NFC: Support NTAG4xx detection and basic info

applications/main/nfc/helpers/protocol_support/nfc_protocol_support_defs.c

@@ -21,6 +21,7 @@
 #include "mf_desfire/mf_desfire.h"
 #include "slix/slix.h"
 #include "st25tb/st25tb.h"
+#include "ntag4xx/ntag4xx.h"
 
 /**
  * @brief Array of pointers to concrete protocol support implementations.
@@ -43,5 +44,6 @@ const NfcProtocolSupportBase* nfc_protocol_support[NfcProtocolNum] = {
     [NfcProtocolMfDesfire] = &nfc_protocol_support_mf_desfire,
     [NfcProtocolSlix] = &nfc_protocol_support_slix,
     [NfcProtocolSt25tb] = &nfc_protocol_support_st25tb,
+    [NfcProtocolNtag4xx] = &nfc_protocol_support_ntag4xx,
     /* Add new protocol support implementations here */
 };

applications/main/nfc/helpers/protocol_support/ntag4xx/ntag4xx.c

@@ -0,0 +1,133 @@
+#include "ntag4xx.h"
+#include "ntag4xx_render.h"
+
+#include <nfc/protocols/ntag4xx/ntag4xx_poller.h>
+
+#include "nfc/nfc_app_i.h"
+
+#include "../nfc_protocol_support_common.h"
+#include "../nfc_protocol_support_gui_common.h"
+#include "../iso14443_4a/iso14443_4a_i.h"
+
+static void nfc_scene_info_on_enter_ntag4xx(NfcApp* instance) {
+    const NfcDevice* device = instance->nfc_device;
+    const Ntag4xxData* data = nfc_device_get_data(device, NfcProtocolNtag4xx);
+
+    FuriString* temp_str = furi_string_alloc();
+    nfc_append_filename_string_when_present(instance, temp_str);
+    furi_string_cat_printf(
+        temp_str, "\e#%s\n", nfc_device_get_name(device, NfcDeviceNameTypeFull));
+    nfc_render_ntag4xx_info(data, NfcProtocolFormatTypeFull, temp_str);
+
+    widget_add_text_scroll_element(
+        instance->widget, 0, 0, 128, 64, furi_string_get_cstr(temp_str));
+
+    furi_string_free(temp_str);
+}
+
+static void nfc_scene_more_info_on_enter_ntag4xx(NfcApp* instance) {
+    const NfcDevice* device = instance->nfc_device;
+    const Ntag4xxData* data = nfc_device_get_data(device, NfcProtocolNtag4xx);
+
+    furi_string_reset(instance->text_box_store);
+    nfc_render_ntag4xx_data(data, instance->text_box_store);
+
+    text_box_set_font(instance->text_box, TextBoxFontHex);
+    text_box_set_text(instance->text_box, furi_string_get_cstr(instance->text_box_store));
+
+    view_dispatcher_switch_to_view(instance->view_dispatcher, NfcViewTextBox);
+}
+
+static NfcCommand nfc_scene_read_poller_callback_ntag4xx(NfcGenericEvent event, void* context) {
+    furi_assert(event.protocol == NfcProtocolNtag4xx);
+
+    NfcCommand command = NfcCommandContinue;
+
+    NfcApp* instance = context;
+    const Ntag4xxPollerEvent* ntag4xx_event = event.event_data;
+
+    if(ntag4xx_event->type == Ntag4xxPollerEventTypeReadSuccess) {
+        nfc_device_set_data(
+            instance->nfc_device, NfcProtocolNtag4xx, nfc_poller_get_data(instance->poller));
+        view_dispatcher_send_custom_event(instance->view_dispatcher, NfcCustomEventPollerSuccess);
+        command = NfcCommandStop;
+    } else if(ntag4xx_event->type == Ntag4xxPollerEventTypeReadFailed) {
+        command = NfcCommandReset;
+    }
+
+    return command;
+}
+
+static void nfc_scene_read_on_enter_ntag4xx(NfcApp* instance) {
+    nfc_poller_start(instance->poller, nfc_scene_read_poller_callback_ntag4xx, instance);
+}
+
+static void nfc_scene_read_success_on_enter_ntag4xx(NfcApp* instance) {
+    const NfcDevice* device = instance->nfc_device;
+    const Ntag4xxData* data = nfc_device_get_data(device, NfcProtocolNtag4xx);
+
+    FuriString* temp_str = furi_string_alloc();
+    furi_string_cat_printf(
+        temp_str, "\e#%s\n", nfc_device_get_name(device, NfcDeviceNameTypeFull));
+    nfc_render_ntag4xx_info(data, NfcProtocolFormatTypeShort, temp_str);
+
+    widget_add_text_scroll_element(
+        instance->widget, 0, 0, 128, 52, furi_string_get_cstr(temp_str));
+
+    furi_string_free(temp_str);
+}
+
+static void nfc_scene_emulate_on_enter_ntag4xx(NfcApp* instance) {
+    const Iso14443_4aData* iso14443_4a_data =
+        nfc_device_get_data(instance->nfc_device, NfcProtocolIso14443_4a);
+
+    instance->listener =
+        nfc_listener_alloc(instance->nfc, NfcProtocolIso14443_4a, iso14443_4a_data);
+    nfc_listener_start(
+        instance->listener, nfc_scene_emulate_listener_callback_iso14443_4a, instance);
+}
+
+const NfcProtocolSupportBase nfc_protocol_support_ntag4xx = {
+    .features = NfcProtocolFeatureEmulateUid | NfcProtocolFeatureMoreInfo,
+
+    .scene_info =
+        {
+            .on_enter = nfc_scene_info_on_enter_ntag4xx,
+            .on_event = nfc_protocol_support_common_on_event_empty,
+        },
+    .scene_more_info =
+        {
+            .on_enter = nfc_scene_more_info_on_enter_ntag4xx,
+            .on_event = nfc_protocol_support_common_on_event_empty,
+        },
+    .scene_read =
+        {
+            .on_enter = nfc_scene_read_on_enter_ntag4xx,
+            .on_event = nfc_protocol_support_common_on_event_empty,
+        },
+    .scene_read_menu =
+        {
+            .on_enter = nfc_protocol_support_common_on_enter_empty,
+            .on_event = nfc_protocol_support_common_on_event_empty,
+        },
+    .scene_read_success =
+        {
+            .on_enter = nfc_scene_read_success_on_enter_ntag4xx,
+            .on_event = nfc_protocol_support_common_on_event_empty,
+        },
+    .scene_saved_menu =
+        {
+            .on_enter = nfc_protocol_support_common_on_enter_empty,
+            .on_event = nfc_protocol_support_common_on_event_empty,
+        },
+    .scene_save_name =
+        {
+            .on_enter = nfc_protocol_support_common_on_enter_empty,
+            .on_event = nfc_protocol_support_common_on_event_empty,
+        },
+    .scene_emulate =
+        {
+            .on_enter = nfc_scene_emulate_on_enter_ntag4xx,
+            .on_event = nfc_protocol_support_common_on_event_empty,
+        },
+};

applications/main/nfc/helpers/protocol_support/ntag4xx/ntag4xx.h

@@ -0,0 +1,5 @@
+#pragma once
+
+#include "../nfc_protocol_support_base.h"
+
+extern const NfcProtocolSupportBase nfc_protocol_support_ntag4xx;

applications/main/nfc/helpers/protocol_support/ntag4xx/ntag4xx_render.c

@@ -0,0 +1,110 @@
+#include "ntag4xx_render.h"
+
+#include "../iso14443_4a/iso14443_4a_render.h"
+
+void nfc_render_ntag4xx_info(
+    const Ntag4xxData* data,
+    NfcProtocolFormatType format_type,
+    FuriString* str) {
+    nfc_render_iso14443_4a_brief(ntag4xx_get_base_data(data), str);
+
+    const Ntag4xxType type = ntag4xx_get_type_from_version(&data->version);
+    if(type >= Ntag4xxTypeUnknown) {
+        furi_string_cat(str, "Memory Size: unknown");
+    } else {
+        size_t size_cc = 32;
+        size_t size_ndef = 0;
+        size_t size_proprietary = 0;
+        bool has_tagtamper = false;
+        switch(type) {
+        case Ntag4xxType413DNA:
+            size_ndef = 128;
+            size_proprietary = 0;
+            break;
+        case Ntag4xxType424DNATT:
+            has_tagtamper = true;
+            /* fall-through */
+        case Ntag4xxType424DNA:
+            size_ndef = 256;
+            size_proprietary = 128;
+            break;
+        case Ntag4xxType426QDNATT:
+            has_tagtamper = true;
+            /* fall-through */
+        case Ntag4xxType426QDNA:
+            size_ndef = 768;
+            size_proprietary = 128;
+            break;
+        default:
+            break;
+        }
+        furi_string_cat_printf(
+            str, "\nMemory Size: %zu bytes\n", size_cc + size_ndef + size_proprietary);
+        furi_string_cat_printf(str, "Usable NDEF Size: %zu bytes\n", size_ndef - sizeof(uint16_t));
+        furi_string_cat_printf(str, "Capability Cont.: %zu bytes\n", size_cc);
+        if(size_proprietary) {
+            furi_string_cat_printf(str, "Proprietary File: %zu bytes\n", size_proprietary);
+        }
+        furi_string_cat_printf(str, "TagTamper: %ssupported", has_tagtamper ? "" : "not ");
+    }
+
+    if(format_type != NfcProtocolFormatTypeFull) return;
+
+    furi_string_cat(str, "\n\e#ISO14443-4 data");
+    nfc_render_iso14443_4a_extra(ntag4xx_get_base_data(data), str);
+}
+
+void nfc_render_ntag4xx_data(const Ntag4xxData* data, FuriString* str) {
+    nfc_render_ntag4xx_version(&data->version, str);
+}
+
+void nfc_render_ntag4xx_version(const Ntag4xxVersion* data, FuriString* str) {
+    furi_string_cat_printf(
+        str,
+        "%02x:%02x:%02x:%02x:%02x:%02x:%02x\n",
+        data->uid[0],
+        data->uid[1],
+        data->uid[2],
+        data->uid[3],
+        data->uid[4],
+        data->uid[5],
+        data->uid[6]);
+    furi_string_cat_printf(
+        str,
+        "hw %02x type %02x sub %02x\n"
+        " maj %02x min %02x\n"
+        " size %02x proto %02x\n",
+        data->hw_vendor,
+        data->hw_type,
+        data->hw_subtype,
+        data->hw_major,
+        data->hw_minor,
+        data->hw_storage,
+        data->hw_proto);
+    furi_string_cat_printf(
+        str,
+        "sw %02x type %02x sub %02x\n"
+        " maj %02x min %02x\n"
+        " size %02x proto %02x\n",
+        data->sw_vendor,
+        data->sw_type,
+        data->sw_subtype,
+        data->sw_major,
+        data->sw_minor,
+        data->sw_storage,
+        data->sw_proto);
+    furi_string_cat_printf(
+        str,
+        "batch %02x:%02x:%02x:%02x:%01x\n"
+        "week %d year %d\n"
+        "fab key %02x id %02x\n",
+        data->batch[0],
+        data->batch[1],
+        data->batch[2],
+        data->batch[3],
+        data->batch_extra,
+        data->prod_week,
+        data->prod_year,
+        (data->fab_key_4b << 1) | (data->fab_key_1b),
+        data->optional.fab_key_id);
+}

applications/main/nfc/helpers/protocol_support/ntag4xx/ntag4xx_render.h

@@ -0,0 +1,14 @@
+#pragma once
+
+#include <nfc/protocols/ntag4xx/ntag4xx.h>
+
+#include "../nfc_protocol_support_render_common.h"
+
+void nfc_render_ntag4xx_info(
+    const Ntag4xxData* data,
+    NfcProtocolFormatType format_type,
+    FuriString* str);
+
+void nfc_render_ntag4xx_data(const Ntag4xxData* data, FuriString* str);
+
+void nfc_render_ntag4xx_version(const Ntag4xxVersion* data, FuriString* str);

lib/nfc/SConscript

@@ -27,6 +27,7 @@ env.Append(
         File("protocols/mf_desfire/mf_desfire.h"),
         File("protocols/slix/slix.h"),
         File("protocols/st25tb/st25tb.h"),
+        File("protocols/ntag4xx/ntag4xx.h"),
         # Pollers
         File("protocols/iso14443_3a/iso14443_3a_poller.h"),
         File("protocols/iso14443_3b/iso14443_3b_poller.h"),
@@ -40,6 +41,7 @@ env.Append(
         File("protocols/mf_desfire/mf_desfire_poller.h"),
         File("protocols/slix/slix_poller.h"),
         File("protocols/st25tb/st25tb_poller.h"),
+        File("protocols/ntag4xx/ntag4xx_poller.h"),
         # Listeners
         File("protocols/iso14443_3a/iso14443_3a_listener.h"),
         File("protocols/iso14443_4a/iso14443_4a_listener.h"),

lib/nfc/protocols/nfc_device_defs.c

@@ -24,6 +24,7 @@
 #include <nfc/protocols/mf_desfire/mf_desfire.h>
 #include <nfc/protocols/slix/slix_device_defs.h>
 #include <nfc/protocols/st25tb/st25tb.h>
+#include <nfc/protocols/ntag4xx/ntag4xx.h>
 
 /**
  * @brief List of registered NFC device implementations.
@@ -44,5 +45,6 @@ const NfcDeviceBase* nfc_devices[NfcProtocolNum] = {
     [NfcProtocolMfDesfire] = &nfc_device_mf_desfire,
     [NfcProtocolSlix] = &nfc_device_slix,
     [NfcProtocolSt25tb] = &nfc_device_st25tb,
+    [NfcProtocolNtag4xx] = &nfc_device_ntag4xx,
     /* Add new protocols here */
 };

lib/nfc/protocols/nfc_listener_defs.c

@@ -21,4 +21,5 @@ const NfcListenerBase* nfc_listeners_api[NfcProtocolNum] = {
     [NfcProtocolMfDesfire] = NULL,
     [NfcProtocolSlix] = &nfc_listener_slix,
     [NfcProtocolSt25tb] = NULL,
+    [NfcProtocolNtag4xx] = NULL,
 };

lib/nfc/protocols/nfc_poller_defs.c

@@ -12,6 +12,7 @@
 #include <nfc/protocols/mf_desfire/mf_desfire_poller_defs.h>
 #include <nfc/protocols/slix/slix_poller_defs.h>
 #include <nfc/protocols/st25tb/st25tb_poller_defs.h>
+#include <nfc/protocols/ntag4xx/ntag4xx_poller_defs.h>
 
 const NfcPollerBase* nfc_pollers_api[NfcProtocolNum] = {
     [NfcProtocolIso14443_3a] = &nfc_poller_iso14443_3a,
@@ -26,5 +27,6 @@ const NfcPollerBase* nfc_pollers_api[NfcProtocolNum] = {
     [NfcProtocolMfDesfire] = &mf_desfire_poller,
     [NfcProtocolSlix] = &nfc_poller_slix,
     [NfcProtocolSt25tb] = &nfc_poller_st25tb,
+    [NfcProtocolNtag4xx] = &ntag4xx_poller,
     /* Add new pollers here */
 };

lib/nfc/protocols/nfc_protocol.c

@@ -22,9 +22,9 @@
  *            |               |             |
  *       ISO14443-4A   Mf Ultralight   Mf Classic
  *            |
- *      +-----+----+
- *      |          |
- *  Mf Desfire   Mf Plus
+ *      +-----+----+----------+
+ *      |          |          |
+ *  Mf Desfire   Mf Plus   NTAG4xx
  * ```
  *
  * When implementing a new protocol, its place in the tree must be determined first.
@@ -64,6 +64,7 @@ static const NfcProtocol nfc_protocol_iso14443_3b_children_protocol[] = {
 static const NfcProtocol nfc_protocol_iso14443_4a_children_protocol[] = {
     NfcProtocolMfPlus,
     NfcProtocolMfDesfire,
+    NfcProtocolNtag4xx,
 };
 
 /** List of ISO115693-3 child protocols. */
@@ -155,6 +156,12 @@ static const NfcProtocolTreeNode nfc_protocol_nodes[NfcProtocolNum] = {
             .children_num = 0,
             .children_protocol = NULL,
         },
+    [NfcProtocolNtag4xx] =
+        {
+            .parent_protocol = NfcProtocolIso14443_4a,
+            .children_num = 0,
+            .children_protocol = NULL,
+        },
     /* Add new protocols here */
 };
 

lib/nfc/protocols/nfc_protocol.h

@@ -188,6 +188,7 @@ typedef enum {
     NfcProtocolMfDesfire,
     NfcProtocolSlix,
     NfcProtocolSt25tb,
+    NfcProtocolNtag4xx,
     /* Add new protocols here */
 
     NfcProtocolNum, /**< Special value representing the number of available protocols. */

lib/nfc/protocols/ntag4xx/ntag4xx.c

@@ -0,0 +1,192 @@
+#include "ntag4xx_i.h"
+
+#include <furi.h>
+
+#define NTAG4XX_PROTOCOL_NAME "NTAG4xx"
+
+#define NTAG4XX_HW_MAJOR_TYPE_413_DNA (0x10)
+#define NTAG4XX_HW_MAJOR_TYPE_424_DNA (0x30)
+
+#define NTAG4XX_HW_SUBTYPE_TAGTAMPER_FLAG (0x08)
+
+static const char* ntag4xx_type_strings[] = {
+    [Ntag4xxType413DNA] = "NTAG413 DNA",
+    [Ntag4xxType424DNA] = "NTAG424 DNA",
+    [Ntag4xxType424DNATT] = "NTAG424 DNA TagTamper",
+    [Ntag4xxType426QDNA] = "NTAG426Q DNA",
+    [Ntag4xxType426QDNATT] = "NTAG426Q DNA TagTamper",
+    [Ntag4xxTypeUnknown] = "UNK",
+};
+
+const NfcDeviceBase nfc_device_ntag4xx = {
+    .protocol_name = NTAG4XX_PROTOCOL_NAME,
+    .alloc = (NfcDeviceAlloc)ntag4xx_alloc,
+    .free = (NfcDeviceFree)ntag4xx_free,
+    .reset = (NfcDeviceReset)ntag4xx_reset,
+    .copy = (NfcDeviceCopy)ntag4xx_copy,
+    .verify = (NfcDeviceVerify)ntag4xx_verify,
+    .load = (NfcDeviceLoad)ntag4xx_load,
+    .save = (NfcDeviceSave)ntag4xx_save,
+    .is_equal = (NfcDeviceEqual)ntag4xx_is_equal,
+    .get_name = (NfcDeviceGetName)ntag4xx_get_device_name,
+    .get_uid = (NfcDeviceGetUid)ntag4xx_get_uid,
+    .set_uid = (NfcDeviceSetUid)ntag4xx_set_uid,
+    .get_base_data = (NfcDeviceGetBaseData)ntag4xx_get_base_data,
+};
+
+Ntag4xxData* ntag4xx_alloc(void) {
+    Ntag4xxData* data = malloc(sizeof(Ntag4xxData));
+    data->iso14443_4a_data = iso14443_4a_alloc();
+    data->device_name = furi_string_alloc();
+    return data;
+}
+
+void ntag4xx_free(Ntag4xxData* data) {
+    furi_check(data);
+
+    ntag4xx_reset(data);
+    iso14443_4a_free(data->iso14443_4a_data);
+    furi_string_free(data->device_name);
+    free(data);
+}
+
+void ntag4xx_reset(Ntag4xxData* data) {
+    furi_check(data);
+
+    iso14443_4a_reset(data->iso14443_4a_data);
+
+    memset(&data->version, 0, sizeof(Ntag4xxVersion));
+}
+
+void ntag4xx_copy(Ntag4xxData* data, const Ntag4xxData* other) {
+    furi_check(data);
+    furi_check(other);
+
+    ntag4xx_reset(data);
+
+    iso14443_4a_copy(data->iso14443_4a_data, other->iso14443_4a_data);
+
+    data->version = other->version;
+}
+
+bool ntag4xx_verify(Ntag4xxData* data, const FuriString* device_type) {
+    UNUSED(data);
+    UNUSED(device_type);
+
+    return false;
+}
+
+bool ntag4xx_load(Ntag4xxData* data, FlipperFormat* ff, uint32_t version) {
+    furi_check(data);
+    furi_check(ff);
+
+    FuriString* prefix = furi_string_alloc();
+
+    bool success = false;
+
+    do {
+        if(!iso14443_4a_load(data->iso14443_4a_data, ff, version)) break;
+
+        if(!ntag4xx_version_load(&data->version, ff)) break;
+
+        success = true;
+    } while(false);
+
+    furi_string_free(prefix);
+    return success;
+}
+
+bool ntag4xx_save(const Ntag4xxData* data, FlipperFormat* ff) {
+    furi_check(data);
+    furi_check(ff);
+
+    FuriString* prefix = furi_string_alloc();
+
+    bool success = false;
+
+    do {
+        if(!iso14443_4a_save(data->iso14443_4a_data, ff)) break;
+
+        if(!flipper_format_write_comment_cstr(ff, NTAG4XX_PROTOCOL_NAME " specific data")) break;
+        if(!ntag4xx_version_save(&data->version, ff)) break;
+
+        success = true;
+    } while(false);
+
+    furi_string_free(prefix);
+    return success;
+}
+
+bool ntag4xx_is_equal(const Ntag4xxData* data, const Ntag4xxData* other) {
+    furi_check(data);
+    furi_check(other);
+
+    return iso14443_4a_is_equal(data->iso14443_4a_data, other->iso14443_4a_data) &&
+           memcmp(&data->version, &other->version, sizeof(Ntag4xxVersion)) == 0;
+}
+
+Ntag4xxType ntag4xx_get_type_from_version(const Ntag4xxVersion* const version) {
+    Ntag4xxType type = Ntag4xxTypeUnknown;
+
+    switch(version->hw_major) {
+    case NTAG4XX_HW_MAJOR_TYPE_413_DNA:
+        type = Ntag4xxType413DNA;
+        break;
+    case NTAG4XX_HW_MAJOR_TYPE_424_DNA:
+        if(version->hw_subtype & NTAG4XX_HW_SUBTYPE_TAGTAMPER_FLAG) {
+            type = Ntag4xxType424DNATT;
+        } else {
+            type = Ntag4xxType424DNA;
+        }
+        break;
+    // TODO: there is no info online or in other implementations (NXP TagInfo, NFC Tools, Proxmark3)
+    // about what the HWMajorVersion is supposed to be for NTAG426Q DNA, and they don't seem to be for sale
+    // case NTAG4XX_HW_MAJOR_TYPE_426Q_DNA:
+    //     if(version->hw_subtype & NTAG4XX_HW_SUBTYPE_TAGTAMPER_FLAG) {
+    //         type = Ntag4xxType426QDNATT;
+    //     } else {
+    //         type = Ntag4xxType426QDNA;
+    //     }
+    //     break;
+    default:
+        break;
+    }
+
+    return type;
+}
+
+const char* ntag4xx_get_device_name(const Ntag4xxData* data, NfcDeviceNameType name_type) {
+    furi_check(data);
+
+    const Ntag4xxType type = ntag4xx_get_type_from_version(&data->version);
+
+    if(type == Ntag4xxTypeUnknown) {
+        furi_string_printf(data->device_name, "Unknown %s", NTAG4XX_PROTOCOL_NAME);
+    } else {
+        furi_string_printf(data->device_name, "%s", ntag4xx_type_strings[type]);
+        if(name_type == NfcDeviceNameTypeShort) {
+            furi_string_replace(data->device_name, "TagTamper", "TT");
+        }
+    }
+
+    return furi_string_get_cstr(data->device_name);
+}
+
+const uint8_t* ntag4xx_get_uid(const Ntag4xxData* data, size_t* uid_len) {
+    furi_check(data);
+    furi_check(uid_len);
+
+    return iso14443_4a_get_uid(data->iso14443_4a_data, uid_len);
+}
+
+bool ntag4xx_set_uid(Ntag4xxData* data, const uint8_t* uid, size_t uid_len) {
+    furi_check(data);
+
+    return iso14443_4a_set_uid(data->iso14443_4a_data, uid, uid_len);
+}
+
+Iso14443_4aData* ntag4xx_get_base_data(const Ntag4xxData* data) {
+    furi_check(data);
+
+    return data->iso14443_4a_data;
+}

lib/nfc/protocols/ntag4xx/ntag4xx.h

@@ -0,0 +1,114 @@
+#pragma once
+
+#include <lib/nfc/protocols/iso14443_4a/iso14443_4a.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define NTAG4XX_UID_SIZE            (7)
+#define NTAG4XX_BATCH_SIZE          (4)
+#define NTAG4XX_BATCH_EXTRA_BITS    4
+#define NTAG4XX_FAB_KEY_SIZE_BITS_4 4
+#define NTAG4XX_FAB_KEY_SIZE_BITS_1 1
+#define NTAG4XX_PROD_WEEK_SIZE_BITS 7
+
+#define NTAG4XX_CMD_GET_VERSION (0x60)
+
+typedef enum {
+    Ntag4xxErrorNone,
+    Ntag4xxErrorNotPresent,
+    Ntag4xxErrorProtocol,
+    Ntag4xxErrorTimeout,
+} Ntag4xxError;
+
+typedef enum {
+    Ntag4xxType413DNA,
+    Ntag4xxType424DNA,
+    Ntag4xxType424DNATT,
+    Ntag4xxType426QDNA,
+    Ntag4xxType426QDNATT,
+
+    Ntag4xxTypeUnknown,
+    Ntag4xxTypeNum,
+} Ntag4xxType;
+
+#pragma pack(push, 1)
+typedef struct {
+    uint8_t hw_vendor;
+    uint8_t hw_type;
+    uint8_t hw_subtype;
+    uint8_t hw_major;
+    uint8_t hw_minor;
+    uint8_t hw_storage;
+    uint8_t hw_proto;
+
+    uint8_t sw_vendor;
+    uint8_t sw_type;
+    uint8_t sw_subtype;
+    uint8_t sw_major;
+    uint8_t sw_minor;
+    uint8_t sw_storage;
+    uint8_t sw_proto;
+
+    uint8_t uid[NTAG4XX_UID_SIZE];
+    // [36b batch][5b fab key][7b prod week]
+    // 5b fab key is split 4b in last byte of batch and 1b in prod week
+    // Due to endianness, they appear swapped in the struct definition
+    uint8_t batch[NTAG4XX_BATCH_SIZE];
+    struct {
+        uint8_t fab_key_4b : NTAG4XX_FAB_KEY_SIZE_BITS_4;
+        uint8_t batch_extra : NTAG4XX_BATCH_EXTRA_BITS;
+    };
+    struct {
+        uint8_t prod_week : NTAG4XX_PROD_WEEK_SIZE_BITS;
+        uint8_t fab_key_1b : NTAG4XX_FAB_KEY_SIZE_BITS_1;
+    };
+    uint8_t prod_year;
+    struct {
+        uint8_t fab_key_id;
+    } optional;
+} Ntag4xxVersion;
+#pragma pack(pop)
+
+typedef struct {
+    Iso14443_4aData* iso14443_4a_data;
+    Ntag4xxVersion version;
+    FuriString* device_name;
+} Ntag4xxData;
+
+extern const NfcDeviceBase nfc_device_ntag4xx;
+
+// Virtual methods
+
+Ntag4xxData* ntag4xx_alloc(void);
+
+void ntag4xx_free(Ntag4xxData* data);
+
+void ntag4xx_reset(Ntag4xxData* data);
+
+void ntag4xx_copy(Ntag4xxData* data, const Ntag4xxData* other);
+
+bool ntag4xx_verify(Ntag4xxData* data, const FuriString* device_type);
+
+bool ntag4xx_load(Ntag4xxData* data, FlipperFormat* ff, uint32_t version);
+
+bool ntag4xx_save(const Ntag4xxData* data, FlipperFormat* ff);
+
+bool ntag4xx_is_equal(const Ntag4xxData* data, const Ntag4xxData* other);
+
+const char* ntag4xx_get_device_name(const Ntag4xxData* data, NfcDeviceNameType name_type);
+
+const uint8_t* ntag4xx_get_uid(const Ntag4xxData* data, size_t* uid_len);
+
+bool ntag4xx_set_uid(Ntag4xxData* data, const uint8_t* uid, size_t uid_len);
+
+Iso14443_4aData* ntag4xx_get_base_data(const Ntag4xxData* data);
+
+// Helpers
+
+Ntag4xxType ntag4xx_get_type_from_version(const Ntag4xxVersion* const version);
+
+#ifdef __cplusplus
+}
+#endif

lib/nfc/protocols/ntag4xx/ntag4xx_i.c

@@ -0,0 +1,54 @@
+#include "ntag4xx_i.h"
+
+#define TAG "Ntag4xx"
+
+#define NTAG4XX_FFF_VERSION_KEY \
+    NTAG4XX_FFF_PICC_PREFIX " " \
+                            "Version"
+
+Ntag4xxError ntag4xx_process_error(Iso14443_4aError error) {
+    switch(error) {
+    case Iso14443_4aErrorNone:
+        return Ntag4xxErrorNone;
+    case Iso14443_4aErrorNotPresent:
+        return Ntag4xxErrorNotPresent;
+    case Iso14443_4aErrorTimeout:
+        return Ntag4xxErrorTimeout;
+    default:
+        return Ntag4xxErrorProtocol;
+    }
+}
+
+Ntag4xxError ntag4xx_process_status_code(uint8_t status_code) {
+    switch(status_code) {
+    case NXP_NATIVE_COMMAND_STATUS_OPERATION_OK:
+        return Ntag4xxErrorNone;
+    default:
+        return Ntag4xxErrorProtocol;
+    }
+}
+
+bool ntag4xx_version_parse(Ntag4xxVersion* data, const BitBuffer* buf) {
+    const size_t buf_size = bit_buffer_get_size_bytes(buf);
+    const bool can_parse = buf_size == sizeof(Ntag4xxVersion) ||
+                           buf_size == sizeof(Ntag4xxVersion) - sizeof(data->optional);
+
+    if(can_parse) {
+        bit_buffer_write_bytes(buf, data, sizeof(Ntag4xxVersion));
+        if(buf_size < sizeof(Ntag4xxVersion)) {
+            memset(&data->optional, 0, sizeof(data->optional));
+        }
+    }
+
+    return can_parse && (data->hw_type & 0x0F) == 0x04;
+}
+
+bool ntag4xx_version_load(Ntag4xxVersion* data, FlipperFormat* ff) {
+    return flipper_format_read_hex(
+        ff, NTAG4XX_FFF_VERSION_KEY, (uint8_t*)data, sizeof(Ntag4xxVersion));
+}
+
+bool ntag4xx_version_save(const Ntag4xxVersion* data, FlipperFormat* ff) {
+    return flipper_format_write_hex(
+        ff, NTAG4XX_FFF_VERSION_KEY, (const uint8_t*)data, sizeof(Ntag4xxVersion));
+}

lib/nfc/protocols/ntag4xx/ntag4xx_i.h

@@ -0,0 +1,25 @@
+#pragma once
+
+#include "ntag4xx.h"
+
+#include <nfc/helpers/nxp_native_command.h>
+
+#define NTAG4XX_FFF_PICC_PREFIX "PICC"
+
+// Internal helpers
+
+Ntag4xxError ntag4xx_process_error(Iso14443_4aError error);
+
+Ntag4xxError ntag4xx_process_status_code(uint8_t status_code);
+
+// Parse internal Ntag4xx structures
+
+bool ntag4xx_version_parse(Ntag4xxVersion* data, const BitBuffer* buf);
+
+// Load internal Ntag4xx structures
+
+bool ntag4xx_version_load(Ntag4xxVersion* data, FlipperFormat* ff);
+
+// Save internal Ntag4xx structures
+
+bool ntag4xx_version_save(const Ntag4xxVersion* data, FlipperFormat* ff);

lib/nfc/protocols/ntag4xx/ntag4xx_poller.c

@@ -0,0 +1,165 @@
+#include "ntag4xx_poller_i.h"
+
+#include <nfc/protocols/nfc_poller_base.h>
+
+#include <furi.h>
+
+#define TAG "Ntag4xxPoller"
+
+#define NTAG4XX_BUF_SIZE        (64U)
+#define NTAG4XX_RESULT_BUF_SIZE (512U)
+
+typedef NfcCommand (*Ntag4xxPollerReadHandler)(Ntag4xxPoller* instance);
+
+static const Ntag4xxData* ntag4xx_poller_get_data(Ntag4xxPoller* instance) {
+    furi_assert(instance);
+
+    return instance->data;
+}
+
+static Ntag4xxPoller* ntag4xx_poller_alloc(Iso14443_4aPoller* iso14443_4a_poller) {
+    Ntag4xxPoller* instance = malloc(sizeof(Ntag4xxPoller));
+    instance->iso14443_4a_poller = iso14443_4a_poller;
+    instance->data = ntag4xx_alloc();
+    instance->tx_buffer = bit_buffer_alloc(NTAG4XX_BUF_SIZE);
+    instance->rx_buffer = bit_buffer_alloc(NTAG4XX_BUF_SIZE);
+    instance->input_buffer = bit_buffer_alloc(NTAG4XX_BUF_SIZE);
+    instance->result_buffer = bit_buffer_alloc(NTAG4XX_RESULT_BUF_SIZE);
+
+    instance->ntag4xx_event.data = &instance->ntag4xx_event_data;
+
+    instance->general_event.protocol = NfcProtocolNtag4xx;
+    instance->general_event.event_data = &instance->ntag4xx_event;
+    instance->general_event.instance = instance;
+
+    return instance;
+}
+
+static void ntag4xx_poller_free(Ntag4xxPoller* instance) {
+    furi_assert(instance);
+
+    ntag4xx_free(instance->data);
+    bit_buffer_free(instance->tx_buffer);
+    bit_buffer_free(instance->rx_buffer);
+    bit_buffer_free(instance->input_buffer);
+    bit_buffer_free(instance->result_buffer);
+    free(instance);
+}
+
+static NfcCommand ntag4xx_poller_handler_idle(Ntag4xxPoller* instance) {
+    bit_buffer_reset(instance->input_buffer);
+    bit_buffer_reset(instance->result_buffer);
+    bit_buffer_reset(instance->tx_buffer);
+    bit_buffer_reset(instance->rx_buffer);
+
+    iso14443_4a_copy(
+        instance->data->iso14443_4a_data,
+        iso14443_4a_poller_get_data(instance->iso14443_4a_poller));
+
+    instance->state = Ntag4xxPollerStateReadVersion;
+    return NfcCommandContinue;
+}
+
+static NfcCommand ntag4xx_poller_handler_read_version(Ntag4xxPoller* instance) {
+    instance->error = ntag4xx_poller_read_version(instance, &instance->data->version);
+    if(instance->error == Ntag4xxErrorNone) {
+        FURI_LOG_D(TAG, "Read version success");
+        instance->state = Ntag4xxPollerStateReadSuccess;
+    } else {
+        FURI_LOG_E(TAG, "Failed to read version");
+        iso14443_4a_poller_halt(instance->iso14443_4a_poller);
+        instance->state = Ntag4xxPollerStateReadFailed;
+    }
+
+    return NfcCommandContinue;
+}
+
+static NfcCommand ntag4xx_poller_handler_read_failed(Ntag4xxPoller* instance) {
+    FURI_LOG_D(TAG, "Read Failed");
+    iso14443_4a_poller_halt(instance->iso14443_4a_poller);
+    instance->ntag4xx_event.type = Ntag4xxPollerEventTypeReadFailed;
+    instance->ntag4xx_event.data->error = instance->error;
+    NfcCommand command = instance->callback(instance->general_event, instance->context);
+    instance->state = Ntag4xxPollerStateIdle;
+    return command;
+}
+
+static NfcCommand ntag4xx_poller_handler_read_success(Ntag4xxPoller* instance) {
+    FURI_LOG_D(TAG, "Read success");
+    iso14443_4a_poller_halt(instance->iso14443_4a_poller);
+    instance->ntag4xx_event.type = Ntag4xxPollerEventTypeReadSuccess;
+    NfcCommand command = instance->callback(instance->general_event, instance->context);
+    return command;
+}
+
+static const Ntag4xxPollerReadHandler ntag4xx_poller_read_handler[Ntag4xxPollerStateNum] = {
+    [Ntag4xxPollerStateIdle] = ntag4xx_poller_handler_idle,
+    [Ntag4xxPollerStateReadVersion] = ntag4xx_poller_handler_read_version,
+    [Ntag4xxPollerStateReadFailed] = ntag4xx_poller_handler_read_failed,
+    [Ntag4xxPollerStateReadSuccess] = ntag4xx_poller_handler_read_success,
+};
+
+static void ntag4xx_poller_set_callback(
+    Ntag4xxPoller* instance,
+    NfcGenericCallback callback,
+    void* context) {
+    furi_assert(instance);
+    furi_assert(callback);
+
+    instance->callback = callback;
+    instance->context = context;
+}
+
+static NfcCommand ntag4xx_poller_run(NfcGenericEvent event, void* context) {
+    furi_assert(event.protocol == NfcProtocolIso14443_4a);
+
+    Ntag4xxPoller* instance = context;
+    furi_assert(instance);
+    furi_assert(instance->callback);
+
+    const Iso14443_4aPollerEvent* iso14443_4a_event = event.event_data;
+    furi_assert(iso14443_4a_event);
+
+    NfcCommand command = NfcCommandContinue;
+
+    if(iso14443_4a_event->type == Iso14443_4aPollerEventTypeReady) {
+        command = ntag4xx_poller_read_handler[instance->state](instance);
+    } else if(iso14443_4a_event->type == Iso14443_4aPollerEventTypeError) {
+        instance->ntag4xx_event.type = Ntag4xxPollerEventTypeReadFailed;
+        command = instance->callback(instance->general_event, instance->context);
+    }
+
+    return command;
+}
+
+static bool ntag4xx_poller_detect(NfcGenericEvent event, void* context) {
+    furi_assert(event.protocol == NfcProtocolIso14443_4a);
+
+    Ntag4xxPoller* instance = context;
+    furi_assert(instance);
+
+    const Iso14443_4aPollerEvent* iso14443_4a_event = event.event_data;
+    furi_assert(iso14443_4a_event);
+
+    bool protocol_detected = false;
+
+    if(iso14443_4a_event->type == Iso14443_4aPollerEventTypeReady) {
+        do {
+            Ntag4xxError error = ntag4xx_poller_read_version(instance, &instance->data->version);
+            if(error != Ntag4xxErrorNone) break;
+
+            protocol_detected = true;
+        } while(false);
+    }
+
+    return protocol_detected;
+}
+
+const NfcPollerBase ntag4xx_poller = {
+    .alloc = (NfcPollerAlloc)ntag4xx_poller_alloc,
+    .free = (NfcPollerFree)ntag4xx_poller_free,
+    .set_callback = (NfcPollerSetCallback)ntag4xx_poller_set_callback,
+    .run = (NfcPollerRun)ntag4xx_poller_run,
+    .detect = (NfcPollerDetect)ntag4xx_poller_detect,
+    .get_data = (NfcPollerGetData)ntag4xx_poller_get_data,
+};

lib/nfc/protocols/ntag4xx/ntag4xx_poller.h

@@ -0,0 +1,43 @@
+#pragma once
+
+#include "ntag4xx.h"
+
+#include <lib/nfc/protocols/iso14443_4a/iso14443_4a_poller.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @brief Ntag4xxPoller opaque type definition.
+ */
+typedef struct Ntag4xxPoller Ntag4xxPoller;
+
+/**
+ * @brief Enumeration of possible Ntag4xx poller event types.
+ */
+typedef enum {
+    Ntag4xxPollerEventTypeReadSuccess, /**< Card was read successfully. */
+    Ntag4xxPollerEventTypeReadFailed, /**< Poller failed to read card. */
+} Ntag4xxPollerEventType;
+
+/**
+ * @brief Ntag4xx poller event data.
+ */
+typedef union {
+    Ntag4xxError error; /**< Error code indicating card reading fail reason. */
+} Ntag4xxPollerEventData;
+
+/**
+ * @brief Ntag4xx poller event structure.
+ *
+ * Upon emission of an event, an instance of this struct will be passed to the callback.
+ */
+typedef struct {
+    Ntag4xxPollerEventType type; /**< Type of emmitted event. */
+    Ntag4xxPollerEventData* data; /**< Pointer to event specific data. */
+} Ntag4xxPollerEvent;
+
+#ifdef __cplusplus
+}
+#endif

lib/nfc/protocols/ntag4xx/ntag4xx_poller_defs.h

@@ -0,0 +1,5 @@
+#pragma once
+
+#include <nfc/protocols/nfc_poller_base.h>
+
+extern const NfcPollerBase ntag4xx_poller;

lib/nfc/protocols/ntag4xx/ntag4xx_poller_i.c

@@ -0,0 +1,52 @@
+#include "ntag4xx_poller_i.h"
+
+#include <furi.h>
+
+#include "ntag4xx_i.h"
+
+#define TAG "Ntag4xxPoller"
+
+Ntag4xxError ntag4xx_poller_send_chunks(
+    Ntag4xxPoller* instance,
+    const BitBuffer* tx_buffer,
+    BitBuffer* rx_buffer) {
+    furi_check(instance);
+
+    NxpNativeCommandStatus status_code = NXP_NATIVE_COMMAND_STATUS_OPERATION_OK;
+    Iso14443_4aError iso14443_4a_error = nxp_native_command_iso14443_4a_poller(
+        instance->iso14443_4a_poller,
+        &status_code,
+        tx_buffer,
+        rx_buffer,
+        NxpNativeCommandModeIsoWrapped,
+        instance->tx_buffer,
+        instance->rx_buffer);
+
+    if(iso14443_4a_error != Iso14443_4aErrorNone) {
+        return ntag4xx_process_error(iso14443_4a_error);
+    }
+
+    return ntag4xx_process_status_code(status_code);
+}
+
+Ntag4xxError ntag4xx_poller_read_version(Ntag4xxPoller* instance, Ntag4xxVersion* data) {
+    furi_check(instance);
+
+    bit_buffer_reset(instance->input_buffer);
+    bit_buffer_append_byte(instance->input_buffer, NTAG4XX_CMD_GET_VERSION);
+
+    Ntag4xxError error;
+
+    do {
+        error =
+            ntag4xx_poller_send_chunks(instance, instance->input_buffer, instance->result_buffer);
+
+        if(error != Ntag4xxErrorNone) break;
+
+        if(!ntag4xx_version_parse(data, instance->result_buffer)) {
+            error = Ntag4xxErrorProtocol;
+        }
+    } while(false);
+
+    return error;
+}

lib/nfc/protocols/ntag4xx/ntag4xx_poller_i.h

@@ -0,0 +1,40 @@
+#pragma once
+
+#include "ntag4xx_poller.h"
+
+#include <lib/nfc/protocols/iso14443_4a/iso14443_4a_poller_i.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef enum {
+    Ntag4xxPollerStateIdle,
+    Ntag4xxPollerStateReadVersion,
+    Ntag4xxPollerStateReadFailed,
+    Ntag4xxPollerStateReadSuccess,
+
+    Ntag4xxPollerStateNum,
+} Ntag4xxPollerState;
+
+struct Ntag4xxPoller {
+    Iso14443_4aPoller* iso14443_4a_poller;
+    Ntag4xxPollerState state;
+    Ntag4xxError error;
+    Ntag4xxData* data;
+    BitBuffer* tx_buffer;
+    BitBuffer* rx_buffer;
+    BitBuffer* input_buffer;
+    BitBuffer* result_buffer;
+    Ntag4xxPollerEventData ntag4xx_event_data;
+    Ntag4xxPollerEvent ntag4xx_event;
+    NfcGenericEvent general_event;
+    NfcGenericCallback callback;
+    void* context;
+};
+
+Ntag4xxError ntag4xx_poller_read_version(Ntag4xxPoller* instance, Ntag4xxVersion* data);
+
+#ifdef __cplusplus
+}
+#endif

targets/f18/api_symbols.csv

@@ -1,5 +1,5 @@
 entry,status,name,type,params
-Version,+,82.2,,
+Version,+,82.3,,
 Header,+,applications/services/bt/bt_service/bt.h,,
 Header,+,applications/services/bt/bt_service/bt_keys_storage.h,,
 Header,+,applications/services/cli/cli.h,,

targets/f7/api_symbols.csv

@@ -1,5 +1,5 @@
 entry,status,name,type,params
-Version,+,82.2,,
+Version,+,82.3,,
 Header,+,applications/drivers/subghz/cc1101_ext/cc1101_ext_interconnect.h,,
 Header,+,applications/services/bt/bt_service/bt.h,,
 Header,+,applications/services/bt/bt_service/bt_keys_storage.h,,
@@ -167,6 +167,8 @@ Header,+,lib/nfc/protocols/mf_ultralight/mf_ultralight.h,,
 Header,+,lib/nfc/protocols/mf_ultralight/mf_ultralight_listener.h,,
 Header,+,lib/nfc/protocols/mf_ultralight/mf_ultralight_poller.h,,
 Header,+,lib/nfc/protocols/mf_ultralight/mf_ultralight_poller_sync.h,,
+Header,+,lib/nfc/protocols/ntag4xx/ntag4xx.h,,
+Header,+,lib/nfc/protocols/ntag4xx/ntag4xx_poller.h,,
 Header,+,lib/nfc/protocols/slix/slix.h,,
 Header,+,lib/nfc/protocols/slix/slix_listener.h,,
 Header,+,lib/nfc/protocols/slix/slix_poller.h,,
@@ -2895,6 +2897,19 @@ Function,+,notification_internal_message_block,void,"NotificationApp*, const Not
 Function,+,notification_message,void,"NotificationApp*, const NotificationSequence*"
 Function,+,notification_message_block,void,"NotificationApp*, const NotificationSequence*"
 Function,-,nrand48,long,unsigned short[3]
+Function,+,ntag4xx_alloc,Ntag4xxData*,
+Function,+,ntag4xx_copy,void,"Ntag4xxData*, const Ntag4xxData*"
+Function,+,ntag4xx_free,void,Ntag4xxData*
+Function,+,ntag4xx_get_base_data,Iso14443_4aData*,const Ntag4xxData*
+Function,+,ntag4xx_get_device_name,const char*,"const Ntag4xxData*, NfcDeviceNameType"
+Function,+,ntag4xx_get_type_from_version,Ntag4xxType,const Ntag4xxVersion*
+Function,+,ntag4xx_get_uid,const uint8_t*,"const Ntag4xxData*, size_t*"
+Function,+,ntag4xx_is_equal,_Bool,"const Ntag4xxData*, const Ntag4xxData*"
+Function,+,ntag4xx_load,_Bool,"Ntag4xxData*, FlipperFormat*, uint32_t"
+Function,+,ntag4xx_reset,void,Ntag4xxData*
+Function,+,ntag4xx_save,_Bool,"const Ntag4xxData*, FlipperFormat*"
+Function,+,ntag4xx_set_uid,_Bool,"Ntag4xxData*, const uint8_t*, size_t"
+Function,+,ntag4xx_verify,_Bool,"Ntag4xxData*, const FuriString*"
 Function,+,number_input_alloc,NumberInput*,
 Function,+,number_input_free,void,NumberInput*
 Function,+,number_input_get_view,View*,NumberInput*
@@ -4022,6 +4037,7 @@ Variable,-,nfc_device_mf_classic,const NfcDeviceBase,
 Variable,-,nfc_device_mf_desfire,const NfcDeviceBase,
 Variable,-,nfc_device_mf_plus,const NfcDeviceBase,
 Variable,-,nfc_device_mf_ultralight,const NfcDeviceBase,
+Variable,-,nfc_device_ntag4xx,const NfcDeviceBase,
 Variable,-,nfc_device_st25tb,const NfcDeviceBase,
 Variable,+,sequence_audiovisual_alert,const NotificationSequence,
 Variable,+,sequence_blink_blue_10,const NotificationSequence,