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unleashed-firmware/lib/fl_subghz/protocols/subghz_protocol_keeloq.c

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#include "subghz_protocol_keeloq.h"
#include <furi.h>
#include <m-string.h>
#include <m-array.h>
/*
* Keeloq
* https://ru.wikipedia.org/wiki/KeeLoq
* https://phreakerclub.com/forum/showthread.php?t=1094
*
*/
#define KEELOQ_NLF 0x3A5C742E
#define bit(x,n) (((x)>>(n))&1)
#define g5(x,a,b,c,d,e) (bit(x,a)+bit(x,b)*2+bit(x,c)*4+bit(x,d)*8+bit(x,e)*16)
/*
* KeeLoq learning types
* https://phreakerclub.com/forum/showthread.php?t=67
*/
#define KEELOQ_LEARNING_UNKNOWN 0u
#define KEELOQ_LEARNING_SIMPLE 1u
#define KEELOQ_LEARNING_NORMAL 2u
#define KEELOQ_LEARNING_SECURE 3u
typedef struct {
string_t name;
uint64_t key;
uint16_t type;
} KeeLoqManufactureCode;
ARRAY_DEF(KeeLoqManufactureCodeArray, KeeLoqManufactureCode, M_POD_OPLIST)
#define M_OPL_KeeLoqManufactureCodeArray_t() ARRAY_OPLIST(KeeLoqManufactureCodeArray, M_POD_OPLIST)
struct SubGhzProtocolKeeloq {
SubGhzProtocolCommon common;
KeeLoqManufactureCodeArray_t manufacture_codes;
const char* manufacture_name;
};
/** Simple Learning Encrypt
* @param data - 0xBSSSCCCC, B(4bit) key, S(10bit) serial&0x3FF, C(16bit) counter
* @param key - manufacture (64bit)
* @return keelog encrypt data
*/
inline uint32_t subghz_protocol_keeloq_encrypt(const uint32_t data, const uint64_t key) {
uint32_t x = data, r;
for (r = 0; r < 528; r++)
x = (x>>1)^((bit(x,0)^bit(x,16)^(uint32_t)bit(key,r&63)^bit(KEELOQ_NLF,g5(x,1,9,20,26,31)))<<31);
return x;
}
/** Simple Learning Decrypt
* @param data - keelog encrypt data
* @param key - manufacture (64bit)
* @return 0xBSSSCCCC, B(4bit) key, S(10bit) serial&0x3FF, C(16bit) counter
*/
inline uint32_t subghz_protocol_keeloq_decrypt(const uint32_t data, const uint64_t key) {
uint32_t x = data, r;
for (r = 0; r < 528; r++)
x = (x<<1)^bit(x,31)^bit(x,15)^(uint32_t)bit(key,(15-r)&63)^bit(KEELOQ_NLF,g5(x,0,8,19,25,30));
return x;
}
/** Normal Learning
* @param data - serial number (28bit)
* @param key - manufacture (64bit)
* @return manufacture for this serial number (64bit)
*/
inline uint64_t subghz_protocol_keeloq_normal_learning(uint32_t data, const uint64_t key){
uint32_t k1,k2;
data&=0x0FFFFFFF;
data|=0x20000000;
k1=subghz_protocol_keeloq_decrypt(data, key);
data&=0x0FFFFFFF;
data|=0x60000000;
k2=subghz_protocol_keeloq_decrypt(data, key);
return ((uint64_t)k2<<32)| k1; // key - shifrovanoya
}
SubGhzProtocolKeeloq* subghz_protocol_keeloq_alloc() {
SubGhzProtocolKeeloq* instance = furi_alloc(sizeof(SubGhzProtocolKeeloq));
instance->common.name = "KeeLoq";
instance->common.code_min_count_bit_for_found = 64;
instance->common.te_shot = 400;
instance->common.te_long = 800;
instance->common.te_delta = 140;
instance->common.to_string = (SubGhzProtocolCommonToStr)subghz_protocol_keeloq_to_str;
KeeLoqManufactureCodeArray_init(instance->manufacture_codes);
return instance;
}
void subghz_protocol_keeloq_free(SubGhzProtocolKeeloq* instance) {
furi_assert(instance);
for
M_EACH(manufacture_code, instance->manufacture_codes, KeeLoqManufactureCodeArray_t) {
string_clear(manufacture_code->name);
manufacture_code->key = 0;
}
KeeLoqManufactureCodeArray_clear(instance->manufacture_codes);
free(instance);
}
void subghz_protocol_keeloq_add_manafacture_key(SubGhzProtocolKeeloq* instance, const char* name, uint64_t key, uint16_t type) {
KeeLoqManufactureCode* manufacture_code = KeeLoqManufactureCodeArray_push_raw(instance->manufacture_codes);
string_init_set_str(manufacture_code->name, name);
manufacture_code->key = key;
manufacture_code->type = type;
}
/** Checking the accepted code against the database manafacture key
*
* @param instance SubGhzProtocolKeeloq instance
* @param fix fix part of the parcel
* @param hop hop encrypted part of the parcel
* @return true on successful search
*/
uint8_t subghz_protocol_keeloq_check_remote_controller_selector(SubGhzProtocolKeeloq* instance, uint32_t fix , uint32_t hop) {
uint16_t end_serial = (uint16_t)(fix&0x3FF);
uint8_t btn = (uint8_t)(fix>>28);
uint32_t decrypt = 0;
uint64_t man_normal_learning;
for
M_EACH(manufacture_code, instance->manufacture_codes, KeeLoqManufactureCodeArray_t) {
switch (manufacture_code->type){
case KEELOQ_LEARNING_SIMPLE:
//Simple Learning
decrypt = subghz_protocol_keeloq_decrypt(hop, manufacture_code->key);
if((decrypt>>28 == btn) && ((((uint16_t)(decrypt>>16)) & 0x3FF) == end_serial)){
instance->manufacture_name = string_get_cstr(manufacture_code->name);
instance->common.cnt = decrypt & 0x0000FFFF;
return 1;
}
break;
case KEELOQ_LEARNING_NORMAL:
// Normal_Learning
// https://phreakerclub.com/forum/showpost.php?p=43557&postcount=37
man_normal_learning = subghz_protocol_keeloq_normal_learning(fix, manufacture_code->key);
decrypt=subghz_protocol_keeloq_decrypt(hop, man_normal_learning);
if( (decrypt>>28 ==btn)&& ((((uint16_t)(decrypt>>16))&0x3FF)==end_serial)){
instance->manufacture_name = string_get_cstr(manufacture_code->name);
instance->common.cnt = decrypt & 0x0000FFFF;
return 1;
}
break;
case KEELOQ_LEARNING_UNKNOWN:
// Simple Learning
decrypt=subghz_protocol_keeloq_decrypt(hop, manufacture_code->key);
if( (decrypt>>28 ==btn) && ((((uint16_t)(decrypt>>16))&0x3FF)==end_serial)){
instance->manufacture_name = string_get_cstr(manufacture_code->name);
instance->common.cnt = decrypt & 0x0000FFFF;
return 1;
}
// Check for mirrored man
uint64_t man_rev=0;
uint64_t man_rev_byte=0;
for(uint8_t i=0; i<64; i+=8){
man_rev_byte=(uint8_t)(manufacture_code->key >> i);
man_rev = man_rev | man_rev_byte << (56-i);
}
decrypt=subghz_protocol_keeloq_decrypt(hop, man_rev);
if( (decrypt>>28 ==btn) && ((((uint16_t)(decrypt>>16))&0x3FF)==end_serial)){
instance->manufacture_name = string_get_cstr(manufacture_code->name);
instance->common.cnt= decrypt&0x0000FFFF;
return 1;
}
//###########################
// Normal_Learning
// https://phreakerclub.com/forum/showpost.php?p=43557&postcount=37
man_normal_learning = subghz_protocol_keeloq_normal_learning(fix, manufacture_code->key);
decrypt=subghz_protocol_keeloq_decrypt(hop, man_normal_learning);
if( (decrypt>>28 ==btn)&& ((((uint16_t)(decrypt>>16))&0x3FF)==end_serial)){
instance->manufacture_name = string_get_cstr(manufacture_code->name);
instance->common.cnt= decrypt&0x0000FFFF;
return 1;
}
// Check for mirrored man
man_rev=0;
man_rev_byte=0;
for(uint8_t i=0; i<64; i+=8){
man_rev_byte = (uint8_t)(manufacture_code->key >> i);
man_rev = man_rev | man_rev_byte << (56-i);
}
man_normal_learning = subghz_protocol_keeloq_normal_learning(fix, man_rev);
decrypt=subghz_protocol_keeloq_decrypt(hop, man_normal_learning);
if( (decrypt>>28 ==btn) && ((((uint16_t)(decrypt>>16))&0x3FF)==end_serial)){
instance->manufacture_name = string_get_cstr(manufacture_code->name);
instance->common.cnt= decrypt&0x0000FFFF;
return 1;
}
break;
}
}
instance->manufacture_name = "Unknown";
instance->common.cnt=0;
return 0;
}
/** Analysis of received data
*
* @param instance SubGhzProtocolKeeloq instance
*/
void subghz_protocol_keeloq_check_remote_controller(SubGhzProtocolKeeloq* instance) {
uint64_t key = subghz_protocol_common_reverse_key(instance->common.code_found, instance->common.code_count_bit);
uint32_t key_fix = key >> 32;
uint32_t key_hop = key & 0x00000000ffffffff;
// Check key AN-Motors
if((key_hop >> 24) == ((key_hop>>16)&0x00ff) && (key_fix>>28) ==((key_hop>>12)&0x0f) ){
instance->manufacture_name = "AN-Motors";
instance->common.cnt = key_hop>>16;
} else {
subghz_protocol_keeloq_check_remote_controller_selector(instance, key_fix, key_hop);
}
instance ->common.serial= key_fix&0x0FFFFF;
instance->common.btn = key_fix >> 28;
if (instance->common.callback) instance->common.callback((SubGhzProtocolCommon*)instance, instance->common.context);
}
/** Send bit
*
* @param instance - SubGhzProtocolKeeloq instance
* @param bit - bit
*/
void subghz_protocol_keeloq_send_bit(SubGhzProtocolKeeloq* instance, uint8_t bit) {
if (bit) {
// send bit 1
SUBGHZ_TX_PIN_HIGTH();
delay_us(instance->common.te_shot);
SUBGHZ_TX_PIN_LOW();
delay_us(instance->common.te_long);
} else {
// send bit 0
SUBGHZ_TX_PIN_HIGTH();
delay_us(instance->common.te_long);
SUBGHZ_TX_PIN_LOW();
delay_us(instance->common.te_shot);
}
}
void subghz_protocol_keeloq_send_key(SubGhzProtocolKeeloq* instance, uint64_t key, uint8_t bit, uint8_t repeat) {
while (repeat--) {
// Send header
for (uint8_t i = 11; i > 0; i--) {
SUBGHZ_TX_PIN_HIGTH();
delay_us(instance->common.te_shot);
SUBGHZ_TX_PIN_LOW();
delay_us(instance->common.te_shot);
}
delay_us(instance->common.te_shot * 9); //+1 up Send header
for (uint8_t i = bit; i > 0; i--) {
subghz_protocol_keeloq_send_bit(instance, bit_read(key, i - 1));
}
// +send 2 status bit
subghz_protocol_keeloq_send_bit(instance, 0);
subghz_protocol_keeloq_send_bit(instance, 0);
// send end
subghz_protocol_keeloq_send_bit(instance, 0);
delay_us(instance->common.te_shot * 2); //+2 interval END SEND
}
}
void subghz_protocol_keeloq_parse(SubGhzProtocolKeeloq* instance, LevelPair data) {
switch (instance->common.parser_step) {
case 0:
if ((data.level == ApiHalSubGhzCaptureLevelHigh) && DURATION_DIFF(data.duration, instance->common.te_shot)< instance->common.te_delta) {
instance->common.parser_step = 1;
instance->common.header_count++;
} else {
instance->common.parser_step = 0;
}
break;
case 1:
if ((data.level == ApiHalSubGhzCaptureLevelLow) && (DURATION_DIFF(data.duration, instance->common.te_shot ) < instance->common.te_delta)) {
instance->common.parser_step = 0;
break;
}
if ((instance->common.header_count > 2) && ( DURATION_DIFF(data.duration, instance->common.te_shot * 10)< instance->common.te_delta * 10)) {
// Found header
instance->common.parser_step = 2;
instance->common.code_found = 0;
instance->common.code_count_bit = 0;
} else {
instance->common.parser_step = 0;
instance->common.header_count = 0;
}
break;
case 2:
if (data.level == ApiHalSubGhzCaptureLevelHigh) {
instance->common.te_last = data.duration;
instance->common.parser_step = 3;
}
break;
case 3:
if (data.level == ApiHalSubGhzCaptureLevelLow) {
if (data.duration >= (instance->common.te_shot * 2 + instance->common.te_delta)) {
// Found end TX
instance->common.parser_step = 0;
if (instance->common.code_count_bit >= instance->common.code_min_count_bit_for_found) {
//&& (instance->common.code_last_found != instance->common.code_found )) {
instance->common.code_last_found = instance->common.code_found;
//ToDo out data display
subghz_protocol_keeloq_check_remote_controller(instance);
instance->common.code_found = 0;
instance->common.code_count_bit = 0;
instance->common.header_count = 0;
}
break;
} else if ((DURATION_DIFF(instance->common.te_last, instance->common.te_shot) < instance->common.te_delta)
&& (DURATION_DIFF(data.duration, instance->common.te_long) < instance->common.te_delta)) {
if (instance->common.code_count_bit < instance->common.code_min_count_bit_for_found) {
subghz_protocol_common_add_bit(&instance->common, 1);
}
instance->common.parser_step = 2;
} else if ((DURATION_DIFF(instance->common.te_last, instance->common.te_long) < instance->common.te_delta)
&& (DURATION_DIFF(data.duration, instance->common.te_shot) < instance->common.te_delta)) {
if (instance->common.code_count_bit < instance->common.code_min_count_bit_for_found) {
subghz_protocol_common_add_bit(&instance->common, 0);
}
instance->common.parser_step = 2;
} else {
instance->common.parser_step = 0;
instance->common.header_count = 0;
}
} else {
instance->common.parser_step = 0;
instance->common.header_count = 0;
}
break;
}
}
void subghz_protocol_keeloq_to_str(SubGhzProtocolKeeloq* instance, string_t output) {
uint32_t code_found_hi = instance->common.code_found >> 32;
uint32_t code_found_lo = instance->common.code_found & 0x00000000ffffffff;
uint64_t code_found_reverse = subghz_protocol_common_reverse_key(instance->common.code_found, instance->common.code_count_bit);
uint32_t code_found_reverse_hi = code_found_reverse>>32;
uint32_t code_found_reverse_lo = code_found_reverse&0x00000000ffffffff;
string_cat_printf(
output,
"Protocol %s, %d Bit\r\n"
"KEY:0x%lX%lX\r\n"
"FIX:%lX MF:%s \r\n"
"HOP:%lX \r\n"
//"CNT:%04X BTN:%02lX\r\n",
"SN:%05lX CNT:%04X BTN:%02lX\r\n",
//"YEK:0x%lX%lX\r\n",
instance->common.name,
instance->common.code_count_bit,
code_found_hi,
code_found_lo,
//code_found_reverse_hi,
//code_found_reverse_lo
code_found_reverse_hi,
instance->manufacture_name,
code_found_reverse_lo,
instance->common.serial,
instance->common.cnt,
instance->common.btn
);
}
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