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Momentum-Firmware/lib/nfc/protocols/felica.c
dogtopus a2cd122f78 Move FeliCa IDm/PMm display to the new NFC-F info screen 
The goal is to gradually split out NfcWorkerEventReadFelica into more specific decoders, and have the generic NFC-F info screen display info for tags that don't have a specific decoder, similar to how NFC-A works currently.
2023-03-09 22:12:32 -04:00

660 lines
20 KiB
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#include <limits.h>
#include <mbedtls/sha1.h>
#include "felica.h"
#include "nfc_util.h"
#include <furi.h>
#include "furi_hal_nfc.h"
#define TAG "FeliCa"
bool felica_check_ic_type(uint8_t* PMm) {
uint8_t rom_type = PMm[0];
uint8_t ic_type = PMm[1];
bool is_valid_ic = false;
if(ic_type == 0xff) { // RC-S967 in nfc-dep
is_valid_ic = true;
} else if(ic_type == 0xf2) { // RC-S732?
is_valid_ic = true;
} else if(ic_type == 0xf0 || ic_type == 0xf1) { // Lite(S)
is_valid_ic = true;
} else if(ic_type == 0xe1) { // RC-S967 in plug mode
is_valid_ic = true;
} else if(ic_type == 0xe0) { // RC-S926
is_valid_ic = true;
} else if(ic_type >= 0x44 && ic_type <= 0x48) { // SD2
is_valid_ic = true;
} else if(ic_type == 0x3e && rom_type == 0x03) { // RC-SA08
return true;
} else if(ic_type == 0x35) { // RC-SA01
is_valid_ic = true;
} else if(ic_type == 0x32) { // RC-SA00
is_valid_ic = true;
} else if(ic_type == 0x31) { // Suica/PASMO
is_valid_ic = true;
} else if(ic_type == 0x20) { // RC-S962
is_valid_ic = true;
} else if(ic_type >= 0x10 && ic_type <= 0x1f) { // Mobile IC version 2/3
is_valid_ic = true;
} else if(ic_type == 0x0d) { // RC-S960
is_valid_ic = true;
} else if(ic_type == 0x0c) { // RC-S954
is_valid_ic = true;
} else if(ic_type == 0x0b) { // Old Suica?
is_valid_ic = true;
} else if(ic_type == 0x09) { // RC-S953
is_valid_ic = true;
} else if(ic_type == 0x08) { // RC-S952
is_valid_ic = true;
} else if(ic_type == 0x06 || ic_type == 0x07) { // Mobile IC version 1
is_valid_ic = true;
} else if(ic_type == 0x02) { // RC-S919
is_valid_ic = true;
} else if(ic_type == 0x01) { // RC-S915
is_valid_ic = true;
} else if(ic_type == 0x00) { // RC-S830
is_valid_ic = true;
}
if(!is_valid_ic) {
return false;
}
// need more samples to confirm below
/*
if (rom_type != 0x01) {
return false;
}
*/
return true;
}
FelicaICType felica_get_ic_type(uint8_t* PMm) {
uint8_t rom_type = PMm[0];
uint8_t ic_type = PMm[1];
UNUSED(rom_type);
switch(ic_type) {
case 0xff:
return FelicaICTypeLink;
case 0xf2:
return FelicaICTypeLink;
case 0xf1:
return FelicaICTypeLiteS;
case 0xf0:
return FelicaICTypeLite;
case 0xe1:
return FelicaICTypeLink;
case 0xe0:
return FelicaICTypePlug;
case 0x48:
return FelicaICTypeSD2_6K;
case 0x47:
return FelicaICTypeRC_SA24_6K;
case 0x46:
return FelicaICTypeSD2_4K;
case 0x45:
case 0x44:
return FelicaICTypeSD2WithDES;
case 0x3e:
return FelicaICTypeRC_SA08;
case 0x35:
return FelicaICTypeSD1;
case 0x32:
return FelicaICTypeSD1WithDES;
case 0x31:
return FelicaICTypeSuica;
case 0x20:
return FelicaICTypeFRAM_4K;
case 0x1f:
case 0x1e:
case 0x1d:
case 0x1c:
case 0x1b:
case 0x1a:
case 0x19:
case 0x18:
return FelicaICTypeMobileIC_V4_1;
case 0x17:
return FelicaICTypeMobileIC_V4;
case 0x16:
case 0x15:
case 0x14:
return FelicaICTypeMobileIC_V3;
case 0x13:
case 0x12:
case 0x11:
case 0x10:
return FelicaICTypeMobileIC_V2;
case 0x0d:
return FelicaICTypeFRAM_9K;
case 0x0c:
return FelicaICTypeEMV_36K;
case 0x0b: // Old Suica?
return FelicaICTypeSuica;
case 0x09:
return FelicaICTypeEMV_16K;
case 0x08:
return FelicaICTypeEMV_32K;
case 0x07:
case 0x06:
return FelicaICTypeMobileIC_V1;
case 0x02:
return FelicaICType576B;
case 0x01:
return FelicaICType4K;
case 0x00:
return FelicaICType2K;
}
return FelicaICType2K;
}
uint8_t felica_prepare_unencrypted_read(
uint8_t* dest,
const FelicaReader* reader,
const uint16_t* service_code_list,
uint8_t service_count,
const uint32_t* block_list,
uint8_t block_count) {
dest[0] = FELICA_UNENCRYPTED_READ_CMD;
memcpy(&dest[1], reader->current_idm, 8);
dest[9] = service_count;
uint8_t msg_len = 10;
for(int i = 0; i < service_count; i++) {
uint16_t service_code = service_code_list[i];
dest[msg_len++] = service_code & 0xFF;
dest[msg_len++] = service_code >> 8;
}
dest[msg_len++] = block_count;
for(int i = 0; i < block_count; i++) {
uint16_t block_num = block_list[i];
dest[msg_len++] = block_num & 0xFF;
dest[msg_len++] = block_num >> 8;
}
return msg_len;
}
uint8_t felica_lite_prepare_unencrypted_read(
uint8_t* dest,
const FelicaReader* reader,
bool is_read_only,
const uint8_t* block_list,
uint8_t block_count) {
dest[0] = FELICA_UNENCRYPTED_READ_CMD;
memcpy(&dest[1], reader->current_idm, 8);
dest[9] = 1;
uint8_t msg_len = 10;
uint8_t service_code =
FelicaServiceTypeRandom |
((is_read_only) ? FelicaServiceAttributeUnauthRO : FelicaServiceAttributeUnauthRO);
dest[msg_len++] = service_code & 0xFF;
dest[msg_len++] = service_code >> 8;
dest[msg_len++] = block_count;
for(int i = 0; i < block_count; i++) {
dest[msg_len++] = IS_2_BYTE_BLOCK_LIST_ELEMENT;
dest[msg_len++] = block_list[i];
}
return msg_len;
}
uint16_t felica_parse_unencrypted_read(
uint8_t* buf,
uint8_t len,
FelicaReader* reader,
uint8_t* out,
uint16_t out_len) {
if(len < 12) {
return false;
}
len--;
buf++;
if(*buf != FELICA_UNENCRYPTED_READ_RES) {
return false;
}
len--;
buf++;
if(memcmp(buf, reader->current_idm, 8) != 0) {
return false;
}
len -= 8;
buf += 8;
reader->status_flags[0] = buf[0];
reader->status_flags[1] = buf[1];
len -= 2;
buf += 2;
if(reader->status_flags[0] != 0) {
FURI_LOG_W(TAG, "SF1: %02X SF2: %02X", reader->status_flags[0], reader->status_flags[1]);
return 0;
}
if(len < 1) {
return 0;
}
uint16_t data_length = *buf * FELICA_BLOCK_SIZE;
len--;
buf++;
if(len < data_length || out_len < data_length) {
return 0;
}
memcpy(out, buf, data_length);
return data_length;
}
uint8_t felica_prepare_unencrypted_write(
uint8_t* dest,
FelicaReader* reader,
const uint16_t* service_code_list,
uint8_t service_count,
const uint32_t* block_list,
uint8_t block_count,
const uint8_t* block_data) {
dest[0] = FELICA_UNENCRYPTED_WRITE_CMD;
memcpy(&dest[1], reader->current_idm, 8);
dest[9] = service_count;
uint8_t msg_len = 10;
for(int i = 0; i < service_count; i++) {
uint16_t service_code = service_code_list[i];
dest[msg_len++] = service_code & 0xFF;
dest[msg_len++] = service_code >> 8;
}
dest[msg_len++] = block_count;
for(int i = 0; i < block_count; i++) {
uint16_t block_num = block_list[i];
dest[msg_len++] = block_num & 0xFF;
dest[msg_len++] = block_num >> 8;
}
uint16_t data_length = block_count * FELICA_BLOCK_SIZE;
memcpy(dest + msg_len, block_data, data_length);
msg_len += data_length;
return msg_len;
}
uint8_t felica_lite_prepare_unencrypted_write(
uint8_t* dest,
const FelicaReader* reader,
const uint8_t* block_list,
uint8_t block_count,
const uint8_t* block_data) {
dest[0] = FELICA_UNENCRYPTED_WRITE_CMD;
memcpy(&dest[1], reader->current_idm, 8);
dest[9] = 1;
uint8_t msg_len = 10;
uint8_t service_code = FelicaServiceTypeRandom | FelicaServiceAttributeUnauthRW;
dest[msg_len++] = service_code & 0xFF;
dest[msg_len++] = service_code >> 8;
dest[msg_len++] = block_count;
for(int i = 0; i < block_count; i++) {
dest[msg_len++] = block_list[i];
dest[msg_len++] = IS_2_BYTE_BLOCK_LIST_ELEMENT;
}
uint16_t data_length = block_count * FELICA_BLOCK_SIZE;
memcpy(dest + msg_len, block_data, data_length);
msg_len += data_length;
return msg_len;
}
bool felica_parse_unencrypted_write(uint8_t* buf, uint8_t len, FelicaReader* reader) {
if(len < 12) {
return false;
}
len--;
buf++;
if(*buf != FELICA_UNENCRYPTED_WRITE_RES) {
return false;
}
len--;
buf++;
if(memcmp(buf, reader->current_idm, 8) != 0) {
return false;
}
len -= 8;
buf += 8;
reader->status_flags[0] = buf[0];
reader->status_flags[1] = buf[1];
len -= 2;
buf += 2;
if(reader->status_flags[0] != 0) {
FURI_LOG_W(TAG, "SF1: %02X SF2: %02X", reader->status_flags[0], reader->status_flags[1]);
return 0;
}
return true;
}
void felica_parse_system_info(FelicaSystem* system, uint8_t* IDm, uint8_t* PMm) {
memcpy(system->idm, IDm, 8);
memcpy(system->pmm, PMm, 8);
for(int i = 0; i < 6; i++) {
char MRT_byte = PMm[2 + i];
FelicaMRTParts* mrt_data = &system->maximum_response_times[i];
mrt_data->real_a = (MRT_byte & 7) + 1;
MRT_byte >>= 3;
mrt_data->real_b = (MRT_byte & 7) + 1;
MRT_byte >>= 3;
mrt_data->exponent = (MRT_byte & 3);
}
}
bool felica_lite_can_read_without_mac(uint8_t* mc_r_restr, uint8_t block_number) {
if(block_number > REG_LITE_BLOCK) {
return true;
}
uint8_t byte = mc_r_restr[block_number < 8 ? 0 : 1];
return ((byte >> (block_number % 8)) & 1) == 0;
}
void felica_define_normal_block(FelicaService* service, uint16_t number, uint8_t* data) {
FelicaBlock* block = malloc(sizeof(FelicaBlock));
memcpy(block->data, data, FELICA_BLOCK_SIZE);
FelicaBlockList_set_at(service->blocks, number, block);
}
bool felica_read_lite_system(
FuriHalNfcTxRxContext* tx_rx,
FelicaReader* reader,
FelicaData* data,
FelicaSystem* system) {
const uint8_t fixed_blocks[] = {
SYS_CODE_LITE_BLOCK,
DEVICE_ID_LITE_BLOCK,
ID_LITE_BLOCK,
RC_LITE_BLOCK,
CARD_KEY_LITE_BLOCK,
MAC_LITE_BLOCK,
CARD_KEY_VER_LITE_BLOCK,
MEM_CONFIG_LITE_BLOCK,
};
uint8_t block_data[FELICA_BLOCK_SIZE * 4];
tx_rx->tx_bits =
8 * felica_lite_prepare_unencrypted_read(tx_rx->tx_data, reader, true, fixed_blocks, 1);
if(!furi_hal_nfc_tx_rx_full(tx_rx)) {
FURI_LOG_W(TAG, "Bad exchange verifying Lite system code");
return false;
}
if(felica_parse_unencrypted_read(
tx_rx->rx_data, tx_rx->rx_bits / 8, reader, block_data, sizeof(block_data)) !=
FELICA_BLOCK_SIZE) {
FURI_LOG_W(TAG, "Bad response to Read without Encryption (SYS_C)");
return false;
}
if(nfc_util_bytes2num(block_data, 2) != LITE_SYSTEM_CODE) {
FURI_LOG_W(TAG, "Unexpected SYS_C value");
return false;
}
tx_rx->tx_bits = 8 * felica_lite_prepare_unencrypted_read(
tx_rx->tx_data, reader, true, &fixed_blocks[1], 1);
if(!furi_hal_nfc_tx_rx_full(tx_rx)) {
FURI_LOG_W(TAG, "Bad exchange reading D_ID");
return false;
}
if(felica_parse_unencrypted_read(
tx_rx->rx_data, tx_rx->rx_bits / 8, reader, block_data, sizeof(block_data)) !=
FELICA_BLOCK_SIZE) {
FURI_LOG_W(TAG, "Bad response to Read without Encryption (D_ID)");
return false;
}
if(memcmp(system->idm, block_data, 8) != 0 || memcmp(system->pmm, block_data + 8, 8) != 0) {
FURI_LOG_W(TAG, "Mismatching values for D_ID");
return false;
}
system->code = LITE_SYSTEM_CODE;
FelicaLiteInfo* lite_info = &system->lite_info;
lite_info->card_key_1 = NULL;
lite_info->card_key_2 = NULL;
tx_rx->tx_bits = 8 * felica_lite_prepare_unencrypted_read(
tx_rx->tx_data, reader, true, &fixed_blocks[2], 1);
if(!furi_hal_nfc_tx_rx_full(tx_rx)) {
FURI_LOG_W(TAG, "Bad exchange reading ID");
return false;
}
if(felica_parse_unencrypted_read(
tx_rx->rx_data, tx_rx->rx_bits / 8, reader, block_data, sizeof(block_data)) !=
FELICA_BLOCK_SIZE) {
FURI_LOG_W(TAG, "Bad response to Read without Encryption (ID)");
return false;
}
lite_info->data_format_code = nfc_util_bytes2num(block_data + 8, 2);
memcpy(lite_info->ID_value, block_data + 10, 6);
FURI_LOG_I(TAG, "ID:");
for(int i = 0; i < FELICA_BLOCK_SIZE; i++) {
FURI_LOG_I(TAG, "%02X", block_data[i]);
}
memset(block_data, 0, FELICA_BLOCK_SIZE);
tx_rx->tx_bits = 8 * felica_lite_prepare_unencrypted_write(
tx_rx->tx_data, reader, &fixed_blocks[3], 1, block_data);
if(!furi_hal_nfc_tx_rx_full(tx_rx)) {
FURI_LOG_W(TAG, "Bad exchange writing random challenge");
return false;
}
if(!felica_parse_unencrypted_write(tx_rx->rx_data, tx_rx->rx_bits / 8, reader)) {
FURI_LOG_W(TAG, "Bad response to Write without Encryption (RC)");
return false;
}
tx_rx->tx_bits = 8 * felica_lite_prepare_unencrypted_read(
tx_rx->tx_data, reader, true, &fixed_blocks[4], 2);
if(!furi_hal_nfc_tx_rx_full(tx_rx)) {
FURI_LOG_W(TAG, "Bad exchange reading CK and MAC");
return false;
}
if(felica_parse_unencrypted_read(
tx_rx->rx_data, tx_rx->rx_bits / 8, reader, block_data, sizeof(block_data)) !=
FELICA_BLOCK_SIZE * 2) {
FURI_LOG_W(TAG, "Bad response to Read without Encryption (CK, MAC)");
return false;
}
memcpy(lite_info->MAC, block_data + FELICA_BLOCK_SIZE, 8);
FURI_LOG_I(TAG, "MAC:");
for(int i = 0; i < FELICA_BLOCK_SIZE; i++) {
FURI_LOG_I(TAG, "%02X", block_data[i + FELICA_BLOCK_SIZE]);
}
tx_rx->tx_bits = 8 * felica_lite_prepare_unencrypted_read(
tx_rx->tx_data, reader, true, &fixed_blocks[6], 2);
if(!furi_hal_nfc_tx_rx_full(tx_rx)) {
FURI_LOG_W(TAG, "Bad exchange reading CKV and MC");
return false;
}
if(felica_parse_unencrypted_read(
tx_rx->rx_data, tx_rx->rx_bits / 8, reader, block_data, sizeof(block_data)) !=
FELICA_BLOCK_SIZE * 2) {
FURI_LOG_W(TAG, "Bad response to Read without Encryption (CKV, MC)");
return false;
}
lite_info->card_key_version = nfc_util_bytes2num(block_data, 2);
memcpy(lite_info->memory_config, block_data + FELICA_BLOCK_SIZE, FELICA_BLOCK_SIZE);
// Read SPAD and REG accordingly to MC
uint8_t* mc_data = lite_info->memory_config;
for(uint8_t block_number = 0; block_number <= REG_LITE_BLOCK; block_number++) {
if(!felica_lite_can_read_without_mac(mc_data + 6, block_number)) {
if(block_number < REG_LITE_BLOCK) {
lite_info->S_PAD[block_number] = NULL;
} else {
lite_info->REG = NULL;
}
continue;
}
tx_rx->tx_bits = 8 * felica_lite_prepare_unencrypted_read(
tx_rx->tx_data, reader, true, &block_number, 1);
if(!furi_hal_nfc_tx_rx_full(tx_rx)) {
FURI_LOG_W(TAG, "Bad exchange reading blocks");
return false;
}
if(felica_parse_unencrypted_read(
tx_rx->rx_data, tx_rx->rx_bits / 8, reader, block_data, sizeof(block_data)) !=
FELICA_BLOCK_SIZE) {
FURI_LOG_W(TAG, "Bad response to Read without Encryption (block %d)", block_number);
return false;
}
uint8_t* block = malloc(FELICA_BLOCK_SIZE);
memcpy(block, block_data, FELICA_BLOCK_SIZE);
if(block_number < REG_LITE_BLOCK) {
lite_info->S_PAD[block_number] = block;
} else {
lite_info->REG = block;
}
}
if(data->type == FelicaICTypeLiteS) {
const uint8_t fixed_s_blocks[] = {
CARD_KEY_LITE_BLOCK,
MAC_A_LITE_BLOCK,
WRITE_COUNT_LITE_BLOCK,
CRC_CHECK_LITE_BLOCK,
};
tx_rx->tx_bits = 8 * felica_lite_prepare_unencrypted_read(
tx_rx->tx_data, reader, true, fixed_s_blocks, 2);
if(!furi_hal_nfc_tx_rx_full(tx_rx)) {
FURI_LOG_W(TAG, "Bad exchange reading ID with MAC_A");
return false;
}
if(felica_parse_unencrypted_read(
tx_rx->rx_data, tx_rx->rx_bits / 8, reader, block_data, sizeof(block_data)) !=
FELICA_BLOCK_SIZE * 2) {
FURI_LOG_W(TAG, "Bad response to Read without Encryption (CK, MAC_A)");
return false;
}
memcpy(lite_info->MAC_A, block_data + FELICA_BLOCK_SIZE, FELICA_BLOCK_SIZE);
tx_rx->tx_bits = 8 * felica_lite_prepare_unencrypted_read(
tx_rx->tx_data, reader, true, &fixed_s_blocks[2], 2);
if(!furi_hal_nfc_tx_rx_full(tx_rx)) {
FURI_LOG_W(TAG, "Bad exchange reading ID with MAC_A");
return false;
}
if(felica_parse_unencrypted_read(
tx_rx->rx_data, tx_rx->rx_bits / 8, reader, block_data, sizeof(block_data)) !=
FELICA_BLOCK_SIZE * 2) {
FURI_LOG_W(TAG, "Bad response to Read without Encryption (WC, CRC_CHECK)");
return false;
}
lite_info->write_count = nfc_util_bytes2num(block_data, 3);
lite_info->crc_valid = block_data[FELICA_BLOCK_SIZE] == 0x00;
}
return true;
}
bool felica_read_card(
FuriHalNfcTxRxContext* tx_rx,
FelicaData* data,
uint8_t* polled_idm,
uint8_t* polled_pmm) {
furi_assert(tx_rx);
furi_assert(polled_idm);
furi_assert(polled_pmm);
bool card_read = false;
do {
FelicaReader reader;
memcpy(reader.current_idm, polled_idm, 8);
memcpy(reader.current_pmm, polled_pmm, 8);
FelicaSystem* current_system = malloc(sizeof(FelicaSystem));
FelicaSystemList_init(data->systems);
FelicaSystemList_push_back(data->systems, current_system);
felica_parse_system_info(current_system, polled_idm, polled_pmm);
if(data->type == FelicaICTypeLite || data->type == FelicaICTypeLiteS) {
FURI_LOG_I(TAG, "Reading Felica Lite system");
felica_read_lite_system(tx_rx, &reader, data, current_system);
card_read = true;
break;
}
} while(false);
return card_read;
}
void felica_service_clear(FelicaService* service) {
FelicaBlockList_it_t it;
for(FelicaBlockList_it(it, service->blocks); !FelicaBlockList_end_p(it);
FelicaBlockList_next(it)) {
FelicaBlock* block = *FelicaBlockList_ref(it);
free(block);
}
FelicaBlockList_clear(service->blocks);
}
void felica_lite_clear(FelicaLiteInfo* lite_info) {
for(int i = 0; i < REG_LITE_BLOCK; i++) {
uint8_t* block = lite_info->S_PAD[i];
if(block != NULL) {
free(block);
}
}
if(lite_info->REG != NULL) {
free(lite_info->REG);
}
if(lite_info->card_key_1 != NULL) {
free(lite_info->card_key_1);
}
if(lite_info->card_key_2 != NULL) {
free(lite_info->card_key_2);
}
}
void felica_area_clear(FelicaArea* area) {
FelicaNodeList_it_t it;
for(FelicaNodeList_it(it, area->nodes); !FelicaNodeList_end_p(it); FelicaNodeList_next(it)) {
FelicaNode* node = *FelicaNodeList_ref(it);
if(node->type == FelicaNodeTypeArea) {
felica_area_clear(node->area);
} else if(node->type == FelicaNodeTypeService) {
felica_service_clear(node->service);
}
free(node);
}
FelicaNodeList_clear(area->nodes);
}
void felica_clear(FelicaData* data) {
FelicaSystemList_it_t it;
for(FelicaSystemList_it(it, data->systems); !FelicaSystemList_end_p(it);
FelicaSystemList_next(it)) {
FelicaSystem* system = *FelicaSystemList_ref(it);
if(system->code == LITE_SYSTEM_CODE) {
felica_lite_clear(&system->lite_info);
;
} else {
felica_area_clear(&system->root_area);
}
}
FelicaSystemList_clear(data->systems);
}
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