environment_get_nice_flor_s_rainbow_table_file_name(environment);
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if(instance->nice_flor_s_rainbow_table_file_name) {
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FURI_LOG_I(
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TAG, "Loading rainbow table from %s", instance->nice_flor_s_rainbow_table_file_name);
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}
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return instance;
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}
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void subghz_protocol_decoder_nice_flor_s_free(void* context) {
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furi_assert(context);
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SubGhzProtocolDecoderNiceFlorS* instance = context;
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instance->nice_flor_s_rainbow_table_file_name = NULL;
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free(instance);
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}
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void subghz_protocol_decoder_nice_flor_s_reset(void* context) {
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furi_assert(context);
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SubGhzProtocolDecoderNiceFlorS* instance = context;
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instance->decoder.parser_step = NiceFlorSDecoderStepReset;
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}
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void subghz_protocol_decoder_nice_flor_s_feed(void* context, bool level, uint32_t duration) {
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furi_assert(context);
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SubGhzProtocolDecoderNiceFlorS* instance = context;
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switch(instance->decoder.parser_step) {
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case NiceFlorSDecoderStepReset:
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if((!level) && (DURATION_DIFF(duration, subghz_protocol_nice_flor_s_const.te_short * 38) <
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subghz_protocol_nice_flor_s_const.te_delta * 38)) {
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//Found start header Nice Flor-S
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instance->decoder.parser_step = NiceFlorSDecoderStepCheckHeader;
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}
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break;
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case NiceFlorSDecoderStepCheckHeader:
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if((level) && (DURATION_DIFF(duration, subghz_protocol_nice_flor_s_const.te_short * 3) <
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subghz_protocol_nice_flor_s_const.te_delta * 3)) {
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//Found next header Nice Flor-S
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instance->decoder.parser_step = NiceFlorSDecoderStepFoundHeader;
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} else {
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instance->decoder.parser_step = NiceFlorSDecoderStepReset;
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}
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break;
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case NiceFlorSDecoderStepFoundHeader:
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if((!level) && (DURATION_DIFF(duration, subghz_protocol_nice_flor_s_const.te_short * 3) <
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subghz_protocol_nice_flor_s_const.te_delta * 3)) {
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//Found header Nice Flor-S
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instance->decoder.parser_step = NiceFlorSDecoderStepSaveDuration;
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instance->decoder.decode_data = 0;
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instance->decoder.decode_count_bit = 0;
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} else {
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instance->decoder.parser_step = NiceFlorSDecoderStepReset;
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}
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break;
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case NiceFlorSDecoderStepSaveDuration:
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if(level) {
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if(DURATION_DIFF(duration, subghz_protocol_nice_flor_s_const.te_short * 3) <
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subghz_protocol_nice_flor_s_const.te_delta) {
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//Found STOP bit
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instance->decoder.parser_step = NiceFlorSDecoderStepReset;
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if(instance->decoder.decode_count_bit >=
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subghz_protocol_nice_flor_s_const.min_count_bit_for_found) {
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instance->generic.data = instance->decoder.decode_data;
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instance->generic.data_count_bit = instance->decoder.decode_count_bit;
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if(instance->base.callback)
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instance->base.callback(&instance->base, instance->base.context);
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}
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break;
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} else {
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//save interval
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instance->decoder.te_last = duration;
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instance->decoder.parser_step = NiceFlorSDecoderStepCheckDuration;
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}
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}
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break;
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case NiceFlorSDecoderStepCheckDuration:
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if(!level) {
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if((DURATION_DIFF(
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instance->decoder.te_last, subghz_protocol_nice_flor_s_const.te_short) <
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subghz_protocol_nice_flor_s_const.te_delta) &&
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(DURATION_DIFF(duration, subghz_protocol_nice_flor_s_const.te_long) <
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subghz_protocol_nice_flor_s_const.te_delta)) {
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subghz_protocol_blocks_add_bit(&instance->decoder, 0);
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instance->decoder.parser_step = NiceFlorSDecoderStepSaveDuration;
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} else if(
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(DURATION_DIFF(
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instance->decoder.te_last, subghz_protocol_nice_flor_s_const.te_long) <
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subghz_protocol_nice_flor_s_const.te_delta) &&
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(DURATION_DIFF(duration, subghz_protocol_nice_flor_s_const.te_short) <
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subghz_protocol_nice_flor_s_const.te_delta)) {
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subghz_protocol_blocks_add_bit(&instance->decoder, 1);
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instance->decoder.parser_step = NiceFlorSDecoderStepSaveDuration;
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} else
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instance->decoder.parser_step = NiceFlorSDecoderStepReset;
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} else {
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instance->decoder.parser_step = NiceFlorSDecoderStepReset;
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}
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break;
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}
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}
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/**
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* Analysis of received data
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* @param instance Pointer to a SubGhzBlockGeneric* instance
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* @param file_name Full path to rainbow table the file
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*/
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static void subghz_protocol_nice_flor_s_remote_controller(
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SubGhzBlockGeneric* instance,
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const char* file_name) {
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/*
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* Packet format Nice Flor-s: START-P0-P1-P2-P3-P4-P5-P6-P7-STOP
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* P0 (4-bit) - button positional code - 1:0x1, 2:0x2, 3:0x4, 4:0x8;
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* P1 (4-bit) - batch repetition number, calculated by the formula:
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* P1 = 0xF ^ P0 ^ n; where n changes from 1 to 15, then 0, and then in a circle
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* key 1: {0xE,0xF,0xC,0xD,0xA,0xB,0x8,0x9,0x6,0x7,0x4,0x5,0x2,0x3,0x0,0x1};
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* key 2: {0xD,0xC,0xF,0xE,0x9,0x8,0xB,0xA,0x5,0x4,0x7,0x6,0x1,0x0,0x3,0x2};
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* key 3: {0xB,0xA,0x9,0x8,0xF,0xE,0xD,0xC,0x3,0x2,0x1,0x0,0x7,0x6,0x5,0x4};
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* key 4: {0x7,0x6,0x5,0x4,0x3,0x2,0x1,0x0,0xF,0xE,0xD,0xC,0xB,0xA,0x9,0x8};
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* P2 (4-bit) - part of the serial number, P2 = (K ^ S3) & 0xF;
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* P3 (byte) - the major part of the encrypted index
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* P4 (byte) - the low-order part of the encrypted index
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* P5 (byte) - part of the serial number, P5 = K ^ S2;
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* P6 (byte) - part of the serial number, P6 = K ^ S1;
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* P7 (byte) - part of the serial number, P7 = K ^ S0;
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* K (byte) - depends on P3 and P4, K = Fk(P3, P4);
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* S3,S2,S1,S0 - serial number of the console 28 bit.
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*
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* data => 0x1c5783607f7b3 key serial cnt
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* decrypt => 0x10436c6820444 => 0x1 0436c682 0444
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*
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*/
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if(!file_name) {
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instance->cnt = 0;
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instance->serial = 0;
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instance->btn = 0;
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} else {
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uint64_t decrypt = subghz_protocol_nice_flor_s_decrypt(instance, file_name);
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instance->cnt = decrypt & 0xFFFF;
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instance->serial = (decrypt >> 16) & 0xFFFFFFF;
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instance->btn = (decrypt >> 48) & 0xF;
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}
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}
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uint8_t subghz_protocol_decoder_nice_flor_s_get_hash_data(void* context) {
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furi_assert(context);
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SubGhzProtocolDecoderNiceFlorS* instance = context;
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return subghz_protocol_blocks_get_hash_data(
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&instance->decoder, (instance->decoder.decode_count_bit / 8) + 1);
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}
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bool subghz_protocol_decoder_nice_flor_s_serialize(
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void* context,
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FlipperFormat* flipper_format,
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uint32_t frequency,
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FuriHalSubGhzPreset preset) {
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furi_assert(context);
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SubGhzProtocolDecoderNiceFlorS* instance = context;
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return subghz_block_generic_serialize(&instance->generic, flipper_format, frequency, preset);
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}
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bool subghz_protocol_decoder_nice_flor_s_deserialize(void* context, FlipperFormat* flipper_format) {
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furi_assert(context);
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SubGhzProtocolDecoderNiceFlorS* instance = context;
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return subghz_block_generic_deserialize(&instance->generic, flipper_format);
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}
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void subghz_protocol_decoder_nice_flor_s_get_string(void* context, string_t output) {
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furi_assert(context);
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SubGhzProtocolDecoderNiceFlorS* instance = context;
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subghz_protocol_nice_flor_s_remote_controller(
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&instance->generic, instance->nice_flor_s_rainbow_table_file_name);
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uint32_t code_found_hi = instance->generic.data >> 32;
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uint32_t code_found_lo = instance->generic.data & 0x00000000ffffffff;
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string_cat_printf(
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output,
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"%s %dbit\r\n"
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"Key:0x%lX%08lX\r\n"
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"Sn:%05lX\r\n"
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"Cnt:%04X Btn:%02lX\r\n",
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instance->generic.protocol_name,
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instance->generic.data_count_bit,
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code_found_hi,
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code_found_lo,
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instance->generic.serial,
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instance->generic.cnt,
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instance->generic.btn);
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}
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