mirror of
https://github.com/DarkFlippers/unleashed-firmware
synced 2024-11-10 06:54:19 +00:00
PicoPass / iClass (#1298)
* add mdedtls for des3 implementation * add localss from RfidResearchGroup/proxmark3 * picopass reader app and rfal for communicating with picopass cards * always turn off field * close storage when keys are not found * Add mbedtls as submodule * add mbedtl_config * Switched to only including specific mbedtls files I need. Thank you @kevinwallace * cherry-pick kevinwallace sconsify * scons for mbedtls/loclass * Reset to ready state on error * unsigned FC/CN * clean FC/CN if not decoded Co-authored-by: hedger <hedger@users.noreply.github.com> Co-authored-by: あく <alleteam@gmail.com> Co-authored-by: Kevin Wallace <git+flipperzero@kevin.wallace.seattle.wa.us>
This commit is contained in:
parent
b3767d143f
commit
1975868ed8
19 changed files with 2048 additions and 0 deletions
3
.gitmodules
vendored
3
.gitmodules
vendored
|
@ -25,3 +25,6 @@
|
|||
[submodule "lib/scons"]
|
||||
path = lib/scons
|
||||
url = https://github.com/SCons/scons.git
|
||||
[submodule "lib/mbedtls"]
|
||||
path = lib/mbedtls
|
||||
url = https://github.com/Mbed-TLS/mbedtls.git
|
||||
|
|
11
applications/picopass/application.fam
Normal file
11
applications/picopass/application.fam
Normal file
|
@ -0,0 +1,11 @@
|
|||
App(
|
||||
appid="picopass",
|
||||
name="PicoPass Reader",
|
||||
apptype=FlipperAppType.PLUGIN,
|
||||
entry_point="picopass_app",
|
||||
cdefines=["APP_PICOPASS"],
|
||||
requires=["gui"],
|
||||
stack_size=1 * 1024,
|
||||
icon="A_Plugins_14",
|
||||
order=30,
|
||||
)
|
436
applications/picopass/picopass.c
Normal file
436
applications/picopass/picopass.c
Normal file
|
@ -0,0 +1,436 @@
|
|||
#include "picopass.h"
|
||||
#include <furi.h>
|
||||
#include <gui/gui.h>
|
||||
#include <input/input.h>
|
||||
#include <stdlib.h>
|
||||
#include <st25r3916.h>
|
||||
#include <rfal_analogConfig.h>
|
||||
#include <rfal_rf.h>
|
||||
#include <rfal_nfc.h>
|
||||
|
||||
#include <storage/storage.h>
|
||||
#include <lib/toolbox/path.h>
|
||||
|
||||
#define TAG "PicoPass"
|
||||
|
||||
#define PICOPASS_APP_ICLASS_KEY_PATH "/any/picopass/iclass_key.bin"
|
||||
#define PICOPASS_APP_ICLASS_DECRYPT_KEY_PATH "/any/picopass/iclass_decryptionkey.bin"
|
||||
|
||||
typedef enum {
|
||||
EventTypeTick,
|
||||
EventTypeKey,
|
||||
} EventType;
|
||||
|
||||
typedef struct {
|
||||
EventType type;
|
||||
InputEvent input;
|
||||
} PluginEvent;
|
||||
|
||||
typedef struct {
|
||||
bool valid;
|
||||
uint8_t bitLength;
|
||||
uint8_t FacilityCode;
|
||||
uint16_t CardNumber;
|
||||
} WiegandRecord;
|
||||
|
||||
typedef struct {
|
||||
bool biometrics;
|
||||
uint8_t encryption;
|
||||
uint8_t credential[8];
|
||||
uint8_t pin0[8];
|
||||
uint8_t pin1[8];
|
||||
WiegandRecord record;
|
||||
} PACS;
|
||||
|
||||
enum State { INIT, KEYS_MISSING, READY, RESULT };
|
||||
typedef struct {
|
||||
enum State state;
|
||||
PACS pacs;
|
||||
} PluginState;
|
||||
|
||||
uint8_t iclass_key[8] = {0}; // NB: not the permuted version
|
||||
uint8_t iclass_decryptionkey[16] = {0};
|
||||
ApplicationArea AA1;
|
||||
|
||||
static bool picopass_load_keys() {
|
||||
Storage* storage = furi_record_open("storage");
|
||||
File* file = storage_file_alloc(storage);
|
||||
|
||||
if(!storage_file_open(file, PICOPASS_APP_ICLASS_KEY_PATH, FSAM_READ, FSOM_OPEN_EXISTING)) {
|
||||
FURI_LOG_E(TAG, "Unable to open iClass key");
|
||||
storage_file_free(file);
|
||||
furi_record_close("storage");
|
||||
return false;
|
||||
};
|
||||
storage_file_read(file, iclass_key, sizeof(iclass_key));
|
||||
storage_file_close(file);
|
||||
FURI_LOG_D(TAG, "iClass key loaded");
|
||||
|
||||
if(!storage_file_open(
|
||||
file, PICOPASS_APP_ICLASS_DECRYPT_KEY_PATH, FSAM_READ, FSOM_OPEN_EXISTING)) {
|
||||
FURI_LOG_E(TAG, "Unable to open iClass decryption key");
|
||||
storage_file_free(file);
|
||||
furi_record_close("storage");
|
||||
return false;
|
||||
};
|
||||
storage_file_read(file, iclass_decryptionkey, sizeof(iclass_decryptionkey));
|
||||
storage_file_close(file);
|
||||
FURI_LOG_D(TAG, "iClass decryption key loaded");
|
||||
|
||||
storage_file_free(file);
|
||||
furi_record_close("storage");
|
||||
return true;
|
||||
}
|
||||
|
||||
static void render_callback(Canvas* const canvas, void* ctx) {
|
||||
const PluginState* plugin_state = acquire_mutex((ValueMutex*)ctx, 25);
|
||||
if(plugin_state == NULL) {
|
||||
return;
|
||||
}
|
||||
// border around the edge of the screen
|
||||
canvas_draw_frame(canvas, 0, 0, 128, 64);
|
||||
|
||||
canvas_set_font(canvas, FontPrimary);
|
||||
|
||||
if(plugin_state->state == INIT) {
|
||||
canvas_draw_str_aligned(canvas, 64, 32, AlignCenter, AlignTop, "Loading...");
|
||||
} else if(plugin_state->state == KEYS_MISSING) {
|
||||
canvas_draw_str_aligned(canvas, 64, 32, AlignCenter, AlignTop, "Keys missing");
|
||||
} else if(plugin_state->state == READY) {
|
||||
canvas_draw_str_aligned(canvas, 64, 32, AlignCenter, AlignTop, "Push center to scan");
|
||||
} else if(plugin_state->state == RESULT) {
|
||||
char raw_credential[25] = {0};
|
||||
sprintf(
|
||||
raw_credential,
|
||||
"%02x %02x %02x %02x %02x %02x %02x %02x",
|
||||
plugin_state->pacs.credential[0],
|
||||
plugin_state->pacs.credential[1],
|
||||
plugin_state->pacs.credential[2],
|
||||
plugin_state->pacs.credential[3],
|
||||
plugin_state->pacs.credential[4],
|
||||
plugin_state->pacs.credential[5],
|
||||
plugin_state->pacs.credential[6],
|
||||
plugin_state->pacs.credential[7]);
|
||||
canvas_draw_str_aligned(canvas, 64, 34, AlignCenter, AlignTop, raw_credential);
|
||||
|
||||
if(plugin_state->pacs.record.valid) {
|
||||
char parsed[20] = {0};
|
||||
sprintf(
|
||||
parsed,
|
||||
"FC: %03u CN: %05u",
|
||||
plugin_state->pacs.record.FacilityCode,
|
||||
plugin_state->pacs.record.CardNumber);
|
||||
canvas_draw_str_aligned(canvas, 64, 32, AlignCenter, AlignBottom, parsed);
|
||||
}
|
||||
}
|
||||
|
||||
release_mutex((ValueMutex*)ctx, plugin_state);
|
||||
}
|
||||
|
||||
static void input_callback(InputEvent* input_event, osMessageQueueId_t event_queue) {
|
||||
furi_assert(event_queue);
|
||||
|
||||
PluginEvent event = {.type = EventTypeKey, .input = *input_event};
|
||||
osMessageQueuePut(event_queue, &event, 0, osWaitForever);
|
||||
}
|
||||
|
||||
static void picopass_state_init(PluginState* const plugin_state) {
|
||||
plugin_state->state = INIT;
|
||||
if(picopass_load_keys()) {
|
||||
plugin_state->state = READY;
|
||||
} else {
|
||||
plugin_state->state = KEYS_MISSING;
|
||||
}
|
||||
}
|
||||
|
||||
ReturnCode decrypt(uint8_t* enc_data, uint8_t* dec_data) {
|
||||
uint8_t key[32] = {0};
|
||||
memcpy(key, iclass_decryptionkey, sizeof(iclass_decryptionkey));
|
||||
mbedtls_des3_context ctx;
|
||||
mbedtls_des3_init(&ctx);
|
||||
mbedtls_des3_set2key_dec(&ctx, key);
|
||||
mbedtls_des3_crypt_ecb(&ctx, enc_data, dec_data);
|
||||
mbedtls_des3_free(&ctx);
|
||||
return ERR_NONE;
|
||||
}
|
||||
|
||||
ReturnCode parseWiegand(uint8_t* data, WiegandRecord* record) {
|
||||
uint32_t* halves = (uint32_t*)data;
|
||||
if(halves[0] == 0) {
|
||||
uint8_t leading0s = __builtin_clz(REVERSE_BYTES_U32(halves[1]));
|
||||
record->bitLength = 31 - leading0s;
|
||||
} else {
|
||||
uint8_t leading0s = __builtin_clz(REVERSE_BYTES_U32(halves[0]));
|
||||
record->bitLength = 63 - leading0s;
|
||||
}
|
||||
FURI_LOG_D(TAG, "bitLength: %d", record->bitLength);
|
||||
|
||||
if(record->bitLength == 26) {
|
||||
uint8_t* v4 = data + 4;
|
||||
v4[0] = 0;
|
||||
|
||||
uint32_t bot = v4[3] | (v4[2] << 8) | (v4[1] << 16) | (v4[0] << 24);
|
||||
|
||||
record->CardNumber = (bot >> 1) & 0xFFFF;
|
||||
record->FacilityCode = (bot >> 17) & 0xFF;
|
||||
record->valid = true;
|
||||
} else {
|
||||
record->CardNumber = 0;
|
||||
record->FacilityCode = 0;
|
||||
record->valid = false;
|
||||
}
|
||||
return ERR_NONE;
|
||||
}
|
||||
|
||||
ReturnCode disable_field(ReturnCode rc) {
|
||||
st25r3916TxRxOff();
|
||||
rfalLowPowerModeStart();
|
||||
return rc;
|
||||
}
|
||||
|
||||
ReturnCode picopass_read_card(ApplicationArea* AA1) {
|
||||
rfalPicoPassIdentifyRes idRes;
|
||||
rfalPicoPassSelectRes selRes;
|
||||
rfalPicoPassReadCheckRes rcRes;
|
||||
rfalPicoPassCheckRes chkRes;
|
||||
|
||||
ReturnCode err;
|
||||
|
||||
uint8_t div_key[8] = {0};
|
||||
uint8_t mac[4] = {0};
|
||||
uint8_t ccnr[12] = {0};
|
||||
|
||||
st25r3916TxRxOn();
|
||||
rfalLowPowerModeStop();
|
||||
rfalWorker();
|
||||
err = rfalPicoPassPollerInitialize();
|
||||
if(err != ERR_NONE) {
|
||||
FURI_LOG_E(TAG, "rfalPicoPassPollerInitialize error %d\n", err);
|
||||
return disable_field(err);
|
||||
}
|
||||
|
||||
err = rfalFieldOnAndStartGT();
|
||||
if(err != ERR_NONE) {
|
||||
FURI_LOG_E(TAG, "rfalFieldOnAndStartGT error %d\n", err);
|
||||
return disable_field(err);
|
||||
}
|
||||
|
||||
err = rfalPicoPassPollerCheckPresence();
|
||||
if(err != ERR_RF_COLLISION) {
|
||||
FURI_LOG_E(TAG, "rfalPicoPassPollerCheckPresence error %d\n", err);
|
||||
return disable_field(err);
|
||||
}
|
||||
|
||||
err = rfalPicoPassPollerIdentify(&idRes);
|
||||
if(err != ERR_NONE) {
|
||||
FURI_LOG_E(TAG, "rfalPicoPassPollerIdentify error %d\n", err);
|
||||
return disable_field(err);
|
||||
}
|
||||
|
||||
err = rfalPicoPassPollerSelect(idRes.CSN, &selRes);
|
||||
if(err != ERR_NONE) {
|
||||
FURI_LOG_E(TAG, "rfalPicoPassPollerSelect error %d\n", err);
|
||||
return disable_field(err);
|
||||
}
|
||||
|
||||
err = rfalPicoPassPollerReadCheck(&rcRes);
|
||||
if(err != ERR_NONE) {
|
||||
FURI_LOG_E(TAG, "rfalPicoPassPollerReadCheck error %d", err);
|
||||
return disable_field(err);
|
||||
}
|
||||
memcpy(ccnr, rcRes.CCNR, sizeof(rcRes.CCNR)); // last 4 bytes left 0
|
||||
|
||||
diversifyKey(selRes.CSN, iclass_key, div_key);
|
||||
opt_doReaderMAC(ccnr, div_key, mac);
|
||||
|
||||
err = rfalPicoPassPollerCheck(mac, &chkRes);
|
||||
if(err != ERR_NONE) {
|
||||
FURI_LOG_E(TAG, "rfalPicoPassPollerCheck error %d", err);
|
||||
return disable_field(err);
|
||||
}
|
||||
|
||||
for(size_t i = 0; i < 4; i++) {
|
||||
FURI_LOG_D(TAG, "rfalPicoPassPollerReadBlock block %d", i + 6);
|
||||
err = rfalPicoPassPollerReadBlock(i + 6, &(AA1->block[i]));
|
||||
if(err != ERR_NONE) {
|
||||
FURI_LOG_E(TAG, "rfalPicoPassPollerReadBlock error %d", err);
|
||||
return disable_field(err);
|
||||
}
|
||||
}
|
||||
return disable_field(ERR_NONE);
|
||||
}
|
||||
|
||||
int32_t picopass_app(void* p) {
|
||||
UNUSED(p);
|
||||
osMessageQueueId_t event_queue = osMessageQueueNew(8, sizeof(PluginEvent), NULL);
|
||||
|
||||
PluginState* plugin_state = malloc(sizeof(PluginState));
|
||||
picopass_state_init(plugin_state);
|
||||
ValueMutex state_mutex;
|
||||
if(!init_mutex(&state_mutex, plugin_state, sizeof(PluginState))) {
|
||||
FURI_LOG_E("Hello_world", "cannot create mutex\r\n");
|
||||
free(plugin_state);
|
||||
return 255;
|
||||
}
|
||||
|
||||
// Set system callbacks
|
||||
ViewPort* view_port = view_port_alloc();
|
||||
view_port_draw_callback_set(view_port, render_callback, &state_mutex);
|
||||
view_port_input_callback_set(view_port, input_callback, event_queue);
|
||||
|
||||
// Open GUI and register view_port
|
||||
Gui* gui = furi_record_open("gui");
|
||||
gui_add_view_port(gui, view_port, GuiLayerFullscreen);
|
||||
|
||||
PluginEvent event;
|
||||
ReturnCode err;
|
||||
for(bool processing = true; processing;) {
|
||||
osStatus_t event_status = osMessageQueueGet(event_queue, &event, NULL, 100);
|
||||
PluginState* plugin_state = (PluginState*)acquire_mutex_block(&state_mutex);
|
||||
|
||||
if(event_status == osOK) {
|
||||
// press events
|
||||
if(event.type == EventTypeKey) {
|
||||
if(event.input.type == InputTypePress) {
|
||||
switch(event.input.key) {
|
||||
case InputKeyUp:
|
||||
FURI_LOG_D(TAG, "Input Up");
|
||||
break;
|
||||
case InputKeyDown:
|
||||
FURI_LOG_D(TAG, "Input Down");
|
||||
break;
|
||||
case InputKeyRight:
|
||||
FURI_LOG_D(TAG, "Input Right");
|
||||
break;
|
||||
case InputKeyLeft:
|
||||
FURI_LOG_D(TAG, "Input Left");
|
||||
break;
|
||||
case InputKeyOk:
|
||||
FURI_LOG_D(TAG, "Input OK");
|
||||
err = picopass_read_card(&AA1);
|
||||
if(err != ERR_NONE) {
|
||||
FURI_LOG_E(TAG, "picopass_read_card error %d", err);
|
||||
plugin_state->state = READY;
|
||||
break;
|
||||
}
|
||||
FURI_LOG_D(TAG, "read OK");
|
||||
|
||||
plugin_state->pacs.biometrics = AA1.block[0].data[4];
|
||||
plugin_state->pacs.encryption = AA1.block[0].data[7];
|
||||
if(plugin_state->pacs.encryption == 0x17) {
|
||||
FURI_LOG_D(TAG, "3DES Encrypted");
|
||||
err = decrypt(AA1.block[1].data, plugin_state->pacs.credential);
|
||||
if(err != ERR_NONE) {
|
||||
FURI_LOG_E(TAG, "decrypt error %d", err);
|
||||
break;
|
||||
}
|
||||
FURI_LOG_D(TAG, "Decrypted 7");
|
||||
|
||||
err = decrypt(AA1.block[2].data, plugin_state->pacs.pin0);
|
||||
if(err != ERR_NONE) {
|
||||
FURI_LOG_E(TAG, "decrypt error %d", err);
|
||||
break;
|
||||
}
|
||||
FURI_LOG_D(TAG, "Decrypted 8");
|
||||
|
||||
err = decrypt(AA1.block[3].data, plugin_state->pacs.pin1);
|
||||
if(err != ERR_NONE) {
|
||||
FURI_LOG_E(TAG, "decrypt error %d", err);
|
||||
break;
|
||||
}
|
||||
FURI_LOG_D(TAG, "Decrypted 9");
|
||||
} else if(plugin_state->pacs.encryption == 0x14) {
|
||||
FURI_LOG_D(TAG, "No Encryption");
|
||||
memcpy(
|
||||
plugin_state->pacs.credential,
|
||||
AA1.block[1].data,
|
||||
RFAL_PICOPASS_MAX_BLOCK_LEN);
|
||||
memcpy(
|
||||
plugin_state->pacs.pin0,
|
||||
AA1.block[2].data,
|
||||
RFAL_PICOPASS_MAX_BLOCK_LEN);
|
||||
memcpy(
|
||||
plugin_state->pacs.pin1,
|
||||
AA1.block[3].data,
|
||||
RFAL_PICOPASS_MAX_BLOCK_LEN);
|
||||
} else if(plugin_state->pacs.encryption == 0x15) {
|
||||
FURI_LOG_D(TAG, "DES Encrypted");
|
||||
} else {
|
||||
FURI_LOG_D(TAG, "Unknown encryption");
|
||||
break;
|
||||
}
|
||||
|
||||
FURI_LOG_D(
|
||||
TAG,
|
||||
"credential %02x%02x%02x%02x%02x%02x%02x%02x",
|
||||
plugin_state->pacs.credential[0],
|
||||
plugin_state->pacs.credential[1],
|
||||
plugin_state->pacs.credential[2],
|
||||
plugin_state->pacs.credential[3],
|
||||
plugin_state->pacs.credential[4],
|
||||
plugin_state->pacs.credential[5],
|
||||
plugin_state->pacs.credential[6],
|
||||
plugin_state->pacs.credential[7]);
|
||||
FURI_LOG_D(
|
||||
TAG,
|
||||
"pin0 %02x%02x%02x%02x%02x%02x%02x%02x",
|
||||
plugin_state->pacs.pin0[0],
|
||||
plugin_state->pacs.pin0[1],
|
||||
plugin_state->pacs.pin0[2],
|
||||
plugin_state->pacs.pin0[3],
|
||||
plugin_state->pacs.pin0[4],
|
||||
plugin_state->pacs.pin0[5],
|
||||
plugin_state->pacs.pin0[6],
|
||||
plugin_state->pacs.pin0[7]);
|
||||
FURI_LOG_D(
|
||||
TAG,
|
||||
"pin1 %02x%02x%02x%02x%02x%02x%02x%02x",
|
||||
plugin_state->pacs.pin1[0],
|
||||
plugin_state->pacs.pin1[1],
|
||||
plugin_state->pacs.pin1[2],
|
||||
plugin_state->pacs.pin1[3],
|
||||
plugin_state->pacs.pin1[4],
|
||||
plugin_state->pacs.pin1[5],
|
||||
plugin_state->pacs.pin1[6],
|
||||
plugin_state->pacs.pin1[7]);
|
||||
|
||||
err = parseWiegand(
|
||||
plugin_state->pacs.credential, &plugin_state->pacs.record);
|
||||
if(err != ERR_NONE) {
|
||||
FURI_LOG_E(TAG, "parse error %d", err);
|
||||
break;
|
||||
}
|
||||
if(plugin_state->pacs.record.valid) {
|
||||
FURI_LOG_D(
|
||||
TAG,
|
||||
"FC: %03d CN: %05d",
|
||||
plugin_state->pacs.record.FacilityCode,
|
||||
plugin_state->pacs.record.CardNumber);
|
||||
}
|
||||
plugin_state->state = RESULT;
|
||||
|
||||
break;
|
||||
case InputKeyBack:
|
||||
FURI_LOG_D(TAG, "Input Back");
|
||||
processing = false;
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
} else {
|
||||
// FURI_LOG_D(TAG, "osMessageQueue: event timeout");
|
||||
// event timeout
|
||||
}
|
||||
|
||||
view_port_update(view_port);
|
||||
release_mutex(&state_mutex, plugin_state);
|
||||
}
|
||||
|
||||
view_port_enabled_set(view_port, false);
|
||||
gui_remove_view_port(gui, view_port);
|
||||
furi_record_close("gui");
|
||||
view_port_free(view_port);
|
||||
osMessageQueueDelete(event_queue);
|
||||
|
||||
return 0;
|
||||
}
|
9
applications/picopass/picopass.h
Normal file
9
applications/picopass/picopass.h
Normal file
|
@ -0,0 +1,9 @@
|
|||
#pragma once
|
||||
|
||||
#include <rfal_picopass.h>
|
||||
#include <loclass/optimized_ikeys.h>
|
||||
#include <loclass/optimized_cipher.h>
|
||||
#include <mbedtls/des.h>
|
||||
|
||||
#define PP_MAX_DUMP_SIZE 1024
|
||||
#define FURI_HAL_PICOPASS_UID_MAX_LEN 10
|
|
@ -195,6 +195,8 @@ fwelf = fwenv["FW_ELF"] = fwenv.Program(
|
|||
# 2nd round
|
||||
"flipperformat",
|
||||
"toolbox",
|
||||
"mbedtls",
|
||||
"loclass",
|
||||
],
|
||||
)
|
||||
|
||||
|
|
|
@ -72,6 +72,8 @@ libs = env.BuildModules(
|
|||
"subghz",
|
||||
"appframe",
|
||||
"misc",
|
||||
"mbedtls",
|
||||
"loclass",
|
||||
],
|
||||
)
|
||||
|
||||
|
|
65
lib/ST25RFAL002/include/rfal_picopass.h
Normal file
65
lib/ST25RFAL002/include/rfal_picopass.h
Normal file
|
@ -0,0 +1,65 @@
|
|||
|
||||
#ifndef RFAL_PICOPASS_H
|
||||
#define RFAL_PICOPASS_H
|
||||
|
||||
/*
|
||||
******************************************************************************
|
||||
* INCLUDES
|
||||
******************************************************************************
|
||||
*/
|
||||
#include "platform.h"
|
||||
#include "rfal_rf.h"
|
||||
#include "st_errno.h"
|
||||
|
||||
#define RFAL_PICOPASS_UID_LEN 8
|
||||
#define RFAL_PICOPASS_MAX_BLOCK_LEN 8
|
||||
|
||||
#define RFAL_PICOPASS_TXRX_FLAGS \
|
||||
(RFAL_TXRX_FLAGS_CRC_TX_MANUAL | RFAL_TXRX_FLAGS_AGC_ON | RFAL_TXRX_FLAGS_PAR_RX_REMV | \
|
||||
RFAL_TXRX_FLAGS_CRC_RX_KEEP)
|
||||
|
||||
enum {
|
||||
RFAL_PICOPASS_CMD_ACTALL = 0x0A,
|
||||
RFAL_PICOPASS_CMD_IDENTIFY = 0x0C,
|
||||
RFAL_PICOPASS_CMD_SELECT = 0x81,
|
||||
RFAL_PICOPASS_CMD_READCHECK = 0x88,
|
||||
RFAL_PICOPASS_CMD_CHECK = 0x05,
|
||||
RFAL_PICOPASS_CMD_READ = 0x0C,
|
||||
};
|
||||
|
||||
typedef struct {
|
||||
uint8_t CSN[RFAL_PICOPASS_UID_LEN]; // Anti-collision CSN
|
||||
uint8_t crc[2];
|
||||
} rfalPicoPassIdentifyRes;
|
||||
|
||||
typedef struct {
|
||||
uint8_t CSN[RFAL_PICOPASS_UID_LEN]; // Real CSN
|
||||
uint8_t crc[2];
|
||||
} rfalPicoPassSelectRes;
|
||||
|
||||
typedef struct {
|
||||
uint8_t CCNR[8];
|
||||
} rfalPicoPassReadCheckRes;
|
||||
|
||||
typedef struct {
|
||||
uint8_t mac[4];
|
||||
} rfalPicoPassCheckRes;
|
||||
|
||||
typedef struct {
|
||||
uint8_t data[RFAL_PICOPASS_MAX_BLOCK_LEN];
|
||||
uint8_t crc[2];
|
||||
} rfalPicoPassReadBlockRes;
|
||||
|
||||
typedef struct {
|
||||
rfalPicoPassReadBlockRes block[4];
|
||||
} ApplicationArea;
|
||||
|
||||
ReturnCode rfalPicoPassPollerInitialize(void);
|
||||
ReturnCode rfalPicoPassPollerCheckPresence(void);
|
||||
ReturnCode rfalPicoPassPollerIdentify(rfalPicoPassIdentifyRes* idRes);
|
||||
ReturnCode rfalPicoPassPollerSelect(uint8_t* csn, rfalPicoPassSelectRes* selRes);
|
||||
ReturnCode rfalPicoPassPollerReadCheck(rfalPicoPassReadCheckRes* rcRes);
|
||||
ReturnCode rfalPicoPassPollerCheck(uint8_t* mac, rfalPicoPassCheckRes* chkRes);
|
||||
ReturnCode rfalPicoPassPollerReadBlock(uint8_t blockNum, rfalPicoPassReadBlockRes* readRes);
|
||||
|
||||
#endif /* RFAL_PICOPASS_H */
|
172
lib/ST25RFAL002/source/rfal_picopass.c
Normal file
172
lib/ST25RFAL002/source/rfal_picopass.c
Normal file
|
@ -0,0 +1,172 @@
|
|||
|
||||
#include "rfal_picopass.h"
|
||||
#include "utils.h"
|
||||
|
||||
typedef struct {
|
||||
uint8_t CMD;
|
||||
uint8_t CSN[RFAL_PICOPASS_UID_LEN];
|
||||
} rfalPicoPassSelectReq;
|
||||
|
||||
typedef struct {
|
||||
uint8_t CMD;
|
||||
uint8_t null[4];
|
||||
uint8_t mac[4];
|
||||
} rfalPicoPassCheckReq;
|
||||
|
||||
ReturnCode rfalPicoPassPollerInitialize(void) {
|
||||
ReturnCode ret;
|
||||
|
||||
EXIT_ON_ERR(ret, rfalSetMode(RFAL_MODE_POLL_PICOPASS, RFAL_BR_26p48, RFAL_BR_26p48));
|
||||
rfalSetErrorHandling(RFAL_ERRORHANDLING_NFC);
|
||||
|
||||
rfalSetGT(RFAL_GT_PICOPASS);
|
||||
rfalSetFDTListen(RFAL_FDT_LISTEN_PICOPASS_POLLER);
|
||||
rfalSetFDTPoll(RFAL_FDT_POLL_PICOPASS_POLLER);
|
||||
|
||||
return ERR_NONE;
|
||||
}
|
||||
|
||||
ReturnCode rfalPicoPassPollerCheckPresence(void) {
|
||||
ReturnCode ret;
|
||||
uint8_t txBuf[1] = {RFAL_PICOPASS_CMD_ACTALL};
|
||||
uint8_t rxBuf[32] = {0};
|
||||
uint16_t recvLen = 0;
|
||||
uint32_t flags = RFAL_PICOPASS_TXRX_FLAGS;
|
||||
uint32_t fwt = rfalConvMsTo1fc(20);
|
||||
|
||||
ret = rfalTransceiveBlockingTxRx(txBuf, 1, rxBuf, 32, &recvLen, flags, fwt);
|
||||
return ret;
|
||||
}
|
||||
|
||||
ReturnCode rfalPicoPassPollerIdentify(rfalPicoPassIdentifyRes* idRes) {
|
||||
ReturnCode ret;
|
||||
|
||||
uint8_t txBuf[1] = {RFAL_PICOPASS_CMD_IDENTIFY};
|
||||
uint16_t recvLen = 0;
|
||||
uint32_t flags = RFAL_PICOPASS_TXRX_FLAGS;
|
||||
uint32_t fwt = rfalConvMsTo1fc(20);
|
||||
|
||||
ret = rfalTransceiveBlockingTxRx(
|
||||
txBuf,
|
||||
sizeof(txBuf),
|
||||
(uint8_t*)idRes,
|
||||
sizeof(rfalPicoPassIdentifyRes),
|
||||
&recvLen,
|
||||
flags,
|
||||
fwt);
|
||||
// printf("identify rx: %d %s\n", recvLen, hex2Str(idRes->CSN, RFAL_PICOPASS_UID_LEN));
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
ReturnCode rfalPicoPassPollerSelect(uint8_t* csn, rfalPicoPassSelectRes* selRes) {
|
||||
ReturnCode ret;
|
||||
|
||||
rfalPicoPassSelectReq selReq;
|
||||
selReq.CMD = RFAL_PICOPASS_CMD_SELECT;
|
||||
ST_MEMCPY(selReq.CSN, csn, RFAL_PICOPASS_UID_LEN);
|
||||
uint16_t recvLen = 0;
|
||||
uint32_t flags = RFAL_PICOPASS_TXRX_FLAGS;
|
||||
uint32_t fwt = rfalConvMsTo1fc(20);
|
||||
|
||||
ret = rfalTransceiveBlockingTxRx(
|
||||
(uint8_t*)&selReq,
|
||||
sizeof(rfalPicoPassSelectReq),
|
||||
(uint8_t*)selRes,
|
||||
sizeof(rfalPicoPassSelectRes),
|
||||
&recvLen,
|
||||
flags,
|
||||
fwt);
|
||||
// printf("select rx: %d %s\n", recvLen, hex2Str(selRes->CSN, RFAL_PICOPASS_UID_LEN));
|
||||
if(ret == ERR_TIMEOUT) {
|
||||
return ERR_NONE;
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
ReturnCode rfalPicoPassPollerReadCheck(rfalPicoPassReadCheckRes* rcRes) {
|
||||
ReturnCode ret;
|
||||
uint8_t txBuf[2] = {RFAL_PICOPASS_CMD_READCHECK, 0x02};
|
||||
uint16_t recvLen = 0;
|
||||
uint32_t flags = RFAL_PICOPASS_TXRX_FLAGS;
|
||||
uint32_t fwt = rfalConvMsTo1fc(20);
|
||||
|
||||
ret = rfalTransceiveBlockingTxRx(
|
||||
txBuf,
|
||||
sizeof(txBuf),
|
||||
(uint8_t*)rcRes,
|
||||
sizeof(rfalPicoPassReadCheckRes),
|
||||
&recvLen,
|
||||
flags,
|
||||
fwt);
|
||||
// printf("readcheck rx: %d %s\n", recvLen, hex2Str(rcRes->CCNR, 8));
|
||||
|
||||
if(ret == ERR_CRC) {
|
||||
return ERR_NONE;
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
ReturnCode rfalPicoPassPollerCheck(uint8_t* mac, rfalPicoPassCheckRes* chkRes) {
|
||||
ReturnCode ret;
|
||||
rfalPicoPassCheckReq chkReq;
|
||||
chkReq.CMD = RFAL_PICOPASS_CMD_CHECK;
|
||||
ST_MEMCPY(chkReq.mac, mac, 4);
|
||||
ST_MEMSET(chkReq.null, 0, 4);
|
||||
uint16_t recvLen = 0;
|
||||
uint32_t flags = RFAL_PICOPASS_TXRX_FLAGS;
|
||||
uint32_t fwt = rfalConvMsTo1fc(20);
|
||||
|
||||
// printf("check tx: %s\n", hex2Str((uint8_t *)&chkReq, sizeof(rfalPicoPassCheckReq)));
|
||||
ret = rfalTransceiveBlockingTxRx(
|
||||
(uint8_t*)&chkReq,
|
||||
sizeof(rfalPicoPassCheckReq),
|
||||
(uint8_t*)chkRes,
|
||||
sizeof(rfalPicoPassCheckRes),
|
||||
&recvLen,
|
||||
flags,
|
||||
fwt);
|
||||
// printf("check rx: %d %s\n", recvLen, hex2Str(chkRes->mac, 4));
|
||||
if(ret == ERR_CRC) {
|
||||
return ERR_NONE;
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
ReturnCode rfalPicoPassPollerReadBlock(uint8_t blockNum, rfalPicoPassReadBlockRes* readRes) {
|
||||
ReturnCode ret;
|
||||
/*
|
||||
* ./reveng -w 16 -s 0c07cc47 0c064556 0c083bbf 0c09b2ae
|
||||
width=16 poly=0x1021 init=0xd924 refin=true refout=true xorout=0x0000 check=0x1329 residue=0x0000 name=(none)
|
||||
0c 06 45 56
|
||||
0c 07 cc 47
|
||||
0c 08 3b bf
|
||||
0c 09 b2 ae
|
||||
*/
|
||||
|
||||
uint8_t readCmds[4][4] = {
|
||||
{RFAL_PICOPASS_CMD_READ, 6, 0x45, 0x56},
|
||||
{RFAL_PICOPASS_CMD_READ, 7, 0xcc, 0x47},
|
||||
{RFAL_PICOPASS_CMD_READ, 8, 0x3b, 0xbf},
|
||||
{RFAL_PICOPASS_CMD_READ, 9, 0xb2, 0xae}};
|
||||
|
||||
uint8_t* txBuf = readCmds[blockNum - 6];
|
||||
uint16_t recvLen = 0;
|
||||
uint32_t flags = RFAL_PICOPASS_TXRX_FLAGS;
|
||||
uint32_t fwt = rfalConvMsTo1fc(20);
|
||||
|
||||
ret = rfalTransceiveBlockingTxRx(
|
||||
txBuf,
|
||||
sizeof(txBuf),
|
||||
(uint8_t*)readRes,
|
||||
sizeof(rfalPicoPassReadBlockRes),
|
||||
&recvLen,
|
||||
flags,
|
||||
fwt);
|
||||
// printf("check rx: %d %s\n", recvLen, hex2Str(readRes->data, RFAL_PICOPASS_MAX_BLOCK_LEN));
|
||||
|
||||
return ret;
|
||||
}
|
19
lib/loclass.scons
Normal file
19
lib/loclass.scons
Normal file
|
@ -0,0 +1,19 @@
|
|||
Import("env")
|
||||
|
||||
env.Append(
|
||||
CPPPATH=[
|
||||
"#/lib/loclass",
|
||||
],
|
||||
CPPDEFINES=[
|
||||
],
|
||||
)
|
||||
|
||||
|
||||
libenv = env.Clone(FW_LIB_NAME="loclass")
|
||||
libenv.ApplyLibFlags()
|
||||
|
||||
sources = Glob("loclass/*.c", source=True)
|
||||
|
||||
lib = libenv.StaticLibrary("${FW_LIB_NAME}", sources)
|
||||
libenv.Install("${LIB_DIST_DIR}", lib)
|
||||
Return("lib")
|
338
lib/loclass/optimized_cipher.c
Normal file
338
lib/loclass/optimized_cipher.c
Normal file
|
@ -0,0 +1,338 @@
|
|||
//-----------------------------------------------------------------------------
|
||||
// Borrowed initially from https://github.com/holiman/loclass
|
||||
// Copyright (C) 2014 Martin Holst Swende
|
||||
// Copyright (C) Proxmark3 contributors. See AUTHORS.md for details.
|
||||
//
|
||||
// This program is free software: you can redistribute it and/or modify
|
||||
// it under the terms of the GNU General Public License as published by
|
||||
// the Free Software Foundation, either version 3 of the License, or
|
||||
// (at your option) any later version.
|
||||
//
|
||||
// This program is distributed in the hope that it will be useful,
|
||||
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
// GNU General Public License for more details.
|
||||
//
|
||||
// See LICENSE.txt for the text of the license.
|
||||
//-----------------------------------------------------------------------------
|
||||
// WARNING
|
||||
//
|
||||
// THIS CODE IS CREATED FOR EXPERIMENTATION AND EDUCATIONAL USE ONLY.
|
||||
//
|
||||
// USAGE OF THIS CODE IN OTHER WAYS MAY INFRINGE UPON THE INTELLECTUAL
|
||||
// PROPERTY OF OTHER PARTIES, SUCH AS INSIDE SECURE AND HID GLOBAL,
|
||||
// AND MAY EXPOSE YOU TO AN INFRINGEMENT ACTION FROM THOSE PARTIES.
|
||||
//
|
||||
// THIS CODE SHOULD NEVER BE USED TO INFRINGE PATENTS OR INTELLECTUAL PROPERTY RIGHTS.
|
||||
//-----------------------------------------------------------------------------
|
||||
// It is a reconstruction of the cipher engine used in iClass, and RFID techology.
|
||||
//
|
||||
// The implementation is based on the work performed by
|
||||
// Flavio D. Garcia, Gerhard de Koning Gans, Roel Verdult and
|
||||
// Milosch Meriac in the paper "Dismantling IClass".
|
||||
//-----------------------------------------------------------------------------
|
||||
/*
|
||||
This file contains an optimized version of the MAC-calculation algorithm. Some measurements on
|
||||
a std laptop showed it runs in about 1/3 of the time:
|
||||
|
||||
Std: 0.428962
|
||||
Opt: 0.151609
|
||||
|
||||
Additionally, it is self-reliant, not requiring e.g. bitstreams from the cipherutils, thus can
|
||||
be easily dropped into a code base.
|
||||
|
||||
The optimizations have been performed in the following steps:
|
||||
* Parameters passed by reference instead of by value.
|
||||
* Iteration instead of recursion, un-nesting recursive loops into for-loops.
|
||||
* Handling of bytes instead of individual bits, for less shuffling and masking
|
||||
* Less creation of "objects", structs, and instead reuse of alloc:ed memory
|
||||
* Inlining some functions via #define:s
|
||||
|
||||
As a consequence, this implementation is less generic. Also, I haven't bothered documenting this.
|
||||
For a thorough documentation, check out the MAC-calculation within cipher.c instead.
|
||||
|
||||
-- MHS 2015
|
||||
**/
|
||||
|
||||
/**
|
||||
|
||||
The runtime of opt_doTagMAC_2() with the MHS optimized version was 403 microseconds on Proxmark3.
|
||||
This was still to slow for some newer readers which didn't want to wait that long.
|
||||
|
||||
Further optimizations to speedup the MAC calculations:
|
||||
* Optimized opt_Tt logic
|
||||
* Look up table for opt_select
|
||||
* Removing many unnecessary bit maskings (& 0x1)
|
||||
* updating state in place instead of alternating use of a second state structure
|
||||
* remove the necessity to reverse bits of input and output bytes
|
||||
|
||||
opt_doTagMAC_2() now completes in 270 microseconds.
|
||||
|
||||
-- piwi 2019
|
||||
**/
|
||||
|
||||
/**
|
||||
add the possibility to do iCLASS on device only
|
||||
-- iceman 2020
|
||||
**/
|
||||
|
||||
#include "optimized_cipher.h"
|
||||
#include "optimized_elite.h"
|
||||
#include "optimized_ikeys.h"
|
||||
#include "optimized_cipherutils.h"
|
||||
|
||||
static const uint8_t opt_select_LUT[256] = {
|
||||
00, 03, 02, 01, 02, 03, 00, 01, 04, 07, 07, 04, 06, 07, 05, 04,
|
||||
01, 02, 03, 00, 02, 03, 00, 01, 05, 06, 06, 05, 06, 07, 05, 04,
|
||||
06, 05, 04, 07, 04, 05, 06, 07, 06, 05, 05, 06, 04, 05, 07, 06,
|
||||
07, 04, 05, 06, 04, 05, 06, 07, 07, 04, 04, 07, 04, 05, 07, 06,
|
||||
06, 05, 04, 07, 04, 05, 06, 07, 02, 01, 01, 02, 00, 01, 03, 02,
|
||||
03, 00, 01, 02, 00, 01, 02, 03, 07, 04, 04, 07, 04, 05, 07, 06,
|
||||
00, 03, 02, 01, 02, 03, 00, 01, 00, 03, 03, 00, 02, 03, 01, 00,
|
||||
05, 06, 07, 04, 06, 07, 04, 05, 05, 06, 06, 05, 06, 07, 05, 04,
|
||||
02, 01, 00, 03, 00, 01, 02, 03, 06, 05, 05, 06, 04, 05, 07, 06,
|
||||
03, 00, 01, 02, 00, 01, 02, 03, 07, 04, 04, 07, 04, 05, 07, 06,
|
||||
02, 01, 00, 03, 00, 01, 02, 03, 02, 01, 01, 02, 00, 01, 03, 02,
|
||||
03, 00, 01, 02, 00, 01, 02, 03, 03, 00, 00, 03, 00, 01, 03, 02,
|
||||
04, 07, 06, 05, 06, 07, 04, 05, 00, 03, 03, 00, 02, 03, 01, 00,
|
||||
01, 02, 03, 00, 02, 03, 00, 01, 05, 06, 06, 05, 06, 07, 05, 04,
|
||||
04, 07, 06, 05, 06, 07, 04, 05, 04, 07, 07, 04, 06, 07, 05, 04,
|
||||
01, 02, 03, 00, 02, 03, 00, 01, 01, 02, 02, 01, 02, 03, 01, 00
|
||||
};
|
||||
|
||||
/********************** the table above has been generated with this code: ********
|
||||
#include "util.h"
|
||||
static void init_opt_select_LUT(void) {
|
||||
for (int r = 0; r < 256; r++) {
|
||||
uint8_t r_ls2 = r << 2;
|
||||
uint8_t r_and_ls2 = r & r_ls2;
|
||||
uint8_t r_or_ls2 = r | r_ls2;
|
||||
uint8_t z0 = (r_and_ls2 >> 5) ^ ((r & ~r_ls2) >> 4) ^ ( r_or_ls2 >> 3);
|
||||
uint8_t z1 = (r_or_ls2 >> 6) ^ ( r_or_ls2 >> 1) ^ (r >> 5) ^ r;
|
||||
uint8_t z2 = ((r & ~r_ls2) >> 4) ^ (r_and_ls2 >> 3) ^ r;
|
||||
opt_select_LUT[r] = (z0 & 4) | (z1 & 2) | (z2 & 1);
|
||||
}
|
||||
print_result("", opt_select_LUT, 256);
|
||||
}
|
||||
***********************************************************************************/
|
||||
|
||||
#define opt__select(x,y,r) (4 & (((r & (r << 2)) >> 5) ^ ((r & ~(r << 2)) >> 4) ^ ( (r | r << 2) >> 3)))\
|
||||
|(2 & (((r | r << 2) >> 6) ^ ( (r | r << 2) >> 1) ^ (r >> 5) ^ r ^ ((x^y) << 1)))\
|
||||
|(1 & (((r & ~(r << 2)) >> 4) ^ ((r & (r << 2)) >> 3) ^ r ^ x))
|
||||
|
||||
/*
|
||||
* Some background on the expression above can be found here...
|
||||
uint8_t xopt__select(bool x, bool y, uint8_t r)
|
||||
{
|
||||
|
||||
//r: r0 r1 r2 r3 r4 r5 r6 r7
|
||||
//r_ls2: r2 r3 r4 r5 r6 r7 0 0
|
||||
// z0
|
||||
// z1
|
||||
|
||||
// uint8_t z0 = (r0 & r2) ^ (r1 & ~r3) ^ (r2 | r4); // <-- original
|
||||
uint8_t z0 = (r_and_ls2 >> 5) ^ ((r & ~r_ls2) >> 4) ^ ( r_or_ls2 >> 3);
|
||||
|
||||
// uint8_t z1 = (r0 | r2) ^ ( r5 | r7) ^ r1 ^ r6 ^ x ^ y; // <-- original
|
||||
uint8_t z1 = (r_or_ls2 >> 6) ^ ( r_or_ls2 >> 1) ^ (r >> 5) ^ r ^ ((x^y) << 1);
|
||||
|
||||
// uint8_t z2 = (r3 & ~r5) ^ (r4 & r6 ) ^ r7 ^ x; // <-- original
|
||||
uint8_t z2 = ((r & ~r_ls2) >> 4) ^ (r_and_ls2 >> 3) ^ r ^ x;
|
||||
|
||||
return (z0 & 4) | (z1 & 2) | (z2 & 1);
|
||||
}
|
||||
*/
|
||||
|
||||
static void opt_successor(const uint8_t *k, State_t *s, uint8_t y) {
|
||||
// #define opt_T(s) (0x1 & ((s->t >> 15) ^ (s->t >> 14) ^ (s->t >> 10) ^ (s->t >> 8) ^ (s->t >> 5) ^ (s->t >> 4)^ (s->t >> 1) ^ s->t))
|
||||
// uint8_t Tt = opt_T(s);
|
||||
uint16_t Tt = s->t & 0xc533;
|
||||
Tt = Tt ^ (Tt >> 1);
|
||||
Tt = Tt ^ (Tt >> 4);
|
||||
Tt = Tt ^ (Tt >> 10);
|
||||
Tt = Tt ^ (Tt >> 8);
|
||||
|
||||
s->t = (s->t >> 1);
|
||||
s->t |= (Tt ^ (s->r >> 7) ^ (s->r >> 3)) << 15;
|
||||
|
||||
uint8_t opt_B = s->b;
|
||||
opt_B ^= s->b >> 6;
|
||||
opt_B ^= s->b >> 5;
|
||||
opt_B ^= s->b >> 4;
|
||||
|
||||
s->b = s->b >> 1;
|
||||
s->b |= (opt_B ^ s->r) << 7;
|
||||
|
||||
uint8_t opt_select = opt_select_LUT[s->r] & 0x04;
|
||||
opt_select |= (opt_select_LUT[s->r] ^ ((Tt ^ y) << 1)) & 0x02;
|
||||
opt_select |= (opt_select_LUT[s->r] ^ Tt) & 0x01;
|
||||
|
||||
uint8_t r = s->r;
|
||||
s->r = (k[opt_select] ^ s->b) + s->l ;
|
||||
s->l = s->r + r;
|
||||
}
|
||||
|
||||
static void opt_suc(const uint8_t *k, State_t *s, const uint8_t *in, uint8_t length, bool add32Zeroes) {
|
||||
for (int i = 0; i < length; i++) {
|
||||
uint8_t head;
|
||||
head = in[i];
|
||||
opt_successor(k, s, head);
|
||||
|
||||
head >>= 1;
|
||||
opt_successor(k, s, head);
|
||||
|
||||
head >>= 1;
|
||||
opt_successor(k, s, head);
|
||||
|
||||
head >>= 1;
|
||||
opt_successor(k, s, head);
|
||||
|
||||
head >>= 1;
|
||||
opt_successor(k, s, head);
|
||||
|
||||
head >>= 1;
|
||||
opt_successor(k, s, head);
|
||||
|
||||
head >>= 1;
|
||||
opt_successor(k, s, head);
|
||||
|
||||
head >>= 1;
|
||||
opt_successor(k, s, head);
|
||||
}
|
||||
//For tag MAC, an additional 32 zeroes
|
||||
if (add32Zeroes) {
|
||||
for (int i = 0; i < 16; i++) {
|
||||
opt_successor(k, s, 0);
|
||||
opt_successor(k, s, 0);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static void opt_output(const uint8_t *k, State_t *s, uint8_t *buffer) {
|
||||
for (uint8_t times = 0; times < 4; times++) {
|
||||
uint8_t bout = 0;
|
||||
bout |= (s->r & 0x4) >> 2;
|
||||
opt_successor(k, s, 0);
|
||||
bout |= (s->r & 0x4) >> 1;
|
||||
opt_successor(k, s, 0);
|
||||
bout |= (s->r & 0x4);
|
||||
opt_successor(k, s, 0);
|
||||
bout |= (s->r & 0x4) << 1;
|
||||
opt_successor(k, s, 0);
|
||||
bout |= (s->r & 0x4) << 2;
|
||||
opt_successor(k, s, 0);
|
||||
bout |= (s->r & 0x4) << 3;
|
||||
opt_successor(k, s, 0);
|
||||
bout |= (s->r & 0x4) << 4;
|
||||
opt_successor(k, s, 0);
|
||||
bout |= (s->r & 0x4) << 5;
|
||||
opt_successor(k, s, 0);
|
||||
buffer[times] = bout;
|
||||
}
|
||||
}
|
||||
|
||||
static void opt_MAC(uint8_t *k, uint8_t *input, uint8_t *out) {
|
||||
State_t _init = {
|
||||
((k[0] ^ 0x4c) + 0xEC) & 0xFF,// l
|
||||
((k[0] ^ 0x4c) + 0x21) & 0xFF,// r
|
||||
0x4c, // b
|
||||
0xE012 // t
|
||||
};
|
||||
|
||||
opt_suc(k, &_init, input, 12, false);
|
||||
opt_output(k, &_init, out);
|
||||
}
|
||||
|
||||
static void opt_MAC_N(uint8_t *k, uint8_t *input, uint8_t in_size, uint8_t *out) {
|
||||
State_t _init = {
|
||||
((k[0] ^ 0x4c) + 0xEC) & 0xFF,// l
|
||||
((k[0] ^ 0x4c) + 0x21) & 0xFF,// r
|
||||
0x4c, // b
|
||||
0xE012 // t
|
||||
};
|
||||
|
||||
opt_suc(k, &_init, input, in_size, false);
|
||||
opt_output(k, &_init, out);
|
||||
}
|
||||
|
||||
void opt_doReaderMAC(uint8_t *cc_nr_p, uint8_t *div_key_p, uint8_t mac[4]) {
|
||||
uint8_t dest [] = {0, 0, 0, 0, 0, 0, 0, 0};
|
||||
opt_MAC(div_key_p, cc_nr_p, dest);
|
||||
memcpy(mac, dest, 4);
|
||||
}
|
||||
|
||||
void opt_doReaderMAC_2(State_t _init, uint8_t *nr, uint8_t mac[4], const uint8_t *div_key_p) {
|
||||
opt_suc(div_key_p, &_init, nr, 4, false);
|
||||
opt_output(div_key_p, &_init, mac);
|
||||
}
|
||||
|
||||
|
||||
void doMAC_N(uint8_t *in_p, uint8_t in_size, uint8_t *div_key_p, uint8_t mac[4]) {
|
||||
uint8_t dest [] = {0, 0, 0, 0, 0, 0, 0, 0};
|
||||
opt_MAC_N(div_key_p, in_p, in_size, dest);
|
||||
memcpy(mac, dest, 4);
|
||||
}
|
||||
|
||||
void opt_doTagMAC(uint8_t *cc_p, const uint8_t *div_key_p, uint8_t mac[4]) {
|
||||
State_t _init = {
|
||||
((div_key_p[0] ^ 0x4c) + 0xEC) & 0xFF,// l
|
||||
((div_key_p[0] ^ 0x4c) + 0x21) & 0xFF,// r
|
||||
0x4c, // b
|
||||
0xE012 // t
|
||||
};
|
||||
opt_suc(div_key_p, &_init, cc_p, 12, true);
|
||||
opt_output(div_key_p, &_init, mac);
|
||||
}
|
||||
|
||||
/**
|
||||
* The tag MAC can be divided (both can, but no point in dividing the reader mac) into
|
||||
* two functions, since the first 8 bytes are known, we can pre-calculate the state
|
||||
* reached after feeding CC to the cipher.
|
||||
* @param cc_p
|
||||
* @param div_key_p
|
||||
* @return the cipher state
|
||||
*/
|
||||
State_t opt_doTagMAC_1(uint8_t *cc_p, const uint8_t *div_key_p) {
|
||||
State_t _init = {
|
||||
((div_key_p[0] ^ 0x4c) + 0xEC) & 0xFF,// l
|
||||
((div_key_p[0] ^ 0x4c) + 0x21) & 0xFF,// r
|
||||
0x4c, // b
|
||||
0xE012 // t
|
||||
};
|
||||
opt_suc(div_key_p, &_init, cc_p, 8, false);
|
||||
return _init;
|
||||
}
|
||||
|
||||
/**
|
||||
* The second part of the tag MAC calculation, since the CC is already calculated into the state,
|
||||
* this function is fed only the NR, and internally feeds the remaining 32 0-bits to generate the tag
|
||||
* MAC response.
|
||||
* @param _init - precalculated cipher state
|
||||
* @param nr - the reader challenge
|
||||
* @param mac - where to store the MAC
|
||||
* @param div_key_p - the key to use
|
||||
*/
|
||||
void opt_doTagMAC_2(State_t _init, uint8_t *nr, uint8_t mac[4], const uint8_t *div_key_p) {
|
||||
opt_suc(div_key_p, &_init, nr, 4, true);
|
||||
opt_output(div_key_p, &_init, mac);
|
||||
}
|
||||
|
||||
|
||||
void iclass_calc_div_key(uint8_t *csn, uint8_t *key, uint8_t *div_key, bool elite) {
|
||||
if (elite) {
|
||||
uint8_t keytable[128] = {0};
|
||||
uint8_t key_index[8] = {0};
|
||||
uint8_t key_sel[8] = { 0 };
|
||||
uint8_t key_sel_p[8] = { 0 };
|
||||
hash2(key, keytable);
|
||||
hash1(csn, key_index);
|
||||
for (uint8_t i = 0; i < 8 ; i++)
|
||||
key_sel[i] = keytable[key_index[i]];
|
||||
|
||||
//Permute from iclass format to standard format
|
||||
permutekey_rev(key_sel, key_sel_p);
|
||||
diversifyKey(csn, key_sel_p, div_key);
|
||||
} else {
|
||||
diversifyKey(csn, key, div_key);
|
||||
}
|
||||
}
|
90
lib/loclass/optimized_cipher.h
Normal file
90
lib/loclass/optimized_cipher.h
Normal file
|
@ -0,0 +1,90 @@
|
|||
//-----------------------------------------------------------------------------
|
||||
// Borrowed initially from https://github.com/holiman/loclass
|
||||
// More recently from https://github.com/RfidResearchGroup/proxmark3
|
||||
// Copyright (C) 2014 Martin Holst Swende
|
||||
// Copyright (C) Proxmark3 contributors. See AUTHORS.md for details.
|
||||
//
|
||||
// This program is free software: you can redistribute it and/or modify
|
||||
// it under the terms of the GNU General Public License as published by
|
||||
// the Free Software Foundation, either version 3 of the License, or
|
||||
// (at your option) any later version.
|
||||
//
|
||||
// This program is distributed in the hope that it will be useful,
|
||||
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
// GNU General Public License for more details.
|
||||
//
|
||||
// See LICENSE.txt for the text of the license.
|
||||
//-----------------------------------------------------------------------------
|
||||
// WARNING
|
||||
//
|
||||
// THIS CODE IS CREATED FOR EXPERIMENTATION AND EDUCATIONAL USE ONLY.
|
||||
//
|
||||
// USAGE OF THIS CODE IN OTHER WAYS MAY INFRINGE UPON THE INTELLECTUAL
|
||||
// PROPERTY OF OTHER PARTIES, SUCH AS INSIDE SECURE AND HID GLOBAL,
|
||||
// AND MAY EXPOSE YOU TO AN INFRINGEMENT ACTION FROM THOSE PARTIES.
|
||||
//
|
||||
// THIS CODE SHOULD NEVER BE USED TO INFRINGE PATENTS OR INTELLECTUAL PROPERTY RIGHTS.
|
||||
//-----------------------------------------------------------------------------
|
||||
// It is a reconstruction of the cipher engine used in iClass, and RFID techology.
|
||||
//
|
||||
// The implementation is based on the work performed by
|
||||
// Flavio D. Garcia, Gerhard de Koning Gans, Roel Verdult and
|
||||
// Milosch Meriac in the paper "Dismantling IClass".
|
||||
//-----------------------------------------------------------------------------
|
||||
#ifndef OPTIMIZED_CIPHER_H
|
||||
#define OPTIMIZED_CIPHER_H
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
#include <stdbool.h>
|
||||
#include <stdint.h>
|
||||
|
||||
/**
|
||||
* Definition 1 (Cipher state). A cipher state of iClass s is an element of F 40/2
|
||||
* consisting of the following four components:
|
||||
* 1. the left register l = (l 0 . . . l 7 ) ∈ F 8/2 ;
|
||||
* 2. the right register r = (r 0 . . . r 7 ) ∈ F 8/2 ;
|
||||
* 3. the top register t = (t 0 . . . t 15 ) ∈ F 16/2 .
|
||||
* 4. the bottom register b = (b 0 . . . b 7 ) ∈ F 8/2 .
|
||||
**/
|
||||
typedef struct {
|
||||
uint8_t l;
|
||||
uint8_t r;
|
||||
uint8_t b;
|
||||
uint16_t t;
|
||||
} State_t;
|
||||
|
||||
/** The reader MAC is MAC(key, CC * NR )
|
||||
**/
|
||||
void opt_doReaderMAC(uint8_t *cc_nr_p, uint8_t *div_key_p, uint8_t mac[4]);
|
||||
|
||||
void opt_doReaderMAC_2(State_t _init, uint8_t *nr, uint8_t mac[4], const uint8_t *div_key_p);
|
||||
|
||||
/**
|
||||
* The tag MAC is MAC(key, CC * NR * 32x0))
|
||||
*/
|
||||
void opt_doTagMAC(uint8_t *cc_p, const uint8_t *div_key_p, uint8_t mac[4]);
|
||||
|
||||
/**
|
||||
* The tag MAC can be divided (both can, but no point in dividing the reader mac) into
|
||||
* two functions, since the first 8 bytes are known, we can pre-calculate the state
|
||||
* reached after feeding CC to the cipher.
|
||||
* @param cc_p
|
||||
* @param div_key_p
|
||||
* @return the cipher state
|
||||
*/
|
||||
State_t opt_doTagMAC_1(uint8_t *cc_p, const uint8_t *div_key_p);
|
||||
/**
|
||||
* The second part of the tag MAC calculation, since the CC is already calculated into the state,
|
||||
* this function is fed only the NR, and internally feeds the remaining 32 0-bits to generate the tag
|
||||
* MAC response.
|
||||
* @param _init - precalculated cipher state
|
||||
* @param nr - the reader challenge
|
||||
* @param mac - where to store the MAC
|
||||
* @param div_key_p - the key to use
|
||||
*/
|
||||
void opt_doTagMAC_2(State_t _init, uint8_t *nr, uint8_t mac[4], const uint8_t *div_key_p);
|
||||
|
||||
void doMAC_N(uint8_t *in_p, uint8_t in_size, uint8_t *div_key_p, uint8_t mac[4]);
|
||||
void iclass_calc_div_key(uint8_t *csn, uint8_t *key, uint8_t *div_key, bool elite);
|
||||
#endif // OPTIMIZED_CIPHER_H
|
137
lib/loclass/optimized_cipherutils.c
Normal file
137
lib/loclass/optimized_cipherutils.c
Normal file
|
@ -0,0 +1,137 @@
|
|||
//-----------------------------------------------------------------------------
|
||||
// Borrowed initially from https://github.com/holiman/loclass
|
||||
// Copyright (C) 2014 Martin Holst Swende
|
||||
// Copyright (C) Proxmark3 contributors. See AUTHORS.md for details.
|
||||
//
|
||||
// This program is free software: you can redistribute it and/or modify
|
||||
// it under the terms of the GNU General Public License as published by
|
||||
// the Free Software Foundation, either version 3 of the License, or
|
||||
// (at your option) any later version.
|
||||
//
|
||||
// This program is distributed in the hope that it will be useful,
|
||||
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
// GNU General Public License for more details.
|
||||
//
|
||||
// See LICENSE.txt for the text of the license.
|
||||
//-----------------------------------------------------------------------------
|
||||
// WARNING
|
||||
//
|
||||
// THIS CODE IS CREATED FOR EXPERIMENTATION AND EDUCATIONAL USE ONLY.
|
||||
//
|
||||
// USAGE OF THIS CODE IN OTHER WAYS MAY INFRINGE UPON THE INTELLECTUAL
|
||||
// PROPERTY OF OTHER PARTIES, SUCH AS INSIDE SECURE AND HID GLOBAL,
|
||||
// AND MAY EXPOSE YOU TO AN INFRINGEMENT ACTION FROM THOSE PARTIES.
|
||||
//
|
||||
// THIS CODE SHOULD NEVER BE USED TO INFRINGE PATENTS OR INTELLECTUAL PROPERTY RIGHTS.
|
||||
//-----------------------------------------------------------------------------
|
||||
// It is a reconstruction of the cipher engine used in iClass, and RFID techology.
|
||||
//
|
||||
// The implementation is based on the work performed by
|
||||
// Flavio D. Garcia, Gerhard de Koning Gans, Roel Verdult and
|
||||
// Milosch Meriac in the paper "Dismantling IClass".
|
||||
//-----------------------------------------------------------------------------
|
||||
#include "optimized_cipherutils.h"
|
||||
#include <stdint.h>
|
||||
|
||||
/**
|
||||
*
|
||||
* @brief Return and remove the first bit (x0) in the stream : <x0 x1 x2 x3 ... xn >
|
||||
* @param stream
|
||||
* @return
|
||||
*/
|
||||
bool headBit(BitstreamIn_t *stream) {
|
||||
int bytepos = stream->position >> 3; // divide by 8
|
||||
int bitpos = (stream->position++) & 7; // mask out 00000111
|
||||
return (*(stream->buffer + bytepos) >> (7 - bitpos)) & 1;
|
||||
}
|
||||
/**
|
||||
* @brief Return and remove the last bit (xn) in the stream: <x0 x1 x2 ... xn>
|
||||
* @param stream
|
||||
* @return
|
||||
*/
|
||||
bool tailBit(BitstreamIn_t *stream) {
|
||||
int bitpos = stream->numbits - 1 - (stream->position++);
|
||||
|
||||
int bytepos = bitpos >> 3;
|
||||
bitpos &= 7;
|
||||
return (*(stream->buffer + bytepos) >> (7 - bitpos)) & 1;
|
||||
}
|
||||
/**
|
||||
* @brief Pushes bit onto the stream
|
||||
* @param stream
|
||||
* @param bit
|
||||
*/
|
||||
void pushBit(BitstreamOut_t *stream, bool bit) {
|
||||
int bytepos = stream->position >> 3; // divide by 8
|
||||
int bitpos = stream->position & 7;
|
||||
*(stream->buffer + bytepos) |= (bit) << (7 - bitpos);
|
||||
stream->position++;
|
||||
stream->numbits++;
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Pushes the lower six bits onto the stream
|
||||
* as b0 b1 b2 b3 b4 b5 b6
|
||||
* @param stream
|
||||
* @param bits
|
||||
*/
|
||||
void push6bits(BitstreamOut_t *stream, uint8_t bits) {
|
||||
pushBit(stream, bits & 0x20);
|
||||
pushBit(stream, bits & 0x10);
|
||||
pushBit(stream, bits & 0x08);
|
||||
pushBit(stream, bits & 0x04);
|
||||
pushBit(stream, bits & 0x02);
|
||||
pushBit(stream, bits & 0x01);
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief bitsLeft
|
||||
* @param stream
|
||||
* @return number of bits left in stream
|
||||
*/
|
||||
int bitsLeft(BitstreamIn_t *stream) {
|
||||
return stream->numbits - stream->position;
|
||||
}
|
||||
/**
|
||||
* @brief numBits
|
||||
* @param stream
|
||||
* @return Number of bits stored in stream
|
||||
*/
|
||||
void x_num_to_bytes(uint64_t n, size_t len, uint8_t *dest) {
|
||||
while (len--) {
|
||||
dest[len] = (uint8_t) n;
|
||||
n >>= 8;
|
||||
}
|
||||
}
|
||||
|
||||
uint64_t x_bytes_to_num(uint8_t *src, size_t len) {
|
||||
uint64_t num = 0;
|
||||
while (len--) {
|
||||
num = (num << 8) | (*src);
|
||||
src++;
|
||||
}
|
||||
return num;
|
||||
}
|
||||
|
||||
uint8_t reversebytes(uint8_t b) {
|
||||
b = (b & 0xF0) >> 4 | (b & 0x0F) << 4;
|
||||
b = (b & 0xCC) >> 2 | (b & 0x33) << 2;
|
||||
b = (b & 0xAA) >> 1 | (b & 0x55) << 1;
|
||||
return b;
|
||||
}
|
||||
|
||||
void reverse_arraybytes(uint8_t *arr, size_t len) {
|
||||
uint8_t i;
|
||||
for (i = 0; i < len ; i++) {
|
||||
arr[i] = reversebytes(arr[i]);
|
||||
}
|
||||
}
|
||||
|
||||
void reverse_arraycopy(uint8_t *arr, uint8_t *dest, size_t len) {
|
||||
uint8_t i;
|
||||
for (i = 0; i < len ; i++) {
|
||||
dest[i] = reversebytes(arr[i]);
|
||||
}
|
||||
}
|
||||
|
64
lib/loclass/optimized_cipherutils.h
Normal file
64
lib/loclass/optimized_cipherutils.h
Normal file
|
@ -0,0 +1,64 @@
|
|||
//-----------------------------------------------------------------------------
|
||||
// Borrowed initially from https://github.com/holiman/loclass
|
||||
// More recently from https://github.com/RfidResearchGroup/proxmark3
|
||||
// Copyright (C) 2014 Martin Holst Swende
|
||||
// Copyright (C) Proxmark3 contributors. See AUTHORS.md for details.
|
||||
//
|
||||
// This program is free software: you can redistribute it and/or modify
|
||||
// it under the terms of the GNU General Public License as published by
|
||||
// the Free Software Foundation, either version 3 of the License, or
|
||||
// (at your option) any later version.
|
||||
//
|
||||
// This program is distributed in the hope that it will be useful,
|
||||
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
// GNU General Public License for more details.
|
||||
//
|
||||
// See LICENSE.txt for the text of the license.
|
||||
//-----------------------------------------------------------------------------
|
||||
// WARNING
|
||||
//
|
||||
// THIS CODE IS CREATED FOR EXPERIMENTATION AND EDUCATIONAL USE ONLY.
|
||||
//
|
||||
// USAGE OF THIS CODE IN OTHER WAYS MAY INFRINGE UPON THE INTELLECTUAL
|
||||
// PROPERTY OF OTHER PARTIES, SUCH AS INSIDE SECURE AND HID GLOBAL,
|
||||
// AND MAY EXPOSE YOU TO AN INFRINGEMENT ACTION FROM THOSE PARTIES.
|
||||
//
|
||||
// THIS CODE SHOULD NEVER BE USED TO INFRINGE PATENTS OR INTELLECTUAL PROPERTY RIGHTS.
|
||||
//-----------------------------------------------------------------------------
|
||||
// It is a reconstruction of the cipher engine used in iClass, and RFID techology.
|
||||
//
|
||||
// The implementation is based on the work performed by
|
||||
// Flavio D. Garcia, Gerhard de Koning Gans, Roel Verdult and
|
||||
// Milosch Meriac in the paper "Dismantling IClass".
|
||||
//-----------------------------------------------------------------------------
|
||||
#ifndef CIPHERUTILS_H
|
||||
#define CIPHERUTILS_H
|
||||
#include <stdint.h>
|
||||
#include <stdbool.h>
|
||||
#include <stdlib.h>
|
||||
|
||||
typedef struct {
|
||||
uint8_t *buffer;
|
||||
uint8_t numbits;
|
||||
uint8_t position;
|
||||
} BitstreamIn_t;
|
||||
|
||||
typedef struct {
|
||||
uint8_t *buffer;
|
||||
uint8_t numbits;
|
||||
uint8_t position;
|
||||
} BitstreamOut_t;
|
||||
|
||||
bool headBit(BitstreamIn_t *stream);
|
||||
bool tailBit(BitstreamIn_t *stream);
|
||||
void pushBit(BitstreamOut_t *stream, bool bit);
|
||||
int bitsLeft(BitstreamIn_t *stream);
|
||||
|
||||
void push6bits(BitstreamOut_t *stream, uint8_t bits);
|
||||
void x_num_to_bytes(uint64_t n, size_t len, uint8_t *dest);
|
||||
uint64_t x_bytes_to_num(uint8_t *src, size_t len);
|
||||
uint8_t reversebytes(uint8_t b);
|
||||
void reverse_arraybytes(uint8_t *arr, size_t len);
|
||||
void reverse_arraycopy(uint8_t *arr, uint8_t *dest, size_t len);
|
||||
#endif // CIPHERUTILS_H
|
234
lib/loclass/optimized_elite.c
Normal file
234
lib/loclass/optimized_elite.c
Normal file
|
@ -0,0 +1,234 @@
|
|||
//-----------------------------------------------------------------------------
|
||||
// Borrowed initially from https://github.com/holiman/loclass
|
||||
// Copyright (C) 2014 Martin Holst Swende
|
||||
// Copyright (C) Proxmark3 contributors. See AUTHORS.md for details.
|
||||
//
|
||||
// This program is free software: you can redistribute it and/or modify
|
||||
// it under the terms of the GNU General Public License as published by
|
||||
// the Free Software Foundation, either version 3 of the License, or
|
||||
// (at your option) any later version.
|
||||
//
|
||||
// This program is distributed in the hope that it will be useful,
|
||||
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
// GNU General Public License for more details.
|
||||
//
|
||||
// See LICENSE.txt for the text of the license.
|
||||
//-----------------------------------------------------------------------------
|
||||
// WARNING
|
||||
//
|
||||
// THIS CODE IS CREATED FOR EXPERIMENTATION AND EDUCATIONAL USE ONLY.
|
||||
//
|
||||
// USAGE OF THIS CODE IN OTHER WAYS MAY INFRINGE UPON THE INTELLECTUAL
|
||||
// PROPERTY OF OTHER PARTIES, SUCH AS INSIDE SECURE AND HID GLOBAL,
|
||||
// AND MAY EXPOSE YOU TO AN INFRINGEMENT ACTION FROM THOSE PARTIES.
|
||||
//
|
||||
// THIS CODE SHOULD NEVER BE USED TO INFRINGE PATENTS OR INTELLECTUAL PROPERTY RIGHTS.
|
||||
//-----------------------------------------------------------------------------
|
||||
// It is a reconstruction of the cipher engine used in iClass, and RFID techology.
|
||||
//
|
||||
// The implementation is based on the work performed by
|
||||
// Flavio D. Garcia, Gerhard de Koning Gans, Roel Verdult and
|
||||
// Milosch Meriac in the paper "Dismantling IClass".
|
||||
//-----------------------------------------------------------------------------
|
||||
#include "optimized_elite.h"
|
||||
|
||||
#include <stdint.h>
|
||||
#include <stdbool.h>
|
||||
#include <string.h>
|
||||
#include <mbedtls/des.h>
|
||||
#include "optimized_ikeys.h"
|
||||
|
||||
/**
|
||||
* @brief Permutes a key from standard NIST format to Iclass specific format
|
||||
* from http://www.proxmark.org/forum/viewtopic.php?pid=11220#p11220
|
||||
*
|
||||
* If you permute [6c 8d 44 f9 2a 2d 01 bf] you get [8a 0d b9 88 bb a7 90 ea] as shown below.
|
||||
*
|
||||
* 1 0 1 1 1 1 1 1 bf
|
||||
* 0 0 0 0 0 0 0 1 01
|
||||
* 0 0 1 0 1 1 0 1 2d
|
||||
* 0 0 1 0 1 0 1 0 2a
|
||||
* 1 1 1 1 1 0 0 1 f9
|
||||
* 0 1 0 0 0 1 0 0 44
|
||||
* 1 0 0 0 1 1 0 1 8d
|
||||
* 0 1 1 0 1 1 0 0 6c
|
||||
*
|
||||
* 8 0 b 8 b a 9 e
|
||||
* a d 9 8 b 7 0 a
|
||||
*
|
||||
* @param key
|
||||
* @param dest
|
||||
*/
|
||||
void permutekey(const uint8_t key[8], uint8_t dest[8]) {
|
||||
int i;
|
||||
for (i = 0 ; i < 8 ; i++) {
|
||||
dest[i] = (((key[7] & (0x80 >> i)) >> (7 - i)) << 7) |
|
||||
(((key[6] & (0x80 >> i)) >> (7 - i)) << 6) |
|
||||
(((key[5] & (0x80 >> i)) >> (7 - i)) << 5) |
|
||||
(((key[4] & (0x80 >> i)) >> (7 - i)) << 4) |
|
||||
(((key[3] & (0x80 >> i)) >> (7 - i)) << 3) |
|
||||
(((key[2] & (0x80 >> i)) >> (7 - i)) << 2) |
|
||||
(((key[1] & (0x80 >> i)) >> (7 - i)) << 1) |
|
||||
(((key[0] & (0x80 >> i)) >> (7 - i)) << 0);
|
||||
}
|
||||
}
|
||||
/**
|
||||
* Permutes a key from iclass specific format to NIST format
|
||||
* @brief permutekey_rev
|
||||
* @param key
|
||||
* @param dest
|
||||
*/
|
||||
void permutekey_rev(const uint8_t key[8], uint8_t dest[8]) {
|
||||
int i;
|
||||
for (i = 0 ; i < 8 ; i++) {
|
||||
dest[7 - i] = (((key[0] & (0x80 >> i)) >> (7 - i)) << 7) |
|
||||
(((key[1] & (0x80 >> i)) >> (7 - i)) << 6) |
|
||||
(((key[2] & (0x80 >> i)) >> (7 - i)) << 5) |
|
||||
(((key[3] & (0x80 >> i)) >> (7 - i)) << 4) |
|
||||
(((key[4] & (0x80 >> i)) >> (7 - i)) << 3) |
|
||||
(((key[5] & (0x80 >> i)) >> (7 - i)) << 2) |
|
||||
(((key[6] & (0x80 >> i)) >> (7 - i)) << 1) |
|
||||
(((key[7] & (0x80 >> i)) >> (7 - i)) << 0);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Helper function for hash1
|
||||
* @brief rr
|
||||
* @param val
|
||||
* @return
|
||||
*/
|
||||
static uint8_t rr(uint8_t val) {
|
||||
return val >> 1 | ((val & 1) << 7);
|
||||
}
|
||||
|
||||
/**
|
||||
* Helper function for hash1
|
||||
* @brief rl
|
||||
* @param val
|
||||
* @return
|
||||
*/
|
||||
static uint8_t rl(uint8_t val) {
|
||||
return val << 1 | ((val & 0x80) >> 7);
|
||||
}
|
||||
|
||||
/**
|
||||
* Helper function for hash1
|
||||
* @brief swap
|
||||
* @param val
|
||||
* @return
|
||||
*/
|
||||
static uint8_t swap(uint8_t val) {
|
||||
return ((val >> 4) & 0xFF) | ((val & 0xFF) << 4);
|
||||
}
|
||||
|
||||
/**
|
||||
* Hash1 takes CSN as input, and determines what bytes in the keytable will be used
|
||||
* when constructing the K_sel.
|
||||
* @param csn the CSN used
|
||||
* @param k output
|
||||
*/
|
||||
void hash1(const uint8_t csn[], uint8_t k[]) {
|
||||
k[0] = csn[0] ^ csn[1] ^ csn[2] ^ csn[3] ^ csn[4] ^ csn[5] ^ csn[6] ^ csn[7];
|
||||
k[1] = csn[0] + csn[1] + csn[2] + csn[3] + csn[4] + csn[5] + csn[6] + csn[7];
|
||||
k[2] = rr(swap(csn[2] + k[1]));
|
||||
k[3] = rl(swap(csn[3] + k[0]));
|
||||
k[4] = ~rr(csn[4] + k[2]) + 1;
|
||||
k[5] = ~rl(csn[5] + k[3]) + 1;
|
||||
k[6] = rr(csn[6] + (k[4] ^ 0x3c));
|
||||
k[7] = rl(csn[7] + (k[5] ^ 0xc3));
|
||||
|
||||
k[7] &= 0x7F;
|
||||
k[6] &= 0x7F;
|
||||
k[5] &= 0x7F;
|
||||
k[4] &= 0x7F;
|
||||
k[3] &= 0x7F;
|
||||
k[2] &= 0x7F;
|
||||
k[1] &= 0x7F;
|
||||
k[0] &= 0x7F;
|
||||
}
|
||||
/**
|
||||
Definition 14. Define the rotate key function rk : (F 82 ) 8 × N → (F 82 ) 8 as
|
||||
rk(x [0] . . . x [7] , 0) = x [0] . . . x [7]
|
||||
rk(x [0] . . . x [7] , n + 1) = rk(rl(x [0] ) . . . rl(x [7] ), n)
|
||||
**/
|
||||
static void rk(uint8_t *key, uint8_t n, uint8_t *outp_key) {
|
||||
memcpy(outp_key, key, 8);
|
||||
uint8_t j;
|
||||
while (n-- > 0) {
|
||||
for (j = 0; j < 8 ; j++)
|
||||
outp_key[j] = rl(outp_key[j]);
|
||||
}
|
||||
return;
|
||||
}
|
||||
|
||||
static mbedtls_des_context ctx_enc;
|
||||
static mbedtls_des_context ctx_dec;
|
||||
|
||||
static void desdecrypt_iclass(uint8_t *iclass_key, uint8_t *input, uint8_t *output) {
|
||||
uint8_t key_std_format[8] = {0};
|
||||
permutekey_rev(iclass_key, key_std_format);
|
||||
mbedtls_des_setkey_dec(&ctx_dec, key_std_format);
|
||||
mbedtls_des_crypt_ecb(&ctx_dec, input, output);
|
||||
}
|
||||
|
||||
static void desencrypt_iclass(uint8_t *iclass_key, uint8_t *input, uint8_t *output) {
|
||||
uint8_t key_std_format[8] = {0};
|
||||
permutekey_rev(iclass_key, key_std_format);
|
||||
mbedtls_des_setkey_enc(&ctx_enc, key_std_format);
|
||||
mbedtls_des_crypt_ecb(&ctx_enc, input, output);
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Insert uint8_t[8] custom master key to calculate hash2 and return key_select.
|
||||
* @param key unpermuted custom key
|
||||
* @param hash1 hash1
|
||||
* @param key_sel output key_sel=h[hash1[i]]
|
||||
*/
|
||||
void hash2(uint8_t *key64, uint8_t *outp_keytable) {
|
||||
/**
|
||||
*Expected:
|
||||
* High Security Key Table
|
||||
|
||||
00 F1 35 59 A1 0D 5A 26 7F 18 60 0B 96 8A C0 25 C1
|
||||
10 BF A1 3B B0 FF 85 28 75 F2 1F C6 8F 0E 74 8F 21
|
||||
20 14 7A 55 16 C8 A9 7D B3 13 0C 5D C9 31 8D A9 B2
|
||||
30 A3 56 83 0F 55 7E DE 45 71 21 D2 6D C1 57 1C 9C
|
||||
40 78 2F 64 51 42 7B 64 30 FA 26 51 76 D3 E0 FB B6
|
||||
50 31 9F BF 2F 7E 4F 94 B4 BD 4F 75 91 E3 1B EB 42
|
||||
60 3F 88 6F B8 6C 2C 93 0D 69 2C D5 20 3C C1 61 95
|
||||
70 43 08 A0 2F FE B3 26 D7 98 0B 34 7B 47 70 A0 AB
|
||||
|
||||
**** The 64-bit HS Custom Key Value = 5B7C62C491C11B39 ******/
|
||||
uint8_t key64_negated[8] = {0};
|
||||
uint8_t z[8][8] = {{0}, {0}};
|
||||
uint8_t temp_output[8] = {0};
|
||||
|
||||
//calculate complement of key
|
||||
int i;
|
||||
for (i = 0; i < 8; i++)
|
||||
key64_negated[i] = ~key64[i];
|
||||
|
||||
// Once again, key is on iclass-format
|
||||
desencrypt_iclass(key64, key64_negated, z[0]);
|
||||
|
||||
uint8_t y[8][8] = {{0}, {0}};
|
||||
|
||||
// y[0]=DES_dec(z[0],~key)
|
||||
// Once again, key is on iclass-format
|
||||
desdecrypt_iclass(z[0], key64_negated, y[0]);
|
||||
|
||||
for (i = 1; i < 8; i++) {
|
||||
rk(key64, i, temp_output);
|
||||
desdecrypt_iclass(temp_output, z[i - 1], z[i]);
|
||||
desencrypt_iclass(temp_output, y[i - 1], y[i]);
|
||||
}
|
||||
|
||||
if (outp_keytable != NULL) {
|
||||
for (i = 0 ; i < 8 ; i++) {
|
||||
memcpy(outp_keytable + i * 16, y[i], 8);
|
||||
memcpy(outp_keytable + 8 + i * 16, z[i], 8);
|
||||
}
|
||||
}
|
||||
}
|
58
lib/loclass/optimized_elite.h
Normal file
58
lib/loclass/optimized_elite.h
Normal file
|
@ -0,0 +1,58 @@
|
|||
//-----------------------------------------------------------------------------
|
||||
// Borrowed initially from https://github.com/holiman/loclass
|
||||
// More recently from https://github.com/RfidResearchGroup/proxmark3
|
||||
// Copyright (C) 2014 Martin Holst Swende
|
||||
// Copyright (C) Proxmark3 contributors. See AUTHORS.md for details.
|
||||
//
|
||||
// This program is free software: you can redistribute it and/or modify
|
||||
// it under the terms of the GNU General Public License as published by
|
||||
// the Free Software Foundation, either version 3 of the License, or
|
||||
// (at your option) any later version.
|
||||
//
|
||||
// This program is distributed in the hope that it will be useful,
|
||||
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
// GNU General Public License for more details.
|
||||
//
|
||||
// See LICENSE.txt for the text of the license.
|
||||
//-----------------------------------------------------------------------------
|
||||
// WARNING
|
||||
//
|
||||
// THIS CODE IS CREATED FOR EXPERIMENTATION AND EDUCATIONAL USE ONLY.
|
||||
//
|
||||
// USAGE OF THIS CODE IN OTHER WAYS MAY INFRINGE UPON THE INTELLECTUAL
|
||||
// PROPERTY OF OTHER PARTIES, SUCH AS INSIDE SECURE AND HID GLOBAL,
|
||||
// AND MAY EXPOSE YOU TO AN INFRINGEMENT ACTION FROM THOSE PARTIES.
|
||||
//
|
||||
// THIS CODE SHOULD NEVER BE USED TO INFRINGE PATENTS OR INTELLECTUAL PROPERTY RIGHTS.
|
||||
//-----------------------------------------------------------------------------
|
||||
// It is a reconstruction of the cipher engine used in iClass, and RFID techology.
|
||||
//
|
||||
// The implementation is based on the work performed by
|
||||
// Flavio D. Garcia, Gerhard de Koning Gans, Roel Verdult and
|
||||
// Milosch Meriac in the paper "Dismantling IClass".
|
||||
//-----------------------------------------------------------------------------
|
||||
#ifndef ELITE_CRACK_H
|
||||
#define ELITE_CRACK_H
|
||||
|
||||
#include <stdint.h>
|
||||
#include <stdlib.h>
|
||||
|
||||
void permutekey(const uint8_t key[8], uint8_t dest[8]);
|
||||
/**
|
||||
* Permutes a key from iclass specific format to NIST format
|
||||
* @brief permutekey_rev
|
||||
* @param key
|
||||
* @param dest
|
||||
*/
|
||||
void permutekey_rev(const uint8_t key[8], uint8_t dest[8]);
|
||||
/**
|
||||
* Hash1 takes CSN as input, and determines what bytes in the keytable will be used
|
||||
* when constructing the K_sel.
|
||||
* @param csn the CSN used
|
||||
* @param k output
|
||||
*/
|
||||
void hash1(const uint8_t *csn, uint8_t *k);
|
||||
void hash2(uint8_t *key64, uint8_t *outp_keytable);
|
||||
|
||||
#endif
|
321
lib/loclass/optimized_ikeys.c
Normal file
321
lib/loclass/optimized_ikeys.c
Normal file
|
@ -0,0 +1,321 @@
|
|||
//-----------------------------------------------------------------------------
|
||||
// Borrowed initially from https://github.com/holiman/loclass
|
||||
// Copyright (C) 2014 Martin Holst Swende
|
||||
// Copyright (C) Proxmark3 contributors. See AUTHORS.md for details.
|
||||
//
|
||||
// This program is free software: you can redistribute it and/or modify
|
||||
// it under the terms of the GNU General Public License as published by
|
||||
// the Free Software Foundation, either version 3 of the License, or
|
||||
// (at your option) any later version.
|
||||
//
|
||||
// This program is distributed in the hope that it will be useful,
|
||||
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
// GNU General Public License for more details.
|
||||
//
|
||||
// See LICENSE.txt for the text of the license.
|
||||
//-----------------------------------------------------------------------------
|
||||
// WARNING
|
||||
//
|
||||
// THIS CODE IS CREATED FOR EXPERIMENTATION AND EDUCATIONAL USE ONLY.
|
||||
//
|
||||
// USAGE OF THIS CODE IN OTHER WAYS MAY INFRINGE UPON THE INTELLECTUAL
|
||||
// PROPERTY OF OTHER PARTIES, SUCH AS INSIDE SECURE AND HID GLOBAL,
|
||||
// AND MAY EXPOSE YOU TO AN INFRINGEMENT ACTION FROM THOSE PARTIES.
|
||||
//
|
||||
// THIS CODE SHOULD NEVER BE USED TO INFRINGE PATENTS OR INTELLECTUAL PROPERTY RIGHTS.
|
||||
//-----------------------------------------------------------------------------
|
||||
// It is a reconstruction of the cipher engine used in iClass, and RFID techology.
|
||||
//
|
||||
// The implementation is based on the work performed by
|
||||
// Flavio D. Garcia, Gerhard de Koning Gans, Roel Verdult and
|
||||
// Milosch Meriac in the paper "Dismantling IClass".
|
||||
//-----------------------------------------------------------------------------
|
||||
|
||||
/**
|
||||
From "Dismantling iclass":
|
||||
This section describes in detail the built-in key diversification algorithm of iClass.
|
||||
Besides the obvious purpose of deriving a card key from a master key, this
|
||||
algorithm intends to circumvent weaknesses in the cipher by preventing the
|
||||
usage of certain ‘weak’ keys. In order to compute a diversified key, the iClass
|
||||
reader first encrypts the card identity id with the master key K, using single
|
||||
DES. The resulting ciphertext is then input to a function called hash0 which
|
||||
outputs the diversified key k.
|
||||
|
||||
k = hash0(DES enc (id, K))
|
||||
|
||||
Here the DES encryption of id with master key K outputs a cryptogram c
|
||||
of 64 bits. These 64 bits are divided as c = x, y, z [0] , . . . , z [7] ∈ F 82 × F 82 × (F 62 ) 8
|
||||
which is used as input to the hash0 function. This function introduces some
|
||||
obfuscation by performing a number of permutations, complement and modulo
|
||||
operations, see Figure 2.5. Besides that, it checks for and removes patterns like
|
||||
similar key bytes, which could produce a strong bias in the cipher. Finally, the
|
||||
output of hash0 is the diversified card key k = k [0] , . . . , k [7] ∈ (F 82 ) 8 .
|
||||
|
||||
**/
|
||||
#include "optimized_ikeys.h"
|
||||
|
||||
#include <stdint.h>
|
||||
#include <stdbool.h>
|
||||
#include <inttypes.h>
|
||||
#include <mbedtls/des.h>
|
||||
#include "optimized_cipherutils.h"
|
||||
|
||||
static uint8_t pi[35] = {
|
||||
0x0F, 0x17, 0x1B, 0x1D, 0x1E, 0x27, 0x2B, 0x2D,
|
||||
0x2E, 0x33, 0x35, 0x39, 0x36, 0x3A, 0x3C, 0x47,
|
||||
0x4B, 0x4D, 0x4E, 0x53, 0x55, 0x56, 0x59, 0x5A,
|
||||
0x5C, 0x63, 0x65, 0x66, 0x69, 0x6A, 0x6C, 0x71,
|
||||
0x72, 0x74, 0x78
|
||||
};
|
||||
|
||||
static mbedtls_des_context ctx_enc;
|
||||
|
||||
/**
|
||||
* @brief The key diversification algorithm uses 6-bit bytes.
|
||||
* This implementation uses 64 bit uint to pack seven of them into one
|
||||
* variable. When they are there, they are placed as follows:
|
||||
* XXXX XXXX N0 .... N7, occupying the last 48 bits.
|
||||
*
|
||||
* This function picks out one from such a collection
|
||||
* @param all
|
||||
* @param n bitnumber
|
||||
* @return
|
||||
*/
|
||||
static uint8_t getSixBitByte(uint64_t c, int n) {
|
||||
return (c >> (42 - 6 * n)) & 0x3F;
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Puts back a six-bit 'byte' into a uint64_t.
|
||||
* @param c buffer
|
||||
* @param z the value to place there
|
||||
* @param n bitnumber.
|
||||
*/
|
||||
static void pushbackSixBitByte(uint64_t *c, uint8_t z, int n) {
|
||||
//0x XXXX YYYY ZZZZ ZZZZ ZZZZ
|
||||
// ^z0 ^z7
|
||||
//z0: 1111 1100 0000 0000
|
||||
|
||||
uint64_t masked = z & 0x3F;
|
||||
uint64_t eraser = 0x3F;
|
||||
masked <<= 42 - 6 * n;
|
||||
eraser <<= 42 - 6 * n;
|
||||
|
||||
//masked <<= 6*n;
|
||||
//eraser <<= 6*n;
|
||||
|
||||
eraser = ~eraser;
|
||||
(*c) &= eraser;
|
||||
(*c) |= masked;
|
||||
|
||||
}
|
||||
/**
|
||||
* @brief Swaps the z-values.
|
||||
* If the input value has format XYZ0Z1...Z7, the output will have the format
|
||||
* XYZ7Z6...Z0 instead
|
||||
* @param c
|
||||
* @return
|
||||
*/
|
||||
static uint64_t swapZvalues(uint64_t c) {
|
||||
uint64_t newz = 0;
|
||||
pushbackSixBitByte(&newz, getSixBitByte(c, 0), 7);
|
||||
pushbackSixBitByte(&newz, getSixBitByte(c, 1), 6);
|
||||
pushbackSixBitByte(&newz, getSixBitByte(c, 2), 5);
|
||||
pushbackSixBitByte(&newz, getSixBitByte(c, 3), 4);
|
||||
pushbackSixBitByte(&newz, getSixBitByte(c, 4), 3);
|
||||
pushbackSixBitByte(&newz, getSixBitByte(c, 5), 2);
|
||||
pushbackSixBitByte(&newz, getSixBitByte(c, 6), 1);
|
||||
pushbackSixBitByte(&newz, getSixBitByte(c, 7), 0);
|
||||
newz |= (c & 0xFFFF000000000000);
|
||||
return newz;
|
||||
}
|
||||
|
||||
/**
|
||||
* @return 4 six-bit bytes chunked into a uint64_t,as 00..00a0a1a2a3
|
||||
*/
|
||||
static uint64_t ck(int i, int j, uint64_t z) {
|
||||
if (i == 1 && j == -1) {
|
||||
// ck(1, −1, z [0] . . . z [3] ) = z [0] . . . z [3]
|
||||
return z;
|
||||
} else if (j == -1) {
|
||||
// ck(i, −1, z [0] . . . z [3] ) = ck(i − 1, i − 2, z [0] . . . z [3] )
|
||||
return ck(i - 1, i - 2, z);
|
||||
}
|
||||
|
||||
if (getSixBitByte(z, i) == getSixBitByte(z, j)) {
|
||||
//ck(i, j − 1, z [0] . . . z [i] ← j . . . z [3] )
|
||||
uint64_t newz = 0;
|
||||
int c;
|
||||
for (c = 0; c < 4; c++) {
|
||||
uint8_t val = getSixBitByte(z, c);
|
||||
if (c == i)
|
||||
pushbackSixBitByte(&newz, j, c);
|
||||
else
|
||||
pushbackSixBitByte(&newz, val, c);
|
||||
}
|
||||
return ck(i, j - 1, newz);
|
||||
} else {
|
||||
return ck(i, j - 1, z);
|
||||
}
|
||||
}
|
||||
/**
|
||||
|
||||
Definition 8.
|
||||
Let the function check : (F 62 ) 8 → (F 62 ) 8 be defined as
|
||||
check(z [0] . . . z [7] ) = ck(3, 2, z [0] . . . z [3] ) · ck(3, 2, z [4] . . . z [7] )
|
||||
|
||||
where ck : N × N × (F 62 ) 4 → (F 62 ) 4 is defined as
|
||||
|
||||
ck(1, −1, z [0] . . . z [3] ) = z [0] . . . z [3]
|
||||
ck(i, −1, z [0] . . . z [3] ) = ck(i − 1, i − 2, z [0] . . . z [3] )
|
||||
ck(i, j, z [0] . . . z [3] ) =
|
||||
ck(i, j − 1, z [0] . . . z [i] ← j . . . z [3] ), if z [i] = z [j] ;
|
||||
ck(i, j − 1, z [0] . . . z [3] ), otherwise
|
||||
|
||||
otherwise.
|
||||
**/
|
||||
|
||||
static uint64_t check(uint64_t z) {
|
||||
//These 64 bits are divided as c = x, y, z [0] , . . . , z [7]
|
||||
|
||||
// ck(3, 2, z [0] . . . z [3] )
|
||||
uint64_t ck1 = ck(3, 2, z);
|
||||
|
||||
// ck(3, 2, z [4] . . . z [7] )
|
||||
uint64_t ck2 = ck(3, 2, z << 24);
|
||||
|
||||
//The ck function will place the values
|
||||
// in the middle of z.
|
||||
ck1 &= 0x00000000FFFFFF000000;
|
||||
ck2 &= 0x00000000FFFFFF000000;
|
||||
|
||||
return ck1 | ck2 >> 24;
|
||||
}
|
||||
|
||||
static void permute(BitstreamIn_t *p_in, uint64_t z, int l, int r, BitstreamOut_t *out) {
|
||||
if (bitsLeft(p_in) == 0)
|
||||
return;
|
||||
|
||||
bool pn = tailBit(p_in);
|
||||
if (pn) { // pn = 1
|
||||
uint8_t zl = getSixBitByte(z, l);
|
||||
|
||||
push6bits(out, zl + 1);
|
||||
permute(p_in, z, l + 1, r, out);
|
||||
} else { // otherwise
|
||||
uint8_t zr = getSixBitByte(z, r);
|
||||
|
||||
push6bits(out, zr);
|
||||
permute(p_in, z, l, r + 1, out);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief
|
||||
*Definition 11. Let the function hash0 : F 82 × F 82 × (F 62 ) 8 → (F 82 ) 8 be defined as
|
||||
* hash0(x, y, z [0] . . . z [7] ) = k [0] . . . k [7] where
|
||||
* z'[i] = (z[i] mod (63-i)) + i i = 0...3
|
||||
* z'[i+4] = (z[i+4] mod (64-i)) + i i = 0...3
|
||||
* ẑ = check(z');
|
||||
* @param c
|
||||
* @param k this is where the diversified key is put (should be 8 bytes)
|
||||
* @return
|
||||
*/
|
||||
void hash0(uint64_t c, uint8_t k[8]) {
|
||||
c = swapZvalues(c);
|
||||
|
||||
//These 64 bits are divided as c = x, y, z [0] , . . . , z [7]
|
||||
// x = 8 bits
|
||||
// y = 8 bits
|
||||
// z0-z7 6 bits each : 48 bits
|
||||
uint8_t x = (c & 0xFF00000000000000) >> 56;
|
||||
uint8_t y = (c & 0x00FF000000000000) >> 48;
|
||||
uint64_t zP = 0;
|
||||
|
||||
for (int n = 0; n < 4 ; n++) {
|
||||
uint8_t zn = getSixBitByte(c, n);
|
||||
uint8_t zn4 = getSixBitByte(c, n + 4);
|
||||
uint8_t _zn = (zn % (63 - n)) + n;
|
||||
uint8_t _zn4 = (zn4 % (64 - n)) + n;
|
||||
pushbackSixBitByte(&zP, _zn, n);
|
||||
pushbackSixBitByte(&zP, _zn4, n + 4);
|
||||
}
|
||||
|
||||
uint64_t zCaret = check(zP);
|
||||
uint8_t p = pi[x % 35];
|
||||
|
||||
if (x & 1) //Check if x7 is 1
|
||||
p = ~p;
|
||||
|
||||
BitstreamIn_t p_in = { &p, 8, 0 };
|
||||
uint8_t outbuffer[] = {0, 0, 0, 0, 0, 0, 0, 0};
|
||||
BitstreamOut_t out = {outbuffer, 0, 0};
|
||||
permute(&p_in, zCaret, 0, 4, &out); //returns 48 bits? or 6 8-bytes
|
||||
|
||||
//Out is now a buffer containing six-bit bytes, should be 48 bits
|
||||
// if all went well
|
||||
//Shift z-values down onto the lower segment
|
||||
|
||||
uint64_t zTilde = x_bytes_to_num(outbuffer, sizeof(outbuffer));
|
||||
|
||||
zTilde >>= 16;
|
||||
|
||||
for (int i = 0; i < 8; i++) {
|
||||
// the key on index i is first a bit from y
|
||||
// then six bits from z,
|
||||
// then a bit from p
|
||||
|
||||
// Init with zeroes
|
||||
k[i] = 0;
|
||||
// First, place yi leftmost in k
|
||||
//k[i] |= (y << i) & 0x80 ;
|
||||
|
||||
// First, place y(7-i) leftmost in k
|
||||
k[i] |= (y << (7 - i)) & 0x80 ;
|
||||
|
||||
uint8_t zTilde_i = getSixBitByte(zTilde, i);
|
||||
// zTildeI is now on the form 00XXXXXX
|
||||
// with one leftshift, it'll be
|
||||
// 0XXXXXX0
|
||||
// So after leftshift, we can OR it into k
|
||||
// However, when doing complement, we need to
|
||||
// again MASK 0XXXXXX0 (0x7E)
|
||||
zTilde_i <<= 1;
|
||||
|
||||
//Finally, add bit from p or p-mod
|
||||
//Shift bit i into rightmost location (mask only after complement)
|
||||
uint8_t p_i = p >> i & 0x1;
|
||||
|
||||
if (k[i]) { // yi = 1
|
||||
k[i] |= ~zTilde_i & 0x7E;
|
||||
k[i] |= p_i & 1;
|
||||
k[i] += 1;
|
||||
|
||||
} else { // otherwise
|
||||
k[i] |= zTilde_i & 0x7E;
|
||||
k[i] |= (~p_i) & 1;
|
||||
}
|
||||
}
|
||||
}
|
||||
/**
|
||||
* @brief Performs Elite-class key diversification
|
||||
* @param csn
|
||||
* @param key
|
||||
* @param div_key
|
||||
*/
|
||||
void diversifyKey(uint8_t *csn, uint8_t *key, uint8_t *div_key) {
|
||||
// Prepare the DES key
|
||||
mbedtls_des_setkey_enc(&ctx_enc, key);
|
||||
|
||||
uint8_t crypted_csn[8] = {0};
|
||||
|
||||
// Calculate DES(CSN, KEY)
|
||||
mbedtls_des_crypt_ecb(&ctx_enc, csn, crypted_csn);
|
||||
|
||||
//Calculate HASH0(DES))
|
||||
uint64_t c_csn = x_bytes_to_num(crypted_csn, sizeof(crypted_csn));
|
||||
|
||||
hash0(c_csn, div_key);
|
||||
}
|
||||
|
66
lib/loclass/optimized_ikeys.h
Normal file
66
lib/loclass/optimized_ikeys.h
Normal file
|
@ -0,0 +1,66 @@
|
|||
//-----------------------------------------------------------------------------
|
||||
// Borrowed initially from https://github.com/holiman/loclass
|
||||
// More recently from https://github.com/RfidResearchGroup/proxmark3
|
||||
// Copyright (C) 2014 Martin Holst Swende
|
||||
// Copyright (C) Proxmark3 contributors. See AUTHORS.md for details.
|
||||
//
|
||||
// This program is free software: you can redistribute it and/or modify
|
||||
// it under the terms of the GNU General Public License as published by
|
||||
// the Free Software Foundation, either version 3 of the License, or
|
||||
// (at your option) any later version.
|
||||
//
|
||||
// This program is distributed in the hope that it will be useful,
|
||||
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
// GNU General Public License for more details.
|
||||
//
|
||||
// See LICENSE.txt for the text of the license.
|
||||
//-----------------------------------------------------------------------------
|
||||
// WARNING
|
||||
//
|
||||
// THIS CODE IS CREATED FOR EXPERIMENTATION AND EDUCATIONAL USE ONLY.
|
||||
//
|
||||
// USAGE OF THIS CODE IN OTHER WAYS MAY INFRINGE UPON THE INTELLECTUAL
|
||||
// PROPERTY OF OTHER PARTIES, SUCH AS INSIDE SECURE AND HID GLOBAL,
|
||||
// AND MAY EXPOSE YOU TO AN INFRINGEMENT ACTION FROM THOSE PARTIES.
|
||||
//
|
||||
// THIS CODE SHOULD NEVER BE USED TO INFRINGE PATENTS OR INTELLECTUAL PROPERTY RIGHTS.
|
||||
//-----------------------------------------------------------------------------
|
||||
// It is a reconstruction of the cipher engine used in iClass, and RFID techology.
|
||||
//
|
||||
// The implementation is based on the work performed by
|
||||
// Flavio D. Garcia, Gerhard de Koning Gans, Roel Verdult and
|
||||
// Milosch Meriac in the paper "Dismantling IClass".
|
||||
//-----------------------------------------------------------------------------
|
||||
#ifndef IKEYS_H
|
||||
#define IKEYS_H
|
||||
|
||||
#include <inttypes.h>
|
||||
|
||||
/**
|
||||
* @brief
|
||||
*Definition 11. Let the function hash0 : F 82 × F 82 × (F 62 ) 8 → (F 82 ) 8 be defined as
|
||||
* hash0(x, y, z [0] . . . z [7] ) = k [0] . . . k [7] where
|
||||
* z'[i] = (z[i] mod (63-i)) + i i = 0...3
|
||||
* z'[i+4] = (z[i+4] mod (64-i)) + i i = 0...3
|
||||
* ẑ = check(z');
|
||||
* @param c
|
||||
* @param k this is where the diversified key is put (should be 8 bytes)
|
||||
* @return
|
||||
*/
|
||||
void hash0(uint64_t c, uint8_t k[8]);
|
||||
/**
|
||||
* @brief Performs Elite-class key diversification
|
||||
* @param csn
|
||||
* @param key
|
||||
* @param div_key
|
||||
*/
|
||||
|
||||
void diversifyKey(uint8_t *csn, uint8_t *key, uint8_t *div_key);
|
||||
/**
|
||||
* @brief Permutes a key from standard NIST format to Iclass specific format
|
||||
* @param key
|
||||
* @param dest
|
||||
*/
|
||||
|
||||
#endif // IKEYS_H
|
1
lib/mbedtls
Submodule
1
lib/mbedtls
Submodule
|
@ -0,0 +1 @@
|
|||
Subproject commit d65aeb37349ad1a50e0f6c9b694d4b5290d60e49
|
20
lib/mbedtls.scons
Normal file
20
lib/mbedtls.scons
Normal file
|
@ -0,0 +1,20 @@
|
|||
Import("env")
|
||||
|
||||
env.Append(
|
||||
CPPPATH=[
|
||||
"#/lib/mbedtls",
|
||||
"#/lib/mbedtls/include",
|
||||
],
|
||||
CPPDEFINES=[
|
||||
],
|
||||
)
|
||||
|
||||
|
||||
libenv = env.Clone(FW_LIB_NAME="mbedtls")
|
||||
libenv.ApplyLibFlags()
|
||||
|
||||
sources = ["mbedtls/library/des.c", "mbedtls/library/platform_util.c"]
|
||||
|
||||
lib = libenv.StaticLibrary("${FW_LIB_NAME}", sources)
|
||||
libenv.Install("${LIB_DIST_DIR}", lib)
|
||||
Return("lib")
|
Loading…
Reference in a new issue