portapack-mayhem/mayhem-firmware
1
0
Fork 0
mirror of https://github.com/portapack-mayhem/mayhem-firmware.git synced 2026-09-03 21:39:01 +00:00
Code Issues Packages Projects Releases 10 Wiki Activity

Updated subcar processors (#2913)

Browse Source
This commit is contained in:
Totoo
2026-01-10 14:47:33 +01:00
committed by GitHub
parent 2884bb9ab7
commit 266d90a600
9 changed files with 304 additions and 460 deletions
Download Patch File Download Diff File Expand all files Collapse all files
firmware/application/external/subcarrx/ui_subcar.cpp
Vendored
+73 -9
View File
@@ -266,10 +266,11 @@ void SubCarRecentEntryDetailView::parseProtocol() {
if (entry_.sensorType == FPC_Invalid) return;
if (entry_.sensorType == FPC_SUZUKI) {
uint32_t serial_button = (((entry_.data >> 32) & 0xFFF) << 20) | (entry_.data >> 12);
serial = serial_button >> 4;
uint8_t buttonid = serial_button & 0xF;
cnt = (entry_.data >> 44) & 0xFFFF;
uint32_t data_high = (uint32_t)(entry_.data >> 32);
uint32_t data_low = (uint32_t)entry_.data;
serial = ((data_high & 0xFFF) << 16) | (data_low >> 16);
uint8_t buttonid = (data_low >> 12) & 0xF;
cnt = (data_high << 4) >> 16;
btn = to_string_dec_uint(buttonid);
return;
}
@@ -320,15 +321,78 @@ void SubCarRecentEntryDetailView::parseProtocol() {
}
if (entry_.sensorType == FPC_KIAV5) {
serial = (uint32_t)(((entry_.data >> 32) & 0x0FFFFFFF) >> 1);
uint8_t button = (entry_.data >> 61) & 0x07;
uint64_t yek = 0;
for (int i = 0; i < 8; i++) {
uint8_t byte = (entry_.data2 >> (i * 8)) & 0xFF;
uint8_t reversed = 0;
for (int b = 0; b < 8; b++) {
if (byte & (1 << b))
reversed |= (1 << (7 - b));
}
yek |= ((uint64_t)reversed << ((7 - i) * 8));
}
serial = (uint32_t)((yek >> 32) & 0x0FFFFFFF);
uint8_t button = (uint8_t)((yek >> 60) & 0x0F);
uint32_t encrypted = (uint32_t)(yek & 0xFFFFFFFF);
btn = to_string_dec_uint(button);
cnt = (uint16_t)(entry_.data & 0xFFFF);
// decode
uint8_t keystore_bytes[] = {0x53, 0x54, 0x46, 0x52, 0x4b, 0x45, 0x30, 0x30};
uint8_t s0 = (encrypted & 0xFF);
uint8_t s1 = (encrypted >> 8) & 0xFF;
uint8_t s2 = (encrypted >> 16) & 0xFF;
uint8_t s3 = (encrypted >> 24) & 0xFF;
int round_index = 1;
for (size_t i = 0; i < 18; i++) {
uint8_t r = keystore_bytes[round_index] & 0xFF;
int steps = 8;
while (steps > 0) {
uint8_t base;
if ((s3 & 0x40) == 0) {
base = (s3 & 0x02) == 0 ? 0x74 : 0x2E;
} else {
base = (s3 & 0x02) == 0 ? 0x3A : 0x5C;
}
if (s2 & 0x08) {
base = (((base >> 4) & 0x0F) | ((base & 0x0F) << 4)) & 0xFF;
}
if (s1 & 0x01) {
base = ((base & 0x3F) << 2) & 0xFF;
}
if (s0 & 0x01) {
base = (base << 1) & 0xFF;
}
uint8_t temp = (s3 ^ s1) & 0xFF;
s3 = ((s3 & 0x7F) << 1) & 0xFF;
if (s2 & 0x80) {
s3 |= 0x01;
}
s2 = ((s2 & 0x7F) << 1) & 0xFF;
if (s1 & 0x80) {
s2 |= 0x01;
}
s1 = ((s1 & 0x7F) << 1) & 0xFF;
if (s0 & 0x80) {
s1 |= 0x01;
}
s0 = ((s0 & 0x7F) << 1) & 0xFF;
uint8_t chk = (base ^ (r ^ temp)) & 0xFF;
if (chk & 0x80) {
s0 |= 0x01;
}
r = ((r & 0x7F) << 1) & 0xFF;
steps--;
}
round_index = (round_index - 1) & 0x7;
}
cnt = (s0 + (s1 << 8)) & 0xFFFF;
}
if (entry_.sensorType == FPC_KIAV3V4) {
// not decrypted!
serial = SD_NO_SERIAL; //(uint32_t)entry_.data;
serial = (uint32_t)entry_.data;
// uint8_t button = entry_.data2 & 0xFF;
btn = "?"; // to_string_dec_uint(button);
}
@@ -344,7 +408,7 @@ void SubCarRecentEntryDetailView::parseProtocol() {
if (entry_.sensorType == FPC_KIAV1) {
serial = (uint32_t)((entry_.data >> 24) & 0xFFFFFFFF);
uint8_t button = (uint8_t)((entry_.data >> 16) & 0xFF);
cnt = (uint8_t)((entry_.data >> 8) & 0xFF);
cnt = (uint8_t)((entry_.data >> 4) & 0xF) << 8 | ((entry_.data >> 8) & 0xFF);
btn = to_string_dec_uint(button);
}