Iclass UI (#1366)

* Move structs to header
* roll mbedtls into loclass
* Picopass with scene for reading card
* Picopass: fix memory leak
* Lib: return mbedtls back
* Picopass: rename symbols to match naming guide

Co-authored-by: Aleksandr Kutuzov <alleteam@gmail.com>

applications/picopass/application.fam

@@ -4,7 +4,7 @@ App(
     apptype=FlipperAppType.PLUGIN,
     entry_point="picopass_app",
     cdefines=["APP_PICOPASS"],
-    requires=["gui"],
+    requires=["storage", "gui"],
     stack_size=1 * 1024,
     icon="A_Plugins_14",
     order=30,

applications/picopass/picopass.c

@@ -1,397 +1,137 @@
-#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>
+#include "picopass_i.h"
 
 #define TAG "PicoPass"
 
-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, READY, RESULT };
-typedef struct {
-    enum State state;
-    PACS pacs;
-} PluginState;
-
-uint8_t iclass_key[8] = {0xaf, 0xa7, 0x85, 0xa7, 0xda, 0xb3, 0x33, 0x78};
-uint8_t iclass_decryptionkey[16] =
-    {0xb4, 0x21, 0x2c, 0xca, 0xb7, 0xed, 0x21, 0x0f, 0x7b, 0x93, 0xd4, 0x59, 0x39, 0xc7, 0xdd, 0x36};
-ApplicationArea AA1;
-
-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 == 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);
+bool picopass_custom_event_callback(void* context, uint32_t event) {
+    furi_assert(context);
+    Picopass* picopass = context;
+    return scene_manager_handle_custom_event(picopass->scene_manager, event);
 }
 
-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);
+bool picopass_back_event_callback(void* context) {
+    furi_assert(context);
+    Picopass* picopass = context;
+    return scene_manager_handle_back_event(picopass->scene_manager);
 }
 
-static void picopass_state_init(PluginState* const plugin_state) {
-    plugin_state->state = READY;
+void picopass_tick_event_callback(void* context) {
+    furi_assert(context);
+    Picopass* picopass = context;
+    scene_manager_handle_tick_event(picopass->scene_manager);
 }
 
-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;
+Picopass* picopass_alloc() {
+    Picopass* picopass = malloc(sizeof(Picopass));
+
+    picopass->worker = picopass_worker_alloc();
+    picopass->view_dispatcher = view_dispatcher_alloc();
+    picopass->scene_manager = scene_manager_alloc(&picopass_scene_handlers, picopass);
+    view_dispatcher_enable_queue(picopass->view_dispatcher);
+    view_dispatcher_set_event_callback_context(picopass->view_dispatcher, picopass);
+    view_dispatcher_set_custom_event_callback(
+        picopass->view_dispatcher, picopass_custom_event_callback);
+    view_dispatcher_set_navigation_event_callback(
+        picopass->view_dispatcher, picopass_back_event_callback);
+    view_dispatcher_set_tick_event_callback(
+        picopass->view_dispatcher, picopass_tick_event_callback, 100);
+
+    // Picopass device
+    picopass->dev = picopass_device_alloc();
+
+    // Open GUI record
+    picopass->gui = furi_record_open("gui");
+    view_dispatcher_attach_to_gui(
+        picopass->view_dispatcher, picopass->gui, ViewDispatcherTypeFullscreen);
+
+    // Open Notification record
+    picopass->notifications = furi_record_open("notification");
+
+    // Submenu
+    picopass->submenu = submenu_alloc();
+    view_dispatcher_add_view(
+        picopass->view_dispatcher, PicopassViewMenu, submenu_get_view(picopass->submenu));
+
+    // Popup
+    picopass->popup = popup_alloc();
+    view_dispatcher_add_view(
+        picopass->view_dispatcher, PicopassViewPopup, popup_get_view(picopass->popup));
+
+    // Custom Widget
+    picopass->widget = widget_alloc();
+    view_dispatcher_add_view(
+        picopass->view_dispatcher, PicopassViewWidget, widget_get_view(picopass->widget));
+
+    return picopass;
 }
 
-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;
+void picopass_free(Picopass* picopass) {
+    furi_assert(picopass);
+
+    // Submenu
+    view_dispatcher_remove_view(picopass->view_dispatcher, PicopassViewMenu);
+    submenu_free(picopass->submenu);
+
+    // Popup
+    view_dispatcher_remove_view(picopass->view_dispatcher, PicopassViewPopup);
+    popup_free(picopass->popup);
+
+    // Custom Widget
+    view_dispatcher_remove_view(picopass->view_dispatcher, PicopassViewWidget);
+    widget_free(picopass->widget);
+
+    // Worker
+    picopass_worker_stop(picopass->worker);
+    picopass_worker_free(picopass->worker);
+
+    // View Dispatcher
+    view_dispatcher_free(picopass->view_dispatcher);
+
+    // Scene Manager
+    scene_manager_free(picopass->scene_manager);
+
+    // GUI
+    furi_record_close("gui");
+    picopass->gui = NULL;
+
+    // Notifications
+    furi_record_close("notification");
+    picopass->notifications = NULL;
+
+    picopass_device_free(picopass->dev);
+    picopass->dev = NULL;
+
+    free(picopass);
 }
 
-ReturnCode disable_field(ReturnCode rc) {
-    st25r3916TxRxOff();
-    rfalLowPowerModeStart();
-    return rc;
+static const NotificationSequence picopass_sequence_blink_start_blue = {
+    &message_blink_start_10,
+    &message_blink_set_color_blue,
+    &message_do_not_reset,
+    NULL,
+};
+
+static const NotificationSequence picopass_sequence_blink_stop = {
+    &message_blink_stop,
+    NULL,
+};
+
+void picopass_blink_start(Picopass* picopass) {
+    notification_message(picopass->notifications, &picopass_sequence_blink_start_blue);
 }
 
-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);
+void picopass_blink_stop(Picopass* picopass) {
+    notification_message(picopass->notifications, &picopass_sequence_blink_stop);
 }
 
 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);
+    Picopass* picopass = picopass_alloc();
+
+    scene_manager_next_scene(picopass->scene_manager, PicopassSceneStart);
+
+    view_dispatcher_run(picopass->view_dispatcher);
+
+    picopass_free(picopass);
 
     return 0;
 }

applications/picopass/picopass.h

@@ -1,9 +1,3 @@
 #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
+typedef struct Picopass Picopass;

applications/picopass/picopass_device.c

@@ -0,0 +1,33 @@
+#include "picopass_device.h"
+
+#include <toolbox/path.h>
+#include <flipper_format/flipper_format.h>
+
+#define TAG "PicopassDevice"
+
+PicopassDevice* picopass_device_alloc() {
+    PicopassDevice* picopass_dev = malloc(sizeof(PicopassDevice));
+    picopass_dev->storage = furi_record_open("storage");
+    picopass_dev->dialogs = furi_record_open("dialogs");
+    return picopass_dev;
+}
+
+void picopass_device_clear(PicopassDevice* dev) {
+    furi_assert(dev);
+
+    picopass_device_data_clear(&dev->dev_data);
+    memset(&dev->dev_data, 0, sizeof(dev->dev_data));
+}
+
+void picopass_device_free(PicopassDevice* picopass_dev) {
+    furi_assert(picopass_dev);
+    picopass_device_clear(picopass_dev);
+    furi_record_close("storage");
+    furi_record_close("dialogs");
+    free(picopass_dev);
+}
+
+void picopass_device_data_clear(PicopassDeviceData* dev_data) {
+    FURI_LOG_D(TAG, "picopass_device_data_clear");
+    memset(&dev_data->AA1, 0, sizeof(ApplicationArea));
+}

applications/picopass/picopass_device.h

@@ -0,0 +1,43 @@
+#pragma once
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <storage/storage.h>
+#include <dialogs/dialogs.h>
+
+#include <rfal_picopass.h>
+
+typedef struct {
+    bool valid;
+    uint8_t bitLength;
+    uint8_t FacilityCode;
+    uint16_t CardNumber;
+} PicopassWiegandRecord;
+
+typedef struct {
+    bool biometrics;
+    uint8_t encryption;
+    uint8_t credential[8];
+    uint8_t pin0[8];
+    uint8_t pin1[8];
+    PicopassWiegandRecord record;
+} PicopassPacs;
+
+typedef struct {
+    ApplicationArea AA1;
+    PicopassPacs pacs;
+} PicopassDeviceData;
+
+typedef struct {
+    Storage* storage;
+    DialogsApp* dialogs;
+    PicopassDeviceData dev_data;
+} PicopassDevice;
+
+PicopassDevice* picopass_device_alloc();
+
+void picopass_device_free(PicopassDevice* picopass_dev);
+
+void picopass_device_data_clear(PicopassDeviceData* dev_data);
+
+void picopass_device_clear(PicopassDevice* dev);

applications/picopass/picopass_i.h

@@ -0,0 +1,66 @@
+#pragma once
+
+#include "picopass.h"
+#include "picopass_worker.h"
+#include "picopass_device.h"
+
+#include <rfal_picopass.h>
+
+#include <furi.h>
+#include <gui/gui.h>
+#include <gui/view_dispatcher.h>
+#include <gui/scene_manager.h>
+#include <notification/notification_messages.h>
+
+#include <gui/modules/submenu.h>
+#include <gui/modules/popup.h>
+#include <gui/modules/widget.h>
+
+#include <input/input.h>
+
+#include <picopass/scenes/picopass_scene.h>
+
+#include <storage/storage.h>
+#include <lib/toolbox/path.h>
+
+enum PicopassCustomEvent {
+    // Reserve first 100 events for button types and indexes, starting from 0
+    PicopassCustomEventReserved = 100,
+
+    PicopassCustomEventViewExit,
+    PicopassCustomEventWorkerExit,
+    PicopassCustomEventByteInputDone,
+    PicopassCustomEventTextInputDone,
+    PicopassCustomEventDictAttackDone,
+};
+
+typedef enum {
+    EventTypeTick,
+    EventTypeKey,
+} EventType;
+
+struct Picopass {
+    PicopassWorker* worker;
+    ViewDispatcher* view_dispatcher;
+    Gui* gui;
+    NotificationApp* notifications;
+    SceneManager* scene_manager;
+    PicopassDevice* dev;
+
+    // Common Views
+    Submenu* submenu;
+    Popup* popup;
+    Widget* widget;
+};
+
+typedef enum {
+    PicopassViewMenu,
+    PicopassViewPopup,
+    PicopassViewWidget,
+} PicopassView;
+
+Picopass* picopass_alloc();
+
+void picopass_blink_start(Picopass* picopass);
+
+void picopass_blink_stop(Picopass* picopass);

applications/picopass/picopass_worker.c

@@ -0,0 +1,317 @@
+#include "picopass_worker_i.h"
+#include <furi_hal.h>
+
+#include <stdlib.h>
+#include <st25r3916.h>
+#include <rfal_analogConfig.h>
+#include <rfal_rf.h>
+#include <rfal_nfc.h>
+
+#include <mbedtls/des.h>
+#include <loclass/optimized_ikeys.h>
+#include <loclass/optimized_cipher.h>
+
+#include <platform.h>
+
+#define TAG "PicopassWorker"
+
+const uint8_t picopass_iclass_key[] = {0xaf, 0xa7, 0x85, 0xa7, 0xda, 0xb3, 0x33, 0x78};
+const uint8_t picopass_iclass_decryptionkey[] =
+    {0xb4, 0x21, 0x2c, 0xca, 0xb7, 0xed, 0x21, 0x0f, 0x7b, 0x93, 0xd4, 0x59, 0x39, 0xc7, 0xdd, 0x36};
+
+static void picopass_worker_enable_field() {
+    st25r3916TxRxOn();
+    rfalLowPowerModeStop();
+    rfalWorker();
+}
+
+static ReturnCode picopass_worker_disable_field(ReturnCode rc) {
+    st25r3916TxRxOff();
+    rfalLowPowerModeStart();
+    return rc;
+}
+
+static ReturnCode picopass_worker_decrypt(uint8_t* enc_data, uint8_t* dec_data) {
+    uint8_t key[32] = {0};
+    memcpy(key, picopass_iclass_decryptionkey, sizeof(picopass_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;
+}
+
+static ReturnCode picopass_worker_parse_wiegand(uint8_t* data, PicopassWiegandRecord* 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;
+}
+
+/***************************** Picopass Worker API *******************************/
+
+PicopassWorker* picopass_worker_alloc() {
+    PicopassWorker* picopass_worker = malloc(sizeof(PicopassWorker));
+
+    // Worker thread attributes
+    picopass_worker->thread = furi_thread_alloc();
+    furi_thread_set_name(picopass_worker->thread, "PicopassWorker");
+    furi_thread_set_stack_size(picopass_worker->thread, 8192);
+    furi_thread_set_callback(picopass_worker->thread, picopass_worker_task);
+    furi_thread_set_context(picopass_worker->thread, picopass_worker);
+
+    picopass_worker->callback = NULL;
+    picopass_worker->context = NULL;
+    picopass_worker->storage = furi_record_open("storage");
+
+    picopass_worker_change_state(picopass_worker, PicopassWorkerStateReady);
+
+    return picopass_worker;
+}
+
+void picopass_worker_free(PicopassWorker* picopass_worker) {
+    furi_assert(picopass_worker);
+
+    furi_thread_free(picopass_worker->thread);
+
+    furi_record_close("storage");
+
+    free(picopass_worker);
+}
+
+PicopassWorkerState picopass_worker_get_state(PicopassWorker* picopass_worker) {
+    return picopass_worker->state;
+}
+
+void picopass_worker_start(
+    PicopassWorker* picopass_worker,
+    PicopassWorkerState state,
+    PicopassDeviceData* dev_data,
+    PicopassWorkerCallback callback,
+    void* context) {
+    furi_assert(picopass_worker);
+    furi_assert(dev_data);
+
+    FURI_LOG_D(TAG, "picopass_worker_start");
+
+    picopass_worker->callback = callback;
+    picopass_worker->context = context;
+    picopass_worker->dev_data = dev_data;
+    picopass_worker_change_state(picopass_worker, state);
+    furi_thread_start(picopass_worker->thread);
+}
+
+void picopass_worker_stop(PicopassWorker* picopass_worker) {
+    furi_assert(picopass_worker);
+    if(picopass_worker->state == PicopassWorkerStateBroken ||
+       picopass_worker->state == PicopassWorkerStateReady) {
+        return;
+    }
+    picopass_worker_disable_field(ERR_NONE);
+
+    picopass_worker_change_state(picopass_worker, PicopassWorkerStateStop);
+    furi_thread_join(picopass_worker->thread);
+}
+
+void picopass_worker_change_state(PicopassWorker* picopass_worker, PicopassWorkerState state) {
+    picopass_worker->state = state;
+}
+
+/***************************** Picopass Worker Thread *******************************/
+
+ReturnCode picopass_detect_card(int timeout) {
+    UNUSED(timeout);
+
+    ReturnCode err;
+
+    err = rfalPicoPassPollerInitialize();
+    if(err != ERR_NONE) {
+        FURI_LOG_E(TAG, "rfalPicoPassPollerInitialize error %d", err);
+        return err;
+    }
+
+    err = rfalFieldOnAndStartGT();
+    if(err != ERR_NONE) {
+        FURI_LOG_E(TAG, "rfalFieldOnAndStartGT error %d", err);
+        return err;
+    }
+
+    err = rfalPicoPassPollerCheckPresence();
+    if(err != ERR_RF_COLLISION) {
+        FURI_LOG_E(TAG, "rfalPicoPassPollerCheckPresence error %d", err);
+        return err;
+    }
+
+    return ERR_NONE;
+}
+
+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};
+
+    err = rfalPicoPassPollerIdentify(&idRes);
+    if(err != ERR_NONE) {
+        FURI_LOG_E(TAG, "rfalPicoPassPollerIdentify error %d", err);
+        return err;
+    }
+
+    err = rfalPicoPassPollerSelect(idRes.CSN, &selRes);
+    if(err != ERR_NONE) {
+        FURI_LOG_E(TAG, "rfalPicoPassPollerSelect error %d", err);
+        return err;
+    }
+
+    err = rfalPicoPassPollerReadCheck(&rcRes);
+    if(err != ERR_NONE) {
+        FURI_LOG_E(TAG, "rfalPicoPassPollerReadCheck error %d", err);
+        return err;
+    }
+    memcpy(ccnr, rcRes.CCNR, sizeof(rcRes.CCNR)); // last 4 bytes left 0
+
+    diversifyKey(selRes.CSN, picopass_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 err;
+    }
+
+    for(size_t i = 0; i < 4; i++) {
+        FURI_LOG_D(TAG, "rfalPicoPassPollerReadBlock block %d", i + 6);
+        rfalPicoPassReadBlockRes block;
+        err = rfalPicoPassPollerReadBlock(i + 6, &block);
+        if(err != ERR_NONE) {
+            FURI_LOG_E(TAG, "rfalPicoPassPollerReadBlock error %d", err);
+            return err;
+        }
+
+        FURI_LOG_D(
+            TAG,
+            "rfalPicoPassPollerReadBlock %d %02x%02x%02x%02x%02x%02x%02x%02x",
+            i + 6,
+            block.data[0],
+            block.data[1],
+            block.data[2],
+            block.data[3],
+            block.data[4],
+            block.data[5],
+            block.data[6],
+            block.data[7]);
+
+        memcpy(&(AA1->block[i]), &block, sizeof(block));
+    }
+
+    return ERR_NONE;
+}
+
+int32_t picopass_worker_task(void* context) {
+    PicopassWorker* picopass_worker = context;
+
+    picopass_worker_enable_field();
+    if(picopass_worker->state == PicopassWorkerStateDetect) {
+        picopass_worker_detect(picopass_worker);
+    }
+    picopass_worker_disable_field(ERR_NONE);
+
+    picopass_worker_change_state(picopass_worker, PicopassWorkerStateReady);
+
+    return 0;
+}
+
+void picopass_worker_detect(PicopassWorker* picopass_worker) {
+    picopass_device_data_clear(picopass_worker->dev_data);
+    PicopassDeviceData* dev_data = picopass_worker->dev_data;
+
+    ApplicationArea* AA1 = &dev_data->AA1;
+    PicopassPacs* pacs = &dev_data->pacs;
+    ReturnCode err;
+
+    while(picopass_worker->state == PicopassWorkerStateDetect) {
+        FURI_LOG_D(TAG, "PicopassWorkerStateDetect");
+        if(picopass_detect_card(1000) == ERR_NONE) {
+            // Process first found device
+            FURI_LOG_D(TAG, "picopass_read_card");
+            err = picopass_read_card(AA1);
+            if(err != ERR_NONE) {
+                FURI_LOG_E(TAG, "picopass_read_card error %d", err);
+            }
+
+            pacs->biometrics = AA1->block[0].data[4];
+            pacs->encryption = AA1->block[0].data[7];
+
+            if(pacs->encryption == 0x17) {
+                FURI_LOG_D(TAG, "3DES Encrypted");
+                err = picopass_worker_decrypt(AA1->block[1].data, pacs->credential);
+                if(err != ERR_NONE) {
+                    FURI_LOG_E(TAG, "decrypt error %d", err);
+                    break;
+                }
+                FURI_LOG_D(TAG, "Decrypted 7");
+
+                err = picopass_worker_decrypt(AA1->block[2].data, pacs->pin0);
+                if(err != ERR_NONE) {
+                    FURI_LOG_E(TAG, "decrypt error %d", err);
+                    break;
+                }
+                FURI_LOG_D(TAG, "Decrypted 8");
+
+                err = picopass_worker_decrypt(AA1->block[3].data, pacs->pin1);
+                if(err != ERR_NONE) {
+                    FURI_LOG_E(TAG, "decrypt error %d", err);
+                    break;
+                }
+                FURI_LOG_D(TAG, "Decrypted 9");
+            } else if(pacs->encryption == 0x14) {
+                FURI_LOG_D(TAG, "No Encryption");
+                memcpy(pacs->credential, AA1->block[1].data, RFAL_PICOPASS_MAX_BLOCK_LEN);
+                memcpy(pacs->pin0, AA1->block[2].data, RFAL_PICOPASS_MAX_BLOCK_LEN);
+                memcpy(pacs->pin1, AA1->block[3].data, RFAL_PICOPASS_MAX_BLOCK_LEN);
+            } else if(pacs->encryption == 0x15) {
+                FURI_LOG_D(TAG, "DES Encrypted");
+            } else {
+                FURI_LOG_D(TAG, "Unknown encryption");
+                break;
+            }
+
+            picopass_worker_parse_wiegand(pacs->credential, &pacs->record);
+
+            // Notify caller and exit
+            if(picopass_worker->callback) {
+                picopass_worker->callback(PicopassWorkerEventSuccess, picopass_worker->context);
+            }
+            break;
+        }
+        osDelay(100);
+    }
+}

applications/picopass/picopass_worker.h

@@ -0,0 +1,45 @@
+#pragma once
+
+#include "picopass_device.h"
+
+typedef struct PicopassWorker PicopassWorker;
+
+typedef enum {
+    // Init states
+    PicopassWorkerStateNone,
+    PicopassWorkerStateBroken,
+    PicopassWorkerStateReady,
+    // Main worker states
+    PicopassWorkerStateDetect,
+    // Transition
+    PicopassWorkerStateStop,
+} PicopassWorkerState;
+
+typedef enum {
+    // Reserve first 50 events for application events
+    PicopassWorkerEventReserved = 50,
+
+    // Picopass worker common events
+    PicopassWorkerEventSuccess,
+    PicopassWorkerEventFail,
+    PicopassWorkerEventNoCardDetected,
+
+    PicopassWorkerEventStartReading,
+} PicopassWorkerEvent;
+
+typedef void (*PicopassWorkerCallback)(PicopassWorkerEvent event, void* context);
+
+PicopassWorker* picopass_worker_alloc();
+
+PicopassWorkerState picopass_worker_get_state(PicopassWorker* picopass_worker);
+
+void picopass_worker_free(PicopassWorker* picopass_worker);
+
+void picopass_worker_start(
+    PicopassWorker* picopass_worker,
+    PicopassWorkerState state,
+    PicopassDeviceData* dev_data,
+    PicopassWorkerCallback callback,
+    void* context);
+
+void picopass_worker_stop(PicopassWorker* picopass_worker);

applications/picopass/picopass_worker_i.h

@@ -0,0 +1,24 @@
+#pragma once
+
+#include "picopass_worker.h"
+#include "picopass_i.h"
+
+#include <furi.h>
+#include <lib/toolbox/stream/file_stream.h>
+
+struct PicopassWorker {
+    FuriThread* thread;
+    Storage* storage;
+
+    PicopassDeviceData* dev_data;
+    PicopassWorkerCallback callback;
+    void* context;
+
+    PicopassWorkerState state;
+};
+
+void picopass_worker_change_state(PicopassWorker* picopass_worker, PicopassWorkerState state);
+
+int32_t picopass_worker_task(void* context);
+
+void picopass_worker_detect(PicopassWorker* picopass_worker);

applications/picopass/scenes/picopass_scene.c

@@ -0,0 +1,30 @@
+#include "picopass_scene.h"
+
+// Generate scene on_enter handlers array
+#define ADD_SCENE(prefix, name, id) prefix##_scene_##name##_on_enter,
+void (*const picopass_on_enter_handlers[])(void*) = {
+#include "picopass_scene_config.h"
+};
+#undef ADD_SCENE
+
+// Generate scene on_event handlers array
+#define ADD_SCENE(prefix, name, id) prefix##_scene_##name##_on_event,
+bool (*const picopass_on_event_handlers[])(void* context, SceneManagerEvent event) = {
+#include "picopass_scene_config.h"
+};
+#undef ADD_SCENE
+
+// Generate scene on_exit handlers array
+#define ADD_SCENE(prefix, name, id) prefix##_scene_##name##_on_exit,
+void (*const picopass_on_exit_handlers[])(void* context) = {
+#include "picopass_scene_config.h"
+};
+#undef ADD_SCENE
+
+// Initialize scene handlers configuration structure
+const SceneManagerHandlers picopass_scene_handlers = {
+    .on_enter_handlers = picopass_on_enter_handlers,
+    .on_event_handlers = picopass_on_event_handlers,
+    .on_exit_handlers = picopass_on_exit_handlers,
+    .scene_num = PicopassSceneNum,
+};

applications/picopass/scenes/picopass_scene.h

@@ -0,0 +1,29 @@
+#pragma once
+
+#include <gui/scene_manager.h>
+
+// Generate scene id and total number
+#define ADD_SCENE(prefix, name, id) PicopassScene##id,
+typedef enum {
+#include "picopass_scene_config.h"
+    PicopassSceneNum,
+} PicopassScene;
+#undef ADD_SCENE
+
+extern const SceneManagerHandlers picopass_scene_handlers;
+
+// Generate scene on_enter handlers declaration
+#define ADD_SCENE(prefix, name, id) void prefix##_scene_##name##_on_enter(void*);
+#include "picopass_scene_config.h"
+#undef ADD_SCENE
+
+// Generate scene on_event handlers declaration
+#define ADD_SCENE(prefix, name, id) \
+    bool prefix##_scene_##name##_on_event(void* context, SceneManagerEvent event);
+#include "picopass_scene_config.h"
+#undef ADD_SCENE
+
+// Generate scene on_exit handlers declaration
+#define ADD_SCENE(prefix, name, id) void prefix##_scene_##name##_on_exit(void* context);
+#include "picopass_scene_config.h"
+#undef ADD_SCENE

applications/picopass/scenes/picopass_scene_config.h

@@ -0,0 +1,3 @@
+ADD_SCENE(picopass, start, Start)
+ADD_SCENE(picopass, read_card, ReadCard)
+ADD_SCENE(picopass, read_card_success, ReadCardSuccess)

applications/picopass/scenes/picopass_scene_read_card.c

@@ -0,0 +1,55 @@
+#include "../picopass_i.h"
+#include <dolphin/dolphin.h>
+
+void picopass_read_card_worker_callback(PicopassWorkerEvent event, void* context) {
+    UNUSED(event);
+    Picopass* picopass = context;
+    view_dispatcher_send_custom_event(picopass->view_dispatcher, PicopassCustomEventWorkerExit);
+}
+
+void picopass_scene_read_card_on_enter(void* context) {
+    Picopass* picopass = context;
+    DOLPHIN_DEED(DolphinDeedNfcRead);
+
+    // Setup view
+    Popup* popup = picopass->popup;
+    popup_set_header(popup, "Detecting\npicopass card", 70, 34, AlignLeft, AlignTop);
+    popup_set_icon(popup, 0, 3, &I_RFIDDolphinReceive_97x61);
+
+    // Start worker
+    view_dispatcher_switch_to_view(picopass->view_dispatcher, PicopassViewPopup);
+    picopass_worker_start(
+        picopass->worker,
+        PicopassWorkerStateDetect,
+        &picopass->dev->dev_data,
+        picopass_read_card_worker_callback,
+        picopass);
+
+    picopass_blink_start(picopass);
+}
+
+bool picopass_scene_read_card_on_event(void* context, SceneManagerEvent event) {
+    Picopass* picopass = context;
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        if(event.event == PicopassCustomEventWorkerExit) {
+            scene_manager_next_scene(picopass->scene_manager, PicopassSceneReadCardSuccess);
+            consumed = true;
+        }
+    } else if(event.type == SceneManagerEventTypeTick) {
+        consumed = true;
+    }
+    return consumed;
+}
+
+void picopass_scene_read_card_on_exit(void* context) {
+    Picopass* picopass = context;
+
+    // Stop worker
+    picopass_worker_stop(picopass->worker);
+    // Clear view
+    popup_reset(picopass->popup);
+
+    picopass_blink_stop(picopass);
+}

applications/picopass/scenes/picopass_scene_read_card_success.c

@@ -0,0 +1,78 @@
+#include "../picopass_i.h"
+#include <dolphin/dolphin.h>
+
+void picopass_scene_read_card_success_widget_callback(
+    GuiButtonType result,
+    InputType type,
+    void* context) {
+    furi_assert(context);
+    Picopass* picopass = context;
+
+    if(type == InputTypeShort) {
+        view_dispatcher_send_custom_event(picopass->view_dispatcher, result);
+    }
+}
+
+void picopass_scene_read_card_success_on_enter(void* context) {
+    Picopass* picopass = context;
+    string_t credential_str;
+    string_t wiegand_str;
+    string_init(credential_str);
+    string_init(wiegand_str);
+
+    DOLPHIN_DEED(DolphinDeedNfcReadSuccess);
+
+    // Send notification
+    notification_message(picopass->notifications, &sequence_success);
+
+    // Setup view
+    PicopassPacs* pacs = &picopass->dev->dev_data.pacs;
+    Widget* widget = picopass->widget;
+
+    string_set_str(credential_str, "");
+    for(uint8_t i = 0; i < RFAL_PICOPASS_MAX_BLOCK_LEN; i++) {
+        string_cat_printf(credential_str, " %02X", pacs->credential[i]);
+    }
+
+    if(pacs->record.valid) {
+        string_cat_printf(
+            wiegand_str, "FC: %03u CN: %05u", pacs->record.FacilityCode, pacs->record.CardNumber);
+    }
+
+    widget_add_button_element(
+        widget,
+        GuiButtonTypeLeft,
+        "Retry",
+        picopass_scene_read_card_success_widget_callback,
+        picopass);
+    if(pacs->record.valid) {
+        widget_add_string_element(
+            widget, 64, 12, AlignCenter, AlignCenter, FontPrimary, string_get_cstr(wiegand_str));
+    }
+    widget_add_string_element(
+        widget, 64, 32, AlignCenter, AlignCenter, FontSecondary, string_get_cstr(credential_str));
+
+    string_clear(credential_str);
+    string_clear(wiegand_str);
+
+    view_dispatcher_switch_to_view(picopass->view_dispatcher, PicopassViewWidget);
+}
+
+bool picopass_scene_read_card_success_on_event(void* context, SceneManagerEvent event) {
+    Picopass* picopass = context;
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        if(event.event == GuiButtonTypeLeft) {
+            consumed = scene_manager_previous_scene(picopass->scene_manager);
+        }
+    }
+    return consumed;
+}
+
+void picopass_scene_read_card_success_on_exit(void* context) {
+    Picopass* picopass = context;
+
+    // Clear view
+    widget_reset(picopass->widget);
+}

applications/picopass/scenes/picopass_scene_start.c

@@ -0,0 +1,45 @@
+#include "../picopass_i.h"
+enum SubmenuIndex {
+    SubmenuIndexRead,
+    SubmenuIndexRunScript,
+    SubmenuIndexSaved,
+    SubmenuIndexAddManualy,
+    SubmenuIndexDebug,
+};
+
+void picopass_scene_start_submenu_callback(void* context, uint32_t index) {
+    Picopass* picopass = context;
+    view_dispatcher_send_custom_event(picopass->view_dispatcher, index);
+}
+void picopass_scene_start_on_enter(void* context) {
+    Picopass* picopass = context;
+
+    Submenu* submenu = picopass->submenu;
+    submenu_add_item(
+        submenu, "Read Card", SubmenuIndexRead, picopass_scene_start_submenu_callback, picopass);
+
+    submenu_set_selected_item(
+        submenu, scene_manager_get_scene_state(picopass->scene_manager, PicopassSceneStart));
+    picopass_device_clear(picopass->dev);
+    view_dispatcher_switch_to_view(picopass->view_dispatcher, PicopassViewMenu);
+}
+
+bool picopass_scene_start_on_event(void* context, SceneManagerEvent event) {
+    Picopass* picopass = context;
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        if(event.event == SubmenuIndexRead) {
+            scene_manager_next_scene(picopass->scene_manager, PicopassSceneReadCard);
+            consumed = true;
+        }
+        scene_manager_set_scene_state(picopass->scene_manager, PicopassSceneStart, event.event);
+    }
+
+    return consumed;
+}
+
+void picopass_scene_start_on_exit(void* context) {
+    Picopass* picopass = context;
+    submenu_reset(picopass->submenu);
+}

lib/loclass/optimized_ikeys.c

@@ -304,7 +304,7 @@ void hash0(uint64_t c, uint8_t k[8]) {
  * @param key
  * @param div_key
  */
-void diversifyKey(uint8_t *csn, uint8_t *key, uint8_t *div_key) {
+void diversifyKey(uint8_t *csn, const uint8_t *key, uint8_t *div_key) {
     // Prepare the DES key
     mbedtls_des_setkey_enc(&ctx_enc, key);
 

lib/loclass/optimized_ikeys.h

@@ -56,7 +56,7 @@ void hash0(uint64_t c, uint8_t k[8]);
  * @param div_key
  */
 
-void diversifyKey(uint8_t *csn, uint8_t *key, uint8_t *div_key);
+void diversifyKey(uint8_t *csn, const uint8_t *key, uint8_t *div_key);
 /**
  * @brief Permutes a key from standard NIST format to Iclass specific format
  * @param key