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[FL-2245] Introduce Mifare Classic Emulation (#1242)

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* digital signal: introduce digital signal
* nfca: add nfca signal encoder
* nfc: add mifare classic emulation scene
* nfca: add classic emulation support to lib and hal
* mifare classic: support basic read commands
* nfc: add mifare classic menu scene
* mifare classic: start parsing commands in emulation
* mifare classic: add nested auth
* nfc: fix errors
* mifare classic: add encrypt function
* nfc: fix mifare classic save
* lib hex: add hex uint64_t ASCII parser
* flipper format: add uint64 hex format support
* nfc: add mifare classic key map
* nfc: hide mifare classic keys on emulation
* mifare classic: add NACK responce
* nfc: add partial bytes support in transparent mode
* nfc: mifare classic add shadow file support
* digital signal: move arr buffer from BSS to heap
* mifare classic: process access bits more careful
* nfca: fix memory leack
* nfc: format sources
* mifare classic: cleun up

Co-authored-by: あく <alleteam@gmail.com>
This commit is contained in:
gornekich
2022-05-24 17:00:15 +03:00
committed by GitHub
parent 2017baac48
commit d31578508a
28 changed files with 1150 additions and 28 deletions
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29
applications/nfc/nfc_device.c
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@@ -7,6 +7,9 @@
static const char* nfc_file_header = "Flipper NFC device";
static const uint32_t nfc_file_version = 2;
// Protocols format versions
static const uint32_t nfc_mifare_classic_data_format_version = 1;
NfcDevice* nfc_device_alloc() {
NfcDevice* nfc_dev = malloc(sizeof(NfcDevice));
nfc_dev->storage = furi_record_open("storage");
@@ -624,6 +627,7 @@ static bool nfc_device_save_mifare_classic_data(FlipperFormat* file, NfcDevice*
// Save Mifare Classic specific data
do {
if(!flipper_format_write_comment_cstr(file, "Mifare Classic specific data")) break;
if(data->type == MfClassicType1k) {
if(!flipper_format_write_string_cstr(file, "Mifare Classic type", "1K")) break;
blocks = 64;
@@ -631,8 +635,17 @@ static bool nfc_device_save_mifare_classic_data(FlipperFormat* file, NfcDevice*
if(!flipper_format_write_string_cstr(file, "Mifare Classic type", "4K")) break;
blocks = 256;
}
if(!flipper_format_write_comment_cstr(file, "Mifare Classic blocks")) break;
if(!flipper_format_write_uint32(
file, "Data format version", &nfc_mifare_classic_data_format_version, 1))
break;
if(!flipper_format_write_comment_cstr(
file, "Key map is the bit mask indicating valid key in each sector"))
break;
if(!flipper_format_write_hex_uint64(file, "Key A map", &data->key_a_mask, 1)) break;
if(!flipper_format_write_hex_uint64(file, "Key B map", &data->key_b_mask, 1)) break;
if(!flipper_format_write_comment_cstr(file, "Mifare Classic blocks")) break;
bool block_saved = true;
for(size_t i = 0; i < blocks; i++) {
string_printf(temp_str, "Block %d", i);
@@ -654,6 +667,7 @@ static bool nfc_device_load_mifare_classic_data(FlipperFormat* file, NfcDevice*
bool parsed = false;
MfClassicData* data = &dev->dev_data.mf_classic_data;
string_t temp_str;
uint32_t data_format_version = 0;
string_init(temp_str);
uint16_t data_blocks = 0;
@@ -669,6 +683,19 @@ static bool nfc_device_load_mifare_classic_data(FlipperFormat* file, NfcDevice*
} else {
break;
}
// Read Mifare Classic format version
if(!flipper_format_read_uint32(file, "Data format version", &data_format_version, 1)) {
// Load unread sectors with zero keys access for backward compatability
if(!flipper_format_rewind(file)) break;
data->key_a_mask = 0xffffffffffffffff;
data->key_b_mask = 0xffffffffffffffff;
} else {
if(data_format_version != nfc_mifare_classic_data_format_version) break;
if(!flipper_format_read_hex_uint64(file, "Key A map", &data->key_a_mask, 1)) break;
if(!flipper_format_read_hex_uint64(file, "Key B map", &data->key_b_mask, 1)) break;
}
// Read Mifare Classic blocks
bool block_read = true;
for(size_t i = 0; i < data_blocks; i++) {